[go: up one dir, main page]

WO2011009321A1 - 能够处理带可燃物生料的水泥窑外预分解窑尾系统 - Google Patents

能够处理带可燃物生料的水泥窑外预分解窑尾系统 Download PDF

Info

Publication number
WO2011009321A1
WO2011009321A1 PCT/CN2010/072818 CN2010072818W WO2011009321A1 WO 2011009321 A1 WO2011009321 A1 WO 2011009321A1 CN 2010072818 W CN2010072818 W CN 2010072818W WO 2011009321 A1 WO2011009321 A1 WO 2011009321A1
Authority
WO
WIPO (PCT)
Prior art keywords
raw material
inlet
cyclone preheater
kiln
stage cyclone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2010/072818
Other languages
English (en)
French (fr)
Inventor
俞为民
陶从喜
彭学平
肖秋菊
陈昌华
李振华
刘继开
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianjin Cement Industry Design and Research Institute Co Ltd
Original Assignee
Tianjin Cement Industry Design and Research Institute Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tianjin Cement Industry Design and Research Institute Co Ltd filed Critical Tianjin Cement Industry Design and Research Institute Co Ltd
Publication of WO2011009321A1 publication Critical patent/WO2011009321A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/10—Arrangements for using waste heat
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/36—Manufacture of hydraulic cements in general
    • C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
    • C04B7/434—Preheating with addition of fuel, e.g. calcining
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories or equipment specially adapted for rotary-drum furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories or equipment specially adapted for rotary-drum furnaces
    • F27B7/2016—Arrangements of preheating devices for the charge
    • F27B7/2025—Arrangements of preheating devices for the charge consisting of a single string of cyclones
    • F27B7/2033—Arrangements of preheating devices for the charge consisting of a single string of cyclones with means for precalcining the raw material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories or equipment specially adapted for rotary-drum furnaces
    • F27B7/2016—Arrangements of preheating devices for the charge
    • F27B7/2041—Arrangements of preheating devices for the charge consisting of at least two strings of cyclones with two different admissions of raw material
    • F27B7/205—Arrangements of preheating devices for the charge consisting of at least two strings of cyclones with two different admissions of raw material with precalcining means on the string supplied with exhaust gases from the cooler
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/20—Arrangements for treatment or cleaning of waste gases

Definitions

  • a pre-decomposition kiln tail system capable of treating cement kiln with combustible raw materials
  • the invention relates to a system for raw material preheating, raw material decomposition and fuel combustion in the cement industry, in particular to a cement kiln precalciner kiln tail system capable of treating raw materials with combustible materials.
  • Cement clinker is produced by high temperature calcination of cement raw meal after preheating and decomposition.
  • the cement raw meal is mainly formed by homogenizing the calcareous raw material, the clay raw material and the correcting raw material by grinding.
  • the production process of cement clinker generally adopts pre-decomposition technology outside the kiln. This technology is also the most advanced cement production technology today. It is characterized by: a preheating system with pre-decomposition pre-decomposition, which is mainly composed of a decomposition furnace. Multi-stage cyclone preheater and connecting air duct and material pipe.
  • the pulverized coal is completely burned in the decomposition furnace, the raw material is fully decomposed in the decomposition furnace, and the high temperature gas of the decomposition furnace is subjected to multiple heat exchanges in the preheater system to reduce the temperature of the preheater system exhaust gas and improve the material into the furnace.
  • the purpose of the temperature is to improve the heat exchange efficiency of the kiln tail precalcining kiln tail system.
  • the combustible material enters the secondary or first-stage preheater inlet pipe of the preheater system, and gradually heats up and is combusted with combustibles.
  • the heat causes the primary or secondary or tertiary preheater of the system to adhere to the side wall of the equipment due to local overheating, which may cause the preheater cone or the tube to become clogged, resulting in production failure. Therefore, the current conventional kiln pre-decomposition technology is not suitable for the treatment of raw materials with high combustible content.
  • the raw materials required for the production of cement must meet certain requirements, especially for the raw materials used in the pre-decomposition technology of the kiln to limit the content of harmful components and combustibles.
  • Cement raw material with combustibles refers to cement raw materials. Because certain materials or materials contain a certain amount of combustibles, such as residual carbon, organic matter, etc., the burnt content of cement raw materials exceeds the standard (conventional pre-decomposition outside the kiln) 5% of cement raw meal is defined as cement raw material with combustibles; carbon residue will be used in the control of raw materials. Cement raw meal is defined as conventional cement raw meal when the loss on ignition does not exceed 0.5% or does not contain combustibles.
  • the present invention provides a water capable of treating raw materials with combustible materials in order to solve the technical problems existing in the prior art.
  • Pre-decomposition kiln tail system outside the mud kiln which is capable of handling cement raw materials with combustibles.
  • a cement kiln pre-decomposition kiln tail system capable of processing raw materials with combustible materials, including a feeding device and a multi-stage cyclone preheater a decomposing furnace, a tertiary air duct, a rotary kiln, the system further comprising a raw material pre-calcining furnace, wherein the upper part of the raw material pre-calcining furnace is provided with a gas stream outlet, a gas inlet at the bottom, and a material inlet at the bottom.
  • the airflow inlet is connected to an air outlet of the Nth cyclone preheater in the multi-stage cyclone preheater, and the strip airflow outlet is connected to an air inlet duct of the N-1th cyclone preheater,
  • the material inlet is connected to the discharge port of the N-2th cyclone preheater, and the feeding device is connected to the inlet pipe of the second stage cyclone preheater, wherein N represents a level of the cyclone preheater of a certain stage
  • the number N is any natural number greater than or equal to 4 and less than or equal to 6.
  • the feeding device is provided with a dispensing device.
  • the raw material pre-calcining furnace is connected to the tertiary air duct through a tertiary air dividing duct.
  • the raw material pre-calcining furnace comprises a column body, a lower shrinking portion is arranged below the column body, and a gas flow inlet is arranged below the lower shrinking portion, and a third air inlet and a material inlet are arranged on the side wall of the lower part of the raw material pre-calcining furnace
  • the upper portion of the upper cylinder is provided with a strip air outlet.
  • a cement kiln pre-decomposition kiln tail system capable of processing raw materials with combustible materials, including a feeding device and a multi-stage cyclone preheater a decomposing furnace, a tertiary air duct, and a rotary kiln, characterized in that the system further comprises a raw material pre-calcining furnace, the upper part of the raw material pre-calcining furnace is provided with a gas flow outlet, the bottom is provided with an air flow inlet, and the lower part is provided with a material inlet, the gas inlet is connected to an air outlet of the second stage cyclone preheater, and the strip air outlet is connected to an air inlet pipe of the first stage cyclone preheater, the material inlet and the feeding device connection.
  • the feeding device is provided with a dispensing device.
  • the raw material pre-calcining furnace is connected to the tertiary air duct through a tertiary air dividing duct.
  • a cement kiln pre-decomposition kiln tail system capable of processing raw materials with combustible materials, including a feeding device and a multi-stage cyclone preheater a decomposing furnace, a tertiary air duct, and a rotary kiln, characterized in that the system further comprises a raw material pre-calcining furnace, the upper part of the raw material pre-calcining furnace is provided with a gas flow outlet, the bottom is provided with an air flow inlet, and the lower part is provided with a material inlet, the gas inlet is connected to an air outlet of the third stage cyclone preheater, and the strip air outlet is connected to an air inlet pipe of the second stage cyclone preheater, the material inlet and the feeding device Or the discharge port of the first stage cyclone preheater is connected.
  • the feeding device is provided with a dispensing device.
  • the raw material pre-calcining furnace is connected to the tertiary air duct through a tertiary air dividing duct.
  • the invention has the advantages and positive effects that: by setting a raw material pre-calcining furnace between the multi-stage preheaters, the cement clinker with combustible cement raw material can be effectively utilized, fully taking into account the exothermic characteristics of combustible combustion. And the functional zone division of each part of the preheater system combined with pre-decomposition technology realizes a new breakthrough in the treatment of the calcined cement raw material calcined cement clinker with the new dry pre-decomposition kiln tail system, thereby effectively improving the system operation rate. , expanding unconventional low The use of grade raw material resources.
  • FIG. 1 is a schematic structural view of a single series cement kiln pre-decomposition kiln tail system to which the present invention is applied;
  • FIG. 2 is a schematic structural view of a double-series cement kiln pre-decomposition kiln tail system to which the present invention is applied;
  • Figure 3 is a schematic view showing the structure of the raw material pre-calcining furnace of Figure 1 or Figure 2.
  • the dotted line with the arrow is the direction of the airflow, and the solid line with the arrow is the flow direction;
  • the distribution device 2. The first stage cyclone preheater, 3. The second stage cyclone preheater, 4. The third stage Cyclone preheater, 5, raw material pre-calcining furnace, 6, gate valve, 7, fourth-stage cyclone preheater, 8, decomposition furnace, 9, fifth-stage cyclone preheater, 10, three winds and winds Pipe, 11, tertiary air duct, 12, kiln exhaust chamber, 13, rotary kiln, 14, air inlet, 15, lower shrinkage, 16, material inlet, 17, tertiary air inlet, 18, lower cylinder, 19 , the middle shrinkage section, 20, the upper cylinder, 21, the strip airflow outlet.
  • a single series cement kiln external precalcining kiln tail system applying the present invention includes a feeding device (not shown), a five-stage cyclone preheater, a decomposition furnace 8, and a tertiary air duct 11
  • the rotary kiln 13 the raw material pre-calcining furnace 5, the upper portion of the raw material pre-calcining furnace 5 is provided with a gas flow outlet 21, the bottom is provided with an air flow inlet 14, the lower portion is provided with a material inlet 16, the air flow inlet 14 and the fourth-level cyclone
  • the air outlet of the preheater 7 is connected, the air outlet of the strip is connected to the air inlet of the third stage cyclone preheater 4, and the material inlet is connected with the discharge port of the second stage cyclone preheater.
  • the feeding device is provided with a raw material dispensing device 1.
  • the raw material pre-calcining furnace 5 is connected to the tertiary air duct 11 through the tertiary air dividing duct 10.
  • a gate valve 6 is provided on the tertiary air distribution duct 10.
  • the multi-stage cyclone preheater is composed of a first-stage cyclone preheater 2, a second-stage cyclone preheater 3, a third-stage cyclone preheater 4, and a fourth-stage cyclone preheater 7,
  • the fifth stage cyclone preheater 8 constitutes a five-stage cyclone preheater.
  • the number of preheater stages may be six, four, three or two.
  • the decomposition furnace 8 may be of a squirt type, a pipe type, a swirl type, a fluidized type or a plurality of combinations.
  • the raw material pre-calcining furnace 5 is connected between the fourth-stage preheater and the third-stage preheater, but is not limited to the connection position, and the raw material pre-calcining furnace 5 can also be connected in the same manner.
  • the raw material precalciner can also be used in the same way Connected between the fifth stage cyclone preheater and the sixth stage cyclone preheater in the system.
  • the specific position of the raw material precalciner varies depending on factors such as the composition, content, and ignition temperature of the combustibles in the raw meal.
  • the pre-decomposition kiln tail system is based on the existing conventional dry pre-decomposition kiln tail system, and then a raw material pre-calcining furnace 5 is added, and the tertiary air portion is introduced into the raw material pre-calcining furnace. 5.
  • a raw material precalciner 5, a decomposition furnace 8 and a multistage cyclone preheater constitute a cement kiln precalciner kiln tail system capable of treating raw materials with combustible materials.
  • the feeding device of the pre-decomposition kiln tail system is provided with a material distributing device 1.
  • the invention adopts the prior art feeding device 1 to make the raw material feeding mode more flexible, and to process the cement raw material with combustible materials.
  • the raw material can be fed into the inlet duct of the second stage cyclone preheater 3, the four-stage preheater heat exchange is realized.
  • the second stage cyclone preheater 3 is connected in series to form a cyclone dust collection system for intensive dust collection of raw materials with combustibles.
  • the raw material When processing the conventional cement raw material, the raw material can be fed into the air inlet pipe of the first stage cyclone preheater 2, thereby realizing the heat exchange of the five-stage preheater, thereby reducing the exhaust gas temperature of the preheater system, thereby effectively reducing System heat consumption.
  • the raw material pre-calcining furnace 5 can supplement the introduction of the tertiary air to supplement the oxygen required for combustion of the combustibles, and control the flow of the tertiary air by adding a door valve 6 to the tertiary air dividing duct 10.
  • the raw pre-calciner can also be used without the need to supplement the tertiary air.
  • the pre-decomposition kiln tail system can effectively utilize the calcined cement clinker with combustible cement raw meal.
  • the pre-decomposition kiln tail system fully considers the exothermic characteristics of combustible combustion, and combines the functional zones of various parts of the preheater system with pre-decomposition technology to realize the new dry pre-decomposition kiln tail system to fully utilize the combustible content.
  • a new breakthrough in high raw material calcined cement clinker thereby effectively increasing the system operation rate and expanding the utilization of unconventional low-grade raw material resources.
  • the raw material pre-calcining furnace 5 is a combustible material burning device, including an upper column body 20 and a lower column body 18 connected through the intermediate neck portion 19. Or a cylinder having no central constriction, a lower constricted portion 15 is disposed under the cylinder, and an airflow inlet 14 communicating with the air outlet of the fourth-stage cyclone preheater 7 is disposed below the lower constricted portion 15
  • the lower side wall of the calciner 5 is provided with a tertiary air inlet 17 connected to the tertiary air distribution duct 10 and a material inlet 16 connected to the discharge opening of the second stage cyclone preheater 3, and the upper part of the upper cylinder 20 is disposed.
  • the raw meal enters the raw material pre-calcining furnace 5 from the material inlet 16 and is in contact with the incoming gas stream, and the temperature rapidly rises to the ignition point of most of the combustibles.
  • the inlet gas stream has a small amount of oxygen, which can cause the combustion of combustibles.
  • the tertiary air can be introduced from the tertiary air inlet 17, and the tertiary air is the kiln.
  • the high temperature gas extracted by the head cooler has an oxygen content close to that of air, about 21%.
  • a recirculation zone that is, a spurt effect, prolongs the solid-gas residence time ratio, which is beneficial to the complete combustion of the combustible in the pre-calciner.
  • the raw material pre-calciner has no central shrinkage, it is also possible to ensure complete combustion of the combustibles in the pre-calciner by appropriately increasing the volume of the raw material pre-calciner.
  • the completely burnt raw meal is discharged from the strip gas outlet 21 along with the gas stream, and enters the third stage cyclone preheater 4 for gas-solid separation.
  • the precalciner 5 serves the purpose of completely calcining the combustibles in the raw meal.
  • raw pre-calciner 5 is of the squirt type.
  • Raw material pre-calcining furnace 5 can also It will be apparent to those skilled in the art that a pipe type, a swirl type, a fluidized type or a plurality of combinations are used, and will not be described herein.
  • the cement raw material with combustible material is ground and homogenized and transported to the kiln tail by lifting equipment.
  • the material distributing device 1 can flexibly control the cement raw material with combustible materials to enter the position of the pre-decomposition kiln tail system.
  • the raw material is fed into the inlet air duct of the second-stage cyclone preheater 3 to realize the heat exchange of the four-stage preheater; when processing the conventional cement raw material, the raw material can be fed
  • the inlet air duct of the first stage cyclone preheater 2 realizes the heat exchange of the five-stage preheater.
  • the cement raw material with combustibles When processing cement raw materials with combustibles, the cement raw material with combustibles enters the inlet duct of the second stage cyclone preheater 3, is fully dispersed, and exchanges heat with the exhaust gas to achieve preheating and then dusting.
  • the airflow enters the second-stage cyclone preheater 3 for gas-solid separation, and the separated material is fed into the raw material pre-calcining furnace 5, and the separated airflow enters the first-stage cyclone preheater 2 to re-enforce separation and dust removal.
  • Raw material pre-calcining furnace 5 The internal gas temperature is between 700 °C and 900 °C, and the combustibles in the raw material are rapidly burned at this temperature.
  • the oxygen required for combustion is mainly supplied by the excess air in the exhaust gas of the fourth stage cyclone preheater 7, and can also be supplemented by introducing a portion of the tertiary air into the raw material precalciner 5 on the tertiary duct 11.
  • the tertiary air duct 10 of the raw material pre-calcining furnace is provided with a gate valve 6 to adjust the tertiary air flow into the raw material pre-calcining furnace to ensure complete combustion of the combustibles in the raw material pre-calcining furnace.
  • the third-stage cyclone preheater 4 After the combustibles in the raw material are completely burned in the raw material pre-calcining furnace, the third-stage cyclone preheater 4, the fourth-stage cyclone preheater 7, the decomposition furnace 8, and the fifth-stage cyclone preheater 9 are sequentially passed through. After the kiln exhaust chamber 12 is burned into the rotary kiln 13 to obtain cement clinker.
  • the raw material When processing the conventional cement raw meal, the raw material enters the inlet duct of the first stage cyclone preheater 2, which is similar to the conventional kiln tail precalcining kiln tail system working process, and the raw material passes through the first stage cyclone preheater. 2, the second stage cyclone preheater 3 performs gas-solid separation, and the separated material is fed into the raw material pre-calcining furnace 5, at which time the raw material pre-calcining furnace 5 only serves as a heat exchange function for connecting the air duct.
  • a cement kiln pre-decomposition kiln tail system capable of treating raw materials with combustible materials
  • the raw material pre-calcining furnace gas inlet is connected with the outlet of the second-stage cyclone preheater, and the raw material pre-calcining furnace has a gas outlet and
  • the inlet pipe of the first stage cyclone preheater is connected, and the material inlet of the raw material precalciner is connected with the feeding device.
  • a cement kiln pre-decomposition kiln tail system capable of treating raw materials with combustible materials
  • the raw material pre-calcining furnace gas inlet is connected with the outlet of the third-stage cyclone preheater, and the raw material pre-calcining furnace has a gas outlet and
  • the inlet duct of the second stage cyclone preheater is connected, and the feeding device is connected with the material inlet of the raw material precalciner or the inlet duct of the first stage cyclone preheater.
  • the feeding device When the feeding device is connected with the material inlet of the raw material pre-calcining furnace, the feeding device directly feeds the cement raw material with combustible materials into the raw material pre-calcining furnace, and the combustible material in the raw material is fully combusted and enters the second stage.
  • the cyclone preheater performs gas-solid separation.
  • the other structure is the same as that of the first embodiment, and the working principle is the same as the embodiment.
  • Feeding device and the first cyclone preheater When the air duct is connected, the cement raw material with combustible material is separated by the first-stage heat exchange and gas-solid separation, and the material of the first-stage cyclone preheater enters the raw material pre-calcining furnace, so that the combustible material in the raw material is fully combusted.
  • the other structure is the same as that of the first embodiment, and the working principle is the same as the embodiment.
  • the principle of the invention is that the cement raw material with combustibles enters the raw material pre-calcining furnace before the system may cause blockage, and the combustibles in the raw material are completely burned in the raw material pre-calcining furnace, thereby avoiding combustibles in the system. Other parts of the local combustion heat release caused by the blockage. At the same time, after the raw material with combustibles enters the system, the dust collection efficiency of the system may be drastically reduced.
  • the technical consideration of the present invention can be treated by means of a secondary preheater in series with dust collection.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Furnace Details (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Description

能够处理带可燃物生料的水泥窑外预分解窑尾系统 技术领域
本发明涉及一种水泥工业用于生料预热、 生料分解和燃料燃烧的系统， 特别涉及一 种能够处理带可燃物生料的水泥窑外预分解窑尾系统。 背景技术
水泥熟料是水泥生料在预热和分解后经高温煅烧而产生的。水泥生料主要由石灰质 原料、 粘土质原料以及校正原料经过粉磨均化形成。 当前水泥熟料的生产工艺普遍采用 窑外预分解技术， 这种技术也是当今最先进的水泥生产技术， 其特点是： 带有窑外预分 解的悬浮预热器系统， 它主要由分解炉、 多级旋风预热器及连接风管和料管等组成。 煤 粉在分解炉内完全燃烧， 生料在分解炉内充分分解， 出分解炉的高温气体在预热器系统 内经过多次热交换， 达到降低出预热器系统废气温度和提高物料入炉温度的目的， 从而 提高窑尾预分解窑尾系统的换热效率。现有水泥窑外预分解窑尾系统在处理可燃物含量 高的生料时， 可燃物进入预热器系统的二级或一级预热器进风管后， 逐步升温并伴随可 燃物燃烧放热，致使系统的一级或二级或三级预热器因局部过热而使物料粘附在设备边 壁， 会引起预热器锥部或者料管堵塞， 导致生产无法正常进行。 因此， 目前常规的窑外 预分解技术不适用于处理可燃物含量高的生料。
为满足水泥生产工艺， 目前生产水泥所需的原料是必须达到一定的要求， 特别是对 于窑外预分解技术所采用的原料要限制有害组分和可燃物的含量。
带可燃物的水泥生料是指水泥生料由于某种或几种原料中含有一定量的可燃物， 比 如残碳、 有机物等， 导致水泥生料的可燃物含量超标（常规的窑外预分解技术控制生料 中残炭烧失量不能超过 0. 5%) ， 在本文件中将残炭烧失量超过 0. 5%的水泥生料定义为 带可燃物的水泥生料;将残炭烧失量不超过 0. 5%或不含可燃物时水泥生料定义为常规水 泥生料。 由于可燃物能够在高温气流中氧化燃烧并释放热量， 故带可燃物的水泥生料不 能在常规的窑外预分解窑尾系统中得到正常使用。水泥原料选取时一般不采用带可燃物 的原料。 到目前为止， 国内外还没有专门针对带可燃物生料的规模化处理的技术方案。 然而， 随着社会发展和工业生产的推进， 资源紧缩的问题日益凸现， 开发利用非常规的 低品位原料生产水泥的需求越来越紧迫。 另外， 由于部分地区矿山资源中普遍含有可燃 物， 在这些地区建水泥厂就必须解决使用带可燃物水泥生料的问题， 开发可处理带可燃 物水泥生料的水泥生产新技术。 发明内容
本发明为解决公知技术中存在的技术问题而提供一种能够处理带可燃物生料的水 泥窑外预分解窑尾系统， 该系统能够处理带可燃物的水泥生料。
本发明为解决公知技术中存在的技术问题所采取的第一技术方案是： 一种能够处理 带可燃物生料的水泥窑外预分解窑尾系统， 包括进料装置、 多级旋风预热器、 分解炉、 三次风管道、 回转窑， 该系统还包括生料预煅烧炉， 所述生料预煅烧炉的上部设置有带 料气流出口、 底部设置有气流入口、 下部设置有物料入口， 所述气流入口与所述多级旋 风预热器中的第 N级旋风预热器的出风口连接，所述带料气流出口与第 N-1级旋风预热 器的进风管连接， 所述物料入口与第 N-2级旋风预热器的下料口连接， 所述进料装置与 第二级旋风预热器的进风管连接， 其中， N代表某一级旋风预热器的级数， N为大于等 于 4小于等于 6的任意一自然数。
所述进料装置设有分料装置。
所述生料预煅烧炉与所述三次风管道通过三次风分风管道连接。
所述生料预煅烧炉包括柱体， 柱体下方设置有下缩口部， 下缩口部下方设置有气流 入口， 该生料预煅烧炉下部的侧壁上设置有三次风入口和物料入口， 所述上柱体的上部 设置有带料气流出口。
本发明为解决公知技术中存在的技术问题所采取的第二技术方案是： 一种能够处理 带可燃物生料的水泥窑外预分解窑尾系统， 包括进料装置、 多级旋风预热器、 分解炉、 三次风管道、 回转窑， 其特征在于， 该系统还包括生料预煅烧炉， 所述生料预煅烧炉的 上部设置有带料气流出口、 底部设置有气流入口、 下部设置有物料入口， 所述气流入口 与第二级旋风预热器的出风口连接，所述带料气流出口与第一级旋风预热器的进风管连 接， 所述物料入口与所述进料装置连接。
所述进料装置设有分料装置。
所述生料预煅烧炉与所述三次风管道通过三次风分风管道连接。
本发明为解决公知技术中存在的技术问题所采取的第三技术方案是： 一种能够处理 带可燃物生料的水泥窑外预分解窑尾系统， 包括进料装置、 多级旋风预热器、 分解炉、 三次风管道、 回转窑， 其特征在于， 该系统还包括生料预煅烧炉， 所述生料预煅烧炉的 上部设置有带料气流出口、 底部设置有气流入口、 下部设置有物料入口， 所述气流入口 与第三级旋风预热器的出风口连接，所述带料气流出口与第二级旋风预热器的进风管连 接， 所述物料入口与所述进料装置或第一级旋风预热器的下料口连接。
所述进料装置设有分料装置。
所述生料预煅烧炉与所述三次风管道通过三次风分风管道连接。
本发明具有的优点和积极效果是：通过在多级预热器之间设置生料预煅烧炉，可有 效利用带可燃物水泥生料煅烧水泥熟料， 充分考虑到可燃物燃烧的放热特点， 并有机结 合预分解技术的预热器系统各部位的功能区划分， 实现了新型干法预分解窑尾系统处理 带可燃物水泥生料煅烧水泥熟料的新突破， 从而有效提高系统运转率， 扩大非常规的低 品位原料资源的利用。解决了常规预分解窑尾系统无法解决的生料中可燃物燃烧放热引 起系统堵塞的技术问题， 扩大了水泥生产可利用原料的范围， 促进了资源的合理利用， 实现含有可燃物的矿山大规模资源化利用， 节约优质矿山资源， 降低企业生产成本， 具 有很强的可操作性和实用性。 附图说明
图 1是应用本发明的单系列水泥窑外预分解窑尾系统结构示意图；
图 2是应用本发明的双系列水泥窑外预分解窑尾系统结构示意图；
图 3是图 1或图 2中生料预煅烧炉的结构示意图。
图中： 带箭头虚线为气流方向， 带箭头实线为料流方向； 1、 分料装置， 2、 第一级 旋风预热器， 3、 第二级旋风预热器， 4、 第三级旋风预热器， 5、 生料预煅烧炉， 6、 闸 板阀， 7、 第四级旋风预热器， 8、 分解炉， 9、 第五级旋风预热器， 10、 三次风分风管 道， 11、 三次风管道， 12、 窑尾烟室， 13、 回转窑， 14、 气流入口， 15、 下缩口部， 16、 物料入口， 17、 三次风入口， 18、 下柱体， 19、 中间缩口部， 20、 上柱体、 21、 带料气 流出口。 具体实施方式
为能进一步了解本发明的发明内容、 特点及功效， 兹例举以下实施例， 并配合附图 详细说明如下：
实施例 1 :
请参阅图 1和图 3， 应用本发明的单系列水泥窑外预分解窑尾系统， 包括进料装置 (图中未示出） 、 五级旋风预热器、 分解炉 8、 三次风管道 11、 回转窑 13、 生料预煅烧 炉 5， 生料预煅烧炉 5的上部设置有带料气流出口 21、底部设置有气流入口 14、下部设 置有物料入口 16， 气流入口 14与第四级旋风预热器 7的出风口连接， 带料气流出口与 第三级旋风预热器 4的进风管连接， 物料入口与第二级旋风预热器的下料口连接。 进料 装置设有生料分料装置 1。 生料预煅烧炉 5与三次风管道 11通过三次风分风管道 10连 接。 三次风分风管道 10上设置有闸门阀 6。
在本实施例中， 多级旋风预热器为由第一级旋风预热器 2、 第二级旋风预热器 3、 第三级旋风预热器 4、 第四级旋风预热器 7、 第五级旋风预热器 8组成五级旋风预热器。 但不限于此， 预热器级数还可以为六级、 四级、三级或者二级。分解炉 8可以为喷腾型、 管道型、 旋流型、 流态化型或多种组合型等型式。
在本实施例中， 生料预煅烧炉 5连接在第四级预热器与第三级预热器之间， 但不限 于此连接位置， 生料预煅烧炉 5也可采用相同的方式连接在该系统中第四级旋风预热器 和第五级旋风预热器之间； 在预热器级数为六级时， 生料预煅烧炉也可采用相同的方式 连接在系统中第五级旋风预热器和第六级旋风预热器之间。生料预煅烧炉的具体位置根 据生料中可燃物的成分、 含量、 起燃温度等因素不同而不同。
本发明的关键在于： 该预分解窑尾系统是在现有常规新型干法预分解窑尾系统的基 础上， 再增加一个生料预煅烧炉 5， 并将三次风部分引入生料预煅烧炉 5。 这样， 由生 料预煅烧炉 5、 分解炉 8和多级旋风预热器组成一种能够处理带可燃物生料的水泥窑外 预分解窑尾系统。 该预分解窑尾系统的进料装置设有分料装置 1， 本发明因采用了现有 技术中的分料装置 1， 使生料喂料方式较为灵活， 在处理带可燃物的水泥生料时， 生料 可喂入第二级旋风预热器 3的进口风管， 实现四级预热器换热。 最上面的第一级旋风预 热器 2、 第二级旋风预热器 3串联组成一个旋风收尘系统， 对带可燃物的生料进行强化 收尘。 在处理常规水泥生料时， 生料可喂入第一级旋风预热器 2的进风管， 实现五级预 热器换热， 从而能够降低出预热器系统的废气温度， 进而有效降低系统热耗。 生料预煅 烧炉 5可以补充引入三次风， 补充可燃物燃烧所需的氧气， 通过在三次风分风管道 10 上增加间门阀 6控制三次风的流量。 根据生料中可燃物的成分和含量等不同， 生料预煅 烧炉也可以不需补充引入三次风。采用该预分解窑尾系统可有效利用带可燃物水泥生料 煅烧水泥熟料。 该预分解窑尾系统充分考虑到可燃物燃烧的放热特点， 并有机结合预分 解技术的预热器系统各部位的功能区划分， 实现了新型干法预分解窑尾系统充分利用可 燃物含量高的生料煅烧水泥熟料的新突破， 从而有效提高系统运转率， 扩大非常规的低 品位原料资源的利用。
请参见图 3， 本实施例中的生料预煅烧炉 5， 生料预煅烧炉 5为一种可燃物燃烧装 置，包括通过中间缩口部 19连通的上柱体 20、下柱体 18，或者为没有中部缩口的柱体， 柱体下方设置有下缩口部 15， 下缩口部 15下方设置有与第四级旋风预热器 7的出风口 相通的气流入口 14， 生料预煅烧炉 5下部的侧壁上设置有与三次风分风管道 10连接的 三次风入口 17和与第二级旋风预热器 3的下料口连接的物料入口 16，上柱体 20的上部 设置有与第三级旋风预热器 4的进风管连接的带料气流出口 21。
上述生料预煅烧炉 5的工作原理：
生料从物料入口 16进入生料预煅烧炉 5， 与入炉气流接触换热，温度迅速上升至大 部分可燃物的燃点。 入炉气流中带有少量的含氧量， 能够引起可燃物的燃烧， 当入炉气 流中氧含量不足以保证可燃物完成燃烧时， 可以从三次风入口 17导入三次风， 三次风 为从窑头冷却机抽取的高温气体， 其含氧量与空气接近， 约 21 %。气流通过中部缩口部 19时出现回流区， 即喷腾效应， 延长了固气停留时间比， 有利于可燃物在预煅烧炉内完 全燃烧。 如果生料预煅烧炉没有中部缩口， 也可以通过适当增加生料预煅烧炉的容积， 来保证可燃物在预煅烧炉内完全燃烧。 燃烧完全的生料随气流一起从带料气流出口 21 排出， 进入第三级旋风预热器 4进行气固分离。 预煅烧炉 5起到完全煅烧生料中可燃物 的目的。
如本领域的技术人员所知的， 上述生料预煅烧炉 5为喷腾型。 生料预煅烧炉 5还可 以采用管道型、 旋流型、 流态化型或多种组合型等型式， 对本领域的技术人员来讲， 是 显而易见的， 在此不再累述。
本实施例的工作原理：
带可燃物的水泥生料经过粉磨、 均化后通过提升设备输送至窑尾， 分料装置 1可以 灵活控制带可燃物的水泥生料进入该预分解窑尾系统的位置。在处理带可燃物的水泥生 料时， 生料喂入第二级旋风预热器 3的进口风管， 实现四级预热器换热； 在处理常规水 泥生料时， 生料可喂入第一级旋风预热器 2的进口风管， 实现五级预热器换热。
在处理带可燃物的水泥生料时， 带可燃物的水泥生料进入第二级旋风预热器 3的进 口风管后经过充分分散， 并与废气进行热交换实现预热升温， 然后含尘气流进入第二级 旋风预热器 3进行气固分离， 分离出的物料喂入生料预煅烧炉 5， 分离后的气流进入第 一级旋风预热器 2进行再次强化分离除尘。 生料预煅烧炉 5 内气流温度在 700°C〜900 °C之间， 生料中的可燃物在该温度下迅速燃烧。 燃烧所需的氧气主要由出第四级旋风预 热器 7的废气中过剩空气提供， 同时也可以通过在三次风管 11上引一部分三次风进入 生料预煅烧炉 5作为补充。 入生料预煅烧炉的三次风管道 10上设有闸板阀 6可调节入 生料预煅烧炉的三次风流量， 以确保可燃物在生料预煅烧炉内的完全燃烧。 生料中的可 燃物在生料预煅烧炉内完全燃烧后， 依次经过第三级旋风预热器 4， 第四级旋风预热器 7， 分解炉 8、 第五级旋风预热器 9， 窑尾烟室 12后进入回转窑 13煅烧制得水泥熟料。
在处理常规水泥生料时， 生料进入第一级旋风预热器 2的进口风管， 此时与常规的 窑尾预分解窑尾系统工作过程类似， 生料经过第一级旋风预热器 2， 第二级旋风预热器 3进行气固分离， 分离出的物料喂入生料预煅烧炉 5， 此时生料预煅烧炉 5只是起到一 个连接风管的换热作用。
实施例 2:
一种能够处理带可燃物生料的水泥窑外预分解窑尾系统， 生料预煅烧炉气流入口与 第二级旋风预热器的出风口连接， 生料预煅烧炉的带料气流出口与第一级旋风预热器的 进风管连接，生料预煅烧炉的物料入口与进料装置连接。在处理带可燃物的水泥生料时， 生料直接喂入生料预煅烧炉， 与来自第二级旋风预热器的气流换热， 生料中的可燃物充 分燃烧后，进入第一级旋风预热器，之后采用与常规窑尾系统相同的结构处理水泥生料。 其他结构与实施例 1相同， 工作原理与实施例亦相同。
实施例 3:
一种能够处理带可燃物生料的水泥窑外预分解窑尾系统， 生料预煅烧炉气流入口与 第三级旋风预热器的出风口连接， 生料预煅烧炉的带料气流出口与第二级旋风预热器的 进风管连接， 进料装置与生料预煅烧炉的物料入口或第一级旋风预热器的进风管连接。 进料装置与生料预煅烧炉的物料入口连接时，进料装置将带可燃物的水泥生料直接送到 生料预煅烧炉中，生料中的可燃物充分燃烧后，进入第二级旋风预热器，进行气固分离， 其他结构与实施例 1相同， 工作原理与实施例亦相同。 进料装置与第一旋风预热器的进 风管连接时， 带可燃物的水泥生料经一级换热及气固分离后， 出第一级旋风预热器的物 料进入生料预煅烧炉， 使生料中的可燃物充分燃烧。 其他结构与实施例 1相同， 工作原 理与实施例亦相同。
请参见图 2， 应用本发明的双系列水泥窑尾预分解窑尾系统， 在此不再累述。
本发明的原理是，带可燃物的水泥生料在系统可能造成堵塞之前进入生料预煅烧炉， 生料中的可燃物在生料预煅烧炉内完全燃烧，从而避免可燃物在该系统的其它部位局部 燃烧放热造成堵塞之危害。 同时， 带可燃物的生料进入该系统后， 可能出现系统的收尘 效率急剧降低， 本发明在技术上考虑可以采用二级预热器串联收尘的方式进行处理。
尽管上面结合附图对本发明的优选实施例进行了描述，但是本发明并不局限于上述 的具体实施方式， 上述的具体实施方式仅仅是示意性的， 并不是限制性的， 本领域的普 通技术人员在本发明的启示下， 在不脱离本发明宗旨和权利要求所保护的范围情况下， 还可以作出很多形式， 这些均属于本发明的保护范围之内。

Claims

权利要求书
1. 一种能够处理带可燃物生料的水泥窑外预分解窑尾系统， 包括进料装置、 多级 旋风预热器、分解炉、三次风管道、 回转窑， 其特征在于， 该系统还包括生料预煅烧炉， 所述生料预煅烧炉的上部设置有带料气流出口、 底部设置有气流入口、 下部设置有物料 入口，所述气流入口与所述多级旋风预热器中的第 N级旋风预热器的出风口连接，所述 带料气流出口与第 N-1级旋风预热器的进风管连接，所述物料入口与第 N-2级旋风预热 器的下料口连接， 所述进料装置与第二级旋风预热器的进风管连接， 其中， N代表某一 级旋风预热器的级数， N为大于等于 4小于等于 6的任意一自然数。
2. 根据权利要求 1所述的能够处理带可燃物生料的水泥窑外预分解窑尾系统， 其 特征在于： 所述进料装置设有分料装置。
3. 根据权利要求 1或 2所述的能够处理带可燃物生料的水泥窑外预分解窑尾系统， 其特征在于： 所述生料预煅烧炉与所述三次风管道通过三次风分风管道连接。
4. 根据权利要求 1所述的能够处理带可燃物生料的水泥窑外预分解窑尾系统， 其特 征在于： 所述生料预煅烧炉包括柱体， 所述柱体下方设置有下缩口部， 下缩口部下方设 置有气流入口， 该生料预煅烧炉下部的侧壁上设置有三次风入口和物料入口， 所述上柱 体的上部设置有带料气流出口。
5. 一种能够处理带可燃物生料的水泥窑外预分解窑尾系统， 包括进料装置、 多级 旋风预热器、分解炉、三次风管道、 回转窑， 其特征在于， 该系统还包括生料预煅烧炉， 所述生料预煅烧炉的上部设置有带料气流出口、 底部设置有气流入口、 下部设置有物料 入口， 所述气流入口与第二级旋风预热器的出风口连接， 所述带料气流出口与第一级旋 风预热器的进风管连接， 所述物料入口与所述进料装置连接。
6. 根据权利要求 5所述的能够处理带可燃物生料的水泥窑外预分解窑尾系统， 其 特征在于： 所述进料装置设有分料装置。
7. 根据权利要求 5或 6所述的能够处理带可燃物生料的水泥窑外预分解窑尾系统， 其特征在于： 所述生料预煅烧炉与所述三次风管道通过三次风分风管道连接。
8. 一种能够处理带可燃物生料的水泥窑外预分解窑尾系统， 包括进料装置、 多级 旋风预热器、分解炉、三次风管道、 回转窑， 其特征在于， 该系统还包括生料预煅烧炉， 所述生料预煅烧炉的上部设置有带料气流出口、 底部设置有气流入口、 下部设置有物料 入口， 所述气流入口与第三级旋风预热器的出风口连接， 所述带料气流出口与第二级旋 风预热器的进风管连接，所述物料入口与所述进料装置或第一级旋风预热器的下料口连 接。
9. 根据权利要求 8所述的能够处理带可燃物生料的水泥窑外预分解窑尾系统， 其 特征在于： 所述进料装置设有分料装置。
10.根据权利要求 8或 9所述的能够处理带可燃物生料的水泥窑外预分解窑尾系统， 其特征在于： 所述生料预煅烧炉与所述三次风管道通过三次风分风管道连接。
PCT/CN2010/072818 2009-07-24 2010-05-15 能够处理带可燃物生料的水泥窑外预分解窑尾系统 Ceased WO2011009321A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200910304794XA CN101608866B (zh) 2009-07-24 2009-07-24 能够处理带可燃物生料的水泥窑外预分解窑尾系统
CN200910304794.X 2009-07-24

Publications (1)

Publication Number Publication Date
WO2011009321A1 true WO2011009321A1 (zh) 2011-01-27

Family

ID=41482704

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2010/072818 Ceased WO2011009321A1 (zh) 2009-07-24 2010-05-15 能够处理带可燃物生料的水泥窑外预分解窑尾系统

Country Status (2)

Country Link
CN (1) CN101608866B (zh)
WO (1) WO2011009321A1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108772405A (zh) * 2018-06-25 2018-11-09 安徽海螺集团有限责任公司 一种水泥窑烟气引入ccus系统的连接结构
CN115560332A (zh) * 2022-09-21 2023-01-03 华润水泥技术研发（广西）有限公司 一种利用水泥窑处置替代燃料的装置
CN116293719A (zh) * 2022-12-08 2023-06-23 宁夏嘉农环保科技有限公司 一种污泥处置用新型干法窑处理系统

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101608866B (zh) * 2009-07-24 2010-08-25 天津水泥工业设计研究院有限公司 能够处理带可燃物生料的水泥窑外预分解窑尾系统
TWI457520B (zh) * 2012-09-19 2014-10-21 Ind Tech Res Inst 迴流懸浮式煅燒爐系統及其使用方法
CN103342371A (zh) * 2013-07-05 2013-10-09 天津水泥工业设计研究院有限公司 一种煅烧黑滑石增白的工艺及装置
TWI516302B (zh) 2013-12-11 2016-01-11 財團法人工業技術研究院 循環塔二氧化碳捕獲系統、碳酸化爐、煅燒爐及其使用方法
CN105299625B (zh) * 2015-11-23 2017-10-13 北京凯盛建材工程有限公司 一种降低ddf分解炉氮氧化物排放量的节能减排改造方法
CN106830718A (zh) * 2016-12-09 2017-06-13 芜湖新兴铸管有限责任公司 用于回转窑预热器的分料装置
CN109485225A (zh) * 2018-10-24 2019-03-19 四川双马宜宾水泥制造有限公司 一种水泥厂处理生活污泥的方法
CN109896760A (zh) * 2019-04-04 2019-06-18 南京凯盛国际工程有限公司 一种利用水泥窑尾煅烧石灰的装置及工艺
CN112654828B (zh) * 2019-08-12 2022-07-22 天津水泥工业设计研究院有限公司 一种水泥预分解窑系统及制备水泥熟料的方法
CN112393596B (zh) * 2019-08-12 2025-02-21 天津水泥工业设计研究院有限公司 由在线型分解炉改造的水泥窑系统及制备水泥熟料的方法
WO2021026713A1 (zh) * 2019-08-12 2021-02-18 天津水泥工业设计研究院有限公司 由在线型分解炉改造的可调节co2富集量水泥窑系统及其使用方法
IL297010B2 (en) * 2020-05-05 2025-10-01 Thyssenkrupp Ind Solutions Ag Cement production plant and cement clinker production process
WO2022099532A1 (zh) * 2020-11-12 2022-05-19 天津水泥工业设计研究院有限公司 一种水泥窑系统及制备水泥熟料的方法
CN112500001B (zh) * 2020-12-16 2022-07-05 天津水泥工业设计研究院有限公司 一种低能耗碳富集水泥生产系统及生产水泥熟料的方法
CN113149482A (zh) * 2021-05-25 2021-07-23 中国华能集团清洁能源技术研究院有限公司 一种在回转窑中处置废弃风机叶片的系统及其工作方法
CN113121135A (zh) * 2021-05-25 2021-07-16 中国华能集团清洁能源技术研究院有限公司 一种在回转窑中资源化利用废旧叶片的系统及其工作方法
CN115468420B (zh) * 2022-09-19 2025-05-13 天津水泥工业设计研究院有限公司 一种具有三次风带料的梯度燃烧深度自脱硝分解炉系统及工艺

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1146546A (zh) * 1996-07-15 1997-04-02 中国建筑材料科学研究院 用于水泥窑余热发电工艺的窑外分解技术
CN2551950Y (zh) * 2002-07-05 2003-05-21 孙占元 新型窑外预热分解设备
US20030143508A1 (en) * 2002-01-25 2003-07-31 Hubert Ramesohl System for manufacturing cement clinker
CN201032355Y (zh) * 2007-05-21 2008-03-05 南京凯盛水泥技术工程有限公司 水泥窑外预分解窑尾系统
CN101182142A (zh) * 2007-12-03 2008-05-21 天津水泥工业设计研究院有限公司 一种电石渣全部替代石灰石煅烧水泥的方法
CN101608866A (zh) * 2009-07-24 2009-12-23 天津水泥工业设计研究院有限公司 能够处理带可燃物生料的水泥窑外预分解窑尾系统

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1146546A (zh) * 1996-07-15 1997-04-02 中国建筑材料科学研究院 用于水泥窑余热发电工艺的窑外分解技术
US20030143508A1 (en) * 2002-01-25 2003-07-31 Hubert Ramesohl System for manufacturing cement clinker
CN2551950Y (zh) * 2002-07-05 2003-05-21 孙占元 新型窑外预热分解设备
CN201032355Y (zh) * 2007-05-21 2008-03-05 南京凯盛水泥技术工程有限公司 水泥窑外预分解窑尾系统
CN101182142A (zh) * 2007-12-03 2008-05-21 天津水泥工业设计研究院有限公司 一种电石渣全部替代石灰石煅烧水泥的方法
CN101608866A (zh) * 2009-07-24 2009-12-23 天津水泥工业设计研究院有限公司 能够处理带可燃物生料的水泥窑外预分解窑尾系统

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108772405A (zh) * 2018-06-25 2018-11-09 安徽海螺集团有限责任公司 一种水泥窑烟气引入ccus系统的连接结构
CN115560332A (zh) * 2022-09-21 2023-01-03 华润水泥技术研发（广西）有限公司 一种利用水泥窑处置替代燃料的装置
CN116293719A (zh) * 2022-12-08 2023-06-23 宁夏嘉农环保科技有限公司 一种污泥处置用新型干法窑处理系统

Also Published As

Publication number Publication date
CN101608866B (zh) 2010-08-25
CN101608866A (zh) 2009-12-23

Similar Documents

Publication Publication Date Title
WO2011009321A1 (zh) 能够处理带可燃物生料的水泥窑外预分解窑尾系统
CN112654828B (zh) 一种水泥预分解窑系统及制备水泥熟料的方法
CN101792276B (zh) 适合分离捕集co2的部分全氧型水泥生产方法
CN102219410B (zh) 一种悬浮态外循环式高固气比分解反应器
CN112321183A (zh) 实现二氧化碳零排放的水泥窑系统及水泥熟料制备方法
CN103864325B (zh) 一种悬浮态煅烧煤矸石的生产系统
WO2020182012A1 (zh) 多级悬浮预热水泥窑炉系统及其控制方法
CN111977995A (zh) 基于新型干法水泥熟料烧成系统的粉石灰煅烧改造系统
CN101475324A (zh) 电石渣干烧制水泥熟料的工艺方法
CN115159876A (zh) 一种低能耗碳捕集水泥熟料生产系统及制备水泥熟料方法
CN217127294U (zh) 一种电石渣悬浮煅烧系统
CN105236772B (zh) 一种竖窑‑间壁回转窑联合装置
CN102992661A (zh) 一种梁式蓄热石灰窑
CN201497351U (zh) 水泥窑外预分解窑尾系统
CN212669567U (zh) 基于新型干法水泥熟料烧成系统的粉石灰煅烧改造系统
CN102674724A (zh) 一种两级分解物料预烧水泥熟料煅烧系统及其工艺
CN201297860Y (zh) 一种电石渣全部替代石灰石煅烧水泥的装置
CN211445544U (zh) 一种水泥窑运用外燃式回转窑捕集纯化co2和减排系统
CN115259102B (zh) 一种烟气分流制二氧化硫浓烟气和硅酸盐熟料的工艺和设备
CN103588399A (zh) 水泥预分解窑
CN116535117A (zh) 一种可实现解耦功能的偏高岭土制备系统及制备方法
CN114772559A (zh) 一种磷石膏制备硫酸联产水泥的分离式双系统和生产方法
CN110885064B (zh) 一种硫酸钙生产水泥熟料和硫酸的系统及其方法
CN114956610A (zh) 一种电石渣悬浮煅烧系统
CN1554609A (zh) 水泥熟料煅烧循环预烧工艺及装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10801881

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 99/MUMNP/2012

Country of ref document: IN

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC 8EPO FORM 1205A DATED 25-06-2011 )

122 Ep: pct application non-entry in european phase

Ref document number: 10801881

Country of ref document: EP

Kind code of ref document: A1