CN106196011A - A kind of desulfurizing combustion of coal-burning boiler - Google Patents
A kind of desulfurizing combustion of coal-burning boiler Download PDFInfo
- Publication number
- CN106196011A CN106196011A CN201610492340.XA CN201610492340A CN106196011A CN 106196011 A CN106196011 A CN 106196011A CN 201610492340 A CN201610492340 A CN 201610492340A CN 106196011 A CN106196011 A CN 106196011A
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- Prior art keywords
- burning
- gas
- combustion
- boiler
- coal
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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
- F23B80/00—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel
- F23B80/02—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel by means for returning flue gases to the combustion chamber or to the combustion zone
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- 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
- B01D53/48—Sulfur compounds
-
- 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
- B01D53/81—Solid phase processes
- B01D53/83—Solid phase processes with moving reactants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L1/00—Passages or apertures for delivering primary air for combustion
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/12—Methods and means for introducing reactants
- B01D2259/128—Solid reactants
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Biomedical Technology (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
Abstract
The invention discloses the desulfurizing combustion of a kind of coal-burning boiler, comprise the following steps:: arranging burner and gas solid reactor before boiler, the exhanst gas outlet of burner connects with gas solid reactor, and gas solid reactor connects with boiler furnace again；: first coal dust carries out combustion with meagre oxygen in burner, and the combustion gas that burning generates carries out desulphurization reaction in entering gas solid reactor with the carbon granule not burnt；
Description
Technical field
The present invention relates to a kind of boiler combustion method, refer specifically to the desulfurizing combustion 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.
Summary of the invention
For above-mentioned technical problem, the invention provides the desulfurizing combustion of a kind of coal-burning boiler, it is achieved coal is at stove
Interior fully burning, efficiency of combustion is high, and fuel availability is high, the purpose that Pollution drainage is low.
The present invention is achieved through the following technical solutions above-mentioned purpose:
The desulfurizing combustion of a kind of coal-burning boiler, specifically includes following steps:
: a burner and a gas solid reactor, the exhanst gas outlet of burner and gas solid reactor are set before boiler
Air inlet connects, and the gas outlet of gas solid reactor connects with boiler furnace；
: first coal dust carries out combustion with meagre oxygen in burner, is passed through comburant during burning in burner, and burning generates
Combustion gas with do not burn residue carbon granule together enter equipped with carrying out desulphurization reaction in the gas solid reactor of desulfurizing agent；
: after desulphurization reaction, high-temperature flue gas is passed directly into boiler furnace and carries out second-time burning, strong to the middle part of burner hearth during burning
System air-supply so that high-temperature flue gas mixes fully burning with the air being blown into burner hearth.
Preferably, described gas solid reactor built with desulfurizing agent be the material based on calcium.
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 temperature of the combustion gas entering gas solid reactor and the residue carbon granule not burnt should control at 700 DEG C～
Between 1000 DEG C, the desulfurization gas-solid reactive mode carried out in entering gas solid reactor is fluid bed gas-solid reaction mode.
Preferably, the air sending into boiler furnace is preheated in advance by boiler in the way of annular air inlet, makes air
Temperature can reach 200～450 DEG C.
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, carries out combustion with meagre oxygen in burner, farthest makes the sulfur in coal dust discharge
Come, gas solid reactor removes sulfur-bearing component, there is desulfuration efficiency high, the feature that sorbent utilization is high, control NOx simultaneously
Generation；
2, boiler furnace is the abundant combustion zone of secondary of high-temperature flue gas, and can play the purpose of dilatation increase burning, effectively realizes
Coal-fired abundant burning, reduce further the discharge of sulfide and nitrogen oxides；
3, in burner, forced air inlet in comburant and burner hearth it is passed through, it is ensured that fully burn；
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 desulfurizing combustion of a kind of coal-burning boiler, specifically includes following steps:
: a burner and a gas solid reactor, the exhanst gas outlet of burner and gas solid reactor are set before boiler
Air inlet connects, and the gas outlet of gas solid reactor connects with boiler furnace；
: first coal dust carries out combustion with meagre oxygen in burner, is passed through comburant during burning in burner, and burning generates
Combustion gas with do not burn residue carbon granule together enter equipped with carrying out desulphurization reaction in the gas solid reactor of desulfurizing agent；Can be in burning
Smoke flow control valve door is set in the exhaust gases passes between device and gas solid reactor, between gas solid reactor and boiler furnace,
Reach the purpose that flue gas flow is controlled, it is ensured that fully burn；Wherein, comburant is the mixture of granular material or granular material
Or liquefied mixture, such as chlorate or permanganate or nitrate or a combination thereof thing, it is also possible to be hydrogenperoxide steam generator；Desulfurization
Agent is the material based on calcium.Additionally, the combustion gas entering gas solid reactor should control with the temperature remaining carbon granule not burnt
Between 700 DEG C～1000 DEG C, the desulfurization gas-solid reactive mode carried out in entering gas solid reactor is fluid bed gas-solid reaction
Mode.
: after desulphurization reaction, high-temperature flue gas is passed directly into boiler furnace and carries out second-time burning, to the middle part of burner hearth during burning
Forced air supply so that high-temperature flue gas mixes fully burning with the air being blown into burner hearth.Wherein, the air of boiler furnace is sent into ring
The mode of shape air inlet is preheated in advance by boiler, makes air themperature can reach 200～450 DEG C, can improve boiler further
The clean-burning degree of interior high temperature air.
The present invention is to make use of the at high temperature preferential oxidation of the sulfur in coal to decompose the principle discharged.This is because big portion
Dividing in coal, pyrite is the composition of main sulfur-bearing, and this sulfur is referred to as inorganic sulfur, and it is a kind of highly unstable material, pole
Easily decompose oxidation, oxidizing fire can be begun under the conditions of 350 DEG C～400 DEG C, discharge sulfur.It is organic for also having a kind of sulfur
Sulfur, this sulfur can discharge with the volatilization in coal, in large quantities pyrolysis in high temperature environments.Therefore, the effect of burner is
With the fewest air capacity and time, farthest making the sulfur in coal dust discharge, the combustion gas that burning generates carries
The residue carbon granule not burnt enters the gas solid reactor equipped with desulfurizing agent, the sulfur-bearing component in removing combustion gas, is then re-fed into pot
Stove burner hearth, adds sufficient air and carries out secondary and burn completely.
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.
Fuel of the present invention burns in the burner, enables it to, with less air capacity and extremely short time, make the sulfur in coal
Farthest discharge, in gas solid reactor, then carry out desulphurization reaction, therefore there is desulfuration efficiency high, desulfurizing agent profit
By the high feature of rate；In addition, burner is High Temperature Air Combustion, and the nitrogen component in coal dust also can discharge in a large number, turns
Chemical conversion nitrogen, thus control the generation of NOx so that it is there is the advantage that low NOx generates.Boiler furnace is the secondary of high-temperature flue gas
Combustion zone, and the purpose of dilatation increase burning can be played, effectively realize coal-fired fully burning, reduce nitrogen oxides etc. and pollute
The discharge of gas；Forced air inlet in comburant and burner hearth it is passed through, it is ensured that burning is carried out in oxygen enriched environment in burner,
Further ensure that the abundant burning of fuel.Rational in infrastructure, energy-conserving and environment-protective, significantly reduce nitrogen oxides, sulfide etc. and pollute
The discharge of gas, has preferable 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 (7)
1. the desulfurizing combustion of a coal-burning boiler, it is characterised in that: specifically include following steps:
: arranging a burner and a gas solid reactor before boiler, the exhanst gas outlet of burner enters with gas solid reactor
QI KOU connects, and the gas outlet of gas solid reactor connects with boiler furnace；
: first coal dust carries out combustion with meagre oxygen in burner, is passed through comburant during burning in burner, and burning generates
Combustion gas together enters equipped with carrying out desulphurization reaction in the gas solid reactor of desulfurizing agent with the residue carbon granule not burnt；
: after desulphurization reaction, high-temperature flue gas is passed directly into boiler furnace and carries out second-time burning, forces to the middle part of burner hearth during burning
Air-supply so that high-temperature flue gas mixes fully burning with the air being blown into burner hearth.
The desulfurizing combustion of a kind of coal-burning boiler the most according to claim 1, it is characterised in that: described gas solid reactor
Built with desulfurizing agent be the material based on calcium.
The desulfurizing combustion of a kind of coal-burning boiler the most according to claim 1, it is characterised in that: described comburant is
Granular material or the mixture of granular material or liquefied mixture.
The desulfurizing combustion of a kind of coal-burning boiler the most according to claim 3, it is characterised in that: described comburant
Composition is chlorate or permanganate or nitrate or a combination thereof thing.
5. according to the desulfurizing combustion of the arbitrary described a kind of coal-burning boiler of claim 1-4, it is characterised in that: enter gas-solid
Combustion gas and the temperature remaining carbon granule not burnt of reactor should control between 700 DEG C～1000 DEG C, enter gas solid reactor
Interior carried out desulfurization gas-solid reactive mode is fluid bed gas-solid reaction mode.
The desulfurizing combustion of a kind of coal-burning boiler the most according to claim 1, it is characterised in that: send into boiler furnace
Air is preheated in advance by boiler in the way of annular air inlet, makes air themperature can reach 200～450 DEG C.
The desulfurizing combustion of a kind of coal-burning boiler the most according to claim 1, it is characterised in that: on described boiler furnace
Being provided with temperature detection sensor, it sends temperature signal and helps to controller, the controller burning controlling to be passed through in burner
The amount of agent and the amount of air being passed through in boiler furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610492340.XA CN106196011A (en) | 2016-06-29 | 2016-06-29 | A kind of desulfurizing combustion of coal-burning boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610492340.XA CN106196011A (en) | 2016-06-29 | 2016-06-29 | A kind of desulfurizing combustion of coal-burning boiler |
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| Publication Number | Publication Date |
|---|---|
| CN106196011A true CN106196011A (en) | 2016-12-07 |
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ID=57462484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610492340.XA Pending CN106196011A (en) | 2016-06-29 | 2016-06-29 | A kind of desulfurizing combustion of coal-burning boiler |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073507A (en) * | 1991-12-19 | 1993-06-23 | 清华大学 | A kind of pulverized-coal fired boiler desulfurizing combustion that is used for |
| CN101334164A (en) * | 2008-07-28 | 2008-12-31 | 上海题桥纺织染纱有限公司 | Industrial boiler combustion method |
| JP2012181003A (en) * | 2011-03-03 | 2012-09-20 | Ihi Corp | Boiler device and high temperature air combustion system |
| CN104711073A (en) * | 2015-03-25 | 2015-06-17 | 张春山 | Coal combustion adjuvant and preparation method thereof |
-
2016
- 2016-06-29 CN CN201610492340.XA patent/CN106196011A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073507A (en) * | 1991-12-19 | 1993-06-23 | 清华大学 | A kind of pulverized-coal fired boiler desulfurizing combustion that is used for |
| CN101334164A (en) * | 2008-07-28 | 2008-12-31 | 上海题桥纺织染纱有限公司 | Industrial boiler combustion method |
| JP2012181003A (en) * | 2011-03-03 | 2012-09-20 | Ihi Corp | Boiler device and high temperature air combustion system |
| CN104711073A (en) * | 2015-03-25 | 2015-06-17 | 张春山 | Coal combustion adjuvant and preparation method thereof |
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Application publication date: 20161207 |