CN111482085A - Desulfurization and denitrification dust removal system based on heat supply of waste heat of flue gas of biomass boiler - Google Patents
Desulfurization and denitrification dust removal system based on heat supply of waste heat of flue gas of biomass boiler Download PDFInfo
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- CN111482085A CN111482085A CN202010305966.1A CN202010305966A CN111482085A CN 111482085 A CN111482085 A CN 111482085A CN 202010305966 A CN202010305966 A CN 202010305966A CN 111482085 A CN111482085 A CN 111482085A
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 239000003546 flue gas Substances 0.000 title claims abstract description 70
- 239000002028 Biomass Substances 0.000 title claims abstract description 30
- 239000000428 dust Substances 0.000 title claims abstract description 24
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 19
- 230000023556 desulfurization Effects 0.000 title claims abstract description 19
- 239000002918 waste heat Substances 0.000 title claims abstract description 10
- 238000005453 pelletization Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 9
- 230000001172 regenerating effect Effects 0.000 abstract description 6
- 238000010531 catalytic reduction reaction Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 230000008929 regeneration Effects 0.000 abstract 1
- 238000011069 regeneration method Methods 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 7
- 239000003054 catalyst Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 239000000779 smoke Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/90—Injecting reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8603—Removing sulfur compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
-
- 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
- F23J15/006—Layout of treatment plant
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/10—Nitrogen; Compounds thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/20—Sulfur; Compounds thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2219/00—Treatment devices
- F23J2219/10—Catalytic reduction devices
-
- 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)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
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Abstract
A desulfurization, denitrification and dust removal system based on heat supply of waste heat of flue gas of a biomass boiler integrates an integrated process of a boiler flue gas heating system, an air heating system, a desulfurization and dust removal system, a low-temperature SCR (selective catalytic reduction) denitration system and a heat regeneration system, so that the biomass boiler reaches an ultralow emission standard. The invention is characterized in that the flue gas at the outlet of an economizer is sequentially connected with an SCR flue gas heater, an air preheater, a desulfurization dust removal device and an induced draft fan, the outlet of the induced draft fan is connected with the inlet of the low-temperature end of a regenerative flue gas heater (GGH), the outlet of the low-temperature end of the GGH is sequentially connected with the SCR flue gas heater and a low-temperature SCR denitration device, the outlet of the low-temperature SCR denitration device is connected with the inlet of the high-temperature end of the GGH, and the outlet of the high-temperature end. The invention has the advantages that the waste heat of the boiler flue gas is utilized, the boiler efficiency is ensured, and the ultralow NOX emission is realized; the heat exchanger, the air preheater and the desulfurization, denitrification and dust removal system are integrated; various furnace types of biomass can be applied; the ultralow emission under all operating conditions is ensured; the existing mature technology integrates innovation.
Description
Technical Field
The invention belongs to the field of power generation of biomass boilers, and particularly relates to a process system for realizing ultralow emission of flue gas of a biomass boiler by improving a flue gas pollutant treatment system of the biomass boiler.
Background
The national standard for biomass boiler NOx emission stipulates that the emission is 100 mg/standard cubic meter, and the low-temperature staged combustion low-NOx technology, the in-furnace selective non-catalytic reduction (SNCR) technology and the like are adopted at present to meet the standard requirements. Due to the vigorous development of green energy, the pollutant emission of the biomass boiler is increasingly increased, and the emission of the biomass boiler is regulated by environmental protection departments of provinces, cities and autonomous regions in China to execute the ultralow emission standard of the coal-fired boiler according to the emission reference, namely that the NOX emission is 50 mg/standard cubic meter. Due to the basic characteristics of low-temperature combustion, the biomass boiler is reliable when the primary NOx index reaches 100 mg/standard cubic meter by adopting low-NOx combustion technologies such as layered classification and flue gas recirculation, but the full-working-condition denitration efficiency reaches 50% under the condition that the SNCR in the boiler is required to be at the low-temperature combustion smoke temperature of 600-750 ℃ and is separated from a normal reduction reaction temperature window (above 850 ℃), and the ultra-low emission is not possible. At present, several environmental protection units in China develop technologies based on SNCR additives, try to influence and change the temperature window of chemical reaction, and at the test stage, whether reducing inorganic matters are sprayed into a hearth to react with high-temperature metal or not has no practical evidence at present. And in addition, some projects apply an oxidation denitration technology, which is essentially characterized in that under the condition that nitrogen oxides increased by boiler combustion are strictly removed, the total amount of the nitrogen oxides is increased by continuous oxidation, dangerous chemicals such as nitrates and the like are generated, an aftertreatment system is complex, the investment of the project is greatly increased, and the technical and economic risks are increased.
By combining the analysis, the denitration ultra-clean emission of the biomass boiler is limited to a widely applied Selective Catalytic Reduction (SCR) technology at present. The SCR reactor of the conventional coal-fired unit is arranged in front of the air preheater, and the high reaction efficiency is realized by utilizing the high reaction temperature of the SCR reactor, so that the SCR reactor is widely applied to the coal-fired unit. For a biomass boiler, the content of alkali metal in the fly ash is very high, the activity of the catalyst is seriously influenced, meanwhile, the fly ash seriously blocks the pores of the catalyst, and the application of a front-mounted SCR system is not suitable, the SCR system is necessarily arranged at the rear part of a desulfurization and dust removal device, and the reliability of the catalyst is ensured under the condition of clean flue gas. At present, the domestic low-temperature SCR technology is rapidly advanced, the dust content and the sulfur content of the clean flue gas after denitration and dust removal are very low, most heavy metals are also removed, the operation condition of the catalyst is very good, and the denitration efficiency can be ensured at a lower temperature (200-230 ℃). However, the post-positioned low-temperature SCR denitration system has a serious defect that the temperature of flue gas is very low after desulfurization and dust removal, and is generally not more than 85 ℃. Although a regenerative technology can be adopted, the temperature rise of the flue gas at the inlet of the NOX reactor also needs to reach more than 30 ℃, and if the flue gas is supplied by a power generation steam-water system, the heat economy of a unit is greatly reduced. The main mode of the traditional domestic biomass boiler postposition low-temperature SCR denitration meeting the temperature window is natural gas combustion heat compensation, the natural gas acquisition mode is difficult, the operation cost is higher, the economy of a biomass unit is seriously influenced, and only a few biomass units in the developed area of the southeast coastal economy have high electricity price and large industrial gas consumption and adopt the afterburning mode.
Disclosure of Invention
The invention aims to solve the problem of energy supply of a rear low-temperature SCR denitration system inevitably selected by ultra-clean emission of a biomass boiler, and realizes ultra-low NOX emission and utilization of waste heat of boiler flue gas on the basis of ensuring boiler efficiency.
In order to achieve the purpose, the invention provides a desulfurization, denitrification and dust removal system based on heat supply of flue gas waste heat of a biomass boiler, which is characterized in that: including SCR flue gas heater, air heater, desulfurization dust collector, backheat flue gas heater, low temperature SCR denitrification facility, the draught fan, pressure boost flue gas fan, economizer export flue gas connects gradually SCR flue gas heater, air heater, desulfurization dust collector, the draught fan, draught fan exit linkage backheat flue gas heater low temperature end entry, backheat flue gas heater low temperature end export connects gradually SCR flue gas heater, low temperature SCR denitrification facility exit linkage backheat flue gas heater high temperature end entry, backheat flue gas heater high temperature end exit linkage pressure boost flue gas fan and chimney.
The inlet flue gas temperature of the low-temperature SCR denitration device is more than 200 ℃.
1. According to the invention, under the condition that the biomass boiler ensures that the efficiency is not changed, the utilization of the tail flue gas waste heat is realized, the temperature requirement of the low-temperature SCR system denitration is met, and the higher denitration efficiency is ensured.
2. Integration boiler air heating system and SOx/NOx control dust pelletizing system reduce with the cross fit of boiler body system, and is the same with the effect of original boiler performance guarantee scope.
3. The applicable biomass boiler has various types and can realize the ultralow emission of NOX.
4. The ultra-low NOx emission index of the biomass boiler under all operating conditions is met.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
Referring to fig. 1, the embodiment of the invention comprises an SCR flue gas heater, an air preheater, a desulfurization dust removal device, a regenerative flue gas heater, a low-temperature SCR denitration device, an induced draft fan and a pressurized flue gas fan, wherein flue gas at the outlet of an economizer is sequentially connected with the SCR flue gas heater, the air preheater, the desulfurization dust removal device and the induced draft fan, the outlet of the induced draft fan is connected with the inlet of the low-temperature end of the regenerative flue gas heater, the outlet of the low-temperature end of the regenerative flue gas heater is sequentially connected with the SCR flue gas heater and the low-temperature SCR denitration device, the outlet of the low-temperature SCR denitration device is connected with the inlet of the high-temperature end of.
Because the low-temperature SCR denitration device is arranged behind the desulfurization and dust removal system with ultralow emission, the catalyst has good running environment, the activity of the catalyst is ensured, the denitration efficiency is higher at about 230 ℃, and the ultralow emission of NOX can be met. The regenerative flue gas heater (GGH) can heat the flue gas at the outlet of the desulfurization and dust removal device to about 200 ℃ from 80-85 ℃ by utilizing the favorable condition of higher temperature of the flue gas at the outlet of the low-temperature SCR denitration device, and the temperature rise of the inlet flue gas of the low-temperature SCR denitration device, which needs heat compensation, is only 30 ℃. The temperature of flue gas at the outlet of a biomass boiler economizer is generally 260-280 ℃, an SCR flue gas heater is additionally arranged, sufficient heat exchange end difference is achieved, the temperature of the flue gas at the outlet of a GGH can be heated to 230 ℃ from 200 ℃, and the denitration efficiency of the low-temperature SCR denitration device is guaranteed. The temperature of the flue gas at the inlet of the low-temperature SCR denitration is increased by 30 ℃, and the temperature of the flue gas at the outlet of the economizer is reduced by about 30 ℃ in the SCR flue gas heater due to the equivalent total amount of the flue gas, namely the temperature is reduced from 260-280 ℃ to 230-250 ℃. The outlet air temperature of the biomass boiler air preheater is 180-200 ℃, the outlet smoke temperature of the NOX smoke heater meets the heat exchange condition in the air preheater, and the outlet air temperature requirement of the air preheater can be guaranteed. In a similar way, the exhaust gas temperature of the biomass boiler is reduced by about 110-120 ℃ from the generally higher temperature of 140-150 ℃, lower temperature emission is realized, and the exhaust gas loss of the boiler is reduced. Like this, set up NOX flue gas heater through the economizer export and guarantee low temperature SCR denitrification facility entry temperature, maintain higher denitration efficiency, realize NOX minimum emission, air heater maintains original boiler hot-blast temperature unchangeable simultaneously, and boiler exhaust gas temperature reduces about 30 ℃, makes boiler efficiency guarantee, has realized the utilization of ultralow NOX emission and boiler flue gas waste heat.
The conventional biomass boiler body comprises an air preheater, the smoke emission boundary of boiler performance guarantee is air preheater outlet smoke, and the air inlet boundary is a fan inlet. This application is for guaranteeing engineering project in time to use, reduces the cross fit with boiler body system, and the fume emission border of stipulating the boiler supply range is low temperature economizer exhanst gas outlet, and the air admission border is furnace air inlet, and this is convenient to realize in engineering project, and the energy meter that low temperature economizer export flue gas carried is listed as the loss, and the energy meter that furnace inlet air carried is listed as the income, and the effect with original boiler performance guarantee range is the same. Including the SCR flue gas heater who guarantees low temperature SCR denitrification facility entry gas temperature and the air heater who guarantees furnace entry air temperature in this application system, still include conventional desulfurization dust pelletizing system and low temperature SCR denitrification facility and backheating system simultaneously.
The biomass boiler furnace type that this application is suitable for is various, all can realize NOX minimum emission. Because the primary NOX of low-temperature combustion of the circulating fluidized bed boiler is low, the low-temperature SCR denitration device adopts low operation temperature, and the denitration efficiency reaches 50 percent, so that the environment-friendly ultralow emission requirement can be met. Aiming at the grate boiler with wide fuel adaptability and reliable operation, as the primary NOx is higher to 400 mg/standard cubic meter, the invention ensures that the inlet smoke temperature of the low-temperature SCR denitration device is over 230 ℃, the denitration efficiency reaches 90 percent, and the ultralow emission of the NOx can be achieved.
This application can utilize the economizer flue bypass of boiler body, improves economizer export flue gas temperature when the boiler low-load operation, guarantees low temperature SCR denitrification facility's denitration efficiency, reaches the ultralow emission of full operating mode NOX.
Various devices in the system are conventional products and are widely applied. The ultralow emission of biomass boiler NOX is realized to this application, is boiler heat transfer system and SOx/NOx control dust pelletizing system's integrated innovation.
Claims (2)
1. The utility model provides a SOx/NOx control dust pelletizing system based on heat supply of biomass boiler flue gas waste heat which characterized in that: including SCR flue gas heater, air heater, desulfurization dust collector, backheat flue gas heater, low temperature SCR denitrification facility, the draught fan, pressure boost flue gas fan, economizer export flue gas connects gradually SCR flue gas heater, air heater, desulfurization dust collector, the draught fan, draught fan exit linkage backheat flue gas heater low temperature end entry, backheat flue gas heater low temperature end export connects gradually SCR flue gas heater, low temperature SCR denitrification facility exit linkage backheat flue gas heater high temperature end entry, backheat flue gas heater high temperature end exit linkage pressure boost flue gas fan and chimney.
2. The desulfurization, denitrification and dust removal system based on heat supply by waste heat of flue gas of biomass boiler according to claim 1, characterized in that: the inlet flue gas temperature of the low-temperature SCR denitration device is more than 200 ℃.
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| CN202010305966.1A CN111482085A (en) | 2020-04-17 | 2020-04-17 | Desulfurization and denitrification dust removal system based on heat supply of waste heat of flue gas of biomass boiler |
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| CN202010305966.1A CN111482085A (en) | 2020-04-17 | 2020-04-17 | Desulfurization and denitrification dust removal system based on heat supply of waste heat of flue gas of biomass boiler |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113915633A (en) * | 2021-11-17 | 2022-01-11 | 西安热工研究院有限公司 | System for adjusting SCR inlet smoke temperature and control method |
| CN114210199A (en) * | 2021-11-30 | 2022-03-22 | 中冶南方都市环保工程技术股份有限公司 | Flue gas treatment system of biomass power plant |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105169942A (en) * | 2015-09-23 | 2015-12-23 | 广州创能环保科技有限公司 | Glass melting furnace flue gas dust removal, desulfurization and denitrification cooperative treatment system and treatment method and application |
| CN108159858A (en) * | 2018-01-11 | 2018-06-15 | 江苏联慧资源环境科技有限公司 | A kind of boiler kiln gas purification technique |
| CN212549031U (en) * | 2020-04-17 | 2021-02-19 | 中国电力工程顾问集团东北电力设计院有限公司 | Desulfurization and denitrification dust removal system based on heat supply of waste heat of flue gas of biomass boiler |
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2020
- 2020-04-17 CN CN202010305966.1A patent/CN111482085A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105169942A (en) * | 2015-09-23 | 2015-12-23 | 广州创能环保科技有限公司 | Glass melting furnace flue gas dust removal, desulfurization and denitrification cooperative treatment system and treatment method and application |
| CN108159858A (en) * | 2018-01-11 | 2018-06-15 | 江苏联慧资源环境科技有限公司 | A kind of boiler kiln gas purification technique |
| CN212549031U (en) * | 2020-04-17 | 2021-02-19 | 中国电力工程顾问集团东北电力设计院有限公司 | Desulfurization and denitrification dust removal system based on heat supply of waste heat of flue gas of biomass boiler |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113915633A (en) * | 2021-11-17 | 2022-01-11 | 西安热工研究院有限公司 | System for adjusting SCR inlet smoke temperature and control method |
| CN114210199A (en) * | 2021-11-30 | 2022-03-22 | 中冶南方都市环保工程技术股份有限公司 | Flue gas treatment system of biomass power plant |
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