CN106556004A - A kind of method that NOx emission control is reduced during firing biomass fuel - Google Patents
A kind of method that NOx emission control is reduced during firing biomass fuel Download PDFInfo
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- CN106556004A CN106556004A CN201611046745.7A CN201611046745A CN106556004A CN 106556004 A CN106556004 A CN 106556004A CN 201611046745 A CN201611046745 A CN 201611046745A CN 106556004 A CN106556004 A CN 106556004A
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- nox
- gas
- gases
- nox gases
- burning
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B90/00—Combustion methods not related to a particular type of apparatus
- F23B90/04—Combustion methods not related to a particular type of apparatus including secondary combustion
- F23B90/06—Combustion methods not related to a particular type of apparatus including secondary combustion the primary combustion being a gasification or pyrolysis in a reductive atmosphere
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
-
- 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
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2217/00—Intercepting solids
- F23J2217/10—Intercepting solids by filters
-
- 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
Abstract
The invention discloses a kind of method that NOx emission control is reduced during firing biomass fuel, during the firing biomass fuel, the method for reduction NOx emission control is comprised the following steps that：The collection of S1 gas pressurizeds, S2 NOx dedustings, S3 NOx gas filtrations cooling, the burning again of S4 NOx gases, the process of S5 products, S6NOx gases reprocessing, S7 vent gas treatments.The present invention can consume the recyclable tail gas of substantial amounts of NOx, prevent substantial amounts of NOx emission in air, effectively prevent the formation of acid rain, protect environment, meet the demand of present development.
Description
Technical field
The present invention relates to NOx emission control is reduced during environmental technology field, more particularly to a kind of firing biomass fuel
The method of system.
Background technology
With biomass formed fuel stove as object, use corn straw and wooden shaped fuel respectively, analyze its igniting and
The emission equivalent of flame-out process contaminant (NOx, CO).Result of the test shows：Ignition process, the average emission concentration ratio of NOx are steady
It is low during state, and it is high during the average emission concentration ratio stable state of CO.Black furnace ignition process, uses corn straw molding combustion
Material, the mass ratio of CO and NOx have exponent relation reductions with exhaust gas temperature, use the mass ratio of wooden shaped fuel, CO and NOx with
Exhaust gas temperature reduces in power relation.By the way of hot furnace igniting, the concentration of emission of CO reduces half or so, for different
Fuel reduces discharging NOx and will take different measures.Flame-out process, the average emission concentration of NOx are very low, and the average emission concentration of CO
It it is 4 times of stable state or so, therefore, it is proposed to the method for NOx emission control is reduced during a kind of firing biomass fuel.
The content of the invention
The invention aims to shortcoming present in prior art is solved, and a kind of firing biomass fuel for proposing
During reduce NOx emission control method.
To achieve these goals, present invention employs following technical scheme：
A kind of method that NOx emission control is reduced during firing biomass fuel, comprises the steps：
S1, gas pressurized are collected：Biomass burning burner outlet flue is linked into into the air inlet of large-scale smoke extractor, and
The NOx gases that first time burning is produced are collected by large-scale smoke extractor, and the temperature of NOx gases, and temperature are controlled in smoking
Spend for 70-130 degree Celsius, pressurized treatments are carried out to which by pressue device；
S2, NOx dedusting：NOx gases after processing in S1 are passed in cleaner unit, are removed in cleaner unit
Dirt, and the efficiency of dust collection of cleaner unit should be not less than 90%, and big dust particle in NOx gases is removed, to protect the clean of NOx gases
Rate；
S3, NOx gas filtration is lowered the temperature：NOx gases after processing in S2 are passed in gas-filtering device, by gas
Defecator further removes the dust in NOx gases, and in gas-filtering device is reduced to the temperature of NOx gases
30-50 degree Celsius；
S4, NOx gas burns again：NOx gases after processing in S3 are passed through in burner, and in the same of burning
When, methane Organic substance and carbon monoxide are passed through in burner, and generate nitrogen gas and water and carbon dioxide at the same time, and burnt
Temperature is 950-1350 degree Celsius；
S5, product process：After the nitrogen gas and water generated in S4 is filtered with purifying carbon dioxide, discharge,；
S6, NOx gas is reprocessed：The second-time burning that remaining NOx gases in S4 are carried out again is processed, and in burning
During, ammonia catalyst is sprayed into in burner, the denitration rate for enabling to NOx gases reaches 90 percent, and fires
It is 1300-1550 degree Celsius to burn temperature；
S7, vent gas treatment：By in S6 process after NOx gas surplus thing aeration towers in, by the recirculated water in aeration tower
Further the residue in NOx gases is removed, after adsorption filtration, you can discharge.
Preferably, the large-scale smoke extractor is frequency conversion smoke extractor.
Preferably, used in the adsorption filtration absorption or the adsorption filtration diameter of defecator is 2-3nm.
Preferably, the biomass before combustion, are pressed into the burning particles of 1-3cm.
The method that NOx emission control is reduced during a kind of firing biomass fuel that the present invention is provided, the present invention can
The recyclable tail gas of substantial amounts of NOx is consumed, is prevented substantial amounts of NOx emission in air, be effectively prevent the formation of acid rain, protect
Environment, meets the demand of present development.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with specific embodiment, to this
Invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
Embodiment 1
A kind of method that NOx emission control is reduced during firing biomass fuel, comprises the steps：
S1, gas pressurized are collected：Biomass burning burner outlet flue is linked into into the air inlet of large-scale smoke extractor, and
The NOx gases that first time burning is produced are collected by large-scale smoke extractor, and the temperature of NOx gases, and temperature are controlled in smoking
Spend for 70 degrees Celsius, pressurized treatments are carried out by pressue device to which, and large-scale smoke extractor is frequency conversion smoke extractor；
S2, NOx dedusting：NOx gases after processing in S1 are passed in cleaner unit, are removed in cleaner unit
Dirt, and the efficiency of dust collection of cleaner unit should be not less than 90%, and big dust particle in NOx gases is removed, to protect the clean of NOx gases
Rate；
S3, NOx gas filtration is lowered the temperature：NOx gases after processing in S2 are passed in gas-filtering device, by gas
Defecator further removes the dust in NOx gases, and the temperature of NOx gases is reduced to 30 in gas-filtering device
Degree Celsius；
S4, NOx gas burns again：NOx gases after processing in S3 are passed through in burner, and in the same of burning
When, methane Organic substance and carbon monoxide are passed through in burner, and generate nitrogen gas and water and carbon dioxide at the same time, and burnt
Temperature is 950 degrees Celsius；
S5, product process：After the nitrogen gas and water generated in S4 is filtered with purifying carbon dioxide, discharge；
S6, NOx gas is reprocessed：The second-time burning that remaining NOx gases in S4 are carried out again is processed, and in burning
During, ammonia catalyst is sprayed into in burner, the denitration rate for enabling to NOx gases reaches 90 percent, and fires
It is 1300 degrees Celsius to burn temperature；
S7, vent gas treatment：By in S7 process after NOx gas surplus thing aeration towers in, by the recirculated water in aeration tower
Further the residue in NOx gases is removed, after adsorption filtration, you can discharge.
Biomass before combustion, are pressed into the burning particles of 1cm, the absorption or defecator used in adsorption filtration
Adsorption filtration diameter is 2nm.
Embodiment 2
A kind of method that NOx emission control is reduced during firing biomass fuel, comprises the steps：
S1, gas pressurized are collected：Biomass burning burner outlet flue is linked into into the air inlet of large-scale smoke extractor, and
The NOx gases that first time burning is produced are collected by large-scale smoke extractor, and the temperature of NOx gases, and temperature are controlled in smoking
Spend for 90 degrees Celsius, pressurized treatments are carried out by pressue device to which, and large-scale smoke extractor is frequency conversion smoke extractor；
S2, NOx dedusting：NOx gases after processing in S1 are passed in cleaner unit, are removed in cleaner unit
Dirt, and the efficiency of dust collection of cleaner unit should be not less than 90%, and big dust particle in NOx gases is removed, to protect the clean of NOx gases
Rate；
S3, NOx gas filtration is lowered the temperature：NOx gases after processing in S2 are passed in gas-filtering device, by gas
Defecator further removes the dust in NOx gases, and the temperature of NOx gases is reduced to 35 in gas-filtering device
Degree Celsius；
S4, NOx gas burns again：NOx gases after processing in S3 are passed through in burner, and in the same of burning
When, methane Organic substance and carbon monoxide are passed through in burner, and generate nitrogen gas and water and carbon dioxide at the same time, and burnt
Temperature is 1000 degrees Celsius；
S5, product process：After the nitrogen gas and water generated in S4 is filtered with purifying carbon dioxide, discharge；
S6, NOx gas is reprocessed：The second-time burning that remaining NOx gases in S4 are carried out again is processed, and in burning
During, ammonia catalyst is sprayed into in burner, the denitration rate for enabling to NOx gases reaches 90 percent, and fires
It is 1350 degrees Celsius to burn temperature；
S7, vent gas treatment：By in S7 process after NOx gas surplus thing aeration towers in, by the recirculated water in aeration tower
Further the residue in NOx gases is removed, after adsorption filtration, you can discharge.
Biomass before combustion, are pressed into the burning particles of 1.5cm, the absorption or defecator used in adsorption filtration
Adsorption filtration diameter be 2.3nm.
Embodiment 3
A kind of method that NOx emission control is reduced during firing biomass fuel, comprises the steps：
S1, gas pressurized are collected：Biomass burning burner outlet flue is linked into into the air inlet of large-scale smoke extractor, and
The NOx gases that first time burning is produced are collected by large-scale smoke extractor, and the temperature of NOx gases, and temperature are controlled in smoking
Spend for 120 degrees Celsius, pressurized treatments are carried out by pressue device to which, and large-scale smoke extractor is frequency conversion smoke extractor；
S2, NOx dedusting：NOx gases after processing in S1 are passed in cleaner unit, are removed in cleaner unit
Dirt, and the efficiency of dust collection of cleaner unit should be not less than 90%, and big dust particle in NOx gases is removed, to protect the clean of NOx gases
Rate；
S3, NOx gas filtration is lowered the temperature：NOx gases after processing in S2 are passed in gas-filtering device, by gas
Defecator further removes the dust in NOx gases, and the temperature of NOx gases is reduced to 45 in gas-filtering device
Degree Celsius；
S4, NOx gas burns again：NOx gases after processing in S3 are passed through in burner, and in the same of burning
When, methane Organic substance and carbon monoxide are passed through in burner, and generate nitrogen gas and water and carbon dioxide at the same time, and burnt
Temperature is 1250 degrees Celsius；
S5, product process：After the nitrogen gas and water generated in S4 is filtered with purifying carbon dioxide, discharge；
S6, NOx gas is reprocessed：The second-time burning that remaining NOx gases in S4 are carried out again is processed, and in burning
During, ammonia catalyst is sprayed into in burner, the denitration rate for enabling to NOx gases reaches 90 percent, and fires
It is 1450 degrees Celsius to burn temperature；
S7, vent gas treatment：By in S7 process after NOx gas surplus thing aeration towers in, by the recirculated water in aeration tower
Further the residue in NOx gases is removed, after adsorption filtration, you can discharge.
Biomass before combustion, are pressed into the burning particles of 2cm, the absorption or defecator used in adsorption filtration
Adsorption filtration diameter is 2.7nm.
Embodiment 4
A kind of method that NOx emission control is reduced during firing biomass fuel, comprises the steps：
S1, gas pressurized are collected：Biomass burning burner outlet flue is linked into into the air inlet of large-scale smoke extractor, and
The NOx gases that first time burning is produced are collected by large-scale smoke extractor, and the temperature of NOx gases, and temperature are controlled in smoking
Spend for 130 degrees Celsius, pressurized treatments are carried out by pressue device to which, and large-scale smoke extractor is frequency conversion smoke extractor；
S2, NOx dedusting：NOx gases after processing in S1 are passed in cleaner unit, are removed in cleaner unit
Dirt, and the efficiency of dust collection of cleaner unit should be not less than 90%, and big dust particle in NOx gases is removed, to protect the clean of NOx gases
Rate；
S3, NOx gas filtration is lowered the temperature：NOx gases after processing in S2 are passed in gas-filtering device, by gas
Defecator further removes the dust in NOx gases, and the temperature of NOx gases is reduced to 50 in gas-filtering device
Degree Celsius；
S4, NOx gas burns again：NOx gases after processing in S3 are passed through in burner, and in the same of burning
When, methane Organic substance and carbon monoxide are passed through in burner, and generate nitrogen gas and water and carbon dioxide at the same time, and burnt
Temperature is 1350 degrees Celsius；
S5, product process：After the nitrogen gas and water generated in S4 is filtered with purifying carbon dioxide, discharge；
S6, NOx gas is reprocessed：The second-time burning that remaining NOx gases in S4 are carried out again is processed, and in burning
During, ammonia catalyst is sprayed into in burner, the denitration rate for enabling to NOx gases reaches 90 percent, and fires
It is 1550 degrees Celsius to burn temperature；
S7, vent gas treatment：By in S7 process after NOx gas surplus thing aeration towers in, by the recirculated water in aeration tower
Further the residue in NOx gases is removed, after adsorption filtration, you can discharge.
Biomass before combustion, are pressed into the burning particles of 3cm, the absorption or defecator used in adsorption filtration
Adsorption filtration diameter is 3nm.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, technology according to the present invention scheme and its
Inventive concept equivalent or change in addition, should all be included within the scope of the present invention.
Claims (4)
1. a kind of method that NOx emission control is reduced during firing biomass fuel, it is characterised in that：Comprise the steps：
S1, gas pressurized are collected：Biomass burning burner outlet flue is linked into into the air inlet of large-scale smoke extractor, and by
The NOx gases that primary combustion is produced are collected by large-scale smoke extractor, and the temperature of NOx gases is controlled in smoking, and temperature is
70-130 degree Celsius, pressurized treatments are carried out to which by pressue device；
S2, NOx dedusting：NOx gases after processing in S1 are passed in cleaner unit, dedusting is carried out in cleaner unit, and
The efficiency of dust collection of cleaner unit should be not less than 90%, and big dust particle in NOx gases is removed, to protect the clean rate of NOx gases；
S3, NOx gas filtration is lowered the temperature：NOx gases after processing in S2 are passed in gas-filtering device, by gas filtration
Device further removes the dust in NOx gases, and the temperature of NOx gases is reduced to 30-50 in gas-filtering device
Degree Celsius；
S4, NOx gas burns again：NOx gases after processing in S3 are passed through in burner, and while burning, to
Methane Organic substance and carbon monoxide are passed through in burner, and generate nitrogen gas and water and carbon dioxide at the same time, and ignition temperature is
950-1350 degree Celsius；
S5, product process：After the nitrogen gas and water generated in S4 is filtered with purifying carbon dioxide, discharge；
S6, NOx gas is reprocessed：The second-time burning that remaining NOx gases in S4 are carried out again is processed, and in the process of burning
In, ammonia catalyst is sprayed into in burner, the denitration rate for enabling to NOx gases reaches 90 percent, and temperature of burning
Spend for 1300-1550 degree Celsius；
S7, vent gas treatment：By in the NOx gas surplus thing aeration towers after processing in S6, enter one by the recirculated water in aeration tower
Walk and the residue in NOx gases is removed, after adsorption filtration, you can discharge.
2. the method that NOx emission control is reduced during firing biomass fuel according to claim 1, its feature exist
In：The large-scale smoke extractor is frequency conversion smoke extractor.
3. the method that NOx emission control is reduced during firing biomass fuel according to claim 1, its feature exist
In：The adsorption filtration diameter of absorption or defecator used in the adsorption filtration is 2-3nm.
4. the method that NOx emission control is reduced during firing biomass fuel according to claim 1, its feature exist
In：The biomass before combustion, are pressed into the burning particles of 1-3cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611046745.7A CN106556004B (en) | 2016-11-23 | 2016-11-23 | A kind of method that firing biomass fuel reduces NOx emission control in the process |
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|---|---|---|---|
| CN201611046745.7A CN106556004B (en) | 2016-11-23 | 2016-11-23 | A kind of method that firing biomass fuel reduces NOx emission control in the process |
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| CN106556004A true CN106556004A (en) | 2017-04-05 |
| CN106556004B CN106556004B (en) | 2019-03-26 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2212506C (en) * | 1996-09-26 | 2000-06-27 | Claude Choquet | Method and apparatus for producing carbon dioxide, fungicidal compounds and thermal energy |
| KR100917426B1 (en) * | 2009-05-01 | 2009-09-14 | 제이에이치개발 주식회사 | Treatment method for land fill gas of organic wast materials |
| CN103418223A (en) * | 2013-07-26 | 2013-12-04 | 新汶矿业集团有限责任公司 | Comprehensive desulphurization technology in coal chemical industry |
| CN104359113A (en) * | 2014-11-04 | 2015-02-18 | 宜兴市智博环境设备有限公司 | Waste gas and waste liquid incineration system and method |
| CN104383802A (en) * | 2014-11-06 | 2015-03-04 | 青岛华武橡塑有限公司 | Boiler waste gas purifying method |
| CN106090893A (en) * | 2016-06-29 | 2016-11-09 | 无锡锡能锅炉有限公司 | A kind of high performance clean burning method of coal-burning boiler |
-
2016
- 2016-11-23 CN CN201611046745.7A patent/CN106556004B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2212506C (en) * | 1996-09-26 | 2000-06-27 | Claude Choquet | Method and apparatus for producing carbon dioxide, fungicidal compounds and thermal energy |
| KR100917426B1 (en) * | 2009-05-01 | 2009-09-14 | 제이에이치개발 주식회사 | Treatment method for land fill gas of organic wast materials |
| CN103418223A (en) * | 2013-07-26 | 2013-12-04 | 新汶矿业集团有限责任公司 | Comprehensive desulphurization technology in coal chemical industry |
| CN104359113A (en) * | 2014-11-04 | 2015-02-18 | 宜兴市智博环境设备有限公司 | Waste gas and waste liquid incineration system and method |
| CN104383802A (en) * | 2014-11-06 | 2015-03-04 | 青岛华武橡塑有限公司 | Boiler waste gas purifying method |
| CN106090893A (en) * | 2016-06-29 | 2016-11-09 | 无锡锡能锅炉有限公司 | A kind of high performance clean burning method of coal-burning boiler |
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Address after: 523000 Xia Cao village, Wang Niu Dun Town, Dongguan, Guangdong Applicant after: Dongguan East combustion thermal energy Polytron Technologies Inc Address before: 523000 Xia Cao village, Wang Niu Dun Town, Dongguan, Guangdong Applicant before: Dongguan East burning heat energy technology Co., Ltd. |
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