WO2007006218A1

WO2007006218A1 - A dryer and a method and an equipment for drying and incinerating wet sludge using circulating fluidized bed with the dryer

Info

Publication number: WO2007006218A1
Application number: PCT/CN2006/001610
Authority: WO
Inventors: Qinggang Lu; Yongjie Na; Xiaoyin Yun; Ming Gao; Yunkai Sun; Jun He; Shaolin Bao; Weihong Jiao; Renxiong Ma; Dongyu Wang; Yumei Yong
Original assignee: Institute of Engineering Thermophysics of CAS
Current assignee: Institute of Engineering Thermophysics of CAS
Priority date: 2005-07-08
Filing date: 2006-07-07
Publication date: 2007-01-18
Anticipated expiration: 2008-01-08
Also published as: JP2009500155A; JP4839371B2

Abstract

The present invention provides a dryer and a method and equipment for drying and incinerating wet sludge using circulating fluidized bed with the dryer. Hot ash and wet sludge are fed into the dryer together. The wet sludge in the fluidized state exchanges heat with the hot ash directly and is heated sufficiently by the hot ash in the dryer. Thereby the drying and incinerating of the wet sludge are finished in one single equipment. After dried in the dryer the wet sludge is returned to the incinerator chamber with the circulation ash. A great deal of water contained in the wet sludge does not go into the rear flue with the high temperature flue gas, it comes out with the fluidized gas in the dryer instead, thus the loss of the heat is reduced. After being dehumidified, the gas exhausting from the dryer is recycled as the fluidized gas or is sent to the incinerator chamber. No peculiar smell discharges in the process.

Description

粒子干燥器和利用粒子干燥器的湿污泥焚烧处理方法及装置 Particle dryer and wet sludge incineration treatment method and device using particle dryer

技术领域 Technical field

本发明涉及一种干燥器、废弃物的焚烧处理装置和处理方法，特别是一种粒子干燥器及利用粒子干燥器的湿污泥焚烧处理装置和方法。技术背景 The present invention relates to a dryer, a waste incineration treatment apparatus and a treatment method, and more particularly to a particle dryer and a wet sludge incineration treatment apparatus and method using the particle dryer. technical background

污泥是污水处理后的固体残留物，污泥量约占污水处理量的 3%。~5%。（以含水率 97%计）。我国的工业和生活污水处理量正在迅速增加，随着污水处理厂的不断兴建，必将产生更多的污泥。污泥的成分非常复杂，除含有大量的水分外，还含有普通有机质、难降解的有机物、多种微量元素、病原微生物和寄生虫卵、重金属等成分。 Sludge is a solid residue after sewage treatment, and the amount of sludge accounts for about 3% of the sewage treatment. ~5%. (in terms of water content of 97%). The amount of industrial and domestic sewage treatment in China is increasing rapidly. With the continuous construction of sewage treatment plants, more sludge will be produced. The composition of the sludge is very complicated. In addition to containing a large amount of water, it also contains common organic matter, refractory organic matter, various trace elements, pathogenic microorganisms, parasite eggs, heavy metals and other components.

以焚烧为核心工艺的污泥处理方法能够最大程度地满足减量化、稳定化和无害化的要求。但是现有的污泥焚烧方法，大都要求先使用专门的设备对污泥进行干化等预处理后再进行焚烧，干化与焚烧在两套设备中完成，系统复杂；干化设备能耗大，运行成本高，安全性要求高；而且简单焚烧干化污泥，容易产生 NOx，需在焚烧炉后配备脱氮装置；同时，由于污泥中含硫，还需在焚烧炉后配备脱硫装置。这使得污泥焚烧系统复杂、无害化处理成本高昂。 The sludge treatment method with incineration as the core process can meet the requirements of reduction, stabilization and harmlessness to the greatest extent. However, most of the existing sludge incineration methods require special equipment to dry the sludge and then incinerate it. The drying and incineration are completed in two sets of equipment, and the system is complicated; the drying equipment consumes a large amount of energy. , high running cost and high safety requirements; and simple incineration of dry sludge, easy to produce NOx, need to be equipped with denitrification device after the incinerator; meanwhile, due to sulfur in the sludge, it is necessary to equip the incinerator with a desulfurization device. . This makes the sludge incineration system complex and harmless.

直接向焚烧炉内添加未经干化的湿污泥进行焚烧，可以将污泥的干燥、焚烧甚至烟气的无害化处理等单元工艺集中在单一装置中同时进行，简化污泥焚烧处理工艺，降低处理成本；但湿污泥中所含的水分将随焚烧所产生的高温烟气一起排出炉膛，带走大量热量，因此需要加入大量辅助燃料才能达到能量平衡。发明内容 Adding un-dried wet sludge directly to the incinerator for incineration, the unit processes such as drying, incineration and even harmless treatment of the sludge can be concentrated in a single unit at the same time, simplifying the sludge incineration treatment process , to reduce the cost of treatment; but the moisture contained in the wet sludge will be discharged along with the high-temperature flue gas generated by the incineration, taking away a lot of heat, so a large amount of auxiliary fuel needs to be added to achieve energy balance. Summary of the invention

本发明的目的是提供一种粒子干燥器，该粒子干燥器中可同时加入热载体和湿污泥，湿污泥在该粒子干燥器中与热载体直接掺混进行换热，湿污泥被加热，其中的水分蒸发出来从而实现干燥，湿污泥在干燥的过程中处于流化状态，蒸发出来的水分随流化气体排出干燥器，干燥的污泥与热载体一起排出粒子干燥器。 The object of the present invention is to provide a particle dryer in which a heat carrier and a wet sludge can be simultaneously added, and the wet sludge is directly mixed with a heat carrier in the particle dryer for heat exchange, and the wet sludge is Heating, wherein the water is evaporated to achieve drying, the wet sludge is in a fluidized state during the drying process, and the evaporated water is discharged to the dryer with the fluidizing gas, and the dried sludge is discharged together with the heat carrier to the particle dryer.

本发明的目的还在于提供一种带粒子干燥器的循环流化床湿污泥干化焚烧处理方法，该方法将污泥的干化和焚烧有机结合起来，集中在单一循环流化床装置中进行，湿污泥干化所需热量直接来自于污泥以及辅助燃料的燃烧，干化后的污泥送回炉膛焚烧。 The object of the present invention is to provide a circulating fluidized bed wet sludge drying incineration treatment method with a particle dryer, which combines the drying and incineration of sludge and concentrates in a single circulating fluidized bed device. get on, The heat required for the drying of the wet sludge comes directly from the combustion of the sludge and the auxiliary fuel, and the dried sludge is sent back to the furnace for incineration.

本发明的第三目的是提供一种带粒子干燥器的循环流化床湿污泥干化焚烧处理装置，该装置为可将污泥的干化和焚烧有机结合起来集中进行的一体化装置，湿污泥干化所需热量直接来自于污泥及辅助燃料的燃烧放出的热量，干化后的污泥在炉膛内焚烧。 A third object of the present invention is to provide a circulating fluidized bed wet sludge drying incineration treatment device with a particle dryer, which is an integrated device capable of organically combining sludge drying and incineration. The heat required for the drying of the wet sludge is directly derived from the heat released by the combustion of the sludge and the auxiliary fuel, and the dried sludge is incinerated in the furnace.

本发明的技术方案如下： The technical solution of the present invention is as follows:

本发明提供的粒子干燥器，其结构包括：一腔体 600, 腔体 600上设有湿污泥加入口 609、排气口 610和干污泥出口 611 ; 腔体 600内腔下部水平安装一布风管 630，或者安装一设有风帽 621的布风板 620; 腔体 600上还设有热灰入口 613，热灰入口 613位于腔体 600的底壁或侧壁上。 The particle dryer provided by the present invention comprises: a cavity 600, a wet sludge inlet port 609, an exhaust port 610 and a dry sludge outlet 611; the lower portion of the cavity 600 is horizontally mounted. The air duct 630 is provided with a windshield 620 provided with a hood 621; the cavity 600 is further provided with a hot ash inlet 613, and the hot ash inlet 613 is located on the bottom wall or the side wall of the cavity 600.

干污泥出口 611设在腔体 600上与热灰入口 613相对的外侧壁中部。腔体 600内腔中下部设有固定在腔体 600底腔壁及两侧腔壁上的纵向出口隔墙 607，出口隔墙 607 将腔体 600隔成出口室 604和带有热灰入口 613的换热室 602; 干污泥出口 611设在出口室 604的底部。湿污泥加入口 609位于腔体 600顶盖上偏向热灰入口 613的一侧。排气口 610位于腔体 600顶盖上偏向干污泥出口 611的一侧。腔体 600为流化速度为 0.3~0.8m/s的鼓泡流化床。 The dry sludge outlet 611 is disposed in the middle of the outer side wall of the cavity 600 opposite the hot ash inlet 613. The lower part of the inner cavity of the cavity 600 is provided with a longitudinal outlet partition 607 fixed on the bottom wall of the cavity 600 and the side walls of the cavity 600. The outlet partition 607 partitions the cavity 600 into an outlet chamber 604 and has a hot ash inlet 613. The heat exchange chamber 602; the dry sludge outlet 611 is disposed at the bottom of the outlet chamber 604. The wet sludge inlet port 609 is located on the side of the chamber 600 that is biased toward the hot ash inlet 613. The vent 610 is located on the side of the chamber 600 that is biased toward the dry sludge outlet 611. The cavity 600 is a bubbling fluidized bed having a fluidization velocity of 0.3 to 0.8 m/s.

其工作原理是： Its working principle is:

将湿污泥从干燥器的腔体 600顶部的湿污泥加入口 609加入，从热灰入口 613进入的高温热灰为千燥器提供热量，湿污泥在下落过程中与处于流化状态的热灰直接掺混，使湿污泥被干燥并造粒。干化了的污泥与冷却了的热灰一起从干污泥出口 611排出，湿污泥中蒸发出来的水分随流化气体从排气口 6ί0排放，其排气进行除尘、除湿后可作为流化气体循环利用。本发明提供的湿污泥干化焚烧处理方法，在循环流化床焚烧炉或循环流化床锅炉中干化焚烧含水率在 60〜90%之间的湿污泥，在循环流化床髙温循环灰回路中设置粒子干燥器，旋风分离器分离下来的高温循环灰，一部分直接返回炉膛，另一部分进入粒子干燥器；湿污泥在粒子干燥器中与高温循环灰直接糁混，被加热、干燥成为含水率为 5〜20%的干化污泥后，再与循环灰一起返回炉膛焚烧。 The wet sludge is added from the wet sludge inlet port 609 at the top of the cavity 600 of the dryer, and the high temperature hot ash entering from the hot ash inlet 613 supplies heat to the dryer, and the wet sludge is in a fluidized state during the falling process. The hot ash is directly blended so that the wet sludge is dried and granulated. The dried sludge is discharged from the dry sludge outlet 611 together with the cooled hot ash, and the water evaporated from the wet sludge is discharged from the exhaust port 6ί0 with the fluidizing gas, and the exhaust gas can be used as a dust removal and dehumidification. Fluidized gas recycling. The wet sludge drying incineration treatment method provided by the invention is dried in a circulating fluidized bed incinerator or a circulating fluidized bed boiler to incinerate wet sludge having a moisture content of 60 to 90%, in a circulating fluidized bed. A particle dryer is arranged in the warm cycle ash circuit, and the high temperature circulating ash separated by the cyclone separator is directly returned to the furnace and the other part enters the particle dryer; the wet sludge is directly mixed with the high temperature circulating ash in the particle dryer, and is heated. After drying to a dry sludge having a water content of 5 to 20%, it is returned to the furnace together with the circulating ash for incineration.

所述的粒子干燥器为鼓泡流化床式，其底部通入流化气体。通过热灰分配阀调节进入粒子干燥器的高温循环灰量，将粒子干燥器的排气温度控制在 80~150°C。可以通过向循环回路中添加惰性床料以增加总循环灰量的方式，增强热灰分配阀对粒子干燥器的排气温度的调节。粒子干燥器排气经除尘和除湿后，送回粒子干燥器作为流化气体循环使用，或者送入炉膛焚烧。 The particle dryer is of a bubbling fluidized bed type, and a fluidizing gas is introduced into the bottom. The high-temperature circulating ash entering the particle dryer is adjusted by a hot ash distribution valve, and the exhaust temperature of the particle dryer is controlled at 80 to 150 °C. Can pass The adjustment of the exhaust gas temperature of the particle dryer by the hot ash distribution valve is enhanced by adding an inert bed material to the circulation loop to increase the total circulating ash amount. After the dust of the particle dryer is dedusted and dehumidified, it is sent back to the particle dryer for circulation as a fluidizing gas, or sent to the furnace for incineration.

本发明的方法在循环流化床焚烧炉或循环流化床锅炉的高温循环灰循环回路中设置鼓泡流化床式粒子干燥器，旋风分离器分离下来的高温循环灰经机械式或气动控制式热灰分配阀，一部分进入返料器直接返回炉膛，另一部分进入粒子干燥器；含水率在 60〜90%之间的湿污泥经打散装置打散后从设在粒子干燥器上的湿污泥加入口加入；通过热灰分配阀调节进入粒子干燥器的高温循环灰量，可以将粒子干燥器排气温度控制在 80〜150°C，以保证湿污泥不会发生热解、气化，抑制 CO的产生，防止发生爆炸；湿污泥在粒子干燥器中与循环灰直接掺混，并被加热，所含水分蒸发，湿污泥被干燥至含水率为 5〜20%的干化污泥，与循环灰一起通过机械输送方式或者气力方式返回炉膛焚烧；对于采用带绝热炉膛的循环流化床焚烧炉干化焚烧湿污泥，当所加入的湿污泥含水率低于 72%左右时（具体数值根据污泥特性确定），可以不加辅助燃料，单纯干化焚烧湿污泥，即可使炉膛保持能够保证污泥完全燃烧的 800〜950°C 的高温；当湿污泥含水率高于 72%左右时（具体数值根据污泥特性确定），一般需要加入煤、油、气等辅助燃料，才能使炉膛保持 800〜950Ό的高温；由于送入炉膛焚烧的是含水率较低的干化污泥，因此焚烧产生的烟气中只含有少量水蒸气，排出炉膛的热量大大减少；湿污泥所含水分大部分在粒子干燥器中被蒸发出来，随粒子干燥器流化气体从其顶部引出；粒子干燥器排气经细粉分离器分离出细粉和灰尘、冷却器冷凝出冷凝水后，再经风机加压，作为粒子干燥器流化气体送回粒子干燥器循环使用，或者送入炉膛焚烧；细粉分离器分离出的细粉和灰尘通过机械输送方式或者气力方式送回炉膛焚烧，冷却器冷凝出的冷凝水送回污水处理厂处理。 The method of the invention provides a bubbling fluidized bed type particle dryer in a high temperature circulating ash circulation loop of a circulating fluidized bed incinerator or a circulating fluidized bed boiler, and the high temperature circulating ash separated by the cyclone separator is mechanically or pneumatically controlled Hot ash distribution valve, one part enters the returning device and returns directly to the furnace, and the other part enters the particle dryer; the wet sludge with water content between 60~90% is broken up by the dispersing device and is set from the particle dryer The wet sludge is added to the inlet; the high-temperature circulating ash entering the particle dryer is adjusted by the hot ash distribution valve, and the particle dryer exhaust temperature can be controlled at 80 to 150 ° C to ensure that the wet sludge does not pyrolyze, Gasification, inhibiting the production of CO, preventing explosion; wet sludge is directly mixed with circulating ash in the particle dryer, heated, the water content is evaporated, and the wet sludge is dried to a moisture content of 5 to 20%. The dried sludge is returned to the furnace by mechanical conveying or pneumatic means together with the circulating ash; for drying the incinerated wet sludge by using a circulating fluidized bed incinerator with an insulated furnace When the moisture content of the added wet sludge is less than 72% (the specific value is determined according to the characteristics of the sludge), the auxiliary sludge can be cleaned without the auxiliary fuel, and the furnace can be kept to ensure the complete combustion of the sludge. High temperature of 800~950°C; When the moisture content of wet sludge is higher than 72% (the specific value is determined according to the characteristics of sludge), it is generally necessary to add auxiliary fuel such as coal, oil and gas to maintain the furnace at 800~950Ό. High temperature; Since the furnace is incinerated into a dry sludge with a low moisture content, the flue gas generated by incineration contains only a small amount of water vapor, and the heat discharged from the furnace is greatly reduced; the moisture content of the wet sludge is mostly dried in the particles. The evaporator is evaporated out, and the fluidized gas is taken out from the top of the particle dryer; the particulate dryer exhausts the fine powder and dust through the fine powder separator, the cooler condenses the condensed water, and then is pressurized by the fan. The particle drier fluidized gas is sent back to the particle dryer for recycling, or sent to the furnace for incineration; the fine powder and dust separated by the fine powder separator are mechanically transported. Pneumatic loopback mode by incineration furnace, the cooler condensate condensed back to the sewage treatment plant.

本发明的方法也可用于常规循环流化床燃煤锅炉掺烧湿污泥，在循环流化床锅炉中增设粒子干燥器，并将返料器替换为热灰分配阀，通过热灰分配阀从锅炉高温循环灰回路中分流出部分热灰送入粒子干燥器中，将湿污泥从粒子干燥器加入，与湿污泥直接掺混，干化湿污泥，再将干化污泥与循环灰一起送回炉膛焚烧；粒子干燥器排气引出，进行除尘、除湿，循环使用或者送入炉膛焚烧。本发明提供的带有粒子干燥器的湿污泥焚烧处理装置，包括：其上部依次连通的循环流化床焚烧炉炉膛 1、高温气固分离器 2和尾部烟道 3，以及热灰分配返料阀 4、污泥打散装置 5、粒子干燥器 6和由相连通的细粉分离器 71、冷却器 72、汽水分离器 73及风机 74组成的干燥器排气处理系统 7，： The method of the invention can also be used for mixing circulating wet sludge in a conventional circulating fluidized bed coal-fired boiler, adding a particle dryer in the circulating fluidized bed boiler, and replacing the returning device with a hot ash distribution valve through a hot ash distribution valve Part of the hot ash is sent from the high-temperature circulating ash circuit of the boiler to the particle dryer, the wet sludge is added from the particle dryer, directly mixed with the wet sludge, the wet sludge is dried, and the dried sludge is The circulating ash is sent back to the furnace for incineration; the particle dryer is taken out and dedusted, dehumidified, recycled or sent to the furnace for incineration. The wet sludge incineration treatment device with a particle dryer provided by the invention comprises: a circulating fluidized bed incinerator furnace 1, a high temperature gas-solid separator 2 and a tail flue 3, which are sequentially connected in an upper portion thereof, and a hot ash distribution back Material valve 4, The sludge dispersing device 5, the particle dryer 6 and the dryer exhaust gas treatment system 7 composed of the connected fine powder separator 71, the cooler 72, the steam separator 73 and the fan 74, are:

热灰分配返料阀 4位于高温气固分离器 2下方，入口与分离器料腿 21相连通，出口分别与焚烧炉炉膛 1和粒子干燥器 6相连通，其具体结构为- 在分离器料腿 21正下方设置一竖直分流板 402，该竖直分流板 402两侧分别设置上部相通，底面处于同一水平高度的热灰分配返料阀第一进料室 403 和第二进料室 405, 竖直分流板 402将分离器料腿 21在第一进料室 403和第二进料室 405底面上的投影分成两个部分；还包括第一出料室 404和第二出料室 406，第一出料室 404和第二出料室 406的上部分别设有第一溢流口 407和第二溢流口 408，第一溢流口 407和第二溢流口 408底部处于同一水平高度； The hot ash distribution return valve 4 is located below the high temperature gas-solid separator 2, the inlet is connected to the separator material leg 21, and the outlet is connected to the incinerator furnace 1 and the particle dryer 6, respectively, and the specific structure is - in the separator material A vertical diverter plate 402 is disposed directly below the leg 21, and the two sides of the vertical diverter plate 402 are respectively disposed with the upper portion communicating with the hot ash distribution return valve at the same level. The first feeding chamber 403 and the second feeding chamber 405 The vertical splitter plate 402 divides the projection of the separator legs 21 on the bottom surfaces of the first feed chamber 403 and the second feed chamber 405 into two portions; further comprising a first discharge chamber 404 and a second discharge chamber 406 The first discharge chamber 404 and the second discharge chamber 406 are respectively provided with a first overflow port 407 and a second overflow port 408, and the first overflow port 407 and the second overflow port 408 are at the same level. Height

第一进料室 403与第一出料室 404底部通过第一水平孔 409相连通，第一出料室 404上部通过第一溢流口 407与焚烧炉炉膛 1相连通；第二进料室 405与第二出料室 406底部通过第二水平孔 410相连通；第一水平孔 409和第二水平孔 410顶端处于同一水平高度；竖直分流板 402顶端不低于第一水平孔 409顶端，且不高于第一溢流口 407底端；第一出料室 404、第一进料室 403、第二进料室 405和第二出料室 406底面均设置带风帽的布风板，布风板下方设置分别与所述第一出料室 404、第一进料室 403、第二进料室 405和第二出料室 406相对应的风室，风室内通入流量可调节的流化风；第一出料室 404与第二出料室 406之间有平衡风管 401相连通。 The first feeding chamber 403 communicates with the bottom of the first discharging chamber 404 through the first horizontal hole 409, and the upper portion of the first discharging chamber 404 communicates with the incinerator furnace 1 through the first overflow opening 407; the second feeding chamber 405 is in communication with the bottom of the second discharge chamber 406 through the second horizontal hole 410; the first horizontal hole 409 and the top end of the second horizontal hole 410 are at the same level; the top end of the vertical splitter 402 is not lower than the top of the first horizontal hole 409 And not higher than the bottom end of the first overflow port 407; the first discharge chamber 404, the first feed chamber 403, the second feed chamber 405 and the second discharge chamber 406 are provided with a hood with a hood a plenum corresponding to the first discharge chamber 404, the first feed chamber 403, the second feed chamber 405, and the second discharge chamber 406 respectively disposed under the air distribution plate, and the flow rate in the air chamber is adjustable The fluidizing wind; the first discharge chamber 404 and the second discharge chamber 406 are connected to each other by a balance air duct 401.

粒子干燥器 6通过第二溢流口 408与热灰分配返料阀 4相连通，其具体结构为：在粒子干燥器 6内靠近热灰分配返料阀 4的第二溢流口 408处设有竖直的入口隔墙 605，将粒子干燥器 6内部分为底部相通的入口室 601和换热室 602; 入口室 601 上部与第二溢流口 408相连通;入口室 601和换热室 602底面均设置带风帽的布风板，布风板下方设置分别与入口室 601和换热室 602相对应的风室，风室内通入流量可调节的流化气体；换热室 602内的流化气体为惰性气体或者经过冷却的焚烧炉烟气，其流化速度为 0.4〜1.5m/s; 换热室 602顶部靠近入口室 601处设有湿污泥加入口 609，顶部远离入口室 601处设有排气口 610; The particle dryer 6 communicates with the hot ash distribution return valve 4 through the second overflow port 408, and has a specific structure: is disposed in the particle dryer 6 near the second overflow port 408 of the hot ash distribution return valve 4. There is a vertical inlet partition 605, which divides the interior of the particle dryer 6 into a bottom-connecting inlet chamber 601 and a heat exchange chamber 602; the upper portion of the inlet chamber 601 is in communication with the second overflow port 408; the inlet chamber 601 and the heat exchange chamber An air distribution plate with a hood is disposed on the bottom surface of the 602, and a wind chamber corresponding to the inlet chamber 601 and the heat exchange chamber 602 is disposed under the air distribution plate, and a fluidizing gas with adjustable flow rate is introduced into the air chamber; The fluidizing gas is an inert gas or a cooled incinerator flue gas having a fluidization rate of 0.4 to 1.5 m/s; a heat sludge chamber 602 is provided near the inlet chamber 601 with a wet sludge inlet port 609, and the top portion is away from the inlet chamber. 601 is provided with an exhaust port 610;

污泥打散装置 5为机械式或气力式污泥打散装置，通过湿污泥加入口 609与粒子千燥器 6相连通； The sludge dispersing device 5 is a mechanical or pneumatic sludge dispersing device, and is connected to the particle dryer 6 through the wet sludge adding port 609;

粒子干燥器 6上远离所述第二溢流口 408—侧设有干污泥出口 611，干污泥出口 611通过干污泥返料器 612或第一螺旋给料机 613与焚烧炉炉膛 1相连通；粒子干燥器 6的排气口 610与所述干燥器排气处理系统 7相连通； A dry sludge outlet 611 is disposed on the particle dryer 6 away from the second overflow port 408, and the dry sludge outlet 611 passes through the dry sludge returner 612 or the first screw feeder 613 and the incinerator furnace 1 Connected; particle drying The exhaust port 610 of the device 6 is in communication with the dryer exhaust treatment system 7;

干燥器排气处理系统 7的细粉分离器 71 的细粉出口通过细粉返料器 711或第二螺旋给料机 712与焚烧炉炉膛 1相连，将从干燥器排气中分离出来的污泥细粉送回焚烧炉炉膛 1。 The fine powder outlet of the fine powder separator 71 of the dryer exhaust treatment system 7 is connected to the incinerator furnace 1 through the fine powder feeder 711 or the second screw feeder 712, and the dirt separated from the dryer exhaust gas The fine powder is sent back to the incinerator furnace 1.

干污泥出口 611设置在粒子干燥器 6的换热室 602远离所述第二溢流口 408的侧壁上，其底端与第二溢流口 408底端等高；干污泥出口 611通过干污泥返料器 612与焚烧炉炉膛 1相连通，将经过干化的污泥和冷却后的循环灰一起经干污泥返料器 612 送回焚烧炉炉膛 1。 The dry sludge outlet 611 is disposed on the side wall of the heat exchanger chamber 602 of the particle dryer 6 away from the second overflow port 408, and the bottom end thereof is equal to the bottom end of the second overflow port 408; the dry sludge outlet 611 The dry sludge returner 612 is connected to the incinerator furnace 1 and the dried sludge and the cooled circulating ash are sent back to the incinerator furnace 1 via the dry sludge returner 612.

在粒子干燥器 6内远离第二溢流口 408的换热室 602的一侧，设置与入口隔墙 605 平行的出口隔墙 607，在换热室 602内分隔出出口室 604，出口室 604的底面设置带风帽的布风板，布风板下方设置与出口室 604相对应的风室，风室内通入流量可调节的流化气体；由出口隔墙 607分隔的所述换热室 602与出口室 604上部相通；出口隔墙 607顶端与第二溢流口 408底端等高；干污泥出口 611设置在出口室 604底面，通过第一螺旋给料机 613与焚烧炉炉膛 1相连通，将经过干化的污泥和冷却后的循环灰一起经第一螺旋给料机 613送回焚烧炉炉膛 1。 On the side of the particle dryer 6 remote from the heat exchange chamber 602 of the second overflow port 408, an outlet partition 607 is provided in parallel with the inlet partition 605, and an outlet chamber 604 is partitioned in the heat exchange chamber 602. The outlet chamber 604 An air distribution plate with a hood is disposed on the bottom surface, a wind chamber corresponding to the outlet chamber 604 is disposed under the air distribution plate, and a fluidizing gas with adjustable flow rate is introduced into the air chamber; the heat exchange chamber 602 is separated by the outlet partition wall 607. The top of the outlet partition 607 is connected to the bottom end of the second overflow opening 408; the dry sludge outlet 611 is disposed on the bottom surface of the outlet chamber 604, and is connected to the incinerator furnace 1 through the first screw feeder 613. The dried sludge and the cooled circulating ash are sent back to the incinerator furnace 1 via the first screw feeder 613.

竖直分流板 402将分离器料腿 21在第一进料室 403和第二进料室 405底面上的投影分成的两个部分的面积之比为 0.25〜4.0。 The vertical splitter plate 402 has a ratio of the area of the two portions into which the projection of the separator feed leg 21 on the bottom surfaces of the first feed chamber 403 and the second feed chamber 405 is 0.25 to 4.0.

干燥器排气处理系统 7的风机 74出口通过一流化气体管路 741与粒子千燥器 6 的换热室 602底部风室相连通。 The fan 74 outlet of the dryer exhaust treatment system 7 is connected to the bottom plenum of the heat exchange chamber 602 of the particle dryer 6 through the pilot gas line 741.

干燥器排气处理系统 7的风机 74出口设有一分支管路 742与焚烧炉炉膛 1相连。干燥器排气处理系统 ·7·的细粉'返料器 711或第二螺旋给料机 712入口设有惰性床料加入口 713。 The outlet of the fan 74 of the dryer exhaust treatment system 7 is provided with a branch line 742 connected to the incinerator furnace 1 . Dryer Exhaust Treatment System The inlet of the fine powder 'returner 711 or the second screw feeder 712 is provided with an inert bed material inlet 713.

本发明的带有粒子干燥器的湿污泥焚烧处理装置的原理是： The principle of the wet sludge incineration treatment apparatus with particle dryer of the present invention is:

在循环流化床焚烧炉旋风分离器分离下来的高温循环灰经热灰分配返料阀分配，一部分直接返回炉膛，另一部分进入粒子干燥器；含水率在 60〜90%之间的湿污泥经打散装置打散后从设在粒子干燥器上的湿污泥加入口加入；粒子干燥器为鼓泡流化床式，底部通入流化气体，热灰分配返料阀分流至粒子干燥器的高温循环灰直接与湿污泥掺混，加热和干燥湿污泥。 The high-temperature circulating ash separated in the circulating fluidized bed incinerator cyclone separator is distributed by the hot ash distribution return valve, one part is directly returned to the furnace, and the other part enters the particle dryer; the wet sludge with water content between 60~90% After being dispersed by the dispersing device, it is added from the wet sludge inlet port provided on the particle dryer; the particle dryer is a bubbling fluidized bed type, the bottom is filled with fluidizing gas, and the hot ash distribution return valve is branched to the particle dryer. The high temperature circulating ash is directly blended with the wet sludge to heat and dry the wet sludge.

通过调节热灰分配返料阀第一进料室、第二进料室以及第一出料室、第二出料室的流化风速，可以将循环灰在直接返回炉膛与进入粒子干燥器之间进行分配，从而控制进入粒子干燥器的高温循环灰量，将粒子干燥器排气温度控制在 80〜15(TC，并提供足够的热量将湿污泥干化至含水率 5~20%，. 与循环灰一起通过返料器送回炉膛焚烧。 By adjusting the fluidized wind speed of the first feed chamber, the second feed chamber, and the first discharge chamber and the second discharge chamber of the hot ash distribution return valve, the circulating ash can be directly returned to the furnace and into the particle dryer. Allocation, thus controlling The high-temperature circulating ash entering the particle dryer, the particle dryer exhaust temperature is controlled at 80~15 (TC, and provides enough heat to dry the wet sludge to a moisture content of 5~20%, together with the circulating ash Returned to the furnace through the return feeder for incineration.

当热灰直接返料口与干污泥返料口的高度不等时，第一溢流口与第二溢流口的气体压力不等，可以通过分流板的位置来平衡循环灰直接返回炉膛与流入粒子干燥器两路的流动阻力。当热灰直接返料口高于干污泥返料口时，第一溢流口压力较低，分流板将分离器料腿在第一进料室和第二进料室底面上的投影分割成的两部分的面积之比应小于 1 ; 反之则应大于 1。 When the height of the hot ash direct return port and the dry sludge return port are not equal, the gas pressures of the first overflow port and the second overflow port are not equal, and the circulating ash can be balanced to return directly to the furnace through the position of the splitter plate. Flow resistance with two paths into the particle dryer. When the hot ash direct return port is higher than the dry sludge return port, the first overflow port pressure is lower, and the splitter plate divides the splitter material legs on the first feed chamber and the second feed chamber bottom surface. The ratio of the area of the two parts should be less than 1; otherwise it should be greater than 1.

湿污泥所含水分大部分在粒子干燥器中被蒸发出来，随粒子干燥器流化气体从粒子干燥器顶部引出；粒子干燥器排气经细粉分离器分离出细粉和灰尘、冷却器冷凝出冷凝水后，再经风机加压，作为粒子干燥器流化气体送回粒子干燥器循环使用，部分送入炉膛焚烧；细粉分离器分离出的细粉和灰尘通过机械输送方式或者气力方式送回炉膛焚烧，冷却器冷凝出的冷凝水送回污水处理厂处理。 Most of the moisture content of the wet sludge is evaporated in the particle dryer, and the fluidized gas is taken out from the top of the particle dryer with the particle dryer; the particle dryer exhausts the fine powder and dust through the fine powder separator, and the cooler After condensing the condensed water, it is pressurized by a fan, sent to the particle dryer as a particle dryer fluidized gas for recycling, and partially sent to the furnace for incineration; the fine powder and dust separated by the fine powder separator are mechanically transported or pneumatically The method is sent back to the furnace for incineration, and the condensed water condensed by the cooler is sent back to the sewage treatment plant for treatment.

湿污泥的干化过程在粒子干燥器中进行，利用高温循环灰带入的污泥以及辅助燃料的燃烧产生的热量来干化湿污泥，湿污泥被干化为含水率 5〜20%的颗粒状干化污泥，再与循环灰一起返回炉膛焚烧，焚烧产生的高温烟气中只含有少量水蒸气；湿污泥中的大部分水分以水蒸气的形式从粒子干燥器的出口排出，水蒸气在冷却器中冷凝成水，可送回污水处理厂处理，经过除尘除湿的粒子干燥器排气可在封闭循环中循环使用，也可送入炉膛焚烧处理，能够避免污泥干化时产生的有异味的气体排放到环境中。本发明提供的粒子干燥器具有如下优点： The drying process of the wet sludge is carried out in a particle dryer, and the wet sludge is dried by the heat generated by the high temperature circulating ash and the combustion of the auxiliary fuel, and the wet sludge is dried to a moisture content of 5 to 20 % of the granular dry sludge is returned to the furnace together with the circulating ash for incineration. The high temperature flue gas produced by incineration contains only a small amount of water vapor; most of the moisture in the wet sludge is from the outlet of the particle dryer in the form of water vapor. Discharge, water vapor is condensed into water in the cooler, and can be sent back to the sewage treatment plant for treatment. The dehumidification and dehumidification of the particle dryer can be recycled in a closed cycle or sent to the furnace for incineration to avoid sludge drying. The odorous gas generated during the discharge is discharged into the environment. The particle dryer provided by the invention has the following advantages:

湿污泥在粒子干燥器中在流化状态下与热灰进行直接换热，充分利用热灰的热量加热湿污泥，使湿污泥的水分蒸发出来从而实现干燥，蒸发出来的水分以水蒸气形式随流化气体排出干燥器，这样可以将含水率较高的湿污泥迅速干化至含水率 20%以下，干燥的污泥与热灰一起排出粒子干燥器，即可送入焚烧炉焚烧。 The wet sludge is directly exchanged with the hot ash in a fluidized state in a particle dryer, and the heat of the hot ash is utilized to heat the wet sludge, so that the moisture of the wet sludge is evaporated to achieve drying, and the evaporated water is water. The vapor form is discharged to the dryer with the fluidizing gas, so that the wet sludge with high water content can be quickly dried to a moisture content of less than 20%, and the dried sludge is discharged to the incinerator together with the hot ash. Burning.

本发明提供的带粒子干燥器的循环流化床湿污泥干化焚烧处理方法和处理装置具有如下优点：突破先干化再焚烧、两个过程各自独立进行的模 5 将污泥的干化和焚烧有机结合起来，集中在单一装置中进行，大大简化了湿污泥的干化焚烧处理工艺，简化了干化焚烧设备；湿污泥干化所需热量直接来自于污泥以及辅助燃料的燃烧，热粒子与湿污泥在粒子干燥器中直接接触，充分掺混，强化了传热，使湿污泥迅速被加热、干燥。焚烧炉采用循环流化燃烧的方式，具有抑止 NOx生成和脱硫功能。湿污泥中所含的水分大部分不再随焚烧产生的高温烟气排放，而是集中在粒子干燥器排出的低温气体中，减少了系统的热量损失，减少了焚烧炉辅助燃料的消耗量，或者使能够不添加辅助燃料、单独干化焚烧的湿污泥含水率的上限提高；污泥干化中产生的气体经处理后可循环使用或者送入炉膛焚烧，使处理过程中不排放有异味的气体。 The circulating fluidized bed wet sludge drying incineration treatment method and treatment device with particle dryer provided by the invention has the following advantages: Breaking through the first drying and re-incineration, and the two processes independently performing the mold 5 to dry the sludge It is combined with incineration and concentrated in a single unit, which greatly simplifies the drying and incineration process of wet sludge and simplifies the drying and incineration equipment. The heat required for drying the wet sludge comes directly from the sludge and auxiliary fuel. Heat of combustion The particles are in direct contact with the wet sludge in the particle dryer, and are fully blended to enhance heat transfer, so that the wet sludge is quickly heated and dried. The incinerator adopts a method of circulating fluidized combustion, which has the functions of suppressing NOx generation and desulfurization. Most of the moisture contained in the wet sludge is no longer discharged with the high-temperature flue gas generated by the incineration, but is concentrated in the low-temperature gas discharged from the particle dryer, which reduces the heat loss of the system and reduces the consumption of auxiliary fuel in the incinerator. Or increase the upper limit of the moisture content of the wet sludge that can be independently burned without adding auxiliary fuel; the gas generated in the sludge drying can be recycled or sent to the furnace for incineration, so that no emissions are discharged during the treatment. Odorous gas.

本发明提供的粒子干燥器和带有粒子干燥器的湿污泥焚烧处理装置可以用于污泥等高含水率的废弃物的干化，如城市下水污泥、造纸污泥、石化行业污泥等，也可用于垃圾填埋场浓缩渗滤液的干化。附图说明 The particle dryer provided by the present invention and the wet sludge incineration treatment device with the particle dryer can be used for drying of waste water with high water content such as sludge, such as urban sewage sludge, paper sludge, and petrochemical industry sludge. Etc., can also be used for the drying of concentrated leachate in landfills. DRAWINGS

- 附图 1是本发明实施例 1粒子干燥器的示意图。 - Figure 1 is a schematic view of a particle dryer of Embodiment 1 of the present invention.

附图 2是本发明实施例 1粒子干燥器的 A— A ^视图. Figure 2 is a view of the A-A ^ of the particle dryer of the embodiment of the present invention.

附图 3是本发明实施例 2粒子干燥器的示意图。 Figure 3 is a schematic view of a particle dryer of Embodiment 2 of the present invention.

附图 4是本发明实施例 2粒子干燥器的 B—B剖视图 Figure 4 is a cross-sectional view showing the B-B of the particle dryer of the embodiment of the present invention.

附图 5是本发明实施例 3，带有粒子干燥器的湿污泥焚烧处理方法的示意图。附图 6是本发明实施例 4，带有粒子干燥器的湿污泥焚烧处理方法的示意图。附图 7是本发明实施例 5，带有粒子干燥器的湿污泥焚烧处理装置的示意图。附图 8是本发明实施例 5，带有粒子干燥器的湿污泥焚烧处理装置的热灰分配阀和粒子干燥器示意图。 Figure 5 is a schematic view showing a wet sludge incineration treatment method with a particle dryer in Example 3 of the present invention. Figure 6 is a schematic view showing a wet sludge incineration treatment method with a particle dryer in Example 4 of the present invention. Figure 7 is a schematic view showing a wet sludge incineration treatment apparatus with a particle dryer according to Embodiment 5 of the present invention. Figure 8 is a schematic view showing a hot ash distributing valve and a particle dryer of a wet sludge incineration treatment apparatus with a particle dryer in Example 5 of the present invention.

附图 9是本发明实施例 6，带有粒子干燥器的湿污泥焚烧处理装置的示意图。附图 10是本发明实施例 6，带有粒子干燥器的湿污泥焚烧处理装置的热灰分配阀和粒子干燥器示意图。具体实施方式 Figure 9 is a schematic view of a wet sludge incineration treatment apparatus with a particle dryer according to an embodiment of the present invention. Figure 10 is a schematic view showing a hot ash distributing valve and a particle dryer of a wet sludge incineration treatment apparatus with a particle dryer according to an embodiment of the present invention. detailed description

实施例 1 Example 1

本实施例 1的粒子干燥器，其结构如下，包括： The particle dryer of the first embodiment has the following structure, and includes:

一长方体腔体 600，其内腔下部水平安装布风管 630，腔体中下部设有纵向出口隔墙 607将腔体分隔成换热室 602和出口室 604; 换热室 602设有热灰入口 613和湿污泥加入口 609; 出口室 604顶盖上设有排气口 610, 底部设有干污泥出口 611。热灰入口 613位于换热室 602底板上远离出口隔墙 607的一端，数量为 2个。湿污泥加入口 609位于换热室 602顶盖上偏向热灰入口 613的一侧。排气口 610位于出口室 604 顶盖上偏向干污泥出口 32的一侧。换热室 602的流化速度为 0.5m/s，出口室 604的流化速度为 0.4m/_S，两室均为鼓泡流化床。湿污泥从湿污泥加入口 609加入，干污泥从干污泥出口 611随经过冷却的热灰排出。 a rectangular parallelepiped cavity 600, the lower part of the inner cavity is horizontally installed with the air duct 630, and the lower part of the cavity is provided with a longitudinal outlet partition wall 607 to divide the cavity into the heat exchange chamber 602 and the outlet chamber 604; the heat exchange chamber 602 is provided with hot ash The inlet 613 and the wet sludge inlet port 609; the outlet chamber 604 is provided with an exhaust port 610 on the top cover and a dry sludge outlet 611 at the bottom. Hot gray The inlet 613 is located at one end of the bottom of the heat exchange chamber 602 away from the outlet partition 607, and has two. The wet sludge addition port 609 is located on the side of the heat exchange chamber 602 that is biased toward the hot ash inlet 613. The vent 610 is located on the side of the outlet chamber 604 that is biased toward the dry sludge outlet 32. The fluidization rate of the heat exchange chamber 602 is 0.5 m/s, and the fluidization velocity of the outlet chamber 604 is 0.4 m/ _s , and both chambers are bubbling fluidized beds. The wet sludge is added from the wet sludge addition port 609, and the dry sludge is discharged from the dry sludge outlet 611 with the cooled hot ash.

实施例 2 Example 2

本实施例 2的粒子干燥器，其结构如下，包括： The particle dryer of the second embodiment has the following structure, and includes:

—截面为长圆形的柱形腔体 600，其内腔下部水平安装一布风板 620，布风板 620 上设有风帽 621 ; 布风板 620之下的腔室为流化风室 622，腔体 600为鼓泡流化床；腔体 600上设有湿污泥加入口 609、排气口 610、热入口 613和干污泥出口 611 ; 热灰入口 613位于腔体 600侧壁上，干污泥出口 611位于与热灰入口 613相对的侧壁中部；湿污泥加入口 609位于腔体 600顶盖上偏向热灰入口 11的一侧。排气口 610位于腔体 600顶盖上偏向干污泥出口 611的一侧。腔体 600的流化速度为 0.8m/s。垃圾填埋场渗滤液从湿污泥加入口 609加入，干燥后的渗滤液残渣从干污泥出口 611随经过冷却的热灰排出。实施例 3 a cylindrical cavity 600 having an oblong cross section, a wind deflector 620 is horizontally mounted on the lower portion of the inner cavity, and a wind cap 621 is disposed on the air distribution plate 620. The chamber below the air distribution panel 620 is a fluidized air chamber 622 The cavity 600 is a bubbling fluidized bed; the cavity 600 is provided with a wet sludge inlet port 609, an exhaust port 610, a heat inlet 613 and a dry sludge outlet 611; the hot ash inlet 613 is located on the side wall of the cavity 600. The dry sludge outlet 611 is located in the middle of the side wall opposite to the hot ash inlet 613; the wet sludge inlet 609 is located on the side of the cavity 600 that is biased toward the hot ash inlet 11. The vent 610 is located on the side of the cavity 600 that is biased toward the side of the dry sludge outlet 611. The fluidization velocity of the cavity 600 is 0.8 m/s. The landfill leachate is fed from the wet sludge inlet port 609, and the dried leachate residue is discharged from the dry sludge outlet 611 with the cooled hot ash. Example 3

图 5为实施例 3的示意图，由图可知，本实施例 3的带有粒子干燥器的湿污泥焚烧处理方法，在循环流化床焚烧炉中单独干化焚烧含水率为 60%的湿污泥 A，将湿污泥 A从设在粒子干燥器 6上的湿污泥加入口 609加入，加入时被装在加入口 609上的打散装置 5打散；粒子干燥器 6设置在循环流化床焚烧炉循环灰循环回路中，旋风分离器 2分离下来的高温循环灰经机械式热灰分配阀 41，一部分进入返料器 42直接返回炉膛 1，另一部分进入粒子干燥器 6; 粒子千燥器 6为鼓泡流化床式，底部通入流化气体 ·，从炉膛 1下部加入惰性床料，增加总循环量，并通过热灰分配阀 41调节进入粒子干燥器 6的高温循环灰量，将粒子干燥器排气 C温度控制在 80°C左右；湿污泥 A在粒子干燥器 6中与循环灰直接掺混，并被加热，所含水分蒸发，湿污泥 A被干燥至含水率为 20%的干化污泥 B，与循环灰一起通过气力方式返回炉膛 1焚烧；粒子干燥器排气 C从其顶部引出，经细粉分离器 71分离出粉尘 D、冷却器 72冷凝出冷凝水 E后，再经风机 74加压，作为粒子干燥器流化气体送回粒子干燥器 6循环使用；细粉分离器 71分离出的粉尘 D送回炉膛焚烧，冷却器 72冷凝出的冷凝水 E送回污水处理厂处理。实施例 4 Figure 5 is a schematic view of the third embodiment. It can be seen from the figure that the wet sludge incineration treatment method with the particle dryer of the third embodiment is separately dried and incinerated in a circulating fluidized bed incinerator with a moisture content of 60%. Sludge A, wet sludge A is added from the wet sludge addition port 609 provided on the particle dryer 6, and is added by the dispersing device 5 mounted on the inlet port 609 when it is added; the particle dryer 6 is set in the circulation In the circulating ash circulating circuit of the fluidized bed incinerator, the high temperature circulating ash separated by the cyclone 2 passes through the mechanical hot ash distributing valve 41, a part of which enters the returning device 42 and directly returns to the furnace 1 and the other part enters the particle dryer 6; The dryer 6 is a bubbling fluidized bed type, and a fluidized gas is introduced into the bottom. The inert bed material is added from the lower portion of the furnace 1 to increase the total circulation amount, and the high temperature circulating ash entering the particle dryer 6 is regulated by the hot ash distribution valve 41. The amount of the particle dryer exhaust C temperature is controlled at about 80 ° C; the wet sludge A is directly mixed with the circulating ash in the particle dryer 6 and heated, the moisture is evaporated, and the wet sludge A is dried to Dry sludge B with a water content of 20% The ash is returned to the furnace 1 by pneumatic means; the particle dryer exhaust C is taken out from the top thereof, the dust D is separated by the fine powder separator 71, and the condensed water E is condensed by the cooler 72, and then pressurized by the blower 74, as The particle dryer fluidized gas is sent back to the particle dryer 6 for recycling; the dust D separated by the fine powder separator 71 is sent back to the furnace for incineration, and the condensed water E condensed by the cooler 72 is sent back to the sewage treatment. Factory processing. Example 4

图 6为实施例 4的示意图，由图可知，本实施例 4的带有粒子干燥器的湿污泥焚烧处理方法，在循环流化床焚烧炉中添加煤作为辅助燃料干化焚烧含水率为 90%的湿污泥 A, 将湿污泥 A从设在粒子干燥器 6上的湿污泥加入口 609加入，加入时被装在加入口 609上的打散装置 5打散；粒子干燥器 6设置在循环流化床焚烧炉循环灰循环回路中，旋风分离器 2分离下来的高温循环灰经气动控制式热灰分配阀 41，一部分进入返料器 42直接返回炉膛 1，另一部分进入粒子干燥器 6; 粒子千燥器 6为鼓泡流化床式，底部通入流化气体；通过热灰分配阀 41调节进入粒子干燥器 6的高温循环灰量，将粒子干燥器排气 C温度控制在 120Ό左右；湿污泥 A在粒子干燥器 6中与循环灰直接掺混，并被加热，所含水分蒸发，湿污泥 A被干燥至含水率为 15%的干化污泥 B, 与循环灰一起通过机械输送方式返回炉膛 1焚烧；粒子干燥器排气 C从其顶部引出，经细粉分离器 71分离出粉尘 D、冷却器 72冷凝出冷凝水 E后，再经风机 74加压，送入炉膛 1焚烧；细粉分离器 71分离出的粉尘 D送回炉膛 1焚烧，冷却器 72冷凝出的冷凝水 E送回污水处理厂处理。实施例 5 Figure 6 is a schematic view of the fourth embodiment. It can be seen from the figure that the wet sludge incineration treatment method with the particle dryer of the fourth embodiment adds coal to the circulating fluidized bed incinerator as the auxiliary fuel for drying and incineration moisture content. 90% of the wet sludge A, the wet sludge A is added from the wet sludge addition port 609 provided on the particle dryer 6, and is added to the dispersing device 5 mounted on the inlet port 609 when it is added; the particle dryer 6 is arranged in the circulating fluidized bed incinerator circulating ash circulation loop, the high temperature circulating ash separated by the cyclone separator 2 is passed through the pneumatically controlled hot ash distributing valve 41, a part of which enters the returning device 42 and directly returns to the furnace 1 and the other part enters the particle Dryer 6; particle dryer 6 is a bubbling fluidized bed type, and a fluidizing gas is introduced into the bottom; the high-temperature circulating ash amount entering the particle dryer 6 is regulated by the hot ash distributing valve 41, and the particle dryer exhaust C temperature is controlled. At about 120 ;; wet sludge A is directly blended with the circulating ash in the particle dryer 6, and heated, the water content is evaporated, and the wet sludge A is dried to a dried sludge B having a water content of 15%, and Loop gray The furnace drier 1 is incinerated by mechanical conveying; the particle dryer exhaust C is taken out from the top thereof, the dust D is separated by the fine powder separator 71, and the cooler 72 is condensed out of the condensed water E, and then pressurized by the blower 74, and sent The furnace D is incinerated; the dust D separated by the fine powder separator 71 is sent back to the furnace 1 for incineration, and the condensed water E condensed by the cooler 72 is sent back to the sewage treatment plant for treatment. Example 5

图 7和图 8为实施例 5的结构示意图，由图可知，本实施例 5的带有粒子干燥器的湿污泥焚烧处理装置，包括循环流化床焚烧炉炉膛 1、高温气固分离器 2、尾部烟道 3、热灰分配阀 4、污泥打散装置 5、粒子干燥器 6、干燥器排气处理系统 7 (包括细粉分离器 71、冷却器 72、汽水分离器 73及风机 74等）。 7 and FIG. 8 are schematic views showing the structure of the embodiment 5. As shown in the figure, the wet sludge incineration treatment apparatus with the particle dryer of the fifth embodiment includes a circulating fluidized bed incinerator furnace 1 and a high temperature gas-solid separator. 2. Tail flue 3, hot ash distribution valve 4, sludge dispersing device 5, particle dryer 6, dryer exhaust treatment system 7 (including fine powder separator 71, cooler 72, steam separator 73 and fan) 74, etc.).

热灰分配阀 4位于分离器 2下方，入口与分离器料腿 21相连，出口分别与焚烧炉炉膛 1和粒子干燥器 6相连，其具体结构为： The hot ash distribution valve 4 is located below the separator 2, and the inlet is connected to the separator leg 21, and the outlet is connected to the incinerator furnace 1 and the particle dryer 6, respectively, and the specific structure is:

在分离器料腿 21正下方设置一 ^直分流板 402，其两侧分别为热灰分配阀第一进料室 403和第二进料室 405，两室上部相通，底面处于同一水平高度，分流板 402将分离器料腿 21在两室底面上的投影分成两个部分；第一进料室 403与第一出料室 404 底部通过第一水平孔 409相通，第一出料室 404上部通过第一溢流口 407·与焚烧炉炉膛相通；第二进料室 405与第二出料室 406底部通过第二水平孔 410相通，第二出料室 406上部设有第二溢流口 408; 第一溢流口 407和第二溢流口 408底端处于同一水平高度；第一水平孔 409和第二水平孔 410顶端处于同一水平高度；第一出料室 404、第一进料室 403、第二进料室 405、第二出料室 406底面均为带风帽的布风板，其下方分别对应风室，通入流量可调节的流化风。第一出料室 404与第二出料室 406之间有平衡风管 401相连。 ' A straight splitter plate 402 is disposed directly below the separator leg 21, and the two sides of the hot ash distribution valve are respectively a first feeding chamber 403 and a second feeding chamber 405. The upper portions of the two chambers are connected, and the bottom surface is at the same level. The splitter plate 402 divides the projection of the separator material leg 21 on the bottom surface of the two chambers into two parts; the first feed chamber 403 communicates with the bottom of the first discharge chamber 404 through the first horizontal hole 409, and the upper portion of the first discharge chamber 404 The second overflow chamber 405 communicates with the incinerator furnace through the first overflow port 407. The second feed chamber 405 communicates with the bottom of the second discharge chamber 406 through the second horizontal hole 410, and the second discharge chamber 406 has a second overflow port at the upper portion. 408; the first overflow port 407 and the bottom end of the second overflow port 408 are in the same water The first horizontal hole 409 and the second horizontal hole 410 are at the same level; the first discharge chamber 404, the first feed chamber 403, the second feed chamber 405, and the second discharge chamber 406 have a bottom surface. The air distribution plate with the hood is respectively corresponding to the air chamber under the air chamber, and the fluidized air with adjustable flow rate is introduced. A balance duct 401 is connected between the first discharge chamber 404 and the second discharge chamber 406. '

分流板 402顶端与第一溢流口 407底端等高；分流板 402将分离器料腿 21在第一进料室 403和第二进料室 405底面上的投影分成的两个部分的面积之比为 0.25。 The top end of the splitter plate 402 is equal to the bottom end of the first overflow port 407; the area of the two portions of the splitter plate 402 that divides the projection of the separator material leg 21 on the bottom surfaces of the first feed chamber 403 and the second feed chamber 405 The ratio is 0.25.

热灰分配阀 4的第二溢流口 408与粒子干燥器 6相通，粒子干燥器 6的具体结构为： The second overflow port 408 of the hot ash distribution valve 4 is in communication with the particle dryer 6, and the specific structure of the particle dryer 6 is:

粒子干燥器 6内靠近热灰分配阀 4的第二溢流口 408处设有竖直的入口隔墙 605，将粒子干燥器 6内部分为入口室 601和换热室 602; 第二溢流口 408与入口室 601上部相通，入口室 601与换热室 602通过入口隔墙 605分隔，二者底部相通；入口室 601 和换热室 602底面均为带风帽的布风板，其下方分别对应风室，通入流量可以调节的流化气体。换热室 602的流化气体为惰性气体，流化速度为 0.4m/s。换^^室 602顶部靠近入口室 601处设有湿污泥加入口 609, 远离入口室 601处设有排气口 610。 A vertical inlet partition 605 is disposed in the particle dryer 6 near the second overflow port 408 of the hot ash distribution valve 4, and the interior of the particle dryer 6 is divided into an inlet chamber 601 and a heat exchange chamber 602; a second overflow The port 408 is in communication with the upper portion of the inlet chamber 601. The inlet chamber 601 and the heat exchange chamber 602 are separated by an inlet partition 605, and the bottom portions thereof communicate with each other; the bottom surfaces of the inlet chamber 601 and the heat exchange chamber 602 are hoods with hoods, respectively Corresponding to the plenum, a fluidizing gas with adjustable flow rate is introduced. The fluidizing gas of the heat exchange chamber 602 is an inert gas, and the fluidization speed is 0.4 m/s. The top of the change chamber 602 is adjacent to the entrance chamber 601 with a wet sludge inlet 609, and away from the inlet chamber 601 with an exhaust port 610.

粒子干燥器 6湿污泥加入口 609上方设有机械式污泥打散装置 5, 打散后的污泥直接落入粒子干燥器 6内。 The particle dryer 6 is provided with a mechanical sludge dispersing device 5 above the wet sludge inlet port 609, and the dispersed sludge directly falls into the particle dryer 6.

粒子干燥器 6换热室 602远离入口室 601的侧壁上设有干污泥出口 611，干污泥出口 611底端与第二溢流口 408底端等高；干污泥出口 611通过干污泥返料器 612与焚烧炉炉膛 1相连，将经过干化的污泥和冷却后的循环灰一起经干污泥返料器 612送回焚烧炉炉膛 1。 A dry sludge outlet 611 is disposed on the side wall of the heat exchanger chamber 602 of the particle dryer 6 away from the inlet chamber 601, and the bottom end of the dry sludge outlet 611 is equal to the bottom end of the second overflow port 408; the dry sludge outlet 611 is dried. The sludge returner 612 is connected to the incinerator furnace 1 and the dried sludge and the cooled circulating ash are sent back to the incinerator furnace 1 via the dry sludge returner 612.

粒子干燥器的排气口 610与干燥器排气处理系统 7相连，干燥器排气处理系统 7 的风机 74出口通过流化气体管路 741与粒子干燥器 6换热室 602底部风室相连，有分支管路 742与焚烧炉炉膛 1相连。 The vent 610 of the particle dryer is connected to the dryer exhaust treatment system 7, and the outlet of the blower 74 of the dryer exhaust treatment system 7 is connected to the bottom plenum of the heat exchange chamber 602 of the particle dryer 6 through the fluidized gas line 741. A branch line 742 is connected to the incinerator hearth 1.

细粉分离器 71的细粉出口通过第二螺旋给料机 712与焚烧炉炉膛 1相通，将从干燥器排气中分离出来的污泥细粉送回焚烧炉炉膛 1 ; 第二螺旋给料机 712入口设置惰性床料加入口 713，供运行时加入沙子等惰性床料以改善污泥细粉的输运特性及流化特性。实施例 6 The fine powder outlet of the fine powder separator 71 is connected to the incinerator furnace 1 through the second screw feeder 712, and the sludge fine powder separated from the dryer exhaust gas is sent back to the incinerator furnace 1; the second spiral feedstock An inert bed feed port 713 is provided at the inlet of the machine 712 for adding an inert bed material such as sand during operation to improve the transport characteristics and fluidization characteristics of the sludge fine powder. Example 6

图 9和图 10为实施例 6的结构示意图，由图可知，本实施例 6的带有粒子千燥器的湿污泥焚烧处理装置，包括循环流化床焚烧炉炉膛 1、高温气固.分离器 2、尾部烟道 3、热灰分配阀 4、污泥打散装置 5、粒子干燥器 6、干燥器排气处理系统 7 (包括细粉分离器 71、冷却器 72、汽水分离器 73及风机 74等）。 9 and FIG. 10 are schematic diagrams showing the structure of Embodiment 6. As can be seen from the figure, the particle with the embodiment 6 is dry. The wet sludge incineration treatment device comprises a circulating fluidized bed incinerator furnace 1, a high temperature gas solids separator, a tail flue 3, a hot ash distribution valve 4, a sludge dispersing device 5, a particle dryer 6, The dryer exhaust treatment system 7 (including the fine powder separator 71, the cooler 72, the steam separator 73, the fan 74, and the like).

在分离器料腿 21正下方设置一竖直分流板 402，其两侧分别为热灰分配阀第一进料室 403和第二进料室 405，两室上部相通，底面处于同一水平高度，分流板 402将分离器料腿 21在两室底面上的投影分成两个部分；第一进料室 403与第一出料室 404 底部通过第一水平孔 409相通，第一出料室 404上部通过第一溢流口 407与焚烧炉炉膛相通；第二进料室 405与第二出料室 406底部通过第二水平孔 410相通，第二出料室 406上部设有第二溢流口 408; 第一溢流口 407、第二溢流口 408底端处于同一水平高度；第一水平孔 409和第二水平孔 410顶端处于同一水平髙度；第一出料室 404、第一进料室 403、第二进料室 405、第二出料室 406底面均为带风帽的布风板，其下方分别对应风室，通入流量可调节的流化风。第一出料室 404与第二出料室 406之间有平衡风管 401相连。分流板 402顶端不低于第一水平孔 409顶端，且不高于第一溢流口 407底端；分流板 402将分离器料腿 21在第一进料室 403和第二进料室 405底面上的投影面积等分。 A vertical splitter plate 402 is disposed directly below the separator leg 21, and the two sides of the hot ash distributing valve are respectively a first feeding chamber 403 and a second feeding chamber 405. The upper portions of the two chambers are connected, and the bottom surface is at the same level. The splitter plate 402 divides the projection of the separator material leg 21 on the bottom surface of the two chambers into two parts; the first feed chamber 403 communicates with the bottom of the first discharge chamber 404 through the first horizontal hole 409, and the upper portion of the first discharge chamber 404 The first overflow chamber 405 communicates with the incinerator furnace; the second feed chamber 405 communicates with the bottom of the second discharge chamber 406 through the second horizontal hole 410, and the second discharge chamber 406 is provided with a second overflow port 408. The first overflow port 407 and the bottom end of the second overflow port 408 are at the same level; the first horizontal hole 409 and the top end of the second horizontal hole 410 are at the same horizontal degree; the first discharge chamber 404, the first feed The bottom surface of the chamber 403, the second feeding chamber 405 and the second discharging chamber 406 are all air hoods with hoods, and the lower portions respectively correspond to the air chambers, and the fluidized air with adjustable flow rate is introduced. A balance duct 401 is connected between the first discharge chamber 404 and the second discharge chamber 406. The top end of the splitter plate 402 is not lower than the top end of the first horizontal hole 409 and not higher than the bottom end of the first overflow port 407; the splitter plate 402 has the separator material leg 21 in the first feed chamber 403 and the second feed chamber 405 The projected area on the bottom surface is equally divided.

热灰分配阔 4的第二溢流口 408与粒子干燥器 6相通，粒子干燥器 6的具体结构为： The second overflow port 408 of the hot ash distribution width 4 is in communication with the particle dryer 6, and the specific structure of the particle dryer 6 is:

粒子干燥器 6内靠近热灰分配阀 4的第二溢流口 408处设有竖直的入口隔墙 605，将粒子干燥器 6内部分为入口室 601和换热室 602; 第二溢流口 408与入口室 601上部相通，入口室 601与换热室 602通过入口隔墙 605分隔，二者底部相通；入口室 601 和换热室 602底面均为带风帽的布风板，其下方分别对应风室，通入流量可以调节的流化气体。换热室 602的流化气体为惰性气体，流化速度为 1.5m/s。换热室 602顶部靠近入口室 601处设有湿污泥加入口 609，远离入口室 601处设有排气口 610。 A vertical inlet partition 605 is disposed in the particle dryer 6 near the second overflow port 408 of the hot ash distribution valve 4, and the interior of the particle dryer 6 is divided into an inlet chamber 601 and a heat exchange chamber 602; a second overflow The port 408 is in communication with the upper portion of the inlet chamber 601. The inlet chamber 601 and the heat exchange chamber 602 are separated by an inlet partition 605, and the bottom portions thereof communicate with each other; the bottom surfaces of the inlet chamber 601 and the heat exchange chamber 602 are hoods with hoods, respectively Corresponding to the plenum, a fluidizing gas with adjustable flow rate is introduced. The fluidizing gas of the heat exchange chamber 602 is an inert gas, and the fluidization speed is 1.5 m/s. The top of the heat exchange chamber 602 is provided with a wet sludge inlet port 609 near the inlet chamber 601 and an exhaust port 610 away from the inlet chamber 601.

粒子干燥器 6湿污泥加入口 609上方设有气力式污泥打散装置 5 , 打散后的污泥直接落入粒子干燥器 6内。 The particle dryer 6 is provided with a pneumatic sludge dispersing device 5 above the wet sludge inlet port 609, and the dispersed sludge directly falls into the particle dryer 6.

粒子干燥器 6内远离第二溢流口 408的一侧，设有与入口隔墙 605平行的出口隔墙 607，分隔出出口室 604，其底面为带风帽的布风板，下方对应风室，通入流量可以调节的流化气体；换热室 602与出口室 604通过出口隔墙 607分隔，二者上部相通，出口隔墙 607顶端与第二溢流口 408底端等高；出口室 604底面设有干污泥出口 611，通过第一螺旋给料机 613与焚烧炉炉膛 1相连，将经过干化的污泥和冷却后的循环灰一起经第一螺旋给料机 613送回焚烧炉炉膛 1。 The side of the particle dryer 6 remote from the second overflow opening 408 is provided with an outlet partition wall 607 parallel to the inlet partition wall 605, which separates the outlet chamber 604, the bottom surface of which is a hood with a hood, and the lower part corresponds to the air chamber. , a fluidizing gas with adjustable flow rate is introduced; the heat exchange chamber 602 and the outlet chamber 604 are separated by an outlet partition 607, and the upper portions are connected to each other. The top of the outlet partition 607 is equal to the bottom end of the second overflow opening 408; the bottom of the outlet chamber 604 is provided with a dry sludge outlet 611, which is connected to the incinerator furnace 1 through the first screw feeder 613, and will be dried. The mud and the cooled circulating ash are sent back to the incinerator furnace 1 via the first screw feeder 613.

粒子干燥器的排气口 610与干燥器排气处理系统 7相连，干燥器排气处理系统 7 的风机 74出口通过流化气体管路 741与粒子干燥器 6换热室 602底部风室相连。 The vent 610 of the particle dryer is connected to the dryer venting system 7, and the outlet of the fan 74 of the dryer venting system 7 is connected to the bottom plenum of the heat exchanger chamber 602 of the particle dryer 6 via a fluidizing gas line 741.

细粉分离器 71的细粉出口通过细粉返料器 711与焚烧炉炉膛 1相通，将从干燥器排气中分离出来的污泥细粉送回焚烧炉炉膛 1。 The fine powder outlet of the fine powder separator 71 is connected to the incinerator furnace 1 through the fine powder returner 711, and the sludge fine powder separated from the dryer exhaust gas is returned to the incinerator furnace 1 .

Claims

Rights request

A particle dryer, characterized by comprising:

a chamber for directly mixing the wet sludge with the hot ash in a fluidized state (600);

a wet sludge inlet port (609) for allowing wet sludge to enter the cavity (600);

a hot ash inlet (613) for introducing hot ash into the cavity (600);

An exhaust port (610) for exhausting gas in the cavity (600); and

The sludge for drying and the cooled hot ash are discharged from the dry sludge outlet (611) of the chamber (600). The particle dryer according to claim 1, wherein the cavity (600) is a bubbling fluidized bed having a fluidization rate of 0.3 to 0.8 m/s or 0.4 to 1.5 m/s. The bottom of the cavity is aired by a duct (630) or a windshield (620) with a hood (621).

A particle dryer according to claim 1, wherein said hot ash inlet (613) is located on a bottom wall or side wall of the cavity (600).

A particle dryer according to claim 1, wherein said wet sludge inlet port (609) is located on a side of the cavity (600) which is biased toward the hot ash inlet (613).

A particle dryer according to claim 3, wherein said dry sludge outlet (611) is provided in the middle of the side wall of the cavity (600) opposite to the hot ash inlet (613).

The particle dryer according to claim 1, wherein the lower portion of the cavity (600) is provided with a vertical outlet partition wall fixed to the bottom wall and the two side walls of the cavity (600) ( 607), the outlet partition (607) partitions the cavity (600) into an upper communicating outlet chamber (604) and a heat exchange chamber (602) with a hot ash inlet (613); the dry sludge outlet (611) is disposed at the bottom of the outlet chamber (604); a windshield of the hood is disposed on the bottom surface of the outlet chamber (604), and a wind chamber corresponding to the outlet chamber (604) is disposed under the air distribution panel, the wind Indoor flow rate adjustable fluidizing gas.

A particle dryer according to claim 5 or 6, wherein said exhaust port (610) is located on a side of the top cover of the cavity (600) which is biased toward the dry sludge outlet (611).

The particle dryer according to claim 1, wherein the cavity (600) is provided with a vertical inlet partition wall (605), and the interior thereof is divided into an entrance chamber communicating with the bottom (601). And a heat exchange chamber (602); a ventilation plate with a hood is disposed on the bottom surface of the inlet chamber (601), and a wind chamber corresponding to the inlet chamber (601) is disposed under the air distribution plate, and the flow rate in the air chamber is adjustable Fluidizing gas. 9. A wet sludge drying incineration treatment method, the method being used for drying incinerated wet sludge in a circulating fluidized bed incinerator or a circulating fluidized bed boiler, the method comprising: high temperature in a circulating fluidized bed a particle dryer according to any one of claims 1 to 8; a high-temperature circulating ash separated by a cyclone, a part directly returned to the furnace, and another part entering the particle dryer; the wet sludge is sent to the particle drying The device is directly mixed with the high-temperature circulating ash, heated, dried, and returned to the furnace together with the circulating ash for incineration.

The wet sludge drying incineration treatment method according to claim 9, wherein the wet sludge has a water content of 60 to 90%, and the wet sludge is dried in a particle dryer. After the dried sludge having a water content of 5 to 20%, it is returned to the furnace together with the circulating ash for incineration.

11. The method of treating wet sludge incineration according to claim 9, wherein the hot ash distribution valve adjusts the amount of enthalpy circulating ash entering the particle dryer, and controls the temperature of the particle dryer exhaust gas to 80~ 150 ° C.

12. The wet sludge drying incineration treatment method according to claim 9, wherein an inert bed material is added to the circulation loop to increase the total circulating ash amount to enhance the exhaust temperature of the hot ash distribution valve to the particle dryer. Adjustment ability.

13. A wet sludge incineration treatment device comprising:

a circulating fluidized bed incinerator furnace (1), a high temperature gas-solid separator (2) and a tail flue (3) connected to the upper portion; the particle dryer (6) according to claims 1-8;

The hot ash distribution return valve (4), the hot ash distribution return valve (4) is located below the high temperature gas-solid separator (2), the inlet is connected to the separator material leg (21), and the outlet and the particles are dried. The hot ash inlet (613) of the device (6) is connected;

The dry sludge outlet (611) of the particle dryer (6) is in communication with the furnace (1).

A wet sludge incineration treatment apparatus according to claim 13, wherein said hot ash distribution return valve (4) further comprises an outlet communicating with the incinerator furnace (1).

The wet sludge incineration treatment apparatus according to claim 13, wherein said wet sludge incineration treatment apparatus further comprises a dryer exhaust treatment system (7), said particle dryer (6) An exhaust port (610) is coupled to the dryer exhaust treatment system (7).

The wet sludge incineration treatment apparatus according to claim 15, wherein said dryer exhaust treatment system (7) comprises: - a fine powder separator (71) and a cooler (72) that are sequentially connected , a water separator (73) and a fan (74), wherein the fine powder outlet of the fine powder separator (71) passes through the fine powder returner (711) or the second screw feeder (712) and the incinerator furnace (1) Connected, the sludge fine powder separated from the dryer exhaust gas is sent back to the incinerator furnace (1). The wet sludge incineration treatment apparatus according to claim 13, wherein said wet sludge incineration treatment device further comprises a sludge dispersing device (5), and said sludge dispersing device (5) passes The wet sludge inlet (609) is connected to the particle dryer (6).

The wet sludge incineration treatment apparatus according to claim 14, wherein in said hot ash distribution return valve (4), a gas liquid solid separator leg (21) is disposed directly below a vertical splitter plate (402), on each side of the vertical splitter plate (402), respectively, a first hot feed ash distribution return valve first feed chamber (403), and a second feed chamber (405), hot ash The distribution return valve (4) is further provided with a first discharge chamber (404) and a second discharge chamber (406), and upper portions of the first discharge chamber (404) and the second discharge chamber (406) A first overflow port (407) and a second overflow port (408) are respectively disposed; the first feed chamber (403) communicates with the bottom of the first discharge chamber (404) through the first horizontal hole (409) The second feed chamber (405) communicates with the bottom of the second discharge chamber (406) through a second horizontal hole (410); the first discharge chamber (404> passes through the first overflow port (407) And communicating with the incinerator furnace (1), the second overflow port (408) is in communication with the hot ash inlet (613) of the particle dryer (6); the vertical splitter plate (402) The ratio of the area of the two portions of the projection of the separator material leg (21) on the bottom surface of the first feeding chamber (403) and the second feeding chamber (405) is 0.25 to 4.0; An air distribution plate with a hood is arranged on the bottom surface of the material chamber (404), the first feeding chamber (403), the second feeding chamber (405) and the second discharging chamber (406), and the air distribution plate is respectively arranged under the air distribution plate The first discharge chamber (404), the first feed chamber (403), the second feed chamber (405) and the second discharge chamber (406) corresponding to the wind chamber, the air chamber is adjustable in flow rate Fluidized wind.

The wet sludge incineration treatment apparatus according to claim 18, wherein in said hot ash distribution return valve (4), said first feed chamber (403) and said second feed The bottom surface of the chamber (405) is at the same level; the first overflow port (407> and the bottom end of the second overflow port (408) are at the same level; the first horizontal hole (409) and the second horizontal hole (410) The top is at the same level.

The wet sludge incineration processing apparatus according to claim 18, wherein in said hot ash distribution return valve (4), said vertical splitter (402) has a tip not lower than the first The top of the horizontal hole (409) is not higher than the bottom end of the first overflow port (407).

A wet sludge incineration treatment apparatus according to claim 18, wherein said particle dryer (6) is provided with a vertical inlet partition wall (605) located adjacent to the hot ash distribution return valve. At the second overflow (408) of (4), the interior of the particle dryer (6) is separated from the inlet chamber (601); the inlet chamber (601) and the heat exchange chamber (602) are passed through the inlet partition (605) Separating, the bottom of the two are connected; the bottom of the inlet chamber (601) is provided with a hood with a hood, and a wind chamber corresponding to the inlet chamber (601) is arranged below the air distribution plate, and the flow rate in the air chamber is adjustable. Fluidizing gas. The wet sludge incineration treatment apparatus according to claim 19, wherein said dry sludge outlet (611) is disposed on a side wall of the particle dryer (6) away from the hot ash inlet (613), The bottom end is equal to the bottom end of the second overflow port (408) and is connected to the incinerator furnace (1) through a dry sludge returner (612) to pass the dried sludge and the cooled circulating ash. Returned to the incinerator furnace (1) via a dry sludge returner (612).

A wet sludge incineration treatment apparatus according to claim 13, wherein said dry sludge outlet

(611) disposed at the bottom of the heat exchange chamber (602) of the particle dryer (6) away from the end of the hot ash inlet (613), and connected to the incinerator furnace (1) through the first screw feeder (613). The dried sludge and the cooled circulating ash are sent back to the incinerator furnace (1) via the first screw feeder (613).

The wet sludge incineration treatment apparatus according to claim 21, wherein an outlet partition wall parallel to the inlet partition wall (605) is disposed in the heat exchange chamber (602) of the particle dryer (6). (607), separating the outlet chamber (604); the outlet chamber (604) separated by the outlet partition wall (607) is in communication with the upper portion of the heat exchange chamber (602); and the bottom surface of the outlet chamber (604) is provided with a hood a wind deflecting plate, a wind chamber corresponding to the outlet chamber (604) is disposed under the air distribution plate, and a fluidizing gas with adjustable flow rate is introduced into the air chamber; the dry sludge outlet (611) is disposed at the outlet a bottom surface of the chamber (604); the dry sludge outlet (611) is connected to the incinerator furnace (1) through a first screw feeder (613), and the dried sludge is passed along with the cooled circulating ash. The first screw feeder (613) is returned to the incinerator furnace (1).

A wet sludge incineration treatment apparatus according to claim 24, wherein a top end of said outlet partition wall (607) is equidistant from a bottom end of said second overflow opening (408).

The wet sludge incineration treatment apparatus according to claim 16, wherein the outlet of the blower (74) of the dryer exhaust treatment system (7) passes through a fluidized gas line (741) and a particle dryer. (6) The heat exchange chamber (602) 'The bottom plenum is connected.

27. The wet sludge incineration treatment apparatus according to claim 16, wherein the outlet of the blower (74) of the dryer exhaust treatment system (7) passes through a branch line (742) and an incinerator furnace (1) ) Connected.

The wet sludge incineration treatment apparatus according to claim 16, characterized in that the fine powder returner (711) or the second screw feeder (712) of the dryer exhaust treatment system (7) The inlet is provided with an inert bed feed port (713).

A wet sludge incineration treatment apparatus with a particle dryer according to claim 13, wherein the fluidizing gas of said heat exchange chamber (602) is an inert gas or a cooled incinerator flue gas.