CN106122943A - A kind of zero-emission combustion method of coal-burning boiler - Google Patents
A kind of zero-emission combustion method of coal-burning boiler Download PDFInfo
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- CN106122943A CN106122943A CN201610492342.9A CN201610492342A CN106122943A CN 106122943 A CN106122943 A CN 106122943A CN 201610492342 A CN201610492342 A CN 201610492342A CN 106122943 A CN106122943 A CN 106122943A
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- Prior art keywords
- burning
- boiler
- burner
- passed
- coal
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Classifications
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- 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
- F23C5/00—Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
- F23C5/08—Disposition of burners
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- 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
- F23C7/00—Combustion apparatus characterised by arrangements for air supply
- F23C7/02—Disposition of air supply not passing through burner
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- 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
- F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
- F23C9/06—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for completing combustion
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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
- F23J7/00—Arrangement of devices for supplying chemicals to fire
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- 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
- F23C2202/00—Fluegas recirculation
- F23C2202/30—Premixing fluegas with combustion air
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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
- F23J2215/00—Preventing emissions
- F23J2215/10—Nitrogen; Compounds thereof
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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
- F23J2215/00—Preventing emissions
- F23J2215/20—Sulfur; Compounds thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
Abstract
The invention discloses the zero-emission combustion method of a kind of coal-burning boiler, comprise the following steps (1): install a burner in boiler side, the exhanst gas outlet of burner connects with boiler furnace；(2): coal dust adds quick lime according to impurity content, salt, gangue mix and be pressed into briquette, put in burner and burn；During burning, being passed through comburant in burner, after briquette mixes with air and comburant and fully burns, the high-temperature flue gas of generation is passed through boiler furnace；(3): in the middle part forced air supply of boiler furnace, high-temperature flue gas carries out second-time burning with the air being blown into burner hearth in burner hearth after mixing, and the heat energy that burning produces is delivered to heating system；(4): the waste gas that burning produces is passed through exhaust fume catalytic resolution process device, after waste gas is decomposed into fuel gas, it is passed into the air inlet of boiler forced air-supply.Second-time burning, it is ensured that coal-fired abundant burning, and realize the combustion purpose of chimney-free zero-emission, protect air ambient, high-efficiency environment friendly.
Description
Technical field
The present invention relates to a kind of boiler combustion method, refer specifically to the zero-emission combustion method of a kind of coal-burning boiler.
Background technology
Being widely used owing to coal-burning boiler has efficient, cheap feature, traditional coal burning mode is at coal
Combustion process can produce substantial amounts of pollutant, cause serious environmental pollution.Main cause has: one, and coal is difficult to empty
Gas is fully contacted and causes imperfect combustion, and efficiency of combustion is low, not only wastes coal resources, also relative to add pollutant
Discharge.Its two, combustion process is wayward, such as often for hypoxgia when fugitive constituent separates out in a large number, cause flue dust separate out with
Over-emitting black exhaust；During solid fuel ignition, temperature is difficult to uniformly, be easily formed district of localized hyperthermia, promotes a large amount of NOx to be formed；The most both wasted
The energy also gives environment.Its three, heat utilization rate is low, loss is serious, does not meets existing energy-saving and emission-reduction, high-efficiency environment friendly
Demand for development.
Summary of the invention
For above-mentioned technical problem, the invention provides the zero-emission combustion method of a kind of coal-burning boiler, it is achieved coal exists
Fully burning in stove, efficiency of combustion is high, and fuel availability is high, zero-emission, free of contamination purpose.
The present invention is achieved through the following technical solutions above-mentioned purpose:
The zero-emission combustion method of a kind of coal-burning boiler, specifically includes following steps:
: install a burner in furnace wall, boiler side, the exhanst gas outlet of burner connects with boiler furnace；
: coal dust adds quick lime according to impurity content, salt, gangue mix and be pressed into briquette, and briquette is put into burner
Middle burning；During burning, in burner, it is passed through comburant, after briquette mixes with air and comburant and fully burns,
The high-temperature flue gas of generation is passed through boiler furnace；
: in the middle part forced air supply of boiler furnace, high-temperature flue gas carries out two after mixing with the air being blown into burner hearth in burner hearth
Secondary burning, the heat energy that burning produces is delivered to heating system；
: the waste gas that burning produces is passed through exhaust fume catalytic resolution process device, after waste gas is decomposed into fuel gas, is passed into pot
The air inlet of stove forced air supply.
Preferably, described comburant is granular material or the mixture of granular material or liquefied mixture.
Preferably, the composition of described comburant is chlorate or permanganate or nitrate or a combination thereof thing.
Preferably, the gas sending into boiler furnace is preheated in advance by boiler in the way of annular air inlet, makes gas
Temperature can reach 200～450 DEG C.
Preferably, burner it is passed through the high-temperature flue gas flow of boiler furnace controlled.
Preferably, described boiler furnace being provided with temperature detection sensor, its transmission temperature signal is to controller, by controlling
The amount of the comburant that device processed control is passed through in burner and the amount of the air being passed through in boiler furnace.
The invention has the beneficial effects as follows:
1, fuel burns in the burner, and burner is primary zone, and boiler furnace is the intermediate zone of high-temperature flue gas, and can rise
Increase the purpose of burning to dilatation, effectively realize coal-fired abundant burning, reduce the discharge of the dusty gass such as nitrogen oxides；
2, in burner, forced air inlet in comburant and burner hearth it is passed through, it is ensured that burning is carried out in oxygen enriched environment, enters one
Step ensure that the abundant burning of fuel；
3, after the waste gas that boiler combustion produces being decomposed into fuel gas, it is passed into the air inlet of boiler forced air-supply, it is achieved nothing
The combustion purpose of chimney zero-emission, externally without any pollution and discharge, protects air ambient；
4, rational in infrastructure, energy-conserving and environment-protective, significantly reduce the discharge of the dusty gas such as nitrogen oxides, sulfide.
Detailed description of the invention
Below in conjunction with embodiment, the present invention and effect thereof are further elaborated.
The zero-emission combustion method of a kind of coal-burning boiler, specifically includes following steps:
: install a burner in furnace wall, boiler side, the exhanst gas outlet of burner connects with boiler furnace；
: coal dust adds quick lime according to impurity content, salt, gangue mix and be pressed into briquette, is set by conveying by briquette
Standby input in burner is burnt；During burning, being passed through comburant in burner, briquette mixes also with air and comburant
Fully after burning, the high-temperature flue gas of generation is passed through boiler furnace；Wherein, comburant is the mixed of granular material or granular material
Compound or liquefied mixture, such as chlorate or permanganate or nitrate or a combination thereof thing, it is also possible to be hydrogenperoxide steam generator.
: in the middle part forced air supply of boiler furnace, high-temperature flue gas enters after mixing with the air being blown into burner hearth in burner hearth
Row second-time burning, the heat energy that burning produces is delivered to heating system；
: the waste gas that burning produces is passed through exhaust fume catalytic resolution process device, after waste gas is decomposed into fuel gas, is passed into
The air inlet of boiler forced air-supply, recycles, thus realizes the combustion purpose of chimney-free zero-emission；Specifically, by waste gas
Dusty gas be decomposed into fuel gas, such as, by the CO in waste gas2、H2O、NO2、SO2Etc. being decomposed into H2、O2、CO、C、NO、S、
OH―After fuel gas or material, it is recycled to the air inlet of boiler forced air-supply by pipeline, after mixing with air, is passed through boiler
In burner hearth, it is achieved recycle.Wherein, the air gas mixture sending into boiler furnace is entered by boiler in the way of annular air inlet
Row preheats in advance, makes air themperature can reach 200～450 DEG C, and in improving boiler further, high temperature air fully burns.
Preferably, smoke flow control valve door is set in the exhaust gases passes between burner and boiler furnace, reaches flue gas
The purpose that flow is controlled, it is ensured that fully burn.Further, boiler furnace being provided with temperature detection sensor, it sends temperature
Degree signal is to controller, controller the control amount of the comburant being passed through in burner and the air being passed through in boiler furnace
Amount.
Fuel of the present invention burns in the burner, and burner is primary zone, and boiler furnace is the second-time burning of high-temperature flue gas
District, and the purpose of dilatation increase burning can be played, effectively realize coal-fired fully burning, reduce the dusty gass such as nitrogen oxides
Discharge；Forced air inlet in comburant and burner hearth it is passed through, it is ensured that burning is carried out in oxygen enriched environment, enters one in burner
Step ensure that the abundant burning of fuel；The combustion method of chimney-free zero-emission of the present invention is externally without any pollution and discharge, protection
Air ambient；Additionally, realize totally-enclosed burning, it is achieved subset activated water participates in burning all the time, it is greatly prolonged carbon element combustion
The burning time.Rational in infrastructure, energy-conserving and environment-protective, significantly reduce the discharge of the dusty gas such as nitrogen oxides, sulfide, have preferably
Market using value, is suitable to popularization and application.
Above example is only exemplary, can't limit to the present invention, it should be pointed out that for those skilled in the art
For, under technology provided by the present invention is enlightened, other equivalent modifications made and improvement, it is regarded as the guarantor of the present invention
Protect scope.
Claims (6)
1. the zero-emission combustion method of a coal-burning boiler, it is characterised in that: specifically include following steps:
: install a burner in furnace wall, boiler side, the exhanst gas outlet of burner connects with boiler furnace；
: coal dust adds quick lime according to impurity content, salt, gangue mix and be pressed into briquette, is put in burner by briquette
Burning；During burning, in burner, it is passed through comburant, after briquette mixes with air and comburant and fully burns, will
The high-temperature flue gas produced is passed through boiler furnace；
: in the middle part forced air supply of boiler furnace, high-temperature flue gas carries out secondary after mixing with the air being blown into burner hearth in burner hearth
Burning, the heat energy that burning produces is delivered to heating system；
: the waste gas that burning produces is passed through exhaust fume catalytic resolution process device, after waste gas is decomposed into fuel gas, is passed into boiler
The air inlet of forced air supply.
The zero-emission combustion method of a kind of coal-burning boiler the most according to claim 1, it is characterised in that: described comburant
For granular material or the mixture of granular material or liquefied mixture.
The zero-emission combustion method of a kind of coal-burning boiler the most according to claim 2, it is characterised in that: described comburant
Composition be chlorate or permanganate or nitrate or a combination thereof thing.
The zero-emission combustion method of a kind of coal-burning boiler the most according to claim 1, it is characterised in that: send into boiler furnace
Gas by annular air inlet in the way of preheated in advance by boiler, make gas temperature can reach 200～450 DEG C.
5. according to the zero-emission combustion method of the arbitrary described a kind of coal-burning boiler of claim 1-4, it is characterised in that: by burning
The high-temperature flue gas flow that device is passed through boiler furnace is controlled.
The zero-emission combustion method of a kind of coal-burning boiler the most according to claim 1, it is characterised in that: described boiler furnace
On temperature detection sensor is installed, it sends temperature signal to controller, controller control the burning being passed through in burner
The amount of auxiliary agent and the amount of air being passed through in boiler furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610492342.9A CN106122943A (en) | 2016-06-29 | 2016-06-29 | A kind of zero-emission combustion method of coal-burning boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610492342.9A CN106122943A (en) | 2016-06-29 | 2016-06-29 | A kind of zero-emission combustion method of coal-burning boiler |
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| CN106122943A true CN106122943A (en) | 2016-11-16 |
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| CN201610492342.9A Pending CN106122943A (en) | 2016-06-29 | 2016-06-29 | A kind of zero-emission combustion method of coal-burning boiler |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101250452A (en) * | 2008-04-01 | 2008-08-27 | 本溪市鹤腾铁塑制品厂 | Additive for making coal briquette |
| CN101334164A (en) * | 2008-07-28 | 2008-12-31 | 上海题桥纺织染纱有限公司 | Industrial boiler combustion method |
| CN202074693U (en) * | 2011-05-24 | 2011-12-14 | 中铁隆昌铁路器材有限公司 | Combustible waste gas reuse hot blast stove |
| CN202927834U (en) * | 2012-10-16 | 2013-05-08 | 天津市滨海新区塘沽宏丰锅炉制造有限公司 | Boiler energy saving device |
| US20130244187A1 (en) * | 2012-03-19 | 2013-09-19 | Honeywell International Inc. | HIGH EFFICIENCY LOW NOx EMISSION BURNER APPARATUS |
| CN204358710U (en) * | 2014-11-17 | 2015-05-27 | 北京联优创展科技有限公司 | Fire coal boiler fume backflow aftercombustion device |
| CN104711073A (en) * | 2015-03-25 | 2015-06-17 | 张春山 | Coal combustion adjuvant and preparation method thereof |
| CN205299486U (en) * | 2015-11-20 | 2016-06-08 | 邱如罡 | Domestic heating installation exhaust gas of boiler circulating device |
-
2016
- 2016-06-29 CN CN201610492342.9A patent/CN106122943A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101250452A (en) * | 2008-04-01 | 2008-08-27 | 本溪市鹤腾铁塑制品厂 | Additive for making coal briquette |
| CN101334164A (en) * | 2008-07-28 | 2008-12-31 | 上海题桥纺织染纱有限公司 | Industrial boiler combustion method |
| CN202074693U (en) * | 2011-05-24 | 2011-12-14 | 中铁隆昌铁路器材有限公司 | Combustible waste gas reuse hot blast stove |
| US20130244187A1 (en) * | 2012-03-19 | 2013-09-19 | Honeywell International Inc. | HIGH EFFICIENCY LOW NOx EMISSION BURNER APPARATUS |
| CN202927834U (en) * | 2012-10-16 | 2013-05-08 | 天津市滨海新区塘沽宏丰锅炉制造有限公司 | Boiler energy saving device |
| CN204358710U (en) * | 2014-11-17 | 2015-05-27 | 北京联优创展科技有限公司 | Fire coal boiler fume backflow aftercombustion device |
| CN104711073A (en) * | 2015-03-25 | 2015-06-17 | 张春山 | Coal combustion adjuvant and preparation method thereof |
| CN205299486U (en) * | 2015-11-20 | 2016-06-08 | 邱如罡 | Domestic heating installation exhaust gas of boiler circulating device |
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Application publication date: 20161116 |
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| RJ01 | Rejection of invention patent application after publication |