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CN201000057Y - A small pulverized coal combustion boiler unit - Google Patents

A small pulverized coal combustion boiler unit Download PDF

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Publication number
CN201000057Y
CN201000057Y CNU2007201031500U CN200720103150U CN201000057Y CN 201000057 Y CN201000057 Y CN 201000057Y CN U2007201031500 U CNU2007201031500 U CN U2007201031500U CN 200720103150 U CN200720103150 U CN 200720103150U CN 201000057 Y CN201000057 Y CN 201000057Y
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China
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coal
pulverized coal
combustion
bin
flue gas
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张宗旺
杨芳
王民发
王欢
王玥
贾德威
白春华
周建香
董文杰
高胜利
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University of Science and Technology Beijing USTB
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University of Science and Technology Beijing USTB
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Abstract

一种小型煤粉燃烧锅炉机组，属于能源利用领域。本锅炉机组主要由煤粉制备系统、煤粉喷吹及燃烧系统、锅炉主机、烟气后处理系统、自动控制与调节系统组成煤粉喷吹及燃烧系统包括一次风机(3)、二次风风机(2)、煤粉储仓(19)、中间粉仓(12)、供粉装置(7)、燃烧器(24)、燃气罐(1)及管路和阀门，煤粉在安装于锅炉一端的燃烧器预燃室预燃后，喷入锅炉炉胆内继续燃烧。废烟气通过管道进入烟气后处理系统；烟气后处理系统包括布袋除尘器(27)、脱硫器(26)、引风机(25)、烟囱，净化后的烟气经由烟囱排入大气。本实用新型可实现煤粉燃烧锅炉的小型化，可用于为工业或民用提供蒸汽和热水的场合。可有效控制大气污染物的排放，使该锅炉机组实现节能、低污染。

A small pulverized coal combustion boiler unit belongs to the field of energy utilization. The boiler unit is mainly composed of pulverized coal preparation system, pulverized coal injection and combustion system, boiler main engine, flue gas post-processing system, automatic control and adjustment system. The pulverized coal injection and combustion system includes primary fan (3), secondary air Fan (2), pulverized coal storage bin (19), intermediate powder bin (12), powder supply device (7), burner (24), gas tank (1) and pipelines and valves, pulverized coal is installed in the boiler After pre-combustion in the pre-combustion chamber of the burner at one end, it is sprayed into the boiler furnace to continue burning. Waste flue gas enters the flue gas post-treatment system through the pipeline; the flue gas post-treatment system includes a bag filter (27), a desulfurizer (26), an induced draft fan (25), and a chimney, and the purified flue gas is discharged into the atmosphere through the chimney. The utility model can realize the miniaturization of the pulverized coal combustion boiler, and can be used in occasions of providing steam and hot water for industry or civil use. It can effectively control the emission of air pollutants, so that the boiler unit can achieve energy saving and low pollution.

Description

一种小型煤粉燃烧锅炉机组A small pulverized coal combustion boiler unit

技术领域：Technical field:

本发明属于能源利用领域，特别涉及一种小型煤粉燃烧锅炉机组。The invention belongs to the field of energy utilization, in particular to a small pulverized coal combustion boiler unit.

背景技术：Background technique:

传统的小型燃煤工业锅炉多为火床燃烧方式，燃烧热损失和污染物排放难以有效控制。随着环保力度的加大，国内各地纷纷推出高于国家标准的锅炉大气污染物地方标准，使传统的燃煤锅炉更加难以达到要求，以至于不少大中城市都颁布法令，禁止在市区使用燃煤锅炉。由于油、气价格不断上涨，燃油燃气锅炉的运行成本日趋增高，广泛使用在经济上和资源条件上受到限制。而煤炭在我国蕴藏量丰富，且价格便宜，因此，应用煤的洁净燃烧技术，研制能够达到或接近燃油、燃气锅炉的节能、环保指标的新型高效的小型锅炉就具有相当的必要性。煤粉燃烧在国内外电站锅炉上应用广泛，技术成熟，煤粉洁净燃烧的优势和新型高效的除尘、脱离技术的日渐成熟，使得煤粉燃烧在节能、环保方面具有了无论是已有的火床燃烧方式或燃油燃气方式都无法比拟的综合优势，而传统上，煤粉燃烧方式只适用于大型的电站锅炉。Traditional small coal-fired industrial boilers are mostly fire-bed combustion, and it is difficult to effectively control combustion heat loss and pollutant emissions. With the increase of environmental protection efforts, local standards for boiler air pollutants that are higher than national standards have been introduced in various parts of the country, making it more difficult for traditional coal-fired boilers to meet the requirements, so that many large and medium-sized cities have promulgated laws to prohibit Use a coal-fired boiler. Due to the rising prices of oil and gas, the operating cost of oil-fired gas-fired boilers is increasing day by day, and the wide use of them is limited in terms of economy and resource conditions. However, coal reserves are abundant in our country and the price is cheap. Therefore, it is quite necessary to develop a new type of high-efficiency small boiler that can reach or approach the energy-saving and environmental protection indicators of oil-fired and gas-fired boilers by using clean coal combustion technology. Pulverized coal combustion is widely used in power plant boilers at home and abroad, and the technology is mature. The advantages of clean pulverized coal combustion and the new and efficient dust removal and detachment technology are becoming more and more mature, which makes pulverized coal combustion have advantages in terms of energy saving and environmental protection. The comprehensive advantages that cannot be compared with bed combustion method or oil gas method, while traditionally, pulverized coal combustion method is only suitable for large-scale power plant boilers.

发明内容：Invention content:

本发明的设计目的是研发一种将煤粉燃烧技术应用于小型工业锅炉的、高效低污染的、控制和调节水平较高的、全新的小型锅炉机组。The design purpose of the present invention is to develop a new small boiler unit with high efficiency and low pollution, high control and regulation level, which applies pulverized coal combustion technology to small industrial boilers.

一种小型煤粉燃烧锅炉机组，主要由煤粉制备系统、煤粉喷吹及燃烧系统、锅炉主机、烟气后处理系统、自动控制与调节系统组成，其特征是煤粉燃烧锅炉机组包括燃气罐1、助燃风机2、空压机3、储气罐4、压缩空气放散管路5、输送煤粉用压缩空气管6、给煤器7、.调节给煤量用压缩空气管8、煤粉运送汽车9、给煤开关阀10、中间粉仓流化用气管11、中间粉仓12、称重压力传感器13、钟形阀14、蝶阀15、煤粉仓流化气管16、脉冲反吹压缩空气管17、煤粉输送管路18、煤粉仓19、收粉布袋20、燃烧器供煤管21、一次助燃风22、二次助燃风23、煤粉燃烧器24、废烟气引风机25、脱硫器26、烟气除尘布袋27、废烟气换热器28、锅炉本体29。煤粉运送汽车9通过煤粉输送管路18连接煤粉仓19，煤粉仓19通过钟形阀14、蝶阀15连接中间粉仓12，中间粉仓12装有称重压力传感器13。收粉布袋20设在煤粉仓19的上方。空压机3连接储气罐4，储气罐4设有压缩空气放散管路5，排放多余的压缩空气。来自储气罐4的压缩空气通过脉冲反吹压缩空气管17反吹收粉布袋20。煤粉仓19和中间仓12的圆锥体下部分别接有流化用气管16和流化用气管11与储气罐4相连，用压缩空气松动煤粉层。在煤粉仓19和中间仓12之间通有散气管路，用于压缩气体的排放。中间仓12下部连接给煤开关阀10，给煤开关阀10和储气罐4连接给煤器7，给煤器7通过燃烧器供煤管21连接煤粉燃烧器24，为煤粉燃烧器24提供煤粉、空气混合物。在给煤开关阀10装有调节给煤量用压缩空气管8，通过调节给煤量用压缩空气管8中的压缩空气，可以调节给煤量。燃气罐1为煤粉燃烧器24提供燃气，助燃风机2通过管路给煤粉燃烧器24提供一次助燃风22、二次助燃风23。煤粉燃烧器24设在锅炉本体29的前边，废烟气换热器28设在锅炉本体29的后边，通过管路连接烟气除尘布袋27、脱硫器26、废烟气引风机25。从锅炉本体29出来的废烟气经烟气除尘布袋27、脱硫器26、废烟气引风机25排出。A small pulverized coal combustion boiler unit is mainly composed of a pulverized coal preparation system, a pulverized coal injection and combustion system, a boiler host, a flue gas post-processing system, and an automatic control and adjustment system. It is characterized in that the pulverized coal combustion boiler unit includes a gas Tank 1, combustion-supporting fan 2, air compressor 3, gas storage tank 4, compressed air release pipeline 5, compressed air pipe for conveying pulverized coal 6, coal feeder 7, compressed air pipe for adjusting coal supply 8, coal Powder transport vehicle 9, coal feeding switch valve 10, intermediate powder silo fluidization air pipe 11, intermediate powder silo 12, weighing pressure sensor 13, bell valve 14, butterfly valve 15, coal powder silo fluidization air pipe 16, pulse blowback Compressed air pipe 17, pulverized coal conveying pipeline 18, pulverized coal bin 19, powder collection cloth bag 20, coal supply pipe for burner 21, primary combustion air 22, secondary combustion air 23, pulverized coal burner 24, waste flue gas guide Fan 25, desulfurizer 26, flue gas dust removal bag 27, waste flue gas heat exchanger 28, boiler body 29. The pulverized coal transport vehicle 9 is connected to the pulverized coal bin 19 through the pulverized coal delivery pipeline 18, and the pulverized coal bin 19 is connected to the intermediate powder bin 12 through the bell valve 14 and the butterfly valve 15, and the intermediate powder bin 12 is equipped with a weighing pressure sensor 13. The powder collecting cloth bag 20 is arranged on the top of the pulverized coal bin 19 . The air compressor 3 is connected to the air storage tank 4, and the air storage tank 4 is provided with a compressed air release pipeline 5 to discharge excess compressed air. The compressed air from the air storage tank 4 blows back the powder collection bag 20 through the pulse back blowing compressed air pipe 17 . The lower conical bodies of the pulverized coal bin 19 and the intermediate bin 12 are respectively connected with a gas pipe 16 for fluidization and a gas pipe 11 for fluidization to be connected with the gas storage tank 4, and the pulverized coal layer is loosened with compressed air. Between the pulverized coal bin 19 and the intermediate bin 12, there is an air diffuser pipeline for discharging compressed gas. The lower part of the intermediate bin 12 is connected to the coal feed switch valve 10, the coal feed switch valve 10 and the gas storage tank 4 are connected to the coal feeder 7, and the coal feeder 7 is connected to the pulverized coal burner 24 through the burner coal supply pipe 21, which is a pulverized coal burner 24 provides pulverized coal and air mixture. The coal feeding switch valve 10 is equipped with a compressed air pipe 8 for adjusting the coal feeding amount, and the coal feeding amount can be adjusted by adjusting the compressed air in the coal feeding amount using the compressed air pipe 8 . The gas tank 1 provides gas for the pulverized coal burner 24, and the combustion-supporting blower 2 provides the primary combustion-supporting air 22 and the secondary combustion-supporting air 23 for the pulverized coal burner 24 through the pipeline. The pulverized coal burner 24 is located at the front of the boiler body 29, and the exhaust gas heat exchanger 28 is located at the rear of the boiler body 29, and is connected with the flue gas dust bag 27, the desulfurizer 26, and the exhaust gas induced draft fan 25 through pipelines. The waste flue gas that comes out from boiler body 29 is discharged through flue gas dedusting bag 27, desulfurizer 26, waste flue gas induced draft fan 25.

本发明可实现煤粉燃烧锅炉的小型化，可用于为工业或民用提供蒸汽和热水的场合。由于煤粉燃烧可获得高的燃烧效率，合理设计的低NOx燃烧器和优化配置的烟气后处理系统可有效控制大气污染物的排放，从而可使该锅炉机组实现节能、低污染。The invention can realize the miniaturization of the pulverized coal combustion boiler, and can be used in occasions of providing steam and hot water for industrial or civil use. Since pulverized coal combustion can obtain high combustion efficiency, a rationally designed low NOx burner and an optimally configured flue gas post-treatment system can effectively control the emission of air pollutants, so that the boiler unit can achieve energy saving and low pollution.

附图说明Description of drawings

图1为小型煤粉燃烧锅炉机组结构示意图。Figure 1 is a schematic diagram of the structure of a small pulverized coal combustion boiler unit.

具体实施方式：Detailed ways:

煤粉燃烧锅炉机组包括燃气罐1、助燃风机2、空压机3、储气罐4、压缩空气放散管路5、输送煤粉用压缩空气管6、给煤器7、.调节给煤量用压缩空气管8、煤粉运送汽车9、给煤开关阀10、中间粉仓流化用气管11、中间粉仓12、称重压力传感器13、钟形阀14、蝶阀15、煤粉仓流化气管16、脉冲反吹压缩空气管17、煤粉输送管路18、煤粉仓19、收粉布袋20、燃烧器供煤管21、一次助燃风22、二次助燃风23、煤粉燃烧器24、废烟气引风机25、脱硫器26、烟气除尘布袋27、废烟气换热器28、锅炉本体29。煤粉运送汽车9通过煤粉输送管路18连接煤粉仓19，煤粉仓19通过钟形阀14、蝶阀15连接中间粉仓12，中间粉仓12装有称重压力传感器13。收粉布袋20设在煤粉仓19的上方。空压机3连接储气罐4，储气罐4设有压缩空气放散管路5，排放多余的压缩空气。来自储气罐4的压缩空气通过脉冲反吹压缩空气管17反吹收粉布袋20。煤粉仓19和中间仓12的圆锥体下部分别接有流化用气管16和流化用气管11与储气罐4相连，用压缩空气松动煤粉层。在煤粉仓19和中间仓12之间通有散气管路，用于压缩气体的排放。中间仓12下部连接给煤开关阀10，给煤开关阀10和储气罐4连接给煤器7，给煤器7通过燃烧器供煤管21连接煤粉燃烧器24，为煤粉燃烧器24提供煤粉、空气混合物。在给煤开关阀10装有调节给煤量用压缩空气管8，通过调节给煤量用压缩空气管8中的压缩空气，可以调节给煤量。燃气罐1为煤粉燃烧器24提供燃气，助燃风机2通过管路给煤粉燃烧器24提供一次助燃风22、二次助燃风23。煤粉燃烧器24设在锅炉本体29的前边，废烟气换热器28设在锅炉本体29的后边，通过管路连接烟气除尘布袋27、脱硫器26、废烟气引风机25。从锅炉本体29出来的废烟气经烟气除尘布袋27、脱硫器26、废烟气引风机25排出。The pulverized coal combustion boiler unit includes gas tank 1, combustion-supporting fan 2, air compressor 3, gas storage tank 4, compressed air release pipeline 5, compressed air pipe for conveying pulverized coal 6, coal feeder 7, and adjusts the amount of coal Compressed air pipe 8, pulverized coal transport vehicle 9, coal supply switch valve 10, intermediate powder bin fluidization air pipe 11, intermediate powder bin 12, weighing pressure sensor 13, bell valve 14, butterfly valve 15, coal powder bin flow Gasification pipe 16, pulse blowback compressed air pipe 17, pulverized coal conveying pipeline 18, pulverized coal bin 19, powder collection bag 20, burner coal supply pipe 21, primary combustion air 22, secondary combustion air 23, pulverized coal combustion Device 24, waste flue gas induced draft fan 25, desulfurizer 26, flue gas dust removal bag 27, waste flue gas heat exchanger 28, boiler body 29. The pulverized coal transport vehicle 9 is connected to the pulverized coal bin 19 through the pulverized coal delivery pipeline 18, and the pulverized coal bin 19 is connected to the intermediate powder bin 12 through the bell valve 14 and the butterfly valve 15, and the intermediate powder bin 12 is equipped with a weighing pressure sensor 13. The powder collecting cloth bag 20 is arranged on the top of the pulverized coal bin 19 . The air compressor 3 is connected to the air storage tank 4, and the air storage tank 4 is provided with a compressed air release pipeline 5 to discharge excess compressed air. The compressed air from the air storage tank 4 blows back the powder collection bag 20 through the pulse back blowing compressed air pipe 17 . The lower conical bodies of the pulverized coal bin 19 and the intermediate bin 12 are respectively connected with a gas pipe 16 for fluidization and a gas pipe 11 for fluidization to be connected with the gas storage tank 4, and the pulverized coal layer is loosened with compressed air. Between the pulverized coal bin 19 and the intermediate bin 12, there is an air diffuser pipeline for discharging compressed gas. The lower part of the intermediate bin 12 is connected to the coal feed switch valve 10, the coal feed switch valve 10 and the gas storage tank 4 are connected to the coal feeder 7, and the coal feeder 7 is connected to the pulverized coal burner 24 through the burner coal supply pipe 21, which is a pulverized coal burner 24 provides pulverized coal and air mixture. The coal feeding switch valve 10 is equipped with a compressed air pipe 8 for adjusting the coal feeding amount, and the coal feeding amount can be adjusted by adjusting the compressed air in the coal feeding amount using the compressed air pipe 8 . The gas tank 1 provides gas for the pulverized coal burner 24, and the combustion-supporting blower 2 provides the primary combustion-supporting air 22 and the secondary combustion-supporting air 23 for the pulverized coal burner 24 through the pipeline. The pulverized coal burner 24 is located at the front of the boiler body 29, and the exhaust gas heat exchanger 28 is located at the rear of the boiler body 29, and is connected with the flue gas dust bag 27, the desulfurizer 26, and the exhaust gas induced draft fan 25 through pipelines. The waste flue gas that comes out from boiler body 29 is discharged through flue gas dedusting bag 27, desulfurizer 26, waste flue gas induced draft fan 25.

Claims (1)

1. small-sized pulverized coal firing boiler unit, mainly by coal dust preparation system, breeze blowing and combustion system, the boiler main frame, the flue gas after-treatment system, automatically control is formed with regulating system, it is characterized in that the pulverized coal firing boiler unit comprises fuel cartridge (1), combustion fan (2), air compressor machine (3), air accumulator (4), compressed air diffuses pipeline (5), pulverized coal conveying compressed air hose (6), coal feeder (7),. regulate coal-supplying amount compressed air hose (8), coal dust transports automobile (9), coal supply switch valve (10), middle powder storehouse fluidisation tracheae (11), middle powder storehouse (12), the pressure sensor (13) of weighing, bell-shaped valve (14), butterfly valve (15), Pulverized Coal Bin fluidisation tracheae (16), pulse backblowing compressed air hose (17), coal dust transfer pipeline (18), Pulverized Coal Bin (19), receive powder cloth bag (20), burner coal supply pipe (21), a combustion air (22), secondary combustion air (23), coal burner (24), useless smoke induced draught fan (25), devulcanizer (26), flue gas ash removal cloth bag (27), useless flue gas heat exchange device (28), boiler body (29); Coal dust transports automobile (9) and connects Pulverized Coal Bin (19) by coal dust transfer pipeline (18), powder storehouse (12) in the middle of Pulverized Coal Bin (19) connects by bell-shaped valve (14), butterfly valve (15), and the pressure sensor of weighing (13) is equipped with in middle powder storehouse (12); Receipts powder cloth bags (20) are located at the top of Pulverized Coal Bin (19); Air compressor machine (3) connects air accumulator (4), and air accumulator (4) is provided with compressed air and diffuses pipeline (5); Compressed air from air accumulator (4) connects receipts powder cloth bag (20) by pulse backblowing compressed air hose (17); The cone bottom of Pulverized Coal Bin (19) and intermediate bin (12) is connected to fluidisation respectively and links to each other with air accumulator (4) with tracheae (11) with fluidisation with tracheae (16); Between Pulverized Coal Bin (19) and intermediate bin (12), be connected with the diffuser road; Intermediate bin (12) bottom connects coal supply switch valve (10), and coal supply switch valve (10) is connected coal feeder (7) with air accumulator (4), and coal feeder (7) connects coal burner (24) by burner coal supply pipe (21); Adjusting coal-supplying amount compressed air hose (8) is housed in coal supply switch valve (10) front; Fuel cartridge (1) links to each other with coal burner (24); Combustion fan (2) provides a combustion air (22), secondary combustion air (23) for coal burner (24) by pipeline; Coal burner (24) is located at the front of boiler body (29), and useless flue gas heat exchange device (28) is located at the back of boiler body (29), connects flue gas ash removal cloth bag (27), devulcanizer (26), useless smoke induced draught fan (25) by pipeline.
CNU2007201031500U 2007-01-09 2007-01-09 A small pulverized coal combustion boiler unit Expired - Fee Related CN201000057Y (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101943418A (en) * 2010-09-29 2011-01-12 神华集团有限责任公司 Powder storage and supplying device and powder storage and supplying controlling method of coal dust boiler
CN102418916A (en) * 2011-12-06 2012-04-18 山西蓝天环保设备有限公司 Oil field gas injection boiler taking pulverized coal as fuel
CN102607050A (en) * 2012-03-28 2012-07-25 上海中科高等研究院 Intermediate warehousing type air powder system
CN102679329A (en) * 2012-05-30 2012-09-19 山西蓝天环保设备有限公司 Medium and small industrial coal powder heating boiler system
CN103672874A (en) * 2013-12-17 2014-03-26 太原锅炉集团有限公司 System for desulfurizing limestone in circulating fluidized bed boiler on basis of flow state reconstruction
CN104028357A (en) * 2014-06-07 2014-09-10 秦皇岛首秦金属材料有限公司 A medium-speed mill pulverizing system without an induced draft fan device for waste smoke
CN104583701A (en) * 2012-08-20 2015-04-29 奥图泰(芬兰)公司 Method and apparatus for feeding fine material to a concentrate or matte burner of a suspension smelting furnace
CN108386866A (en) * 2018-04-12 2018-08-10 扎克(青岛)船用设备有限公司 Pulverized-coal fired boiler powder-supply system is from inerting and stablizes powder-supply system

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101943418A (en) * 2010-09-29 2011-01-12 神华集团有限责任公司 Powder storage and supplying device and powder storage and supplying controlling method of coal dust boiler
CN102418916A (en) * 2011-12-06 2012-04-18 山西蓝天环保设备有限公司 Oil field gas injection boiler taking pulverized coal as fuel
CN102607050A (en) * 2012-03-28 2012-07-25 上海中科高等研究院 Intermediate warehousing type air powder system
CN102607050B (en) * 2012-03-28 2014-02-26 中国科学院上海高等研究院 Intermediate storage bin air powder system
CN102679329A (en) * 2012-05-30 2012-09-19 山西蓝天环保设备有限公司 Medium and small industrial coal powder heating boiler system
CN104583701A (en) * 2012-08-20 2015-04-29 奥图泰(芬兰)公司 Method and apparatus for feeding fine material to a concentrate or matte burner of a suspension smelting furnace
CN104583701B (en) * 2012-08-20 2016-08-24 奥图泰(芬兰)公司 For plasma being supplied to concentrate or the method and apparatus of matte burner of suspension smelting furnace
CN103672874A (en) * 2013-12-17 2014-03-26 太原锅炉集团有限公司 System for desulfurizing limestone in circulating fluidized bed boiler on basis of flow state reconstruction
CN104028357A (en) * 2014-06-07 2014-09-10 秦皇岛首秦金属材料有限公司 A medium-speed mill pulverizing system without an induced draft fan device for waste smoke
CN108386866A (en) * 2018-04-12 2018-08-10 扎克(青岛)船用设备有限公司 Pulverized-coal fired boiler powder-supply system is from inerting and stablizes powder-supply system
CN108386866B (en) * 2018-04-12 2023-11-24 扎克(青岛)船用设备有限公司 Self-inerting and stable powder supply system of pulverized coal boiler

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