CN112902210A - Cold end heat exchange device for flue gas waste heat of thermal power station and control method - Google Patents

Cold end heat exchange device for flue gas waste heat of thermal power station and control method Download PDF

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Publication number
CN112902210A
CN112902210A CN202110289023.9A CN202110289023A CN112902210A CN 112902210 A CN112902210 A CN 112902210A CN 202110289023 A CN202110289023 A CN 202110289023A CN 112902210 A CN112902210 A CN 112902210A
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China
Prior art keywords
flue gas
cold
heat exchange
exchange device
heat transfer
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CN202110289023.9A
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Chinese (zh)
Inventor
李昭
赵如宇
李长海
郭云飞
谭祥帅
辛志波
宋晓辉
张向涛
刘冲
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Xian Thermal Power Research Institute Co Ltd
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Xian Thermal Power Research Institute Co Ltd
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Priority to CN202110289023.9A priority Critical patent/CN112902210A/en
Publication of CN112902210A publication Critical patent/CN112902210A/en
Pending legal-status Critical Current

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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
    • F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J11/00—Devices for conducting smoke or fumes, e.g. flues 
    • 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
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Chimneys And Flues (AREA)

Abstract

The invention discloses a cold-end heat exchange device for flue gas waste heat of a thermal power station and a control method, comprising a power station boiler, wherein flue gas generated after the power station boiler is combusted is connected with an air preheater through a denitration device, a flue gas outlet of the air preheater is connected with a dust remover through a low-temperature economizer, the flue gas outlet of the dust remover is connected with a desulfurizing device through an induced draft fan, the output end of the desulfurizing device is connected with a cold end heat exchange device through a flue gas adjusting baffle plate, the flue gas adjusting baffle is used for switching the cold end heat exchange device, the flue gas output end of the cold end heat exchange device is communicated with the flue gas tower, the cold junction heat transfer device flue gas output end is provided with cold junction heat transfer device check door, cold junction heat transfer device passes through water piping connection feedwater system water processing system, and the flue gas after the heat transfer among the cold junction heat transfer device passes through corresponding supplementary header and pipeline and gets into in the next grade flue. The invention has the advantages of simple structure, convenient operation and maintenance, energy saving, consumption reduction, thermal efficiency improvement of the thermal power generating unit and the like.

Description

Cold end heat exchange device for flue gas waste heat of thermal power station and control method
Technical Field
The invention relates to the technical field of raw water heat exchange of a thermal power station, in particular to a cold-end heat exchange device for flue gas waste heat of a thermal power station and a control method.
Background
In the prior art, the amount of flue gas after combustion of a boiler system of a thermal power station is huge, a low-temperature economizer is generally arranged from an air preheater to a flue in front of a desulfurizing tower for flue gas waste heat utilization, even if flue gas at an inlet of an absorption tower is reduced to 80-85 ℃ by heating unit condensed water or a primary air heater and a secondary air heater by utilizing the flue gas waste heat, the temperature of the flue gas discharged into the atmosphere through the desulfurizing absorption tower is still higher than the ambient temperature, the heat loss of the flue gas still accounts for the maximum proportion in several heat losses of the boiler, the temperature of the flue gas discharged in hot summer days is higher, the flue gas at the moment is subjected to regenerative utilization and related treatment, and belongs to a very clean heat source, and the waste of the heat source causes the loss of a large amount of flue. Meanwhile, with the popularization and application of a large number of membrane treatment technologies, in order to meet the strict process requirements of membrane treatment, a raw water heater is usually arranged at the inlet of the system, and when the raw water heater works, steam is introduced from a unit auxiliary steam header to heat raw water entering the boiler water supply system, so that the temperature of the raw water is maintained within the range of 25 +/-2 ℃ required by the membrane treatment, and high-quality steam is wasted. The influence of the temperature of the incoming water of the water supply and production system on the treatment result is very great, the phenomenon that the treatment result exceeds the standard due to the change of the water temperature often occurs in areas with large temperature difference in the morning and evening, and the original water volume is large, so that the incoming water is not suitable to be heated by adopting a high-quality steam heating mode or an electric heating mode.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the cold-end heat exchange device for the flue gas waste heat of the thermal power station and the control method, and the cold-end heat exchange device has the advantages of simple structure, convenience in operation and maintenance, energy conservation and consumption reduction, improvement on the thermal efficiency of a thermal power unit and the like.
In order to achieve the purpose, the invention adopts the technical scheme that:
a cold-end heat exchange device for flue gas waste heat of a thermal power station comprises a power station boiler 1, flue gas generated after combustion of the power station boiler 1 is connected with an air preheater 3 through a denitration device 2, a flue gas outlet of the air preheater 3 is connected with a dust remover 5 through a low-temperature coal economizer 4, the flue gas outlet of the dust remover 5 is connected with a desulphurization device 10 through an induced draft fan 6, the output end of the desulphurization device 10 is connected with a cold end heat exchange device 8 through a flue gas adjusting baffle 7, the flue gas adjusting baffle 7 is used for switching the cold end heat exchange device 8, the flue gas output end of the cold end heat exchange device 8 is communicated with a flue gas tower 11, 8 flue gas output ends of cold junction heat transfer device are provided with cold junction heat transfer device check door 9, cold junction heat transfer device 8 passes through outlet pipe 22 and connects water supply and water preparation processing system, and flue gas after the heat transfer has been accomplished in cold junction heat transfer device 8 passes through corresponding auxiliary header and pipeline and gets into in the next stage flue.
Cold junction heat transfer device 8 includes bottom header and multistage diverging device 13 that link to each other with flue gas damper 7, bottom header and multistage diverging device 13 are used for sending into cold junction heat transfer device 8 internal with the flue gas is even.
The multi-stage flow dividing device 13 has 36 branches in total and is annularly arranged at the bottom of the cold-end heat exchange device 8.
The multi-stage flow dividing device 13 is provided with a constant flow smoke distributor 14, and the constant flow smoke distributor 14 is of a damping structure.
Cold junction heat transfer device 8 passes through supporting structure 15 to be fixed on concrete structure platform, cold junction heat transfer device 8 and the welding of equal cigarette antivibration module 16, and equal cigarette antivibration module 16 is used for even cloth cigarette and with the raw water heat exchange, and equal cigarette antivibration module 16 is aperture metal framework.
And an overflow pipeline 18, a safety door 19, an emergency exhaust pipeline 21 and an emergency drainage pipeline 23 are arranged on the cold end heat exchange device 8.
The cold end heat exchange device 8 is provided with a rectification mist eliminator 20, and the rectification mist eliminator 20 is composed of an inner main pipeline and an outer surrounding pipeline and is of a snake-shaped structure.
A control method of a cold-end heat exchange device for flue gas waste heat of a thermal power station comprises the following steps;
the power station boiler 1 removes NO in flue gas through the flue gas generated after combustion by the denitration device 2XThen, through the heat transfer of air preheater 3, give primary air and overgrate air with a large amount of temperature exchanges through air preheater 3 in the flue gas, the flue gas of 3 exports of air preheater passes through low temperature economizer 4 and dust remover 5 again, the further utilization of waste heat and the dust removal of flue gas have been realized, rethread draught fan 6 is with the flue gas through the sulfur-containing material in the desulphurization unit 10 desorption flue gas, and then through flue gas damper 7, through the different operating condition who changes flue gas damper 7, the switching to cold junction heat transfer device 8 is realized, from system inscribe removal cold junction heat transfer device 8 when shutting down or overhauing, cold junction heat transfer device check door 9 can prevent the flue gas refluence under this operating mode and cause the influence when shutting down or overhauing cold junction heat transfer device 8.
When the cold end heat exchange device 8 is in a standby state, an operator receives an instruction of a responsible person, firstly, a branch control valve containing the cold end heat exchange device 8 is opened by switching a raw water supply pipeline, the middle liquid level of the liquid level in the cold end heat exchange device 8 in normal operation is well controlled, the operation is kept stable, then, according to the operation condition of a host smoke system, a smoke adjusting baffle 7 is thrown in a machine selection mode, a smoke inlet pipeline of the cold end heat exchange device 8 is opened slowly, a smoke bypass leading to a smoke tower 11 is closed slowly and synchronously, and hot smoke uniformly enters the cold end heat exchange device 8 through a multi-stage flow dividing device 13 and a constant flow smoke distributor 14;
in the normal operation process, the water temperature and the heat exchange efficiency of the inlet and the outlet are automatically regulated by a program, and when the heat exchange device 8 at the cold end is required to be stopped or protected;
firstly, cutting off a flue gas adjusting baffle 7, slowly opening a flue bypass leading to a smoke tower 11, synchronously and slowly closing a smoke inlet pipeline of a cold end heat exchange device 8, and sending a hot flue gas bypass into the smoke tower;
secondly switch over the raw water supply pipe way, will contain cold junction heat transfer device 8's branch control valve and close, the raw water bypass gets into water system, and cold junction heat transfer device 8 stops the machine for subsequent use, according to overhauing the work requirement, through opening exhaust pipe 21 and evacuation pipeline 23, further carries out pressure release and evacuation processing to cold junction heat transfer device 8.
The invention has the beneficial effects that:
by using the invention, the upper computer automatically controls each water pump and valve, so as to achieve the purpose of realizing the temperature exchange between the flue gas waste heat and the raw water, reduce the heat loss of the flue gas of the boiler, provide a stable heat source for a water supply and water production system and reduce the use of high-quality auxiliary steam. The cold-end heat exchange device for the flue gas waste heat of the thermal power station and the control method are stable, reliable, energy-saving and consumption-reducing.
Drawings
FIG. 1 is a schematic flow chart of the present invention.
Fig. 2 is a block diagram of a cold end heat exchange unit of the present invention.
FIG. 3 is a control flow diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the cold end heat exchange device for the flue gas waste heat of the thermal power station comprises a flue gas emission flow of the thermal power station, a cold end heat exchange device, and auxiliary matching equipment for raw water heat exchange and thermal compensation water supply pipelines.
Wherein, the power station fume emission process includes: the flue gas generated by the power station boiler 1 after combustion firstly passes through the denitration device 2 to remove NO in the flue gasXThen the waste heat is exchanged by the air preheater 3, a large amount of temperature in the flue gas is exchanged to primary air and secondary air by the air preheater 3, the flue gas at the outlet of the air preheater 3 passes through the low-temperature economizer 4 and the dust remover 5, and the waste heat is realizedFurther utilizing the dust removal with the flue gas. The sulfur-containing substances in the flue gas are removed from the flue gas through the desulfurization device 10 through the induced draft fan 6, then the flue gas adjusting baffle 7 is passed through, the switching of the cold end heat exchange device 8 is realized through changing different working states of the flue gas adjusting baffle 7, the cold end heat exchange device 8 is removed from the system in the shutdown or maintenance process, and the cold end heat exchange device check door 9 can prevent the flue gas from flowing backwards to influence the cold end heat exchange device 8 in the shutdown or maintenance process under the working condition. In the cold end heat exchange device 8, the residual flue gas temperature is fully utilized and then discharged to the atmosphere through the flue gas tower 11. Meanwhile, all flues and equipment are subjected to sufficient anticorrosion treatment so as to prevent flue corrosion caused by acidic substances in the flue gas.
The supplementary corollary equipment of raw water heat transfer and thermal compensation water supply line includes: raw water lift pump, cold end inlet valve and corresponding pipeline.
Referring to fig. 2, through the input of the cold end heat exchange device 8 of the regulation of the flue gas regulation baffle 7, the flue gas can be uniformly sent into the cold end heat exchange device 8 through the bottom header and the multi-stage flow distribution device 13, and the multi-stage flow distribution device 13 has 36 branches in total and is arranged at the bottom of the cold end heat exchange device 8 in a multi-ring shape. The constant flow smoke distributor 14 is a damping structure, has a certain compressive resistance, needs to be strictly calibrated through a specific technical means before being used for the first time, and can play a role in preventing the deviated flow smoke distribution when being used with the multistage flow dividing device 13. The cold-end heat exchange device 8 is fixed on the concrete structure platform through a supporting structure 15, and meanwhile, the supporting structure 15 also plays a role in protecting and preventing vibration. Evenly entering into cold junction heat transfer device 8 internal at the flue gas through multistage diverging device 13 and balanced stream distributor 14, equal cigarette antivibration module 16 is aperture diameter metal framework, and is in the same place through welding zonulae occludens with cold junction heat transfer device 8, on multistage diverging device 13 and balanced stream distributor 14's basis, through equal cigarette antivibration module 16, further can play even cloth cigarette and with the effect of raw water heat exchange. When the equipment is overhauled, the accessible inspection manhole door 17 gets into 8 internal maintenance overhauls to equipment of cold junction heat transfer device. The overflow pipeline 18 and the safety door 19 can protect the cold end heat exchange device 8 when the equipment is in an abnormal operation state, so that accidents can be prevented. Rectification mist eliminator 20 comprises inside main line and outside surrounding type pipeline, is snakelike structure, and the raw water gets into cold junction heat transfer device 8 internal through outside surrounding type pipeline, and the flue gas after the bottom heat transfer has been accomplished is through inside main line and the further indirect surface contact heat transfer of raw water, and simultaneously, the water smoke that the flue gas was taken out gets back to cold junction heat transfer device 8 internal again after through the condensation. When the maintenance or the equipment is stopped, the emergency exhaust pipeline 21 and the emergency drainage pipeline 23 can be opened to vent the pressure and the water stored in the equipment. After the heat exchange is finished, the raw water is sent into the water supply and production treatment system from the water outlet pipe 22 of the cold-end heat exchange device 8. And the flue gas after heat exchange enters the next-stage flue through the corresponding auxiliary header and the pipeline. The equipment system and the accessory equipment are subjected to corresponding anticorrosion treatment.
Referring to fig. 1, the auxiliary corollary equipment of the raw water heat exchange and thermal compensation water supply pipeline comprises: a raw water lift pump 12 and corresponding cold end inlet valve check valves and corresponding tank lines.
Referring to fig. 3, cold junction heat transfer device 8 is when stopping standby state, and the person of charge's instruction is received to the operation personnel, at first through switching raw water supply pipe, will contain cold junction heat transfer device 8's branch control valve and open, controls the middle liquid level that cold junction heat transfer device 8 internal liquid level was in normal operating and keeps the operation stable, then according to host computer flue gas system behavior, selects the machine to drop into flue gas damper 7. The smoke inlet pipeline of the cold-end heat exchange device 8 is slowly opened, the flue bypass leading to the smoke tower 11 is synchronously and slowly closed, and hot smoke uniformly enters the cold-end heat exchange device 8 through the multistage flow dividing device 13 and the constant flow smoke distributor 14. In the normal operation process, the water temperature of the inlet and the outlet and the heat exchange efficiency are automatically adjusted by a program. When the heat exchange device 8 at the cold end needs to be shut down or protected, the flue gas adjusting baffle 7 is cut off firstly. And slowly opening a flue bypass leading to the smoke tower 11, synchronously and slowly closing a smoke inlet pipeline of the cold-end heat exchange device 8, and sending the hot smoke bypass into the smoke tower. And then switching a raw water supply pipeline, closing a branch control valve containing the cold-end heat exchange device 8, enabling a raw water bypass to enter a water supply and production system, and stopping the cold-end heat exchange device 8 for later use. According to the maintenance work requirement, the pressure relief and the emptying of the cold end heat exchange device 8 are further carried out by opening the exhaust pipeline 21 and the emptying pipeline 23.
The upper computer automatically adjusts the temperature measuring points on line through the upper computer, and the heat exchange device is regularly maintained.

Claims (9)

1. The utility model provides a thermal power station flue gas waste heat cold junction heat transfer device, its characterized in that includes power boiler (1), and the flue gas that produces after power boiler (1) burning passes through denitrification facility (2) and connects air preheater (3), and the exhanst gas outlet of air preheater (3) passes through low temperature economizer (4) and links to each other with dust remover (5), the exhanst gas outlet of dust remover (5) passes through draught fan (6) and connects desulphurization unit (10), desulphurization unit (10) output passes through flue gas adjusting baffle (7) and connects cold junction heat transfer device (8), flue gas adjusting baffle (7) are used for realizing the cold junction to cold junction heat transfer device (8) switching cold junction heat transfer device (8), cold junction heat transfer device (8) flue gas output end intercommunication smoke tower (11), cold junction heat transfer device (8) flue gas output end is provided with cold junction heat transfer device check door (9), cold junction heat transfer device (8) are connected feedwater system of making water processing through outlet pipe (, and the flue gas after heat exchange in the cold end heat exchange device (8) enters the next stage of flue through the corresponding auxiliary header and the pipeline.
2. The cold end heat exchange device for the flue gas waste heat of the thermal power station as claimed in claim 1, wherein the cold end heat exchange device (8) comprises a bottom header and a multi-stage flow dividing device (13) connected with the flue gas adjusting baffle (7), and the bottom header and the multi-stage flow dividing device (13) are used for uniformly feeding the flue gas into the cold end heat exchange device (8).
3. The cold end heat exchange device for flue gas waste heat of the thermal power station as claimed in claim 2, wherein a total of 36 multi-stage flow dividing devices (13) are annularly arranged at the bottom of the cold end heat exchange device (8).
4. The cold-end heat exchange device for flue gas waste heat of the thermal power station as recited in claim 2, wherein the multi-stage flow dividing device (13) is provided with a constant flow smoke distributor (14), and the constant flow smoke distributor (14) is of a damping structure.
5. The cold-end heat exchange device for flue gas waste heat of the thermal power station according to claim 1, wherein the cold-end heat exchange device (8) is fixed on a concrete structure platform through a supporting structure (15), the cold-end heat exchange device (8) is welded with a smoke-homogenizing anti-vibration module (16), the smoke-homogenizing anti-vibration module (16) is used for uniformly distributing smoke and exchanging heat with raw water, and the smoke-homogenizing anti-vibration module (16) is a small-aperture metal framework.
6. The cold end heat exchange device for flue gas waste heat of the thermal power station according to claim 1, wherein an overflow pipeline (18), a safety door (19), an emergency exhaust pipeline (21) and an emergency drainage pipeline (23) are arranged on the cold end heat exchange device (8).
7. The cold end heat exchange device for flue gas waste heat of the thermal power station as claimed in claim 1, wherein the cold end heat exchange device (8) is provided with a rectification mist eliminator (20), and the rectification mist eliminator (20) is composed of an inner main pipeline and an outer surrounding pipeline and is of a serpentine structure.
8. The control method of the cold end heat exchange device for the flue gas waste heat of the thermal power station is characterized by comprising the following steps of;
the power station boiler (1) removes NO in flue gas through the flue gas generated after combustion by a denitration device (2)XThen, through air preheater (3) heat transfer, give air and overgrate air through air preheater (3) exchange with a large amount of temperatures in the flue gas, the flue gas of air preheater (3) export passes through low temperature economizer (4) and dust remover (5) again, the further utilization of waste heat and the dust removal of flue gas have been realized, rethread draught fan (6) detach the sulfur-containing material in the flue gas with the flue gas through desulphurization unit (10), and then through flue gas adjusting damper (7), through the different work that changes flue gas adjusting damper (7)The state realizes the switching to cold junction heat transfer device (8), removes cold junction heat transfer device (8) from the system inscribe when shutting down or overhauing, and cold junction heat transfer device check door (9) can prevent the flue gas refluence and lead to the fact the influence when shutting down or overhauing cold junction heat transfer device (8) under this operating mode.
9. The control method of the cold-end heat exchange device using the flue gas waste heat of the thermal power station as claimed in claim 9 is characterized in that when the cold-end heat exchange device (8) is in a standby state, an operator receives an instruction of a responsible person, firstly, a branch control valve containing the cold-end heat exchange device (8) is opened by switching a raw water supply pipeline, the liquid level in the cold-end heat exchange device (8) is controlled to be at an intermediate liquid level during normal operation, the operation is kept stable, then, according to the operation condition of a main engine flue gas system, a flue gas adjusting baffle (7) is put into a machine selection mode, a flue gas inlet pipeline of the cold-end heat exchange device (8) is opened slowly, a flue bypass leading to a flue tower (11) is closed slowly and synchronously, and hot flue gas uniformly enters the cold-end heat exchange device (8) through a multi-stage flow;
in the normal operation process, the water temperature and the heat exchange efficiency of the inlet and the outlet are automatically regulated by a program, and when the heat exchange device (8) at the cold end is required to be stopped or protected;
firstly, cutting off a flue gas adjusting baffle (7), slowly opening a flue bypass leading to a smoke tower (11), synchronously and slowly closing a smoke inlet pipeline of a cold end heat exchange device (8), and sending a hot flue gas bypass into the smoke tower;
secondly switch the raw water supply pipe, close the branch control valve that will contain cold junction heat transfer device (8), raw water bypass gets into water system, and cold junction heat transfer device (8) are shut down for subsequent use, according to overhauing the work requirement, through opening exhaust pipe (21) and unloading pipeline (23), further carry out pressure release and unloading to cold junction heat transfer device (8) and handle.
CN202110289023.9A 2021-03-18 2021-03-18 Cold end heat exchange device for flue gas waste heat of thermal power station and control method Pending CN112902210A (en)

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CN202110289023.9A CN112902210A (en) 2021-03-18 2021-03-18 Cold end heat exchange device for flue gas waste heat of thermal power station and control method

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114768523A (en) * 2022-03-31 2022-07-22 西安热工研究院有限公司 SCR full-load denitration system of thermal generator set

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114768523A (en) * 2022-03-31 2022-07-22 西安热工研究院有限公司 SCR full-load denitration system of thermal generator set

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