CN102966945B - Reduce the method for biomass recirculating fluidized bed boiler discharged nitrous oxides - Google Patents

Reduce the method for biomass recirculating fluidized bed boiler discharged nitrous oxides Download PDF

Info

Publication number
CN102966945B
CN102966945B CN201210434773.1A CN201210434773A CN102966945B CN 102966945 B CN102966945 B CN 102966945B CN 201210434773 A CN201210434773 A CN 201210434773A CN 102966945 B CN102966945 B CN 102966945B
Authority
CN
China
Prior art keywords
fluidized bed
bed boiler
recirculating fluidized
biomass recirculating
reducing agent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201210434773.1A
Other languages
Chinese (zh)
Other versions
CN102966945A (en
Inventor
韩旭
张岩丰
曹民侠
李宏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sunshine Kaidi New Energy Group Co Ltd
Original Assignee
Sunshine Kaidi New Energy Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sunshine Kaidi New Energy Group Co Ltd filed Critical Sunshine Kaidi New Energy Group Co Ltd
Priority to CN201210434773.1A priority Critical patent/CN102966945B/en
Publication of CN102966945A publication Critical patent/CN102966945A/en
Priority to PCT/CN2013/085560 priority patent/WO2014067405A1/en
Application granted granted Critical
Publication of CN102966945B publication Critical patent/CN102966945B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B01D53/46—Removing components of defined structure
    • B01D53/54—Nitrogen compounds
    • B01D53/56—Nitrogen oxides
    • 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
    • B01D53/77—Liquid phase processes
    • B01D53/78—Liquid phase processes with gas-liquid contact
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00—Fluidised bed combustion apparatus
    • F23C10/02—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00—Fluidised bed combustion apparatus
    • F23C10/18—Details; Accessories
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/30—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having a fluidised bed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J7/00—Arrangement of devices for supplying chemicals to fire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/20—Reductants
    • B01D2251/206—Ammonium compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen compounds
    • B01D2257/404—Nitrogen oxides other than dinitrogen oxide
    • 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
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2202/00—Combustion
    • F23G2202/10—Combustion in two or more stages
    • F23G2202/106—Combustion in two or more stages with recirculation of unburned solid or gaseous matter into combustion chamber
    • 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

Abstract

The invention discloses a kind of method reducing biomass recirculating fluidized bed boiler discharged nitrous oxides, comprise the steps: 1) flue gas of fluidized-bed combustion boiler discharge is imported in deduster, remove the dust impurities of the wherein overwhelming majority, obtain the flue gas of comparatively cleaning; 2) part in flue gas comparatively clean for gained is incorporated into an air compartment from the First air entrance of fluidized-bed combustion boiler circulates, to reduce the oxygen content of First air, and then reduce the combustion temperature in hearth of fluidized-bed combustion boiler; 3) meanwhile, denitrogenation reducing agent is sprayed into wherein from the Secondary Air entrance of fluidized-bed combustion boiler, utilize Secondary Air that the denitrogenation reducing agent of atomization is fully mixed with the flue gas in burner hearth, and then make nitrogen oxide wherein and denitrogenation reducing agent generation chemical reaction and be removed.The method features simple and practical process, do not need to carry out large transformation to biomass recirculating fluidized bed boiler, cost of investment is low, reduces discharged nitrous oxides Be very effective.<!--1-->

Description

Reduce the method for biomass recirculating fluidized bed boiler discharged nitrous oxides
Technical field
The present invention relates to biomass recirculating fluidized bed boiler, refer to a kind of method reducing biomass recirculating fluidized bed boiler discharged nitrous oxides particularly.
Background technology
At existing boiler, smelting furnace, in the large-scale combustion apparatus such as incinerator, many uses burnout degree system (OFA, OverfireAir) discharge of pollutant is reduced, (coal dust is can be by fuel, fuel oil, natural gas etc.) and Secondary Air (refer to the wind that the some strands of air-flows at a high speed spraying into burner hearth from fire grate top are formed, can be air, oxygen etc.) spray into the combustion zone of burner hearth together and make it burning, and above combustion zone, spray into burnout degree (for reducing the generation of NOx, the hot blast that air stage feeding mode is sent into separately on main burner top is adopted in burner hearth, to make combustible at later stage further after-flame) to form complete combustion zone, thus realize the maximization of burning, the generation of decreasing pollution thing.Even if but have employed burnout degree system, still can contain a certain amount of nitrogen oxide (NOx is mainly NO and NO2) in the burner hearth flue gas that burning generates, and nitrogen oxide can cause the pollution such as acid rain, photochemical fog.In order to reduce the content of the nitrogen oxides in effluent of discharge further, SNCR method (SNCR can be used, SelectiveNon-CatalyticReduction), be about to the reducing agent that can be optionally nitrogen reduction of nitrogen oxide and inject the flue gas that fire box temperature is 850 ~ 1100 DEG C, thus reduce the content of burner hearth nitrogen oxides in effluent, wherein reducing agent sprays into by the spout be located at below furnace arch, furnace nose.
At present, generating power with biomass combustion equipment adopts biomass recirculating fluidized bed boiler mostly, and its nitrogen oxide emission is less than coal-burning boiler, generally at 200mg/m 3left and right, the slightly 100mg/m of superstate standard 3.Because the installed capacity of biomass recirculating fluidized bed boiler is less, if adopt selective catalytic reduction (SCR) to carry out denitrogenation, its investment is large, cost is higher; And use traditional SNCR method (SNCR) to carry out denitrogenation, its reducing agent adopted enters in stove as aqueous solution of urea will carry a large amount of moisture content, carry the deep that urea arrives burner hearth fully to mix with flue gas to enable water droplet, but because the water content of biomass fuel own is just higher, enter a large amount of moisture content by make the heat of flue gas consume by the latent heat of vaporization of water, so the efficiency of biomass recirculating fluidized bed boiler can be caused to decline.
In order to solve the problem, publication number is the reduction nitric oxide system that the Chinese patent of CN201748452U provides a kind of selective non-catalytic reduction system and combustion system and combines, it is provided with fuel nozzle ports on furnace body sidewall, for fuel and Secondary Air are sprayed in burner hearth, position higher than fuel nozzle ports on furnace body sidewall is provided with fire air nozzle, be provided with liquid reducing agent sprayer at fire air nozzle place, make liquid reducing agent form drop and together spray into burner hearth with burnout degree.Because the air quantity of burnout degree is less than Secondary Air, also poor with the mixed effect of flue gas, and it is on the low side to utilize this structure to spray into the reductant solution concentration of burner hearth, still exists and enters the problem that moisture content in stove is too high, denitrification effect is poor, boiler efficiency reduces.
Summary of the invention
Object of the present invention is exactly the defect that will overcome prior art existence, provides a kind of denitrification effect remarkable and the method for the reduction biomass recirculating fluidized bed boiler discharged nitrous oxides that technique is simple, economical and practical.
For achieving the above object, the method for the reduction biomass recirculating fluidized bed boiler discharged nitrous oxides designed by the present invention, comprises the following steps:
1) flue gas that biomass recirculating fluidized bed boiler is discharged is imported in deduster, remove the dust impurities of the wherein overwhelming majority, obtain comparatively clean flue gas;
2) part in flue gas comparatively clean for gained is incorporated into an air compartment from the First air entrance of biomass recirculating fluidized bed boiler circulates, to reduce the oxygen content of First air, and then reduce the combustion temperature in hearth of biomass recirculating fluidized bed boiler;
3) meanwhile, denitrogenation reducing agent is sprayed into wherein from the Secondary Air entrance of biomass recirculating fluidized bed boiler, utilize Secondary Air that the denitrogenation reducing agent of atomization is fully mixed with the flue gas in burner hearth, and then make nitrogen oxide wherein and denitrogenation reducing agent generation chemical reaction and be removed.
Preferably, in described step 3), denitrogenation reducing agent adopts the one in aqueous solution of urea, ammonia spirit, amine compound aqueous solution, and the mass percent concentration of each solution is 40 ~ 60%.Like this, the denitrogenation reducing agent of high concentration can make the water yield that enters in biomass recirculating fluidized bed boiler less, avoids a large amount of moisture content to cause heat smoke too much by the latent heat of vaporization consumption of water, ensures the thermal efficiency of biomass recirculating fluidized bed boiler.
Preferably, in described step 3), the average diameter of denitrogenation reducing agent droplet particle is 100 ~ 1000 μm.Because micron-sized droplet particle has great specific area, denitrogenation reducing agent can be made fully to contact mixing with flue gas.
Preferably, in described step 3), temperature when being sprayed into by adjustment Secondary Air, controls the fire box temperature of the Secondary Air porch of biomass recirculating fluidized bed boiler in the scope of 800 ~ 900 DEG C.This temperature, within 850 ~ 1100 DEG C, the optimum temperature interval that denitrogenation reducing agent and nitrogen oxide react, can guarantee that denitrogenation reducing agent and nitrogen oxide fully react.
Preferably, described step 2) in, by adjusting the amount of circulating gas be incorporated in an air compartment, making burner hearth bottom be in oxygen debt fired state, controlling the fuel inlet place fire box temperature of biomass recirculating fluidized bed boiler in the scope of 800 ~ 900 DEG C.Like this, temperature is consistent everywhere to keep burner hearth, local temperature in stove can be avoided too high and the detonation that causes, reduce the generation of fuel bound nitrogen, avoid the slagging scorification of fuel, agglomerate simultaneously, and then improve the efficiency of boiler.
Preferably, in described step 3), the time of staying of denitrogenation reducing agent and reaction of nitrogen oxides in biomass recirculating fluidized bed boiler is controlled in the scope of 0.5 ~ 2s.This time of staying can guarantee that denitrogenation reducing agent and nitrogen oxide fully react.
The invention has the advantages that: the flue gas of biomass recirculating fluidized bed boiler is sent into an air compartment after deduster dust removal process, reduces the oxygen content of First air, reduce the ignition temperature of burner hearth, reduce the generation of nitrogen oxide; Close to the temperature range of the temperature of Secondary Air porch at 800 DEG C ~ 900 DEG C in Boiler Furnace, this temperature range is within the optimum temperature interval of denitrogenation reducing agent denitrification reaction, utilize simultaneously Secondary Air can in stove with the feature of flue gas good mixing, make the atomizing particle carrying denitrogenation reducing agent also can carry out good mixing with flue gas, obtain good denitrification effect.The reducing agent that tradition denitrogenation uses is generally the weak solution of 10%, a large amount of water can be brought into, moisture content in flue gas is increased, reduce boiler efficiency, the present invention sprays into the denitrogenation reducing agent of high concentration in Secondary Air porch, reduce the water content into stove, the basis ensureing denitrification effect improves boiler efficiency.
In sum, the present invention adopts flue gas recirculation and efficiently solves in the method that Secondary Air porch spray high concentration denitrogenation reducing agent combines the problem that flue-gas denitrification and boiler efficiency decline.Meanwhile, present invention process is simple and practical, does not need to carry out large transformation to biomass recirculating fluidized bed boiler, and cost of investment is low, reduces discharged nitrous oxides Be very effective.
Accompanying drawing explanation
Fig. 1 is the syndeton schematic diagram of the biomass recirculating fluidized bed boiler adopting the inventive method.
In figure, each part numbers is as follows: biomass recirculating fluidized bed boiler 1, Secondary Air entrance 1a, First air entrance 1b, cyclone separator 1c, air compartment 1d, fuel inlet 1e, deduster 2, a chimney 3.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Biomass recirculating fluidized bed boiler 1 shown in figure, its side wall upper part is provided with Secondary Air entrance 1a, its lower sidewall is provided with fuel inlet 1e, an air compartment 1d is provided with bottom it, one time air compartment 1d is provided with First air entrance 1b, its top exhanst gas outlet is connected by the input of flue with cyclone separator 1c, the bottom of cyclone separator 1c is connected with the adiabatic returning charge pipeline towards biomass recirculating fluidized bed boiler 1, the top exhanst gas outlet of cyclone separator 1c is connected by the import of flue with deduster 2, the outlet of deduster 2 is divided into two-way, communicate with chimney 3 and First air entrance 1b respectively.Meanwhile, the flue that deduster 2 leads to First air entrance 1b is provided with flow control valve.And Secondary Air entrance 1a place is provided with denitrogenation reductant nozzle.
The method that the present invention reduces biomass recirculating fluidized bed boiler discharged nitrous oxides is achieved in that
First, biomass fuel enters biomass recirculating fluidized bed boiler 1 from fuel inlet 1e, burn, the flue gas produced enters cyclone separator 1c from boiler top, unburnt biomass fuel is separated, and turned back in boiler by adiabatic returning charge pipeline and rekindle, import deduster 2 from the isolated flue gas of cyclone separator 1c, remove the dust impurities of the wherein overwhelming majority, obtain comparatively clean flue gas, a part in the flue gas that gained is comparatively clean leads to chimney 3, enters air; Residue flue gas is incorporated into an air compartment 1d from the First air entrance 1b of biomass recirculating fluidized bed boiler 1 and circulates, and to reduce the oxygen content of First air, and then reduces the combustion temperature in hearth of biomass recirculating fluidized bed boiler 1.Introduce an air compartment 1d exhaust gas volumn can by being arranged on deduster 2, the flow control valve led on the flue of First air entrance 1b adjust according to actual condition, burner hearth bottom is made to be in oxygen debt fired state, thus make fuel inlet 1e place fire box temperature control in the scope of 800 ~ 900 DEG C, avoid the generation of local detonation, overtemperature, reduce the generation of fuel bound nitrogen, reduce the slagging scorification of fuel, agglomerate, improve the thermal efficiency of boiler.
Meanwhile, denitrogenation reducing agent is sprayed by the Secondary Air entrance 1a of biomass recirculating fluidized bed boiler 1, burner hearth is imported after mixing with Secondary Air, utilize Secondary Air that the denitrogenation reducing agent of atomization is fully mixed with the flue gas in burner hearth, and then make nitrogen oxide wherein and denitrogenation reducing agent generation chemical reaction and be removed.Denitrogenation reducing agent can select the one in aqueous solution of urea, ammoniacal liquor, amine compound aqueous solution, and the percent concentration of each solution is 40% ~ 60%.In the present embodiment, preferred mass percent concentration is the aqueous solution of urea of 50%.It is 100 ~ 1000 μm of atomized drop particles that this aqueous solution of urea is atomized into average diameter by spray regime, Secondary Air is utilized fully to mix with flue gas, dense due to aqueous solution of urea, water content is little, thus avoiding a large amount of moisture content makes the heat of heat smoke by the too much deficiency of the latent heat of vaporization consumption of water, makes boiler can not lower efficiency because spraying into a large amount of water simultaneously.Temperature when being sprayed into by adjustment Secondary Air, control the fire box temperature at the Secondary Air entrance 1a place of biomass recirculating fluidized bed boiler 1 in the scope of 800 ~ 900 DEG C, and the time of staying of aqueous solution of urea and reaction of nitrogen oxides is controlled in the scope of 0.5 ~ 1s, such aqueous solution of urea fully reacts with the nitrogen oxide in burner hearth, reduce the nitrogen oxide in biomass recirculating fluidized bed boiler 1 emission to greatest extent, thus while free from environmental pollution, ensure the thermal efficiency of biomass recirculating fluidized bed boiler 1.

Claims (3)

1. reduce a method for biomass recirculating fluidized bed boiler discharged nitrous oxides, comprise the following steps:
1) flue gas of being discharged by biomass recirculating fluidized bed boiler (1) imports in deduster (2), removes the dust impurities of the wherein overwhelming majority, obtains comparatively clean flue gas;
2) part in flue gas comparatively clean for gained is incorporated into an air compartment (1d) from the First air entrance (1b) of biomass recirculating fluidized bed boiler (1) circulates, to reduce the oxygen content of First air, and then reduce the combustion temperature in hearth of biomass recirculating fluidized bed boiler (1); Wherein, by adjusting the amount of circulating gas be incorporated in an air compartment (1d), make burner hearth bottom be in oxygen debt fired state, control fuel inlet (1e) the place fire box temperature of biomass recirculating fluidized bed boiler (1) in the scope of 800 ~ 900 DEG C;
3) meanwhile, denitrogenation reducing agent is sprayed into wherein from the Secondary Air entrance (1a) of biomass recirculating fluidized bed boiler (1), utilize Secondary Air that the denitrogenation reducing agent of atomization is fully mixed with the flue gas in burner hearth, and then make nitrogen oxide wherein and denitrogenation reducing agent generation chemical reaction and be removed; Wherein, denitrogenation reducing agent adopts the one in aqueous solution of urea, ammonia spirit, amine compound aqueous solution, and the mass percent concentration of solution is 40 ~ 60%; Further, temperature when being sprayed into by adjustment Secondary Air, controls the fire box temperature at Secondary Air entrance (1a) place of biomass recirculating fluidized bed boiler (1) also in the scope of 800 ~ 900 DEG C.
2. the method for reduction biomass recirculating fluidized bed boiler discharged nitrous oxides according to claim 1, is characterized in that: described step 3) in, the average diameter of denitrogenation reducing agent droplet particle is 100 ~ 1000 μm.
3. the method for reduction biomass recirculating fluidized bed boiler discharged nitrous oxides according to claim 1 and 2, it is characterized in that: described step 3) in, the time of staying of interior for biomass recirculating fluidized bed boiler (1) denitrogenation reducing agent and reaction of nitrogen oxides is controlled in the scope of 0.5 ~ 2s.
CN201210434773.1A 2012-11-02 2012-11-02 Reduce the method for biomass recirculating fluidized bed boiler discharged nitrous oxides Active CN102966945B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201210434773.1A CN102966945B (en) 2012-11-02 2012-11-02 Reduce the method for biomass recirculating fluidized bed boiler discharged nitrous oxides
PCT/CN2013/085560 WO2014067405A1 (en) 2012-11-02 2013-10-21 Method for reducing nitrogen oxide discharge of biomass circulating fluidized bed boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210434773.1A CN102966945B (en) 2012-11-02 2012-11-02 Reduce the method for biomass recirculating fluidized bed boiler discharged nitrous oxides

Publications (2)

Publication Number Publication Date
CN102966945A CN102966945A (en) 2013-03-13
CN102966945B true CN102966945B (en) 2016-03-02

Family

ID=47797261

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210434773.1A Active CN102966945B (en) 2012-11-02 2012-11-02 Reduce the method for biomass recirculating fluidized bed boiler discharged nitrous oxides

Country Status (2)

Country Link
CN (1) CN102966945B (en)
WO (1) WO2014067405A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102966945B (en) * 2012-11-02 2016-03-02 阳光凯迪新能源集团有限公司 Reduce the method for biomass recirculating fluidized bed boiler discharged nitrous oxides
CN104006377A (en) * 2014-03-04 2014-08-27 郭继会 Treatment method for realizing zero release of fuel coal smoke dust in atmosphere
CN104331736B (en) * 2014-11-13 2018-06-22 国家电网公司 Ultra-supercritical boiler NOx emission dynamic prediction method based on RBF neural
FR3037059B1 (en) * 2015-06-02 2017-06-16 Saint-Gobain Emballage SONIC INJECTION OVEN
CN105066118B (en) * 2015-09-07 2017-11-14 王泽� The efficient low-NO_x burner high-temperature flue gas mingled burning installation of meager coal
CN107339691A (en) * 2017-06-20 2017-11-10 神华集团有限责任公司 A kind of combustion system of circulating fluidized bed boiler and burning process
CN107376621A (en) * 2017-08-15 2017-11-24 深圳市特种设备安全检验研究院 Denitrogenation method and system in biomass Industrial Boiler stove
CN110486747A (en) * 2018-05-15 2019-11-22 合肥硕森科技有限公司 A kind of Secondary Air blowing system of the biomass boiler based on numerical control
CN108905590B (en) * 2018-08-13 2023-05-12 中国华能集团有限公司 Denitration system and method for low-nitrogen burner of power station boiler in cooperation with high-temperature ammonia injection
CN111720815A (en) * 2020-01-17 2020-09-29 太仓新瑞节能设备有限公司 Integrated biomass gasification low-nitrogen and oxygen-poor combustion boiler
CN111558286A (en) * 2020-05-12 2020-08-21 江苏峰峰鸿运环保科技发展有限公司 SNCR-SCR combined denitration method and device
CN114250092B (en) * 2022-01-12 2023-04-25 清华大学 System and method for reducing emission of low-concentration combustible gas

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002090829A1 (en) * 2001-05-09 2002-11-14 Fortum Oyj Method and arrangement for reducing nitrogen oxide emissions froma fluidized bed combustion
CN101482262A (en) * 2009-02-04 2009-07-15 哈尔滨工业大学 Lignite boiler combustion method capable of reducing nitrogen oxide emission
CN101592336A (en) * 2009-07-06 2009-12-02 宁波怡诺能源科技有限公司 A kind of fluidized-bed combustion boiler
CN102252324A (en) * 2011-05-16 2011-11-23 徐州燃控科技股份有限公司 Method for combusting fuel reburning low-nitrogen oxide

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202884903U (en) * 2012-11-02 2013-04-17 阳光凯迪新能源集团有限公司 Biomass circulating fluidized bed combustion equipment with low nitrogen oxide emission
CN102966945B (en) * 2012-11-02 2016-03-02 阳光凯迪新能源集团有限公司 Reduce the method for biomass recirculating fluidized bed boiler discharged nitrous oxides

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002090829A1 (en) * 2001-05-09 2002-11-14 Fortum Oyj Method and arrangement for reducing nitrogen oxide emissions froma fluidized bed combustion
CN101482262A (en) * 2009-02-04 2009-07-15 哈尔滨工业大学 Lignite boiler combustion method capable of reducing nitrogen oxide emission
CN101592336A (en) * 2009-07-06 2009-12-02 宁波怡诺能源科技有限公司 A kind of fluidized-bed combustion boiler
CN102252324A (en) * 2011-05-16 2011-11-23 徐州燃控科技股份有限公司 Method for combusting fuel reburning low-nitrogen oxide

Also Published As

Publication number Publication date
CN102966945A (en) 2013-03-13
WO2014067405A1 (en) 2014-05-08

Similar Documents

Publication Publication Date Title
CN102966945B (en) Reduce the method for biomass recirculating fluidized bed boiler discharged nitrous oxides
CN202884903U (en) Biomass circulating fluidized bed combustion equipment with low nitrogen oxide emission
CN203836944U (en) SNCR-SCR mixed denitration system of circulating fluidized bed boiler
CN102179171B (en) Multi-stage themolysis coupled denitration method using front flow field uniformizing device and device thereof
CN204400906U (en) Pulverized coal pyrolysis pollutant disposal system and boiler combustion system
CN203810391U (en) Novel ultra-low emission power generation system by burning low-calorific value fuel
CN101773781B (en) Method for realizing SNCR and SCR combined denitration by using coal-fired boiler
CN101721904A (en) Composite denitration method by biomass direct reburning and selective non-catalytic reduction
CN107213771A (en) The biomass direct-fired device that flue gas recirculation and SNCR are combined
CN101050853B (en) Method for reducing nitrogen oxide of powder coal boiler mixed burning gas fuel
CN203829911U (en) SNCR (selective non-catalytic reduction) denitration system of circulating fluidized bed boiler
CN104266217B (en) A kind of grate furnace multipath denitrating system and method for denitration thereof
CN202868674U (en) High-efficiency low-energy-consumption smoke denitration device of circulating fluidized bed boiler
CN103263828A (en) Fume gas denitration system of coal-fired boiler based on SNCR (Selective Non-catalytic Reduction) and SCR (Selective Catalytic Reduction) combination method
CN104214767B (en) A kind of method and device of biomass reduction coal-burned industrial boiler flue gas nitrogen oxide
CN103900076B (en) A kind of minimum discharge electricity generation system using low calorie fuels
CN202983499U (en) Industry furnace selective non-catalytic reduction (SNCR) denitration device based on computational fluid dynamics (CFD)
CN103768933B (en) A kind of flue-gas denitration process of FCC apparatus CO waste heat boiler
CN102350211B (en) Three-stage desulfurization device for circulating fluidized bed boiler
CN103175408A (en) Industrial furnace comprehensive energy saving and emission reduction integrated system
CN208878272U (en) A kind of denitrating system of station boiler low NO collaboration high temperature spray ammonia
CN204328994U (en) Biomass boiler equipment for denitrifying flue gas
CN203829912U (en) Flue gas denitration system of CFB furnace
CN206386910U (en) A kind of system of W types boiler low nitrogen burning coordinated desulfurization waste water evaporation
CN101016986A (en) Method for burning of low nitrogen oxides in coal-burning boiler

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
PP01 Preservation of patent right
PP01 Preservation of patent right

Effective date of registration: 20180628

Granted publication date: 20160302

PD01 Discharge of preservation of patent
PD01 Discharge of preservation of patent

Date of cancellation: 20210628

Granted publication date: 20160302

PP01 Preservation of patent right
PP01 Preservation of patent right

Effective date of registration: 20210628

Granted publication date: 20160302