CN204438087U - A kind of coal steam-electric plant smoke comprehensive waste-heat utilizing device - Google Patents
A kind of coal steam-electric plant smoke comprehensive waste-heat utilizing device Download PDFInfo
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- CN204438087U CN204438087U CN201520009067.1U CN201520009067U CN204438087U CN 204438087 U CN204438087 U CN 204438087U CN 201520009067 U CN201520009067 U CN 201520009067U CN 204438087 U CN204438087 U CN 204438087U
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- 239000002918 waste heat Substances 0.000 title claims abstract description 34
- 239000003245 coal Substances 0.000 title description 3
- 239000000779 smoke Substances 0.000 title description 2
- 239000003546 flue gas Substances 0.000 claims abstract description 125
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 124
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000010521 absorption reaction Methods 0.000 claims abstract description 22
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 22
- 230000023556 desulfurization Effects 0.000 claims abstract description 22
- 239000012716 precipitator Substances 0.000 claims abstract description 9
- 239000000428 dust Substances 0.000 claims abstract description 6
- 238000009833 condensation Methods 0.000 claims abstract description 5
- 230000005494 condensation Effects 0.000 claims abstract description 5
- 239000004071 soot Substances 0.000 claims description 20
- 239000012717 electrostatic precipitator Substances 0.000 claims description 12
- 230000035939 shock Effects 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000010795 Steam Flooding Methods 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 229910052815 sulfur oxide Inorganic materials 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
- F23J3/02—Cleaning furnace tubes; Cleaning flues or chimneys
- F23J3/023—Cleaning furnace tubes; Cleaning flues or chimneys cleaning the fireside of watertubes in boilers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Supply (AREA)
- Chimneys And Flues (AREA)
Abstract
本实用新型提供一种火电厂烟气余热综合利用装置，其包括空气预热器、第一级换热器、冷凝水装置、吸收式制冷机、电除尘装置、第二级换热器、脱硫装置和烟囱；空气预热器、电除尘装置、脱硫装置和烟囱依次通过管路串联连接；在空气预热器和电除尘装置之间增设了第一级换热器，用于降低空气预热器排出的烟气温度，并将该高温的烟气与冷水交换后将加热的水输送至冷凝水装置和吸收式制冷机再次利用；第二级换热器将热能又输送至空气预热器得到二次利用，防止了能源浪费。本实用新型增加了第一级换热器和第二级换热器，可以降低排出烟气的温度，防止烟气对空气造成污染。
The utility model provides a comprehensive utilization device for flue gas waste heat in a thermal power plant, which includes an air preheater, a first-stage heat exchanger, a condensation water device, an absorption refrigerator, an electric dust removal device, a second-stage heat exchanger, a desulfurization device and chimney; the air preheater, electric precipitator, desulfurization device, and chimney are connected in series through pipelines; a first-stage heat exchanger is added between the air preheater and the electric precipitator to reduce air preheating The temperature of the flue gas discharged from the device, and the high-temperature flue gas is exchanged with cold water, and then the heated water is sent to the condensing water device and the absorption refrigerator for reuse; the second-stage heat exchanger transfers the heat energy to the air preheater Get secondary utilization, prevent energy waste. The utility model adds a first-stage heat exchanger and a second-stage heat exchanger, which can reduce the temperature of the discharged flue gas and prevent the flue gas from polluting the air.
Description
技术领域technical field
本实用新型属于火电厂技术领域，具体而言，本实用新型特别涉及一种火电厂烟气余热综合利用装置。The utility model belongs to the technical field of thermal power plants. Specifically, the utility model particularly relates to a comprehensive utilization device for waste heat of flue gas in thermal power plants.
背景技术Background technique
火电厂利用燃料例如煤燃烧产生的热能将水加热成水蒸汽，水蒸汽的压力驱动汽轮机做功从而产生电能。Thermal power plants use the heat generated by the combustion of fuel such as coal to heat water into steam, and the pressure of the steam drives a steam turbine to do work to generate electricity.
然而在火力发电过程中，燃料燃烧释放的烟气中含有粉尘、二氧化碳、硫氧化物、碳氧化物、汞及其化合物等有害物质，将烟气直接排放不仅污染大气，给人们身体健康带来危害，还可能造成酸雨、光化学烟雾、臭氧空洞、温室效应等现象，进一步威胁人类生存的环境。再者国家对节能提出了新的要求。对于提高锅炉热效率日趋迫切。其中利用锅炉排烟余热是最有效的途径之一。据相关数据表明，由于锅炉的原始设计和燃用煤种的变化，一般工业锅炉的热效率约为60％～70％，它的排烟温度大概在250～350℃之间，而导热油炉，排烟温度更是达到280℃以上，大量余热未充分利，极大的浪费了能源。However, in the process of thermal power generation, the flue gas released by fuel combustion contains harmful substances such as dust, carbon dioxide, sulfur oxides, carbon oxides, mercury and their compounds. Directly discharging the flue gas not only pollutes the atmosphere, but also brings harm to people's health. It may also cause acid rain, photochemical smog, ozone hole, greenhouse effect and other phenomena, further threatening the environment for human survival. Furthermore, the country has put forward new requirements for energy conservation. It is increasingly urgent to improve the thermal efficiency of boilers. One of the most effective ways is to use the waste heat from boiler exhaust. According to relevant data, due to changes in the original design of the boiler and the type of coal used, the thermal efficiency of a general industrial boiler is about 60% to 70%, and its exhaust gas temperature is about 250 to 350°C, while the heat conduction oil furnace, The exhaust gas temperature is even higher than 280°C, and a large amount of waste heat is not fully utilized, which greatly wastes energy.
由上分析，可知现有技术的火电厂发电过程存在以下特点和缺陷：From the above analysis, it can be seen that the thermal power plant power generation process of the prior art has the following characteristics and defects:
1、将现有火电厂发电释放的烟气直接排放到空气中，会导致气温升高，并对环境造成污染。1. Discharging the flue gas released by the existing thermal power plants directly into the air will cause the temperature to rise and cause pollution to the environment.
2、现在火电厂发电释放的烟气直接排放到空气中，导致大量余热未得到充分利用，极大的浪费了能源。2. At present, the flue gas released by thermal power plants is directly discharged into the air, resulting in a large amount of waste heat not being fully utilized, which greatly wastes energy.
因此降低锅炉烟气温度已经成为锅炉节能的一个重要途径。Therefore, reducing the boiler flue gas temperature has become an important way for boiler energy saving.
实用新型内容Utility model content
本实用新型的目的在于提供一种火电厂烟气余热综合利用装置，以至少解决现有技术存在的对环境造成污染等问题，以及进一步地解决现有技术中存在浪费资源等问题。The purpose of the utility model is to provide a thermal power plant flue gas waste heat comprehensive utilization device to at least solve the problems of the prior art such as pollution to the environment, and further solve the problems of wasting resources in the prior art.
为了解决上述问题，本实用新型提供一种火电厂烟气余热综合利用装置，其技术方案如下：In order to solve the above problems, the utility model provides a thermal power plant flue gas waste heat comprehensive utilization device, its technical scheme is as follows:
一种火电厂烟气余热综合利用装置，包括：包括空气预热器、第一级换热器、冷凝水装置、吸收式制冷机、电除尘装置、脱硫装置和烟囱；烟气由所述空气预热器的烟气进口端进入所述空气预热器内，所述空气预热器的烟气出口端与所述第一级换热器的第一回路进口端通过管路相连通；所述第一级换热器的第一回路出口端与所述电除尘装置的进口端通过管路相连通；所述电除尘装置的出口端与所述脱硫装置的进口端通过管路相连通；所述脱硫装置的出口端通过管路连通至所述烟囱；所述第一级换热器的第二回路出口端与所述冷凝水装置的进口端通过管路相连通；所述冷凝水装置的出口端与所述第一级换热器的第二回路进口端通过管路相连通；所述第一级换热器的第三回路出口端与所述吸收式制冷机的进口端通过管路相连通；所述吸收式制冷机的出口端与所述第一级换热器的第三回路进口端通过管路相连通。A comprehensive utilization device for flue gas waste heat in a thermal power plant, comprising: an air preheater, a first-stage heat exchanger, a condensation water device, an absorption refrigerator, an electric dust removal device, a desulfurization device and a chimney; the flue gas is produced by the air The flue gas inlet end of the preheater enters the air preheater, and the flue gas outlet end of the air preheater communicates with the first circuit inlet end of the first stage heat exchanger through a pipeline; The outlet end of the first circuit of the first-stage heat exchanger is connected with the inlet end of the electrostatic precipitator through a pipeline; the outlet end of the electrostatic precipitator is connected with the inlet end of the desulfurization device through a pipeline; The outlet end of the desulfurization device is connected to the chimney through a pipeline; the outlet end of the second circuit of the first-stage heat exchanger is connected with the inlet end of the condensate device through a pipeline; the condensate device The outlet end of the first stage heat exchanger is connected with the inlet end of the second circuit through a pipeline; the outlet end of the third circuit of the first stage heat exchanger is connected with the inlet end of the absorption refrigerator through a pipe The outlet port of the absorption refrigerating machine is connected with the inlet port of the third circuit of the first-stage heat exchanger through a pipeline.
优选地，在所述火电厂烟气余热综合利用装置中，还包括：第二级换热器，所述第二级换热器的进口端与所述电除尘装置的出口端通过管路相连通；所述第二级换热器的出口端与所述脱硫装置的进口端通过管路相连通。Preferably, in the thermal power plant flue gas waste heat comprehensive utilization device, it also includes: a second-stage heat exchanger, the inlet end of the second-stage heat exchanger is connected to the outlet end of the electrostatic precipitator through a pipeline The outlet end of the second stage heat exchanger is connected with the inlet end of the desulfurization device through a pipeline.
优选地，在所述火电厂烟气余热综合利用装置中，所述第二级换热器还设有冷空气进口端和热空气出口端，在所述空气预热器上还设有热空气回口端；所述第二级换热器的冷空气进口端与大气相通；所述第二级换热器的热空气出口端与所述空气预热器的热空气回口端通过管路相连通。Preferably, in the thermal power plant flue gas waste heat comprehensive utilization device, the second-stage heat exchanger is also provided with a cold air inlet port and a hot air outlet port, and a hot air outlet port is also provided on the air preheater. The return port; the cold air inlet port of the second-stage heat exchanger communicates with the atmosphere; the hot air outlet port of the second-stage heat exchanger and the hot air return port of the air preheater pass through the pipeline connected.
优选地，在所述火电厂烟气余热综合利用装置中，与所述第一级换热器的第一回路进口端相连的烟气通道进气段为渐扩式喇叭口结构，与所述第一级换热器的第一回路出口端相连的烟气通道出气段为渐缩式喇叭口结构，使所述第一级换热器内的烟气通道的流通截面积不变。Preferably, in the thermal power plant flue gas waste heat comprehensive utilization device, the flue gas channel inlet section connected to the first circuit inlet end of the first stage heat exchanger is a gradually expanding bell mouth structure, and the The outlet section of the flue gas channel connected to the outlet end of the first circuit of the first stage heat exchanger has a tapered bell mouth structure, so that the flow cross-sectional area of the flue gas channel in the first stage heat exchanger remains unchanged.
优选地，在所述火电厂烟气余热综合利用装置中，与所述第二级换热器的进口端相连的烟气通道进气段为渐扩式喇叭口结构，与所述第二级换热器的出口端相连的烟气通道出气段为渐缩式喇叭口结构，使所述第二级换热器内的烟气流通截面积不变。Preferably, in the thermal power plant flue gas waste heat comprehensive utilization device, the flue gas channel inlet section connected to the inlet end of the second-stage heat exchanger is a gradually expanding bell-mouth structure, and the second-stage The outlet section of the flue gas channel connected to the outlet end of the heat exchanger is a tapered bell-mouth structure, so that the cross-sectional area of the flue gas flow in the second-stage heat exchanger remains unchanged.
优选地，在所述火电厂烟气余热综合利用装置中，还包括：支撑件，所述支撑件设置在所述烟气通道进气段和所述第一回路进口端之间，同时所述支撑件还设置在所述烟气通道出气段和所述第一回路出口端之间，用于对所述第一级换热器提供固定支撑。Preferably, in the thermal power plant flue gas waste heat comprehensive utilization device, it also includes: a support member, the support member is arranged between the intake section of the flue gas channel and the inlet end of the first circuit, while the A support member is also arranged between the outlet section of the flue gas channel and the outlet end of the first circuit, and is used to provide fixed support for the first-stage heat exchanger.
优选地，在所述火电厂烟气余热综合利用装置中，还包括：防磨板，所述防磨板安装在所述第一级换热器的前端换热管的迎风面处，用于起到防磨损作用。Preferably, in the thermal power plant flue gas waste heat comprehensive utilization device, it also includes: a wear plate installed on the windward side of the front heat exchange tube of the first stage heat exchanger for Play the role of anti-wear.
优选地，在所述火电厂烟气余热综合利用装置中，还包括：两个压力测力器，一个所述压力测力器安装在所述第一级换热器前部的烟气通道上，用于测量未进入所述第一级换热器的烟气压力，另一个所述压力测力器安装在所述第一级换热器后部的烟气通道上，用于测量所述第一级换热器排出的烟气压力；和激波吹灰器，所述激波吹灰器安装在第一级换热器内，当两个所述压力测力器之间的压力差大于400Pa时，启动所述激波吹灰器进行吹灰处理。Preferably, in the thermal power plant flue gas waste heat comprehensive utilization device, it further includes: two pressure dynamometers, and one of the pressure dynamometers is installed on the flue gas channel at the front of the first-stage heat exchanger , used to measure the pressure of the flue gas that does not enter the first-stage heat exchanger, and the other pressure gauge is installed on the flue gas channel at the rear of the first-stage heat exchanger for measuring the The flue gas pressure discharged from the first stage heat exchanger; and the shock wave soot blower installed in the first stage heat exchanger, when the pressure difference between the two pressure dynamometers When it is greater than 400Pa, start the shock wave sootblower for sootblowing treatment.
优选地，在所述火电厂烟气余热综合利用装置中，所述激波吹灰器为多个，与所述第一级换热器内换热管的排数相同，分别安装在所述第一级换热器的每排换热管的一侧，用于将该排换热管上烟灰吹掉。Preferably, in the thermal power plant flue gas waste heat comprehensive utilization device, there are multiple shock wave sootblowers, which are the same as the number of rows of heat exchange tubes in the first-stage heat exchanger, and are respectively installed in the One side of each row of heat exchange tubes of the first stage heat exchanger is used to blow off the soot on the row of heat exchange tubes.
优选地，在所述火电厂烟气余热综合利用装置中，所述第二级换热器的换热管为玻璃管或者陶瓷管。Preferably, in the thermal power plant flue gas waste heat comprehensive utilization device, the heat exchange tubes of the second stage heat exchanger are glass tubes or ceramic tubes.
分析可知，与现有技术相比，本实用新型首先增加了第一级换热器和第二级换热器，降低排出烟气的温度，防止烟气对空气造成污染。再者，本实用新型将第一级换热器的热能用于冷凝水装置和吸收式制冷机，这样使烟气中的热能得到再次充分利用，防止了能源浪费。本实用新型将第二级换热器的热能再回输送至空气预热器，提高进入空气预热器的二次风温，这样可以减少常规暖风器的用蒸汽量，增强锅炉的燃烧效果；再者可以提高空气预热器出口端的烟气温度，为烟气余热进一步利用提供条件。Analysis shows that, compared with the prior art, the utility model first increases the first-stage heat exchanger and the second-stage heat exchanger to reduce the temperature of the exhausted flue gas and prevent the flue gas from polluting the air. Furthermore, the utility model uses the heat energy of the first-stage heat exchanger for the condensate water device and the absorption refrigerator, so that the heat energy in the flue gas can be fully utilized again, and energy waste is prevented. The utility model transports the heat energy of the second-stage heat exchanger back to the air preheater to increase the temperature of the secondary air entering the air preheater, which can reduce the amount of steam used by conventional air heaters and enhance the combustion effect of the boiler ; Furthermore, the flue gas temperature at the outlet end of the air preheater can be increased to provide conditions for further utilization of the waste heat of the flue gas.
附图说明Description of drawings
图1为本实用新型优选实施例的结构示意图。Fig. 1 is a schematic structural view of a preferred embodiment of the present invention.
图2为本实用新型优选实施例的第一级换热器、第一回路进口端、第一回路出口端的组装结构示意图。Fig. 2 is a schematic diagram of the assembly structure of the first-stage heat exchanger, the inlet end of the first loop, and the outlet end of the first loop in a preferred embodiment of the present invention.
1-空气预热器；11-烟气进口端；12-烟气出口端；13-热气回口端；2-第一级换热器；21-第一回路进口端；22-第一回路出口端；23-第二回路出口端；24-第二回路进口端；25-第三回路出口端；26-第三回路进口端；27-烟气通道进气段；28-烟气通道出气段；3-冷凝水装置；31-进口端；32-出口端；4-吸收式制冷机；41-进口端；42-出口端；5-电除尘装置；51-进口端；52-出口端；6-第二级换热器；61-进口端；62-出口端；63-冷空气进口端；64-热空气出口端；7-脱硫装置；71-进口端；72-出口端。1-air preheater; 11-flue gas inlet; 12-flue gas outlet; 13-hot gas return port; 2-first-stage heat exchanger; 21-first loop inlet; 22-first loop Outlet port; 23-exit port of the second circuit; 24-inlet port of the second circuit; 25-exit port of the third circuit; 26-inlet port of the third circuit; Section; 3-condensate water device; 31-inlet port; 32-exit port; 4-absorption refrigerator; 41-inlet port; 42-export port; 5-electrostatic precipitator; 51-inlet port; 52-export port 6-second stage heat exchanger; 61-inlet port; 62-outlet port; 63-cold air inlet port; 64-hot air outlet port;
具体实施方式Detailed ways
下面结合附图和具体实施方式对本实用新型做进一步详细说明。The utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
如图1所示，本实用新型优选实施例的火电厂烟气余热综合利用装置主要包括空气预热器1、第一级换热器2、冷凝水装置3、吸收式制冷机4、电除尘装置5、脱硫装置7和烟囱。As shown in Figure 1, the thermal power plant flue gas waste heat comprehensive utilization device of the preferred embodiment of the utility model mainly includes an air preheater 1, a first-stage heat exchanger 2, a condensate water device 3, an absorption refrigerator 4, an electric precipitator Device 5, desulfurization device 7 and chimney.
空气预热器1和第一级换热器2利用烟气的热量对进入各自内部的流体进行加热。空气预热器1、电除尘装置5、脱硫装置7依次串联连接，将第一级换热器2设置在空气预热器1和电除尘装置5之间。The air preheater 1 and the first stage heat exchanger 2 use the heat of the flue gas to heat the fluid entering their respective interiors. The air preheater 1 , the electric precipitator 5 , and the desulfurization device 7 are sequentially connected in series, and the first-stage heat exchanger 2 is arranged between the air preheater 1 and the electric precipitator 5 .
具体而言，在空气预热器1上设有烟气进口端11、烟气出口端12，在空气预热器8内流通的流体为空气，烟气经空气预热器1的烟气进口端11进入，从烟气出口端12排出，再次过程中，与空气预热器1内的空气进行换热，使得其内的空气温度升高，烟气温度降低，温度高的空气用作外用，温度降低后的烟气由第一回路进口端21进入第一级换热器2与第一级换热器2内的流体进行换热；Specifically, the air preheater 1 is provided with a flue gas inlet port 11 and a flue gas outlet port 12, the fluid circulating in the air preheater 8 is air, and the flue gas passes through the flue gas inlet of the air preheater 1 The flue gas enters through port 11 and is discharged from the flue gas outlet port 12. During the second process, it exchanges heat with the air in the air preheater 1, so that the temperature of the air in it increases, the temperature of the flue gas decreases, and the air with high temperature is used for external use. , the temperature-reduced flue gas enters the first-stage heat exchanger 2 from the inlet port 21 of the first circuit to exchange heat with the fluid in the first-stage heat exchanger 2;
第一级换热器2用于将空气预热器1和电除尘装置5之间的烟气余热回收给其内流通的流体进行热交换，从而将回收的热量与冷凝水装置3、吸收式制冷机4进行热交换；即在第一级换热器2内的流体为冷水，冷凝水装置3的出口端32与第一级换热器2的第二进口端24通过管路相连通；冷凝水装置3的进口端31与第一级换热器2的第二出口端23通过管路相连通；吸收式制冷机4的出口端42与第一级换热器2的第三进口端26通过管路相连通，吸收式制冷机4的进口端41与第一级换热器2的第三出口端25通过管路相连通；第一级换热器2回收的烟气热量用于加热其内的冷水，并将加热后的冷水通过管路分为两路分别输送至冷凝水装置3和吸收式制冷机4；加热冷凝水装置3(即电厂回热系统)中的冷凝水，以达到减少电厂回热抽气，降低机组热耗率的效果；加热吸收式制冷机4中的热工质水，作为了吸收式制冷机4的驱动热源，吸收式制冷机4输出冷量来供应电厂内的所有冷负荷，包括集控楼、招待所、办公楼等；The first-stage heat exchanger 2 is used to recover the waste heat of the flue gas between the air preheater 1 and the electrostatic precipitator 5 to the fluid circulating in it for heat exchange, so that the recovered heat is combined with the condensate water device 3 and the absorption type The refrigerator 4 performs heat exchange; that is, the fluid in the first-stage heat exchanger 2 is cold water, and the outlet port 32 of the condensation water device 3 is connected to the second inlet port 24 of the first-stage heat exchanger 2 through a pipeline; The inlet port 31 of the condensation water device 3 is connected with the second outlet port 23 of the first-stage heat exchanger 2 through pipelines; the outlet port 42 of the absorption refrigerator 4 is connected with the third inlet port of the first-stage heat exchanger 2 26 is connected through pipelines, and the inlet end 41 of the absorption refrigerating machine 4 is connected with the third outlet end 25 of the first-stage heat exchanger 2 through pipelines; the flue gas heat recovered by the first-stage heat exchanger 2 is used for Heating the cold water in it, and dividing the heated cold water into two paths through pipelines and sending them to the condensing water device 3 and the absorption chiller 4 respectively; In order to achieve the effect of reducing the heat recovery and air extraction of the power plant and reducing the heat consumption rate of the unit; heating the thermal water in the absorption refrigerator 4 serves as the driving heat source of the absorption refrigerator 4, and the absorption refrigerator 4 outputs cooling capacity to Supply all cooling loads in the power plant, including centralized control buildings, guest houses, office buildings, etc.;
第一级换热器2的第一回路出口端22通过管路与电除尘装置5的进口端51通过管路相连通，最终使第一级换热器2输送至电除尘装置5的烟气温度降至110℃左右；这样进入电除尘装置5的烟气温度降低，可以提升电除尘装置5的除尘效果同时可有效减低设备电耗。再进入脱硫装置7脱硫，然后由烟囱排出。The outlet end 22 of the first circuit of the first-stage heat exchanger 2 is connected to the inlet end 51 of the electrostatic precipitator 5 through a pipeline, so that the first-stage heat exchanger 2 is transported to the flue gas of the electric precipitator 5 The temperature drops to about 110°C; thus, the temperature of the flue gas entering the electrostatic precipitator 5 decreases, which can improve the dust removal effect of the electrostatic precipitator 5 and effectively reduce the power consumption of the equipment. Then enter the desulfurization device 7 for desulfurization, and then discharge from the chimney.
为了进一步降低烟气温度，可以在电除尘装置5和脱硫装置7之间设有第二级换热器6，具体为：电除尘装置5的出口端52与第二级换热器6的进口端61通过管路相连通，第二级换热器6的出口端62与脱硫装置7的进口端71通过管路相连通，脱硫装置7的出口端72连通至烟囱。In order to further reduce the flue gas temperature, a second-stage heat exchanger 6 can be provided between the electric precipitator 5 and the desulfurization device 7, specifically: the outlet end 52 of the electric precipitator 5 and the inlet of the second-stage heat exchanger 6 The end 61 is connected through the pipeline, the outlet end 62 of the second stage heat exchanger 6 is connected with the inlet end 71 of the desulfurization device 7 through the pipeline, and the outlet end 72 of the desulfurization device 7 is connected to the chimney.
为了进一步利用烟气中的余热，第二级换热器6设有冷空气进口端63和热空气出口端64，在空气预热器1上设有热空气回口端13，在第二级换热器6内进行烟气和空气(即来自于冷空气进口端63的冷空气)的换热，并将换热后的热空气通过热空气回口端13输送至空气预热器1，提高进入空气预热器1的二次风温，这样可以减少常规暖风器的用蒸汽量，增强锅炉的燃烧效果；再者可以提高空气预热器出口端12的烟气温度，为烟气余热进一步利用提供条件。In order to further utilize the waste heat in the flue gas, the second-stage heat exchanger 6 is provided with a cold air inlet port 63 and a hot air outlet port 64, and a hot air return port 13 is provided on the air preheater 1. Heat exchange between flue gas and air (that is, cold air from the cold air inlet port 63) is performed in the heat exchanger 6, and the hot air after heat exchange is delivered to the air preheater 1 through the hot air return port 13, Increase the temperature of the secondary air entering the air preheater 1, which can reduce the amount of steam used by conventional air heaters and enhance the combustion effect of the boiler; moreover, the temperature of the flue gas at the outlet end 12 of the air preheater can be increased to increase the temperature of the flue gas Provide conditions for further utilization of waste heat.
在实际的工作中，需要考虑如何实现第一级换热器2安装位置的烟气通道(即管路)内的流通截面积不变，在这种情况下，要对原来的烟气通道作出适当的改变，增大该段烟气通道的几何尺寸，如图2所示，本实用新型采用的手段为：与第一回路进口端21相连的烟气通道进气段27为渐扩式喇叭口结构，与第一回路出口端22相连的烟气通道出气段28为渐缩式喇叭口结构，使第一级换热器2内的烟气通道的流通截面积不变。其理论为，将第一级换热器2前端位置的烟气通道进气段27采用渐扩式喇叭口设计，将第一级换热器2后端位置的烟气通道出气段28采用渐缩式喇叭口设计，这样可以使第一级换热器2安装在烟气通道内保证流通截面积不变。同理，本实用新型与进口端61相连的烟气通道进气段为渐扩式喇叭口结构，与出口端62相连的烟气通道出气段为渐缩式喇叭口结构，使第二级换热器6内的烟气流通截面积不变。In actual work, it is necessary to consider how to realize that the flow cross-sectional area in the flue gas channel (that is, the pipeline) at the installation position of the first stage heat exchanger 2 remains unchanged. In this case, the original flue gas channel must be made Appropriate changes to increase the geometric dimensions of this section of flue gas passage, as shown in Figure 2, the means adopted by the utility model are: the inlet section 27 of the flue gas passage connected to the inlet end 21 of the first circuit is a gradually expanding horn The outlet section 28 of the flue gas channel connected to the outlet port 22 of the first circuit is a tapered bell mouth structure, so that the cross-sectional area of the flue gas channel in the first-stage heat exchanger 2 remains unchanged. The theory is that the inlet section 27 of the flue gas channel at the front end of the first-stage heat exchanger 2 adopts a gradually expanding bell mouth design, and the outlet section 28 of the flue gas channel at the rear end of the first-stage heat exchanger 2 adopts a gradually expanding bell mouth design. The contracted bell mouth design allows the first-stage heat exchanger 2 to be installed in the flue gas channel to ensure that the cross-sectional area of the flow remains unchanged. In the same way, the inlet section of the flue gas channel connected to the inlet port 61 of the utility model is a gradually expanding bell-mouth structure, and the outlet section of the flue gas channel connected to the outlet port 62 is a tapered bell-mouth structure, so that the second-stage replacement The flue gas circulation cross-sectional area in the heater 6 is constant.
将第一级换热器2安装在烟气通道中，需要考虑怎样能够使新增加的第一级换热器2在烟气通道中稳定牢固，基于此，本实用新型还包括支撑件，支撑件设置在烟气通道进气段27和第一回路进口端21之间，同时支撑件还设置在烟气通道出气段28和第一回路出口端22之间，用于对第一级换热器2提供固定支撑。同理，本实用新型在进口端61和烟气通道进气段之间设置支撑件，在出口端62和烟气通道出气段之间设置支撑件，用于对第二级换热器6提供固定支撑。To install the first-stage heat exchanger 2 in the flue gas passage, it is necessary to consider how to make the newly added first-stage heat exchanger 2 stable and firm in the flue gas passage. Based on this, the utility model also includes a support, a support The support member is arranged between the inlet section 27 of the flue gas channel and the inlet end 21 of the first circuit, and the support member is also arranged between the outlet section 28 of the flue gas channel and the outlet end 22 of the first circuit for heat exchange of the first stage. Device 2 provides a fixed support. In the same way, the utility model sets a support between the inlet end 61 and the inlet section of the flue gas channel, and sets a support between the outlet end 62 and the outlet section of the flue gas channel, which is used to provide the second stage heat exchanger 6 Fixed support.
为了能够使第一级换热器2更好地实现气液换热(即烟气通道内的烟气与冷凝水装置3、吸收式制冷机4的液体之间进行热交换)，并且能够防止烟气对第一级换热器2的结构造成损坏，本实用新型还包括防磨板(未图示)，防磨板安装在第一级换热器2的前端换热管的迎风面处，用于起到防磨损作用。进一步优先为，在第一级换热器2的前端三排换热管的迎风面均安装防磨板。In order to enable the first-stage heat exchanger 2 to better realize gas-liquid heat exchange (that is, heat exchange between the flue gas in the flue gas channel and the liquid in the condensate water device 3 and the absorption refrigerator 4), and to prevent The flue gas causes damage to the structure of the first-stage heat exchanger 2, and the utility model also includes a wear-resistant plate (not shown), which is installed on the windward side of the front-end heat exchange tube of the first-stage heat exchanger 2 , used to play the role of anti-wear. It is further preferred to install wear-resistant plates on the windward surfaces of the three rows of heat exchange tubes at the front end of the first stage heat exchanger 2 .
本实用新型的第一级换热器2实现的是气液换热，由于烟气中携带烟灰，烟灰在穿过第一级换热器2时会粘附在第一级换热器2的换热管上，这样会降低气液换热的质量，为了能够保证换热质量，本实用新型需要考虑如何将粘附在换热管上烟灰和粘附在第一级换热器2内壁上的烟灰处理掉，基于此，本实用新型还包括两个压力测力器，一个压力测力器安装在第一级换热器2前部的烟气通道上，用于测量未进入第一级换热器2的烟气压力，另一个压力测力器安装在第一级换热器2后部的烟气通道上，用于测量第一级换热器2排出的烟气压力；和激波吹灰器(未图示)，激波吹灰器安装在第一级换热器2内，当两个压力测力器之间的压力差大于400Pa时，则证明第一级换热器2内已积灰，需要吹灰，这时启动激波吹灰器进行吹灰处理。为了能够提高吹灰质量，本实用新型的激波吹灰器为多个，激波吹灰器的数量与第一级换热器2内换热管的排数相同，分别安装在第一级换热器2的每排换热管的一侧，用于将该排换热管上烟灰吹掉。The first-stage heat exchanger 2 of the utility model realizes gas-liquid heat exchange. Since the smoke carries soot, the soot will adhere to the first-stage heat exchanger 2 when it passes through the first-stage heat exchanger 2. On the heat exchange tube, this will reduce the quality of gas-liquid heat exchange. In order to ensure the heat exchange quality, the utility model needs to consider how to adhere to the soot on the heat exchange tube and the inner wall of the first stage heat exchanger 2 Based on this, the utility model also includes two pressure dynamometers, one pressure dynamometer is installed on the flue gas channel at the front of the first-stage heat exchanger 2, and is used to measure The flue gas pressure of the heat exchanger 2, another pressure gauge is installed on the flue gas channel at the rear of the first-stage heat exchanger 2, and is used to measure the flue gas pressure discharged from the first-stage heat exchanger 2; and Wave soot blower (not shown), the shock wave soot blower is installed in the first stage heat exchanger 2, when the pressure difference between the two pressure dynamometers is greater than 400Pa, it proves that the first stage heat exchanger 2. Soot has been accumulated inside and soot blowing is required. At this time, start the shock wave soot blower for soot blowing. In order to improve the quality of soot blowing, there are multiple shock wave soot blowers in the utility model, the number of shock wave soot blowers is the same as the number of rows of heat exchange tubes in the first stage heat exchanger 2, and they are respectively installed in the first stage One side of each row of heat exchange tubes of the heat exchanger 2 is used to blow off soot on the row of heat exchange tubes.
与第一级换热器2的气液换热不同，第二级换热器6进行的气气换热，在第二级换热器6的烟气比热容和空气比热容相差不大，远小于烟气的比热容和液体(即冷凝水装置3和吸收式制冷机4内工质水)的比热容的差值，所以第二级换热器6内的换热面积和体积足够大就能实现换热；但是第二级换热器6是直接借用外界环境的冷空气，在这种情况下需要考虑如何解决冷空气防腐问题，基于此，本实用新型的第二级换热器6的换热管选为玻璃管或者陶瓷管，充分利用玻璃管和陶瓷管的耐腐蚀的稳定性。再者，烟气温度也不宜降低过多，以满足后续脱硫需要为前提，温度降低至50℃～70℃较为合适，最佳温度为70℃(即第二级换热器6换热后出口端62所排烟气的温度为70℃)；温度降低到脱硫装置7需要的温度，如果温度高于脱硫装置7需要的烟气进口温度，则需继续进行喷水降温，浪费水。如果温度低于脱硫装置7需要的烟气进口温度，则影响脱硫效果。烟气温度的控制可以采用进入第二级换热器6的冷空气的流量和旁通量来实现，当烟气温度低时，减少进入第二级换热器6的冷空气量、加大旁通量；反之增加进入第二级换热器的冷空气量、减小旁通量。Different from the gas-liquid heat exchange of the first-stage heat exchanger 2, the gas-gas heat exchange performed by the second-stage heat exchanger 6, the specific heat capacity of the flue gas in the second-stage heat exchanger 6 is not much different from the specific heat capacity of the air, which is much smaller than The difference between the specific heat capacity of the flue gas and the specific heat capacity of the liquid (that is, the working medium water in the condensing water device 3 and the absorption refrigerator 4), so the heat exchange area and volume in the second-stage heat exchanger 6 are large enough to realize the heat exchange heat; but the second-stage heat exchanger 6 directly borrows the cold air from the external environment. In this case, it is necessary to consider how to solve the anti-corrosion problem of the cold air. Based on this, the heat exchange of the second-stage heat exchanger 6 of the present utility model The tube is selected as a glass tube or a ceramic tube, and the corrosion resistance stability of the glass tube and the ceramic tube is fully utilized. Furthermore, the flue gas temperature should not be lowered too much, on the premise of meeting the needs of subsequent desulfurization, it is more appropriate to lower the temperature to 50°C-70°C, and the optimum temperature is 70°C (that is, the outlet of the second-stage heat exchanger 6 after heat exchange) The temperature of the exhausted flue gas at end 62 is 70°C); the temperature is reduced to the temperature required by the desulfurization device 7, if the temperature is higher than the flue gas inlet temperature required by the desulfurization device 7, it is necessary to continue to spray water to cool down, wasting water. If the temperature is lower than the flue gas inlet temperature required by the desulfurization device 7, the desulfurization effect will be affected. The control of the flue gas temperature can be realized by the flow rate and bypass volume of the cold air entering the second-stage heat exchanger 6. When the temperature of the flue gas is low, the amount of cold air entering the second-stage heat exchanger 6 is reduced, Bypass capacity; on the contrary, increase the amount of cold air entering the second-stage heat exchanger and reduce the bypass capacity.
在本优选实施例中，通过两级换热器，并将换热器得到的加热水和热空气得到再次利用，节约了成本，防止对环境造成污染。In this preferred embodiment, two-stage heat exchangers are used, and the heated water and hot air obtained by the heat exchangers are reused, which saves costs and prevents pollution to the environment.
综上，本实用新型可以实现如下有益效果：In summary, the utility model can achieve the following beneficial effects:
1、降低锅炉排烟温度，提高锅炉的效率；1. Reduce boiler exhaust gas temperature and improve boiler efficiency;
2、提高进入锅炉的二次风温，提高锅炉的燃烧效率；2. Increase the temperature of the secondary air entering the boiler and improve the combustion efficiency of the boiler;
3、降低进入电除尘装置5的烟气温度，提高电除尘装置5的使用效率，降低电除尘装置5的耗电量；3. Reduce the temperature of the flue gas entering the electrostatic precipitator 5, improve the use efficiency of the electrostatic precipitator 5, and reduce the power consumption of the electrostatic precipitator 5;
4、通过抽取一部分的冷水和烟气换热，坚守冷凝水装置3(即电厂回热系统)中抽汽量，降低电厂的热耗率；利用烟气余热作为吸收式制冷机4的驱动热源，吸收式制冷机4输出冷量用来供应电厂内的所有冷负荷，降低电厂的厂用电率。4. By extracting part of the cold water and flue gas to exchange heat, stick to the amount of steam extracted in the condensate water device 3 (ie, the heat recovery system of the power plant), and reduce the heat consumption rate of the power plant; use the waste heat of the flue gas as the driving heat source of the absorption refrigerator 4 , the cooling capacity output by the absorption refrigerating machine 4 is used to supply all cooling loads in the power plant, reducing the power consumption rate of the power plant.
由技术常识可知，本实用新型可以通过其它的不脱离其精神实质或必要特征的实施方案来实现。因此，上述公开的实施方案，就各方面而言，都只是举例说明，并不是仅有的。所有在本实用新型范围内或在等同于本实用新型的范围内的改变均被本实用新型包含。It can be known from technical knowledge that the utility model can be realized through other implementations without departing from its spirit or essential features. Accordingly, the above-disclosed embodiments are, in all respects, illustrative and not exclusive. All changes within the scope of the utility model or within the range equivalent to the utility model are included in the utility model.
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| CN201510007428.3A Active CN104534450B (en) | 2014-08-28 | 2015-01-07 | A comprehensive utilization device for flue gas waste heat in a thermal power plant |
| CN201610815429.5A Active CN106247371B (en) | 2014-08-28 | 2015-01-07 | A comprehensive utilization device for flue gas waste heat in a thermal power plant |
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| CN104534450A (en) * | 2014-08-28 | 2015-04-22 | 国电龙源电力技术工程有限责任公司 | A comprehensive utilization device for flue gas waste heat in a thermal power plant |
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| CN105737123B (en) * | 2016-04-15 | 2017-10-13 | 中冶华天工程技术有限公司 | Blast furnace gas distributed energy resource system |
| CN108131656B (en) * | 2017-07-10 | 2024-03-15 | 昊姆（上海）节能科技有限公司 | Ultra-clean emission cold and hot co-production system of coking plant |
| CN107860022B (en) * | 2017-11-28 | 2023-10-24 | 西安交通大学 | A tube air preheater with variable flue cross section |
| CN111908686B (en) * | 2020-06-22 | 2021-10-08 | 西安交通大学 | Desulfurization wastewater zero-discharge system and method for deep utilization of flue gas waste heat |
| CN113623895B (en) * | 2021-07-01 | 2022-11-01 | 华电电力科学研究院有限公司 | Combined cooling heating and power system for cooling data center and control method thereof |
| CN114001558A (en) * | 2021-11-15 | 2022-02-01 | 南通山剑石墨设备有限公司 | Flue gas waste heat reutilization process device |
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| CN2632589Y (en) * | 2003-06-06 | 2004-08-11 | 天津大学 | Hot piping double-effect lithium bromide absorbing cold hot water apparatus with smoke waste heat drive |
| JP4959156B2 (en) * | 2004-11-29 | 2012-06-20 | 三菱重工業株式会社 | Heat recovery equipment |
| CN102313291A (en) * | 2010-06-30 | 2012-01-11 | 中国电力工程顾问集团华东电力设计院 | Two-stage smoke-gas-air heat-exchanger system applied to thermal power plant |
| CN202122897U (en) * | 2010-12-29 | 2012-01-25 | 西安交通大学 | Efficiency-increasing, energy-saving and emission-reducing comprehensive dedusting desulfurization device based on cooling of flue gas |
| CN202692114U (en) * | 2012-07-03 | 2013-01-23 | 自贡东联锅炉有限公司 | Horizontal type durable air preheater |
| CN202884971U (en) * | 2012-09-12 | 2013-04-17 | 河北省电力勘测设计研究院 | Air heating system utilizing waste smoke heat |
| JP6034154B2 (en) * | 2012-11-27 | 2016-11-30 | クボタ環境サ−ビス株式会社 | Waste heat recovery equipment, waste heat recovery method and waste treatment furnace |
| CN103017238B (en) * | 2012-12-25 | 2016-01-06 | 浙江工商大学 | Biomass electric power plant Waste Heat Recovery heating system |
| CN203489246U (en) * | 2013-06-13 | 2014-03-19 | 烟台龙源电力技术股份有限公司 | Boiler smoke waste-heat application system |
| CN203454172U (en) * | 2013-07-30 | 2014-02-26 | 浙江浙能镇海发电有限责任公司 | Intelligent flue gas soot automatic-blowing system |
| CN204438087U (en) * | 2014-08-28 | 2015-07-01 | 国电龙源电力技术工程有限责任公司 | A kind of coal steam-electric plant smoke comprehensive waste-heat utilizing device |
-
2015
- 2015-01-07 CN CN201520009067.1U patent/CN204438087U/en not_active Expired - Lifetime
- 2015-01-07 CN CN201510007428.3A patent/CN104534450B/en active Active
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534450A (en) * | 2014-08-28 | 2015-04-22 | 国电龙源电力技术工程有限责任公司 | A comprehensive utilization device for flue gas waste heat in a thermal power plant |
| CN104534450B (en) * | 2014-08-28 | 2016-10-26 | 国电龙源电力技术工程有限责任公司 | A comprehensive utilization device for flue gas waste heat in a thermal power plant |
Also Published As
| Publication number | Publication date |
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| CN106247371A (en) | 2016-12-21 |
| CN104534450A (en) | 2015-04-22 |
| CN106247371B (en) | 2018-12-28 |
| CN104534450B (en) | 2016-10-26 |
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