CN106765035A - Improve SCR temperature of reactor system and device and method - Google Patents

Improve SCR temperature of reactor system and device and method Download PDF

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Publication number
CN106765035A
CN106765035A CN201611095919.9A CN201611095919A CN106765035A CN 106765035 A CN106765035 A CN 106765035A CN 201611095919 A CN201611095919 A CN 201611095919A CN 106765035 A CN106765035 A CN 106765035A
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China
Prior art keywords
temperature
scr
boiler
reactor inlet
raising
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Pending
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CN201611095919.9A
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Chinese (zh)
Inventor
吴景兴
马金凤
高玉新
王文生
袁德权
蒋翀
谭袖
李彦龙
孙伟
宋阳
张海楠
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Huadian Eletric Power Research Institute Dongbei Branch
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Huadian Eletric Power Research Institute Dongbei Branch
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Priority to CN2015210506062 priority Critical
Priority to CN201521050606 priority
Application filed by Huadian Eletric Power Research Institute Dongbei Branch filed Critical Huadian Eletric Power Research Institute Dongbei Branch
Publication of CN106765035A publication Critical patent/CN106765035A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22DPREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D1/00Feed-water heaters, i.e. economisers or like preheaters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22GSUPERHEATING OF STEAM
    • F22G3/00Steam superheaters characterised by constructional features; Details of component parts thereof
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/02Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material

Abstract

One kind improves SCR temperature of reactor system and devices, including boiler reversal chamber and economizer, it is characterised in that:The SCR reactor inlet flues of two bypass ducts to economizer exit are accessed at boiler reversal chamber.The system extracts the moderate oven cigarette close to 510 DEG C ~ 550 DEG C from boiler reversal chamber using the pressure difference formed between boiler difference heating surface when running, and is divided into 2 bypass ducts, and connection enters the SCR reactor inlet flues of economizer exit.No more than 10% of total exhaust gas volumn under the load, extraction amount is relatively adapted to the exhaust gas volumn of extraction, little on boiler feedwater and the influence of main reheat steam temperature.

Description

Improve SCR temperature of reactor system and device and method
Technical field
SCR temperature of reactor system and device and method are improved the present invention relates to one kind.
Background technology
European countries are relatively advanced in thermoelectricity flexibility technology, and Denmark's fired power generating unit is substantially cogeneration units, Winter heat supply phase minimum load can as little as 15%-20%, German cogeneration units can as little as 40%;German pure condensate is coal-fired Machine set technology is exerted oneself can as little as 25%.
Nationwide generator installations in 2015 and generated energy statistics understand that combustion engine installation in 2015 only has 4.4%, and generate electricity ratio Example 3%, water-storage installation accounts for 1.5%, generated energy 0.3% with wind-powered electricity generation 3.3% almost, with wind-powered electricity generation not in an order of magnitude, And the construction period is long.Chemical accumulation of energy does not have large scale business also.The energy resource structure of China is still based on thermoelectricity.
By the statistics in the end of the year 2014, the coal unit of 300,000 multikilowatts has 880, and 600,000 multikilowatts have 481
Platform, it is about 700,000,000 kilowatts that both install, and is main force's unit of coal electricity flexibility transformation.
With the adjustment of China's energy policy, fuel gas generation, water-storage, the present situation ratio of other novel energy-storings add up to not More than 5%, and larger change is hardly resulted within the following regular period, as the coal electricity of " three Norths " area main force power supply, To be played a significant role in the lifting of power system peak modulation capacity after flexibility transformation, the time that fired power generating unit participates in peak regulation is more next More, large-sized station boiler often participates in peak regulation, and run has turned into a kind of normality at low load.
In order to reduce NOXDischarge, boiler improvement is low NO+SCR, using hydrolysis of urea Ammonia Process.With catching fire Group of motors participate in peak regulation time it is more and more, boiler runs at low load for a long time, often 35%THA~40%THA it Between, SCR reactor inlet cigarettes temperature is less than 300 DEG C, a large amount of ammonia is not only wasted at this temperature and has a strong impact on out of stock efficiency, NOXDischarge Value is exceeded, and discharge value is up to 400mg/Nm3More than, it is impossible to meet environmental requirement.Even it is forced to receive fine, to enterprise, society Cause economic loss and social influence.Therefore, out of stock device portal flue-gas temperature is relatively low as urgently under how solving underload The problem of solution.
The content of the invention
Goal of the invention:
The present invention provides a kind of raising SCR temperature of reactor system and device and method, the purpose is to be directed to large-scale power station machine The group long-term underrun of boiler, SCR inlet cigarette temperature is relatively low, has a strong impact on its efficiency, it is impossible to meet the problem of environmental requirement.
Technical scheme:
Improve SCR temperature of reactor system and devices, including boiler reversal chamber and economizer, it is characterised in that:Turn in boiler To the SCR reactor inlet flues that two bypass ducts to economizer exit are accessed at room.
Two bypass ducts use circular pipe.
The valve of controlling switch is provided with pipeline, the valve is controlled by boiler DCS, while SCR reactors The temperature sensor of entrance also accesses boiler DCS.
Anti-air-leakage locking device is additionally provided with the joining place of bypass duct and SCR reactor inlet flues, the device bag Include compression button and Strain lock;The leakage proof gasket for compressing shell fragment and being pressed on pipeline joining place is provided with compression button, shell fragment is compressed Withstand between compression button and leakage proof gasket;Strain lock includes tensing arm and turnbuckle, tenses arm and is divided into upper and lower two, upper tension arm It is buckled in compress by hook and connection is realized in the groove for buckling wall, the lower arm that tenses is buckled in the groove for compressing and detaining wall also by hook It is interior realize connection, it is upper tension arm and lower tension arm between by connect thick stick connect, turnbuckle through connection thick stick and be connected thick stick Threaded connection.
The side of the raising SCR reactor inlet cigarette temperature implemented using above-mentioned raising SCR temperature of reactor system and devices Method, it is characterised in that:The method is turned from boiler at low load using the pressure difference formed between boiler difference heating surface when running To the moderate oven cigarette that 510 DEG C~550 DEG C are extracted at room, it is divided into 2 circular pipes, the SCR that connection enters economizer exit reacts Device gas approach, when SCR reactor inlet cigarettes temperature is less than 320 DEG C, opens middle temperature flue gas system, after being re-mixed with main flue gas 20 DEG C~30 DEG C of SCR inlet cigarette temperature is improved, SCR reactors is normally put at low load, improve out of stock efficiency, meet environmental protection Index.
The pressure formed between 2 grades of heating surfaces of reversal chamber and low temperature superheater and economizer when the method utilizes boiler operatiopn Difference, the temperature difference, about 550 DEG C of moderate oven cigarette is extracted from boiler reversal chamber, and connection respectively enters the SCR reactors of economizer exit Gas approach, after the flue gas with relatively low temperature is re-mixed, catalyst optimal reaction temperature is not less than 320 DEG C, improves de- Pin efficiency.
The selection for extracting position must be provided simultaneously with following condition:The flue gas pressures for extracting position are high to provide enough Exhaust gas volumn;Extracting the Gas Parameters of position has the requirement of higher temperature.
10% of the exhaust gas volumn of extraction no more than total exhaust gas volumn under the load.
Two circular pipes use the φ 1300mm circular pipes of 12Cr1MoV.
Circular pipeline is unilateral to use 2 road Valve controllings, wherein 1 is shutoff door, another 1 is regulation door.
Advantage and effect:
The present invention is a kind of method and device of raising SCR reactor inlet cigarette temperature.It is long for large-scale power station unit boiler Phase underrun, SCR inlet cigarette temperature is relatively low, has a strong impact on its efficiency, it is impossible to meet the problem of environmental requirement, proposes that one kind is carried SCR reactor inlets cigarette temperature system and device high.The system utilizes the pressure difference formed between boiler difference heating surface when running, from pot The moderate oven cigarette close to 510 DEG C~550 DEG C is extracted at stove reversal chamber, is divided into 2 bypass ducts, connection enters economizer exit SCR reactor inlet flues.No more than 10% of total exhaust gas volumn under the load, extraction amount is relatively adapted to the exhaust gas volumn of extraction, to pot Stove feeds water and the influence of main reheat steam temperature is little.
Brief description of the drawings
Fig. 1 is structural representation of the invention;
Fig. 2 is Anti-air-leakage locking device structure schematic diagram;
Fig. 3 is the left view of Fig. 2;
Each position positive/negative-pressure distribution map in cigarette air channel when Fig. 4 is balanced draft.
8 is low-temperature reheater in Fig. 1, and 9 is low temperature superheater, and 10 is reversal chamber, and 11 is shutoff door, and 12 to take out stove mouth, 13 is compensator, and 14 is regulation door, and 15 is SCR system, and 16 is ash discharging hole.
17- burners in Fig. 4;18- burner hearths;19- superheaters, reheater;20- economizers;21- air preheaters;22- send Blower fan;23- dedusters;24- air-introduced machines;25- chimneys.
Specific embodiment
The present invention is described further below in conjunction with the accompanying drawings:
As illustrated, the present invention proposes a kind of raising SCR temperature of reactor system and devices, including boiler reversal chamber and province Coal device, accesses the SCR reactor inlet flues of two bypass ducts to economizer exit at boiler reversal chamber.
Two bypass ducts use circular pipe.
The valve of controlling switch is provided with pipeline, the valve is controlled by boiler DCS, while SCR reactors The temperature sensor of entrance also accesses boiler DCS.
Anti-air-leakage locking device is additionally provided with the joining place of bypass duct and SCR reactor inlet flues, the device bag Include compression button 1 and Strain lock;The interior leakage proof gasket 2 for being provided with compression shell fragment 3 and being pressed on pipeline joining place of button 1 is being compressed, is being compressed Shell fragment 3 is withstood between compression button 1 and leakage proof gasket 2;Strain lock includes tensing arm 4 and turnbuckle 5, and it is upper and lower two to tense 4 points of arm Individual, upper tension arm passes through hook 6 and is buckled in the interior realization connection of groove for compressing 1 upper wall of button, and lower tension arm is buckled in pressure also by hook Link closely 1 lower wall groove in realize connection, it is upper tension arm and lower tension arm between connected by connecting thick stick 7, turnbuckle 5 is passed through Connection thick stick 7 is simultaneously threadedly coupled with thick stick 7 is connected.Fine jade twists turnbuckle 5 when using, and when turnbuckle 5 withstands standpipe, continues fine jade Twist, tensing arm 4 will pull compression button 1 to compress leakage proof gasket 2, it is in order to preferably realize compressing, while realizing to compress shell fragment 3 Compliant pressure, prevents from rigidly compressing the damage caused to pipeline.The device be in order that pipeline junction it is tighter, prevent Only run cigarette or run the generation of wind phenomenon, improve operating efficiency.
The system utilizes the pressure difference formed between boiler difference heating surface when running, at low load from boiler reversal chamber 510 DEG C~550 DEG C of moderate oven cigarette is extracted, is divided into 2 φ 1300mm circular pipes using 12Cr1MoV, connection enters province's coal The SCR reactor inlet flues of device outlet.When SCR reactor inlet cigarettes temperature is less than 320 DEG C, middle temperature flue gas system is opened, with Main flue gas improve 20 DEG C~30 DEG C of SCR inlet cigarette temperature after re-mixing, and SCR reactors is normally put at low load, improve Out of stock efficiency, meets environmental protection index.Because the exhaust gas volumn for extracting is no more than 10% of total exhaust gas volumn under the load, extraction amount is relatively fitted Close, little is influenceed on boiler feedwater, main reheat steam temperature and boiler efficiency.Device is as shown in Figure 1.
Project plan comparison:It is better than following two modification schemes comprehensively in the large-scale power station unit boiler program,
The bypass smoking mouth of state's electricity Shuangyashan Installation in Plant is in economizer entrance, and wall is steel plate herein, does not have boiler tube, other Road flue is designed using bobbin carriage, extracts about 500 DEG C of flue gases, is per side gas bypass flue:1200×9200.
The bypass smoking mouth of state's electricity Kangping Installation in Plant between the low superheater of back-end ductwork I and II after stove, in afterbody Enclosure wall tube upper shed, extracts about 500 DEG C of flue gases, and bypass flue is designed using bobbin carriage, is per side gas bypass flue:8000× 5000。
Above-mentioned two system can only use electronic pair of blinds baffle plate gate control due to using square pipe design, Can not be adjusted flexibly because dust causes valve during operation, not have an adjustment effect, or because be not closed completely and caused by smoke spillage, Not only increase fuel, boiler inlet water temperature increases, and exhaust gas temperature is improved, and influences boiler efficiency, increases coal consumption, while steel consumption Also much larger than this programme.
Present design chosen position difference cigarette temperature is higher about 550 DEG C, therefore, exhaust gas volumn is less can just meet need for extraction Will, and the device, using circular pipe design, flexible adjustment is adjusted as needed at any time, and construction costs is no more than 200 Ten thousand, and the design of above two gas bypass is more than 6,000,000 yuan.
One kind improves the calculating of SCR reactor inlet cigarette temperature system and device and is shown in Table 1, and investment estimate is shown in Table 2.
The 40%THA result of calculations of table 1
After Yanshan Mountain lake 600MW unit boilers are implemented, boiler operatiopn is reliable, stabilization, NO for the deviceXIt is emitted on 45mg/Nm3, Out of stock efficiency and boiler efficiency reach design level, achieve Expected Results.The statistics in the end of the year 2014, the fire coal of 300,000 multikilowatts Unit has 880, and 600,000 multikilowatts have 481, and it is about 700,000,000 kilowatts that both install, and is main force's machine of coal electricity flexibility transformation Group.To the year two thousand twenty, fired power generating unit transformation scale is about at 200,000,000 kilowatts~2.4 hundred million kilowatts, and potential market is huge, therefore, possess huge Big promotional value.
Operational effect is shown in Table 3.
Table 2 is a kind of to improve SCR reactor inlet cigarette temperature system and device expenses
Table 3 is a kind of to be improved SCR reactor inlet cigarette temperature system and devices and puts into operation effect
Key technology
Formed between 2 grades of heating surfaces of reversal chamber and low temperature superheater and economizer when its operation principle utilizes boiler operatiopn Pressure difference, the temperature difference, about 550 DEG C of moderate oven cigarette is extracted from boiler reversal chamber, and connection respectively enters the SCR reactions of economizer exit Device gas approach, is re-mixed in the flue gas with relatively low temperature, and 320 DEG C are not less than to reach catalyst optimal reaction temperature, Improve out of stock efficiency.
During such as Fig. 4 balanced drafts shown in each position positive/negative-pressure distribution map in cigarette air channel.
Extract position.The selection of Gas Parameters directly affects the effect of boiler improvement transformation, the selection reply of Gas Parameters Equipment, system consider that the selection for extracting position must be provided simultaneously with following condition comprehensively:Extract the flue gas pressures energy higher of position Enough exhaust gas volumns are provided;Extracting the Gas Parameters of position has the requirement of higher temperature.
Because large-sized station boiler uses balanced draft, there is resistance damage in boiler smoke when each heating surface is flowed through Lose, therefore.Certain pressure difference and temperature difference is formed between each heating surface upstream and downstream, invention is extracted compared with senior middle school from boiler reversal chamber Warm flue gas, while being 300 DEG C with 500 DEG C~550 DEG C of middle temperature flue gas cigarette temperature using the temperature difference formed between heating surface Economizer exit flue gas, the exhaust gas volumn of extraction influences little no more than 10% of total exhaust gas volumn under the load on boiler operatiopn.Profit Flue gas is extracted automatically with the pressure difference, the temperature difference that are formed between boiler heating surface.
Tube shaped, takes square pipeline or circular pipe, takes external thermal insulation or inside holding.Due to pressured poor work Make, it is necessary to reduce resistance of ducting loss as far as possible, it is ensured that enough pressure differences.Outer guarantor is greater than using the resistance of ducting of inside holding mode The pipeline of warm form, while according to square pipeline, selecting shutter door, is difficult to control, easily leakage.Therefore, using circle Heat-resisting pipeline, and using external thermal insulation design, reduce the resistance of ducting.
Tubing is chosen.Pipe material uses 12Cr1MoV.Due to the middle temperature that the flue gas medium for extracting is 500 DEG C~550 DEG C Flue gas, it is 580 DEG C that design tubing chooses maximum permissible temperature.
Come into operation at any time under underload, and the normal switching-off under other loads.
Come into operation at any time under underload, and the normal switching-off under other loads.It is divided into 2 12Cr1MoV circular pipes, it is unilateral Using 2 road Valve controllings, wherein 1 is shutoff door, another 1 is regulation door, and 2 valves therein use high temperature resistant, wear-resistant material. Control, it is easy to adjust, the economical operation of boiler is not influenceed.
Innovative point
Flue gas is extracted automatically using the pressure difference, the temperature difference that are formed between boiler heating surface;
Take circular pipe to design, and take external thermal insulation form;
System using regulation door come into operation at any time at low load, and under other loads normal switching-off.

Claims (10)

  1. It is 1. a kind of to improve SCR temperature of reactor system and devices, including boiler reversal chamber and economizer, it is characterised in that:In boiler The SCR reactor inlet flues of two bypass ducts to economizer exit are accessed at reversal chamber.
  2. 2. raising SCR temperature of reactor system and devices according to claim 1, it is characterised in that:Two bypass ducts are adopted Use circular pipe.
  3. 3. raising SCR temperature of reactor system and devices according to claim 1, it is characterised in that:It is provided with pipeline The valve of controlling switch, the valve is controlled by boiler DCS, while the temperature sensor of SCR reactor inlets is also accessed Boiler DCS.
  4. 4. raising SCR temperature of reactor system and devices according to claim 1, it is characterised in that:In bypass duct and SCR The joining place of reactor inlet flue is additionally provided with Anti-air-leakage locking device, and the device includes compressing to be detained(1)And Strain lock;In pressure Link closely(1)Inside it is provided with compression shell fragment(3)With the leakage proof gasket for being pressed on pipeline joining place(2), compress shell fragment(3)Withstand on compression button (1)And leakage proof gasket(2)Between;Strain lock includes tensing arm(4)And turnbuckle(5), tense arm(4)It is divided into upper and lower two, on Arm is tensed by hook(6)It is buckled in compression button(1)Connection is realized in the groove of upper wall, lower tension arm is buckled in compression also by hook Button(1)Connection is realized in the groove of lower wall, by connecting thick stick between upper tension arm and lower tension arm(7)Connection, turnbuckle(5) Through connection thick stick(7)And be connected thick stick(7)Threaded connection.
  5. 5. the raising SCR reactor inlet cigarettes implemented using the raising SCR temperature of reactor system and devices described in claim 1 The method of temperature, it is characterised in that:The method using run when boiler difference heating surface between formed pressure difference, at low load from 510 DEG C ~ 550 DEG C of moderate oven cigarette is extracted at boiler reversal chamber, is divided into 2 circular pipes, connection enters the SCR of economizer exit Reactor inlet flue, when SCR reactor inlet cigarettes temperature is less than 320 DEG C, opens middle temperature flue gas system, is mixed again with main flue gas 20 DEG C ~ 30 DEG C of SCR inlet cigarette temperature is improved after conjunction, SCR reactors is normally put at low load, improve out of stock efficiency, met Environmental protection index.
  6. 6. the method for raising SCR reactor inlet cigarette temperature according to claim 5, it is characterised in that:The method utilizes pot Pressure difference, the temperature difference formed between 2 grades of heating surfaces of reversal chamber and low temperature superheater and economizer when stove runs, from boiler reversal chamber Extract about 550 DEG C of moderate oven cigarette, connection respectively enters the SCR reactor inlet flues of economizer exit, with it is relatively low After the flue gas of temperature is re-mixed, catalyst optimal reaction temperature is not less than 320 DEG C, improves out of stock efficiency.
  7. 7. the method for raising SCR reactor inlet cigarette temperature according to claim 5, it is characterised in that:
    The selection for extracting position must be provided simultaneously with following condition:The flue gas pressures for extracting position are high to provide enough cigarettes Tolerance;Extracting the Gas Parameters of position has the requirement of higher temperature.
  8. 8. the method for raising SCR reactor inlet cigarette temperature according to claim 5, it is characterised in that:The exhaust gas volumn of extraction No more than 10% of total exhaust gas volumn under the load.
  9. 9. the method for raising SCR reactor inlet cigarette temperature according to claim 5, it is characterised in that:Two circular pipes Using the φ 1300mm circular pipes of 12Cr1MoV.
  10. 10. the method for raising SCR reactor inlet cigarette temperature according to claim 5, it is characterised in that:Circular pipeline is unilateral Using 2 road Valve controllings, wherein 1 is shutoff door, another 1 is regulation door.
CN201611095919.9A 2015-12-16 2016-12-02 Improve SCR temperature of reactor system and device and method Pending CN106765035A (en)

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Application Number Priority Date Filing Date Title
CN2015210506062 2015-12-16
CN201521050606 2015-12-16

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109611819A (en) * 2018-12-19 2019-04-12 上海电力学院 A kind of economizer improving SCR system underrun denitration ability
CN112076624A (en) * 2020-09-15 2020-12-15 山东电力研究院 SCR denitration device inlet smoke temperature adjusting system and method

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Publication number Priority date Publication date Assignee Title
JPH10325506A (en) * 1997-05-22 1998-12-08 Ishikawajima Harima Heavy Ind Co Ltd Pressure fluidized bed boiler
CN201293335Y (en) * 2008-09-27 2009-08-19 东北电力科学研究院有限公司 Explosion-proof processing special system thereof of medium-storage type bituminous coal boiler
CN102861511A (en) * 2012-09-28 2013-01-09 南京龙源环保有限公司 SNCR (selective non-catalytic reduction) and SCR (selective catalytic reduction) combined denitration method and SNCR and SCR combined denitration device for flue gas of coal-fired boiler
CN203862139U (en) * 2014-05-30 2014-10-08 内蒙古瑞特科技有限公司 Denitration system for flue
CN203944290U (en) * 2014-02-26 2014-11-19 福建龙净环保股份有限公司 A kind of SCR flue gas denitrification system
CN204648200U (en) * 2015-04-03 2015-09-16 广东电网有限责任公司电力科学研究院 A kind of can the boiler economizer of control SCR entrance flue gas temperature
CN204710105U (en) * 2015-02-04 2015-10-21 刘炎军 A kind of full load equipment for denitrifying flue gas of Industrial Boiler
CN207162509U (en) * 2015-12-16 2018-03-30 华电电力科学研究院有限公司 Improve SCR temperature of reactor system and devices

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10325506A (en) * 1997-05-22 1998-12-08 Ishikawajima Harima Heavy Ind Co Ltd Pressure fluidized bed boiler
CN201293335Y (en) * 2008-09-27 2009-08-19 东北电力科学研究院有限公司 Explosion-proof processing special system thereof of medium-storage type bituminous coal boiler
CN102861511A (en) * 2012-09-28 2013-01-09 南京龙源环保有限公司 SNCR (selective non-catalytic reduction) and SCR (selective catalytic reduction) combined denitration method and SNCR and SCR combined denitration device for flue gas of coal-fired boiler
CN203944290U (en) * 2014-02-26 2014-11-19 福建龙净环保股份有限公司 A kind of SCR flue gas denitrification system
CN203862139U (en) * 2014-05-30 2014-10-08 内蒙古瑞特科技有限公司 Denitration system for flue
CN204710105U (en) * 2015-02-04 2015-10-21 刘炎军 A kind of full load equipment for denitrifying flue gas of Industrial Boiler
CN204648200U (en) * 2015-04-03 2015-09-16 广东电网有限责任公司电力科学研究院 A kind of can the boiler economizer of control SCR entrance flue gas temperature
CN207162509U (en) * 2015-12-16 2018-03-30 华电电力科学研究院有限公司 Improve SCR temperature of reactor system and devices

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109611819A (en) * 2018-12-19 2019-04-12 上海电力学院 A kind of economizer improving SCR system underrun denitration ability
CN112076624A (en) * 2020-09-15 2020-12-15 山东电力研究院 SCR denitration device inlet smoke temperature adjusting system and method

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