CN203836944U - SNCR-SCR mixed denitration system of circulating fluidized bed boiler - Google Patents

SNCR-SCR mixed denitration system of circulating fluidized bed boiler Download PDF

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Publication number
CN203836944U
CN203836944U CN201420249377.6U CN201420249377U CN203836944U CN 203836944 U CN203836944 U CN 203836944U CN 201420249377 U CN201420249377 U CN 201420249377U CN 203836944 U CN203836944 U CN 203836944U
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China
Prior art keywords
sncr
reducing agent
scr
burner hearth
cfbb
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CN201420249377.6U
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Chinese (zh)
Inventor
杨万才
潘阳
李海英
丛日强
毛羽
李建军
王莹
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BEIJING LOWCARBON ENVIRONMENT PROTECTION TECHNOLOGY Co Ltd
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BEIJING LOWCARBON ENVIRONMENT PROTECTION TECHNOLOGY Co Ltd
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Abstract

The utility model discloses an SNCR-SCR (Selective Non Catalytic Reduction-Selective Catalytic Reduction) mixed denitration system of a circulating fluidized bed boiler. The SNCR-SCR mixed denitration system comprises a reducing agent preparation device arranged outside a hearth, and an SNCR metering feeding device and an SCR metering feeding device both connected with the reducing agent preparation device, as well as an SNCR reducing agent ejector and an SCR reducing agent ejector both connected with the SNCR metering feeding device by virtue of pipelines respectively, and also a cyclone separator connected with the upper part of the hearth; the cyclone separator is used for conveying a large quantity of non-burnt high-temperature particles carried in the separated flue gas into the hearth by virtue of a return pipeline connected with the cyclone separator so that the non-burnt high-temperature particles can be re-burnt, wherein the SNCR reducing agent ejector is arranged in the return pipeline and the SCR reducing agent ejector is arranged in a boiler tail flue. The SNCR-SCR mixed denitration system is capable of increasing the stay time of a reducing agent, and therefore, the reducing agent is more evenly mixed with flue gas, the utilization rate of amino substances is higher, and the problem of screen explosion caused by the situation that the reducing agent is ejected by the hearth to a water cooling wall pipe is avoided.

Description

A kind of CFBB SNCR-SCR mixing denitrating system
Technical field
The utility model relates to a kind of flue gas denitrification system, is specifically related to a kind of SNCR-SCR mixing denitrating system of CFBB, belongs to denitration of boiler smoke technical field.
Background technology
Along with expanding economy, the discharge capacity of nitrogen oxide (NOx) pollutant increases sharply, severe contamination ecological environment, become one of key factor of restriction economic development, wherein coal-burning boiler is concentrated, is easily controlled compared with other spread sources greatly and relatively because of its discharge capacity, becomes the preferred object of controlling nitrogen oxide (NOx).
At present, denitrating flue gas nitrogen oxide (NOx), can be divided into wet method NO_x removal and dry removal NOx according to administering technique, wherein conventional dry removal NOx is also divided into selective catalytic reduction (SCR) and SNCR method (SNCR).CFBB (CFB) technology is the high-efficiency low-pollution clean burning branch art developing rapidly in recent ten years.This technology has obtained business application widely in the field such as station boiler, Industrial Boiler in the world, for CFB boiler, because temperature field is stable, original NOx concentration is low, and SNCR technology (SNCR) is processed NOx in its flue gas and is widely used.
Chinese patent literature CN103638805A discloses a kind of CFB boiler SNCR denitration method for flue gas of dual reducting agents, comprise, when cyclone inlet flue gas temperature is more than 850 DEG C, or, CFB boiler load is in the time that 70%BMCR is above, select to spray into conventional ammonia reducing agent from cyclone inlet flue, when cyclone inlet flue gas temperature is lower than 850 DEG C, or, CFB boiler load is during lower than 70%BMCR, select from upper furnace, a place or many places in cyclone inlet flue and separator outlet flue spray into the reducing agent can produce active ammonia component.While adopting above-mentioned spray regime injection reduction agent, make its fire resistance rating to injector have relatively high expectations because fire box temperature is high, thereby injection apparatus cost is improved, in addition, because the inner space of burner hearth is limited, after spray when liquid reducing agent, may causing the boiler interior conduit contact liquid droplets such as water-cooling wall after reducing agent sprays into, easily cause corrosion, even produce explosion.
Utility model content
For solving in prior art in the time that upper furnace, cyclone inlet flue or separator outlet flue spray into liquid reducing agent, easily cause the problem of the boiler interior conduit corrosion such as water-cooling wall or explosion, and then a kind of CFBB SNCR-SCR mixing denitrating system is provided.
For this reason, the scheme that the utility model is taked is,
A kind of CFBB SNCR-SCR mixing denitrating system, comprises,
Be arranged at SNCR measurement charging device and the SCR measurement charging device outside described burner hearth that be positioned at that reducing agent preparation facilities outside burner hearth is connected with described reducing agent preparation facilities, and the SNCR reducing agent injector being connected with described SNCR measurement charging device by pipeline and the SCR reducing agent injector being connected with described SCR measurement charging device by pipeline, also comprise the cyclone separator being connected with described upper furnace, described cyclone separator is delivered to boiler tail device by the flue gas after separating by separator outlet pipeline, described cyclone separator is transported to the high-temperature particle that there is no in a large number after-flame carrying in the flue gas after separating in described burner hearth and rekindles via coupled returning charge pipeline, it is characterized in that, described SNCR reducing agent injector is arranged in described returning charge pipeline, described SCR reducing agent injector is arranged in boiler back end ductwork.
In above-mentioned CFBB SNCR-SCR mixing denitrating system, described SNCR reducing agent injector is perpendicular to the center line of described burner hearth, and has angle with the axial shape of described returning charge pipeline, and described angle is not more than 60 degree.
In above-mentioned CFBB SNCR-SCR mixing denitrating system, in described returning charge pipeline, be provided with multiple described SNCR reducing agent injectors, multiple described SNCR reducing agent injectors are arranged on the sidewall of described returning charge pipeline symmetrically, and the some described SNCR reducing agent injector that is positioned at same sidewall be arranged in parallel.
In above-mentioned CFBB SNCR-SCR mixing denitrating system, described SNCR reducing agent injector comprises liquid phase supervisor, be sleeved on described liquid phase is responsible for peripheral gas phase supervisor, and is sleeved on described gas phase and is responsible for peripheral cooling tube; Described liquid phase supervisor and upper supporting liquid phase arm and the gas phase arm that is provided with the coaxial setting with opening of described gas phase supervisor, and described gas phase arm is sleeved on the periphery of described liquid phase arm, described liquid phase arm is connected with described liquid phase supervisor, described gas phase arm is connected with described gas phase supervisor, and described gas phase arm extends to described cooling tube outside.
In above-mentioned CFBB SNCR-SCR mixing denitrating system, described SNCR reducing agent injector is the straight tube with opening, and SNCR measurement charging device is also connected with thinking that the amino material spraying in straight tube provides the Pneumatic conveyer of power-assisted.
In above-mentioned CFBB SNCR-SCR mixing denitrating system, also comprise returning charge standpipe, described returning charge standpipe one end is connected with described cyclone separator, and the other end is connected with material returning device, and described material returning device is also connected with described returning charge pipeline.
In above-mentioned CFBB SNCR-SCR mixing denitrating system, along the flow direction of boiler smoke, described boiler tail device comprises superheater, reboiler, economizer, SCR catalyst-assembly, secondary economizer and an air preheater successively, and described SCR reducing agent injector is arranged between described SCR catalyst-assembly and a described economizer.
In above-mentioned CFBB SNCR-SCR mixing denitrating system, fuel tube, one end of described fuel tube is connected with described burner hearth, and its other end is connected with Bunker;
Lime stone conveyance conduit, one end of described lime stone conveyance conduit is connected with burner hearth, and its other end is connected with lime stone storehouse.
In above-mentioned CFBB SNCR-SCR mixing denitrating system, also comprise air-supply arrangement, described air-supply arrangement comprises air-supply arrangement and secondary blast device, a described air-supply arrangement comprises primary air fan and an air channel, the one end in a described air channel is connected with primary air fan, and its other end is connected with the water cooled wind chamber that is arranged at burner hearth bottom by described air preheater; Described secondary blast device comprises overfire air fan and secondary air duct, and one end of described secondary air duct is connected with overfire air fan, and its other end is connected with described burner hearth by described air preheater.。
Compared with prior art, the utlity model has following advantage,
1, the application follows CFBB SNCR-SCR mixing denitrating system, because SNCR reducing agent injector is arranged on returning charge pipeline, make SNCR reducing agent and do not have the high-temperature fuel particle of after-flame together to enter boiler, SNCR reducing agent can mix at any time and participate in reaction in burner hearth with the Gas phase Smoke of coal combustion formation like this, instead of flue gas rises to certain position and react with reducing agent in burner hearth, be equivalent to the SNCR reducing agent time of staying extend; Adopt in addition the application's mode that more even that SNCR reducing agent injector makes that SNCR reducing agent mixes with flue gas is set, amino material utilization is higher, and removal of nitrogen oxide efficiency is high; And SNCR reducing agent sprays into be a little located at and connects returning charge pipeline place, stop burner hearth injection reduction agent and be sprayed onto water screen tube and cause the problem of sudden and violent screen.
2, the application's CFBB SNCR-SCR mixing denitrating system, because SNCR reducing agent injector is arranged on returning charge pipeline, thereby has reduced the heatproof requirement to injector material, does not need high temperature resistant material, thereby has reduced capital expenditure.
3, compared with traditional CFBB SNCR, SNCR reducing agent injector is arranged on returning charge pipeline, will injector be arranged on boiler or cyclone separator etc. and locates, and has reduced the change to boiler, and construction is simple, and the duration is short, reduces improvement cost.
Brief description of the drawings
For content of the present utility model is more likely to be clearly understood, according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is a kind of CFBB SNCR-SCR mixing denitrating system.
Wherein, Reference numeral is expressed as,
1-reducing agent preparation facilities; 2-SNCR measurement charging device; 3-SCR measurement charging device; 4-SNCR reducing agent injector; 5-returning charge pipeline; 6-water cooled wind chamber; 7-burner hearth; 8-lime stone storehouse; 9-Bunker; 10-cyclone separator; 12-superheater; 13-reboiler; Economizer of 14-; 15-SCR catalyst-assembly; 16-SCR reducing agent injector; No. bis-economizers of 17-; 18-air preheater; 19-primary air fan; 20-overfire air fan; 21-returning charge standpipe; 22-material returning device.
Detailed description of the invention
A kind of CFBB SNCR-SCR mixing denitrating system as shown in Figure 1, comprises,
Be arranged at SNCR measurement charging device 2 and the SCR measurement charging device 3 outside described burner hearth 7 that be positioned at that reducing agent preparation facilities 1 outside burner hearth 7 is connected with described reducing agent preparation facilities 1, and the SNCR reducing agent injector 4 being connected with described SNCR measurement charging device 2 by pipeline and the SCR reducing agent injector 16 being connected with described SCR measurement charging device 3 by pipeline, also comprise the cyclone separator 10 being connected with described burner hearth 7 tops, described cyclone separator 10 is delivered to boiler tail device by the flue gas after separating by separator outlet pipeline, described cyclone separator 10 is transported to the high-temperature particle that there is no in a large number after-flame carrying in the flue gas after separating in described burner hearth and rekindles via coupled returning charge pipeline 5, it is characterized in that, described SNCR reducing agent injector 4 is arranged in described returning charge pipeline 4, described SCR reducing agent injector 16 is arranged in boiler back end ductwork.
On the basis of above-mentioned embodiment, described SNCR reducing agent injector 4 is perpendicular to the center line of described burner hearth 7, and has angle with the axial shape of described returning charge pipeline 5, and described angle is not more than 60 degree.
On the basis of above-mentioned embodiment, in described returning charge pipeline 5, be provided with multiple described SNCR reducing agent injectors 4, multiple described SNCR reducing agent injectors 4 are arranged on the sidewall of described returning charge pipeline 4 symmetrically, and the some described SNCR reducing agent injector 4 that is positioned at same sidewall be arranged in parallel.
On the basis of above-mentioned embodiment, when the described SNCR reducing agent of carrying is while being liquid, described SNCR reducing agent injector 4 comprises liquid phase supervisor, be sleeved on described liquid phase is responsible for peripheral gas phase supervisor, and is sleeved on described gas phase and is responsible for peripheral cooling tube; Described liquid phase supervisor and upper supporting liquid phase arm and the gas phase arm that is provided with the coaxial setting with opening of described gas phase supervisor, and described gas phase arm is sleeved on the periphery of described liquid phase arm, described liquid phase arm is connected with described liquid phase supervisor, described gas phase arm is connected with described gas phase supervisor, and described gas phase arm extends to described cooling tube outside.SNCR reductant solution is responsible for by liquid phase arm and is sprayed by liquid phase, and compressed air is responsible for by gas phase arm and is sprayed by gas phase, and amino substance solution sprays into after being atomized under compressed-air actuated effect and connects in returning charge pipeline.
Alternately, in the time that the SNCR reducing agent of carrying is pressed powder, described SNCR reducing agent injector 4 is for having the straight tube of opening, and SNCR measurement charging device 2 is also connected with thinking that the SNCR reducing agent spraying in straight tube provides the Pneumatic conveyer of power-assisted.Through described SNCR measurement charging device, pressed powder is accurately set, under the strength of Pneumatic conveyer is carried by SNCR reducing agent pressed powder by sending into returning charge pipeline, enter boiler with coal-burning particle and flue gas, wherein said Pneumatic conveyer is that blower fan or other can spray into amino material pressed powder the power set that connect returning charge pipeline.
On the basis of above-mentioned embodiment, also comprise returning charge standpipe 21, described returning charge standpipe 21 one end are connected with described cyclone separator 10, and the other end is connected with material returning device 22, and described material returning device 22 is also connected with described returning charge pipeline 5.
On the basis of above-mentioned embodiment, along the flow direction of boiler smoke, described boiler tail device comprises superheater 12, reboiler 13, economizer 14, SCR catalyst-assembly 15, secondary economizer 17 and an air preheater 18 successively, and described SCR reducing agent injector 16 is arranged between described SCR catalyst-assembly 15 and a described economizer 14.
On the basis of above-mentioned embodiment, also comprise fuel tube, one end of described fuel tube is connected with described burner hearth 7, and its other end is connected with Bunker 9; Lime stone conveyance conduit, one end of described lime stone conveyance conduit is connected with burner hearth, and its other end is connected with lime stone storehouse 8.
On the basis of above-mentioned embodiment, also comprise air-supply arrangement, described air-supply arrangement comprises air-supply arrangement and secondary blast device, a described air-supply arrangement comprises primary air fan 19 and an air channel, the one end in a described air channel is connected with primary air fan, and its other end is connected with the water cooled wind chamber 6 that is arranged at burner hearth bottom by described air preheater; Described secondary blast device comprises overfire air fan 20 and secondary air duct, and one end of described secondary air duct is connected with overfire air fan, and its other end is connected with described burner hearth by described air preheater.
CFB boiler SNCR-SCR mixing denitrating technique, comprise the following steps: reducing agent preparation facilities 1 is sent into SNCR measurement charging device 2 by SNCR reducing agent by pipeline, measure and carry reducing agent according to aequum by SNCR metering device 2, connect SNCR reducing agent injector 4 by pipeline, and spraying into returning charge pipeline 5 by SNCR reducing agent injector 4, reducing agent decomposes is NH 3, after enter boiler furnace 7 with flue gas, in burner hearth 7, at 900 DEG C-1100 DEG C of temperature windows that are applicable to SNCR reaction, NOx is reduced to N 2and H 2o, thus remove nitrogen oxide.
The NOx that SNCR denitration does not remove completely together successively by cyclone separator 10, superheater 12, reboiler 13 and an economizer 14, enters SCR catalyst-assembly (for example, SCR catalyst layer) with flue gas.SCR reducing agent is transported to SCR reducing agent injector 16 by 3 meterings of SCR measurement charging device, sprays into flue, enters SCR catalyst-assembly under 300 DEG C~400 DEG C conditions, participate in SCR reaction with the flue gas that there is no complete NO_x removal, reaches the object of NO_x removal.
The utility model mainly adopts urea liquid, dry urea powder, ammoniacal liquor or urea liquation to mix denitrification reducing agent as SNCR-SCR, and new reducing agent is set sprays position and spray into, remove the NOx in flue gas, significantly reduce cost of investment and operating cost, abbreviation process system, simple to operate.
Obviously, above-described embodiment is only for example is clearly described, and the not restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all embodiments.And the apparent variation of being extended out thus or variation are still among protection domain of the present utility model.

Claims (9)

1. a CFBB SNCR-SCR mixing denitrating system, comprises,
What be arranged at that the outer reducing agent preparation facilities (1) of burner hearth (7) is connected with described reducing agent preparation facilities (1) is positioned at described burner hearth (7) SNCR measurement charging device (2) and SCR measurement charging device (3) outward, and the SNCR reducing agent injector (4) being connected with described SNCR measurement charging device (2) by pipeline and the SCR reducing agent injector (16) being connected with described SCR measurement charging device (3) by pipeline, also comprise the cyclone separator (10) being connected with described burner hearth (7) top, described cyclone separator (10) is delivered to boiler tail device by the flue gas after separating by separator outlet pipeline, described cyclone separator (10) is transported to the high-temperature particle that there is no in a large number after-flame carrying in the flue gas after separating in described burner hearth and rekindles via coupled returning charge pipeline (5), it is characterized in that, described SNCR reducing agent injector (4) is arranged in described returning charge pipeline (4), described SCR reducing agent injector (16) is arranged in boiler back end ductwork.
2. CFBB SNCR-SCR mixing denitrating system according to claim 1, is characterized in that,
Described SNCR reducing agent injector (4) is perpendicular to the center line of described burner hearth (7), and has angle with the axial shape of described returning charge pipeline (5), and described angle is not more than 60 degree.
3. CFBB SNCR-SCR mixing denitrating system according to claim 1 and 2, is characterized in that,
In described returning charge pipeline (5), be provided with multiple described SNCR reducing agent injectors (4), multiple described SNCR reducing agent injectors (4) are arranged on the sidewall of described returning charge pipeline (4) symmetrically, and the some described SNCR reducing agent injector (4) that is positioned at same sidewall be arranged in parallel.
4. CFBB SNCR-SCR mixing denitrating system according to claim 3, is characterized in that,
Described SNCR reducing agent injector (4) comprises liquid phase supervisor, be sleeved on described liquid phase is responsible for peripheral gas phase supervisor, and is sleeved on described gas phase and is responsible for peripheral cooling tube; Described liquid phase supervisor and upper supporting liquid phase arm and the gas phase arm that is provided with the coaxial setting with opening of described gas phase supervisor, and described gas phase arm is sleeved on the periphery of described liquid phase arm, described liquid phase arm is connected with described liquid phase supervisor, described gas phase arm is connected with described gas phase supervisor, and described gas phase arm extends to described cooling tube outside.
5. CFBB SNCR-SCR mixing denitrating system according to claim 3, is characterized in that,
Described SNCR reducing agent injector (4) is for having the straight tube of opening, and SNCR measurement charging device (2) is also connected with thinking that the amino material spraying in straight tube provides the Pneumatic conveyer of power-assisted.
6. according to the CFBB SNCR-SCR mixing denitrating system described in claim 4 or 5, it is characterized in that,
Also comprise returning charge standpipe (21), described returning charge standpipe (21) one end is connected with described cyclone separator (10), the other end is connected with material returning device (22), and described material returning device (22) is also connected with described returning charge pipeline (5).
7. CFBB SNCR-SCR mixing denitrating system according to claim 6, it is characterized in that, along the flow direction of boiler smoke, described boiler tail device comprises superheater (12), reboiler (13), an economizer (14), SCR catalyst-assembly (15), secondary economizer (17) and air preheater (18) successively, and described SCR reducing agent injector (16) is arranged between described SCR catalyst-assembly (15) and a described economizer (14).
8. CFBB SNCR-SCR mixing denitrating system according to claim 7, is characterized in that, also comprise,
Fuel tube, one end of described fuel tube is connected with described burner hearth (7), and its other end is connected with Bunker (9);
Lime stone conveyance conduit, one end of described lime stone conveyance conduit is connected with burner hearth, and its other end is connected with lime stone storehouse (8).
9. CFBB SNCR-SCR mixing denitrating system according to claim 8, it is characterized in that, also comprise air-supply arrangement, described air-supply arrangement comprises air-supply arrangement and secondary blast device, a described air-supply arrangement comprises primary air fan (19) and an air channel, the one end in a described air channel is connected with primary air fan, and its other end is connected with the water cooled wind chamber (6) that is arranged at burner hearth bottom by described air preheater; Described secondary blast device comprises overfire air fan (20) and secondary air duct, and one end of described secondary air duct is connected with overfire air fan, and its other end is connected with described burner hearth by described air preheater.
CN201420249377.6U 2014-05-15 2014-05-15 SNCR-SCR mixed denitration system of circulating fluidized bed boiler Expired - Lifetime CN203836944U (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104785080A (en) * 2015-04-02 2015-07-22 浙江菲达脱硫工程有限公司 SNCR and SCR combined denitration device and process
CN105465796A (en) * 2015-03-26 2016-04-06 无锡华光锅炉股份有限公司 Waste incineration boiler
CN105964142A (en) * 2016-06-28 2016-09-28 江苏亿金环保科技有限公司 Combined type flue gas denitration system
CN106402845A (en) * 2016-10-28 2017-02-15 杭州红山热电有限公司 Boiler burning system
CN106621752A (en) * 2016-12-23 2017-05-10 沈阳鑫博工业技术股份有限公司 Fume denitration device for aluminum oxide suspension calcinator and use method thereof
CN108434964A (en) * 2018-05-22 2018-08-24 中国华能集团清洁能源技术研究院有限公司 A kind of matrix form injection apparatus for circulating fluidized bed boiler SNCR denitration system
CN108709184A (en) * 2018-05-24 2018-10-26 于大川 A kind of clinical waste environment-friendly processing unit
CN108905568A (en) * 2018-08-20 2018-11-30 山东省建设高压容器有限公司 A kind of circulating fluidized bed boiler flue gas desulfuration and denitrification system and its remodeling method
CN108954298A (en) * 2018-08-20 2018-12-07 山东省建设高压容器有限公司 A kind of circulating fluidized bed boiler low nitrogen burning exhaust system and its remodeling method
CN110064285A (en) * 2019-04-12 2019-07-30 华电电力科学研究院有限公司 A kind of high temperature resistant and the efficient SNCR injection apparatus and its working method for strengthening mixing
CN111006207A (en) * 2019-12-09 2020-04-14 华中科技大学 Biomass fluidized bed direct combustion system and denitration method thereof

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105465796A (en) * 2015-03-26 2016-04-06 无锡华光锅炉股份有限公司 Waste incineration boiler
CN104785080A (en) * 2015-04-02 2015-07-22 浙江菲达脱硫工程有限公司 SNCR and SCR combined denitration device and process
CN105964142A (en) * 2016-06-28 2016-09-28 江苏亿金环保科技有限公司 Combined type flue gas denitration system
CN106402845A (en) * 2016-10-28 2017-02-15 杭州红山热电有限公司 Boiler burning system
CN106621752B (en) * 2016-12-23 2024-03-08 沈阳鑫博工业技术股份有限公司 Flue gas denitration device of alumina suspension roasting furnace and use method of flue gas denitration device
CN106621752A (en) * 2016-12-23 2017-05-10 沈阳鑫博工业技术股份有限公司 Fume denitration device for aluminum oxide suspension calcinator and use method thereof
CN108434964A (en) * 2018-05-22 2018-08-24 中国华能集团清洁能源技术研究院有限公司 A kind of matrix form injection apparatus for circulating fluidized bed boiler SNCR denitration system
CN108709184A (en) * 2018-05-24 2018-10-26 于大川 A kind of clinical waste environment-friendly processing unit
CN108954298A (en) * 2018-08-20 2018-12-07 山东省建设高压容器有限公司 A kind of circulating fluidized bed boiler low nitrogen burning exhaust system and its remodeling method
CN108905568A (en) * 2018-08-20 2018-11-30 山东省建设高压容器有限公司 A kind of circulating fluidized bed boiler flue gas desulfuration and denitrification system and its remodeling method
CN110064285A (en) * 2019-04-12 2019-07-30 华电电力科学研究院有限公司 A kind of high temperature resistant and the efficient SNCR injection apparatus and its working method for strengthening mixing
CN110064285B (en) * 2019-04-12 2023-07-14 华电电力科学研究院有限公司 High-temperature-resistant and intensified-mixing high-efficiency SNCR (selective non-catalytic reduction) injection device and working method thereof
CN111006207A (en) * 2019-12-09 2020-04-14 华中科技大学 Biomass fluidized bed direct combustion system and denitration method thereof

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