CN108716688A - A kind of coal-burning boiler and method of flue gas nitrogen oxide low emission - Google Patents

A kind of coal-burning boiler and method of flue gas nitrogen oxide low emission Download PDF

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Publication number
CN108716688A
CN108716688A CN201810674147.7A CN201810674147A CN108716688A CN 108716688 A CN108716688 A CN 108716688A CN 201810674147 A CN201810674147 A CN 201810674147A CN 108716688 A CN108716688 A CN 108716688A
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coal
flue gas
nitrogen oxides
low
reducing agent
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Chinese (zh)
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郑毅
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BEIJING LANDMARK ENGINEERING Co Ltd
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BEIJING LANDMARK ENGINEERING Co Ltd
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Publication of CN108716688A publication Critical patent/CN108716688A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/003—Arrangements of devices for treating smoke or fumes for supplying chemicals to fumes, e.g. using injection devices
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
    • F22B31/08—Installation of heat-exchange apparatus or of means in boilers for heating air supplied for combustion
    • 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
    • F23C10/24—Devices for removal of material from the bed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J1/00—Removing ash, clinker, or slag from combustion chambers
    • 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
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
    • 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 
    • F23J2219/00—Treatment devices
    • F23J2219/10—Catalytic reduction devices

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)

Abstract

The present invention relates to energy technology fields, specifically disclose a kind of coal-burning boiler and method of flue gas nitrogen oxide low emission, wherein the burning boiler includes：Burner, high temperature superheater, low temperature superheater, high-temperature economizer, catalytic denitration device, low-level (stack-gas) economizer, preheater.Compared with existing boiler technology, present applicant proposes a kind of new environmental-friendly coal-burning boiler, can disposable meet the requirement of environmental protection, eliminate the environmental transformation engineering after project construction.Coal-burning boiler proposed by the present invention can reduce system complexity, reduce the link of buying and implementation management in process of construction, reduce the complexity of system after project is gone into operation, it is more convenient for managing concentratedly, Denitration in Boiler, steam supply can all be directly controlled in set of system, avoid boiler producer and environmental transformation producer design concept it is inconsistent caused by construct the problems such as inconvenient, be more advantageous to reduction discharge index, provide that customization is " total " to be serviced for owner.

Description

Coal-fired boiler with low emission of nitrogen oxides in flue gas and method
Technical Field
The invention relates to the technical field of energy, in particular to a coal-fired boiler with low emission of nitrogen oxides in flue gas and a method.
Background
Nitrogen oxides (NOx) are one of the main atmospheric pollutants emitted from coal-fired boilers, and besides forming acid rain and destroying the ecological environment, they can also form photochemical smog, which directly endangers human health. The country from 7.1.2004 charges the unit of the discharged pollutant for 0.6 yuan per pollution equivalent (the emission equivalent of nitrogen oxide is 0.95 kg). Control of NOx emissions from coal-fired boilers is already at issue. The current measures for controlling NOx emission are roughly divided into two categories, one category is low NOx combustion technology, and the low NOx combustion technology mainly comprises low excess air operation technology, flue gas recirculation technology, thick and thin combustion technology, reburning combustion technology and the like. The cost of the reburning technology is the highest in the low NOx combustion technology, the NOx reduction amplitude is the largest and can reach 50%, while other low NOx combustion technologies are generally only 10% -30%, and the effect of the low NOx combustion technology on reducing NOx is limited when anthracite or low-quality bituminous coal with low volatile components is combusted. The other measure for controlling the NOx emission is a flue gas denitrification technology, which has higher denitrification efficiency and is not limited by the burning coal types. Currently used industrially on a large scale are Selective Catalytic Reduction (SCR) technology and selective non-catalytic reduction (SNCR) technology. The SCR technology has high denitration efficiency, but needs a catalyst, so that the system investment is huge and the operation cost is high; the SNCR technology has simple equipment, does not need a catalyst, and has far lower operating cost than the SCR technology.
The SNCR reaction has a temperature window, and can ensure higher denitration efficiency only within the range of 900-1100 ℃, the temperature is higher than 1100 ℃, and NH is carried out3Oxidized to form NOx, NH when the temperature is lower than 900 DEG C3The reaction rate with NOx is low. In the practical application of the SNCR technology, as the heat of the flue gas is absorbed by the heating surface of the boiler along with the flow of the flue gas in the boiler, the temperature of the flue gas is rapidly reduced, the temperature gradient of the flue gas is large, the denitration reaction space in the temperature range of 900-1100 ℃ which can meet the optimal denitration efficiency of the SNCR is limited, and in addition, the mixing process of the amino reducing agent and the flue gas needs longer time (relative to the denitration reaction time), so that the denitration reaction efficiency of the SNCR is limited. Under the conditions of good mixing and proper temperature, the denitration efficiency of an SNCR mechanism experiment can reach 80% -90%, but the denitration rate in the SNCR technical engineering application is lower and is only 30% -50% generally. The Sanjing Babucoke energy company proposed natural gas (CH) injection in the horizontal flue of a boiler4) By means of CH4As an additive, the SNCR reaction can still be carried out at a lower temperature, the integral denitration efficiency is improved, and the technology is named as a Selective Automatic Catalytic Reduction (SACR) technology. Natural gas is a scarce high-quality energy in China, and most power plants in China do not have natural gas resources, so that the application of the technology is limited.
The lowest nitrogen oxide content at the flue gas outlet of the existing coal-fired boiler products such as a pulverized coal furnace, a circulating fluidized bed boiler and the like can reach 250-300 mg/Nm after being matched with a low-nitrogen combustor3About (circulating fluidized bed boiler, pulverized coal furnace about 400mg/Nm3Above), ultra-low emission index cannot be achieved; in addition, the denitration modification of the SNCR \ SCR method is required to be additionally carried out by an owner according to specific working conditions, the investment is large, the occupied area is large, the system is complex, an operating system is usually required to be additionally arranged, the system complexity is increased, and the emission is overproof after conversion caused by the fact that instantaneous oxygen content is overproof due to the fact that the instantaneous oxygen content is easy to conflict with boiler soot blowing.
Disclosure of Invention
In order to implement the environmental laws of the people's republic of China, improve the quality of atmospheric environment and protect the ecological environment, the content of nitrogen oxides at the smoke outlet is reduced to the ultra-low emission standard by a novel internal part layout mode of the coal-fired boiler. In contrast, the reducing agent is fully mixed with the flue gas at a proper temperature window, and reacts with the nitrogen oxides in the flue gas to generate nitrogen and other non-pollution sources.
Specifically, the invention provides a coal-fired boiler with low emission of nitrogen oxides in flue gas, which comprises: the device comprises a combustor, a high-temperature superheater, a low-temperature superheater, a high-temperature economizer, a catalytic denitration device, a low-temperature economizer and a preheater; wherein, the burner is provided with a coal inlet, a primary air inlet, a secondary air inlet and a reducing agent inlet, the coal inlet is used for adding coal, and the coal is burnt in the burner; when the combustor is subjected to secondary air inlet, a reducing agent is added through a reducing agent inlet, and the reducing agent is guided by using secondary air inlet quantity; in the combustion process, the generated flue gas sequentially passes through a high-temperature superheater, a low-temperature superheater, a high-temperature economizer, a catalytic denitration device, a low-temperature economizer and a preheater; wherein, be provided with multilayer catalyst in the catalytic denitrification device for the nitrogen oxide in the desorption flue gas.
In addition, the invention also provides a method for reducing the emission of nitrogen oxides in flue gas, which utilizes the coal-fired boiler with low emission of nitrogen oxides in flue gas to carry out denitration and reduce the emission of nitrogen oxides by the redox reaction between a reducing agent and the nitrogen oxides under the action of a catalyst.
Compared with the prior art, the novel environment-friendly coal-fired boiler can meet the requirement of environmental protection at one time and is free from environmental protection reconstruction engineering after project construction. The coal-fired boiler provided by the invention can reduce the complexity of the system, reduce the links of purchasing and construction management in the construction process, reduce the complexity of the system after project production, is more convenient for centralized management, can directly control the denitration and steam supply of the boiler in one set of system, avoids the problems of inconvenient construction and the like caused by inconsistent design concepts of boiler manufacturers and environment-friendly reconstruction manufacturers, is more beneficial to reducing the emission index, and provides customized 'one package' service for owners.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention.
Fig. 1 is a schematic structural diagram of a coal-fired boiler with low emission of flue gas nitrogen oxides according to an embodiment of the invention.
FIG. 2 is a schematic diagram illustrating the relationship between chemical reactions in a furnace according to an embodiment of the present invention.
Detailed Description
The technical means adopted by the invention to achieve the predetermined object of the invention are further described below with reference to the drawings and the preferred embodiments of the invention.
Fig. 1 is a schematic structural diagram of a coal-fired boiler with low emission of flue gas nitrogen oxides according to an embodiment of the invention. As shown in fig. 1, the coal-fired boiler includes: the device comprises a combustor 1, a high-temperature superheater 2, a low-temperature superheater 3, a high-temperature economizer 4, a catalytic denitration device 5, a low-temperature economizer 6 and a preheater; wherein, the preheater includes: a medium-temperature preheater 7 and a low-temperature preheater 8;
the combustor 1 is provided with a coal inlet, a primary air inlet, a secondary air inlet and a reducing agent inlet, wherein the coal inlet is used for adding coal, and the coal is combusted in the combustor 1; when secondary air inlet is carried out, a reducing agent is added through a reducing agent inlet, and the reducing agent is guided by utilizing secondary air inlet quantity;
in the combustion process, the generated flue gas sequentially passes through a high-temperature superheater 2, a low-temperature superheater 3, a high-temperature economizer 4, a catalytic denitration device 5, a low-temperature economizer 6 and a preheater 7; wherein, be provided with multilayer catalyst in the catalytic denitration device 5 for the nitrogen oxide in the desorption flue gas.
In this embodiment, the catalytic denitration apparatus includes: denitration medium spray gun, catalyst grid, soot blower, catalyst setting are in the catalyst grid. The denitration catalytic device can be adjusted according to the difference of coal types and the difference of emission standards of the site of the project, but the efficiency of the single-layer catalytic denitration section is generally 50-70%.
Specifically, when the reducing agent is introduced into the secondary air, the air quantity of the boiler is not increased, so that the influence of air distribution of the boiler on combustion is not changed, the thermal efficiency of the boiler is not reduced, and the denitration efficiency of the section can reach 50-65%; a catalytic denitration device 5 is arranged at the front section of a low-temperature economizer 6 of the boiler, the denitration efficiency design value of each layer of catalyst is 65%, the nitrogen oxides in the flue gas are further removed to meet the requirement of ultralow emission, and the content of the reducing agent in the flue gas is fully reduced without causing corrosion and blockage to the low-temperature preheater.
A plurality of soot blowers are arranged on the coal-fired boiler; wherein, the soot blower of the catalytic denitration section and other soot blowers are controlled by a controller to run cooperatively. Particularly, the soot blowers are programmed together, so that the problems that the air quantity is insufficient and the soot blowing effect is poor due to the fact that the soot blowers operate simultaneously are avoided, and the situations that the boiler operation parameters are unstable and the like due to the fact that soot blowing is carried out simultaneously are reduced.
In this embodiment, a premixed multi-channel denitration spray gun is arranged at a reducing agent inlet and used for spraying a reducing agent, and the denitration efficiency is 30-60% after the reducing agent is sprayed through the reducing agent inlet. The spray gun is used for spraying the compressed secondary air and the reducing agent into the hearth by utilizing the pressure difference to be fully mixed with the flue gas, and under the action of 850-1050 ℃ and the catalyst (within two temperature windows of 320-400 ℃), the reducing agent and the nitrogen oxide are subjected to oxidation-reduction reaction, so that the nitrogen oxide emission is reduced by denitration. FIG. 2 is a schematic diagram showing the relationship between chemical reactions.
The reducing agent is selected from 5-9% waste ammonia water or urea solution, and the above materials are only exemplary and not limited thereto, and can be freely prepared according to the actual production conditions of owners and local markets.
Having described the combustion boiler of an exemplary embodiment of the present invention, a method for low emission of flue gas nitrogen oxides of an exemplary embodiment of the present invention is described next. The method utilizes the coal-fired boiler with low emission of nitrogen oxides in flue gas, and carries out denitration and reduction of emission of nitrogen oxides through the oxidation-reduction reaction of a reducing agent and the nitrogen oxides under the action of a catalyst.
For a more clear explanation of the above coal-fired boiler and method with low flue gas nitrogen oxide emission, a specific example is described below, however, it should be noted that the example is only for better illustration of the present invention and should not be construed as an undue limitation on the present invention.
2 multiplied by 110t/h circulating fluidized bed boiler of Xinjiang Tianyun company in Xinjiang Diotai county, and the concentration of nitrogen oxide discharged by flue gas is 200mg/Nm by utilizing the combustion boiler with low discharge of nitrogen oxide in flue gas and the method thereof provided by the application3Down to 50mg/Nm3The emission index is satisfied as follows.
Compared with the prior art, the novel environment-friendly coal-fired boiler can meet the requirement of environmental protection at one time and is free from environmental protection reconstruction engineering after project construction. The coal-fired boiler provided by the invention can reduce the complexity of the system, reduce the links of purchasing and construction management in the construction process, reduce the complexity of the system after project production, is more convenient for centralized management, can directly control the denitration and steam supply of the boiler in one set of system, avoids the problems of inconvenient construction and the like caused by inconsistent design concepts of boiler manufacturers and environment-friendly reconstruction manufacturers, is more beneficial to reducing the emission index, and provides customized 'one package' service for owners.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. A coal-fired boiler with low emission of nitrogen oxides in flue gas is characterized by comprising: the device comprises a combustor, a high-temperature superheater, a low-temperature superheater, a high-temperature economizer, a catalytic denitration device, a low-temperature economizer and a preheater; wherein,
the burner is provided with a coal inlet, a primary air inlet, a secondary air inlet and a reducing agent inlet, wherein the coal inlet is used for adding coal, and the coal is combusted in the burner; when the combustor is subjected to secondary air inlet, a reducing agent is added through a reducing agent inlet, and the reducing agent is guided by using secondary air inlet quantity;
in the combustion process, the generated flue gas sequentially passes through a high-temperature superheater, a low-temperature superheater, a high-temperature economizer, a catalytic denitration device, a low-temperature economizer and a preheater; wherein, be provided with multilayer catalyst in the catalytic denitrification device for the nitrogen oxide in the desorption flue gas.
2. The coal-fired boiler with low emission of flue gas nitrogen oxides as claimed in claim 1, characterized in that the catalytic denitration device comprises: denitration medium spray gun, catalyst grid, soot blower, catalyst setting are in the catalyst grid.
3. The coal-fired boiler with low emission of flue gas nitrogen oxides as claimed in claim 2, characterized in that the denitration efficiency of the single-layer catalyst is 65%.
4. The coal-fired boiler with low emission of flue gas nitrogen oxides as claimed in claim 1, characterized in that the preheater comprises: a medium-temperature preheater and a low-temperature preheater.
5. The coal-fired boiler with low emission of smoke nitrogen oxides as claimed in claim 1, characterized in that a plurality of soot blowers are arranged on the coal-fired boiler; wherein, the soot blower of the catalytic denitration section and other soot blowers are controlled by a controller to run cooperatively.
6. The coal-fired boiler with low emission of nitrogen oxides in flue gas as claimed in claim 1, characterized in that a premixed multi-channel denitration spray gun is arranged at a reducing agent inlet for spraying a reducing agent, and the denitration efficiency is 30-60% after the reducing agent is sprayed through the reducing agent inlet.
7. The coal-fired boiler with low emission of nitrogen oxides in flue gas as claimed in claim 6, characterized in that the spray gun is also used for spraying the compressed secondary air and the reducing agent into the hearth by utilizing the pressure difference to be fully mixed with the flue gas, so that the reducing agent and the nitrogen oxides are subjected to oxidation-reduction reaction under the action of the catalyst to carry out denitration and reduce the emission of the nitrogen oxides.
8. The coal-fired boiler with low emission of nitrogen oxides in flue gas as claimed in claim 1, characterized in that the reducing agent is 5-9% of waste ammonia water or urea solution.
9. The coal-fired boiler with low emission of flue gas nitrogen oxides as claimed in claim 1, characterized in that the preheater comprises: a medium-temperature preheater and a low-temperature preheater.
10. The method for reducing the emission of nitrogen oxides in flue gas is characterized in that the coal-fired boiler with low emission of nitrogen oxides in flue gas, which is disclosed by any one of claims 1 to 9, is used for carrying out denitration and reducing the emission of nitrogen oxides by carrying out redox reaction on a reducing agent and the nitrogen oxides under the action of a catalyst.
CN201810674147.7A 2018-06-27 2018-06-27 A kind of coal-burning boiler and method of flue gas nitrogen oxide low emission Pending CN108716688A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110030839A (en) * 2019-04-15 2019-07-19 重庆赛迪热工环保工程技术有限公司 A kind of combination type heating furnace low NOx combustion system and its control method
CN112949981A (en) * 2021-01-29 2021-06-11 国电南京电力试验研究有限公司 Method for evaluating influence of SNCR (selective non-catalytic reduction) system on coal-fired generator set operation economy
CN114225684A (en) * 2021-12-22 2022-03-25 华中科技大学 Method for removing sulfur trioxide in flue gas of coal-fired power plant by using zinc ash of hot galvanizing plant

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CN101773781A (en) * 2010-03-23 2010-07-14 浙江大学 Method for realizing SNCR and SCR combined denitration by using coal-fired boiler
CN102580506A (en) * 2012-03-09 2012-07-18 山东山大华特环保工程有限公司 Inside-mixing type reducing agent atomizing spray gun for SNCR (Selective Non-Catalytic Reduction) denitration process
CN104740984A (en) * 2015-04-16 2015-07-01 江苏中金环保科技有限公司 System and method for removing nitric oxide and dioxin in sintering flue gas
CN204543995U (en) * 2015-03-27 2015-08-12 合肥水泥研究设计院 A kind of cement kiln end low-temperature smoke air SCR denitrification apparatus
CN105485664A (en) * 2015-12-07 2016-04-13 山西大学 Composite denitration method and device
CN206444447U (en) * 2016-12-07 2017-08-29 江西南方环保机械制造总公司 Bioxin Catalytic Reducing Purification device
CN208487632U (en) * 2018-06-27 2019-02-12 北京蓝图工程设计有限公司 A kind of coal-burning boiler of flue gas nitrogen oxide low emission

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Publication number Priority date Publication date Assignee Title
CN101773781A (en) * 2010-03-23 2010-07-14 浙江大学 Method for realizing SNCR and SCR combined denitration by using coal-fired boiler
CN102580506A (en) * 2012-03-09 2012-07-18 山东山大华特环保工程有限公司 Inside-mixing type reducing agent atomizing spray gun for SNCR (Selective Non-Catalytic Reduction) denitration process
CN204543995U (en) * 2015-03-27 2015-08-12 合肥水泥研究设计院 A kind of cement kiln end low-temperature smoke air SCR denitrification apparatus
CN104740984A (en) * 2015-04-16 2015-07-01 江苏中金环保科技有限公司 System and method for removing nitric oxide and dioxin in sintering flue gas
CN105485664A (en) * 2015-12-07 2016-04-13 山西大学 Composite denitration method and device
CN206444447U (en) * 2016-12-07 2017-08-29 江西南方环保机械制造总公司 Bioxin Catalytic Reducing Purification device
CN208487632U (en) * 2018-06-27 2019-02-12 北京蓝图工程设计有限公司 A kind of coal-burning boiler of flue gas nitrogen oxide low emission

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110030839A (en) * 2019-04-15 2019-07-19 重庆赛迪热工环保工程技术有限公司 A kind of combination type heating furnace low NOx combustion system and its control method
CN112949981A (en) * 2021-01-29 2021-06-11 国电南京电力试验研究有限公司 Method for evaluating influence of SNCR (selective non-catalytic reduction) system on coal-fired generator set operation economy
CN112949981B (en) * 2021-01-29 2023-12-26 国能南京电力试验研究有限公司 Evaluation method for influence of SNCR system on operation economy of coal-fired power generation unit
CN114225684A (en) * 2021-12-22 2022-03-25 华中科技大学 Method for removing sulfur trioxide in flue gas of coal-fired power plant by using zinc ash of hot galvanizing plant

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Application publication date: 20181030