CN101987975A - Gas producer and gas preparation method - Google Patents
Gas producer and gas preparation method Download PDFInfo
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- CN101987975A CN101987975A CN2010101095104A CN201010109510A CN101987975A CN 101987975 A CN101987975 A CN 101987975A CN 2010101095104 A CN2010101095104 A CN 2010101095104A CN 201010109510 A CN201010109510 A CN 201010109510A CN 101987975 A CN101987975 A CN 101987975A
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- fines
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Abstract
The invention relates to a gas producer and a gas preparation method. The gas producer comprises a hearth, a reducing zone and a gas guide zone which are sequentially arranged in a producer wall from top to bottom, wherein a pulverized coal inlet is formed on the wall face of the hearth; a second gas inlet is formed on the wall face of the reducing zone, and a fine pulverized coal inlet is also formed on the wall face of the reducing zone or a wall face at the intersection of the reducing zone and the hearth. The method comprises the following steps of: introducing pulverized coal particles and a gasification agent into the gas producer for burning; and introducing fine pulverized coal particles into the gas producer to ensure that the materials in the gas producer are reacted to form carbon monoxide and hydrogen gas. In the invention, the technical means of forming the fine pulverized coal inlet on the gas producer for leading the fine pulverized coal particles in a carbon monoxide preparing reaction through reduction is adopted, so that the concentration of materials in the reducing zone is improved; the reduction reaction efficiency in the reducing zone can be promoted; and then the preparation efficiency of gas can be improved.
Description
Technical field
The present invention relates to a kind of producer gas generator and coal gas preparation, relate in particular to a kind of fluidized bed coal gas producer and adopt this equipment to prepare the method for coal gas.
Background technology
Than burning of coal, the burning of coal gas more cleans, efficiently, so coal gas is just receiving more and more widely concern as a kind of clean energy.The producer gas generator that coal is converted to coal gas mainly can be divided into three major types: fixed bed, fluidized-bed and air flow bed.In the production process of reality, the gasification of fine coal is higher than the lump coal gasification efficiency, is the main gasification means of research at present and application.
The gasification principle that utilizes fine coal to produce coal gas is the reaction of coal and vaporized chemical, is the reaction of carbon, oxygen and water vapor in essence.In common producer gas generator, fine coal is fed in the producer gas generator, and water vapor, air are fed in the producer gas generator, then fine coal and vaporized chemical react, main reaction formula comprises the combustion reactions of carbon and oxygen, emits heat energy, shown in (1):
C+O
2→CO
2+Q (1)
Wherein, heat is emitted in "+Q " representative.
Comprise that also carbonic acid gas and water vapor are the reaction of carbon monoxide and hydrogen by carbon reduction, the principal reaction formula is as shown in the formula shown in (2), (3) and (4):
CO
2+C→2CO-Q (2)
H
2O+C→H
2+CO-Q (3)
2H
2O+C→CO
2+2H
2-Q (4)
Wherein, " Q " representative absorbs heat.
Prior art can be circulating fluidized bed based on the employed producer gas generator of above-mentioned principle producing coal in next life gas, its general structure as shown in Figure 1, from bottom to up zone is followed successively by burner hearth 10, reduction zone 20 and air guide district 30 in body of heater 100 walls.Wherein, be provided with fine coal inlet 110 in the middle and lower part of body of heater 100 sidewalls, can claim coal inlet again; Be provided with first inlet mouth 120 in body of heater 100 bottoms, the air inlet first time that is fed mainly is air and water vapor, can claim the vaporized chemical inlet mouth again.In body of heater 100 walls on the lower side the zone that directly is communicated with fine coal inlet 110 and first inlet mouth 120, the space of portion be exactly burner hearth 10, provide pulverized coal friring required space, what mainly finish is above-mentioned reaction formula (1).Be provided with second inlet mouth 130 at the middle part of body of heater 100 sidewalls, the air inlet second time of feeding is water vapor or vaporized chemical, claims the secondary air import again.Above burner hearth 10, the zone that directly is communicated with second inlet mouth 130 is reduction zone 20, provides carbonic acid gas, water vapor and carbon to finish the reaction compartment of above-mentioned reduction reaction formula (2)～(4).Be air guide district 30 above reduction zone 20, the top of body of heater 100 will be mingled with the gas mixture of solid particulate generally by pipe connection cyclonic separator 200, be commonly called as coal gas, be transferred in the cyclonic separator 200.The top of cyclonic separator 200 is provided with the derivation pipeline, the gas mixture separated is derived, and its lower end is drawn and mouthful is linked to each other with body of heater 100 by being arranged on returning of body of heater 100 middle parts, is used to guide unreacted solid particulate, mainly be fine coal, be circulated back to burning once more in the body of heater 100.
Prior art adopts the producer gas generator of said structure, and the defective of its existence is: pressure is lower in the reduction zone, so the molecule of carbonic acid gas, water vapor and carbon is difficult to fully contact to react, causes the reaction efficiency of producer gas generator generally not high.
Summary of the invention
The purpose of this invention is to provide a kind of producer gas generator and coal gas preparation,, improve gas production efficient to promote effectively carrying out of producer gas generator internal reaction.
For achieving the above object, the embodiment of the invention provides a kind of producer gas generator, in furnace body wall, comprise burner hearth, reduction zone and air guide district from bottom to up successively, described burner hearth wall is provided with the fine coal inlet, described reduction zone wall is provided with second inlet mouth, it is characterized in that: also be provided with the fines inlet on the wall of on the wall of described reduction zone or described reduction zone and described burner hearth boundary.
Aforesaid producer gas generator, the quantity of preferably described fines inlet is a plurality of, circumferentially evenly is laid on the body of heater wall.
Aforesaid producer gas generator, preferably described fines inlet is specially spray gun structure.
Aforesaid producer gas generator, the particle diameter of the pulverized coal particle that preferably described fine coal inlet feeds is less than or equal to 10 millimeters, and the fines particle grain size that described fines inlet feeds is less than or equal to 0.3 millimeter.
For achieving the above object, the embodiment of the invention also provides a kind of coal gas preparation, comprising:
Feeding pulverized coal particle and vaporized chemical burn in producer gas generator;
Feed the fines particle in producer gas generator, the substance reaction in the described producer gas generator is to obtain carbon monoxide and hydrogen.
Aforesaid coal gas preparation, preferably the particle diameter of the described pulverized coal particle of Tong Ruing is less than or equal to 10 millimeters, and the described fines particle grain size of feeding is less than or equal to 0.3 millimeter.
Aforesaid coal gas preparation preferably also comprises: feed water vapour or vaporized chemical in the direction producer gas generator on fines particle feeding position.
Aforesaid coal gas preparation preferably feeds fines particulate step and is specially: sprays into the fines particle at interval with pulse mode in producer gas generator in producer gas generator.
Aforesaid coal gas preparation preferably feeds fines particulate step and is specially: spray into the fines particle continuously in producer gas generator in producer gas generator.
By above technical scheme as can be known, the present invention adopts and set up the fines inlet on producer gas generator, so that in the reaction of reduction preparation carbon monoxide, feed fines particulate technique means, improved the concentration of carbon in the reduction zone, improve the reduction reaction efficient in the reduction zone, and then can improve gas preparation efficient.
Also in conjunction with the accompanying drawings the present invention is described in further detail below by specific embodiment.
Description of drawings
Fig. 1 is the structural representation of a kind of producer gas generator in the prior art;
Fig. 2 is the structural representation of producer gas generator specific embodiment of the present invention;
Fig. 3 is the schema of coal gas preparation specific embodiment of the present invention.
Among the figure:
30-air guide district, 10-burner hearth 20-reduction zone
40-interstitital texture 100-body of heater 110-fine coal inlet
The 120-first inlet mouth 130-second inlet mouth 140-air guide port
150-fines inlet 200-cyclonic separator
Embodiment
Producer gas generator embodiment
Be illustrated in figure 2 as the structural representation of producer gas generator specific embodiment of the present invention.Comprise burner hearth 10, reduction zone 20 and air guide district 30 from bottom to up successively in body of heater 100 walls of this producer gas generator.Burner hearth 10 wherein links to each other with first inlet mouth 120 that is arranged on body of heater 100 bottoms, be used for bubbling air, also links to each other with the fine coal inlet 110 that is arranged on body of heater 100 middle and lower parts.Can in burner hearth 10, carry out combustion reactions after feeding pulverized coal particle and vaporized chemical.Reduction zone 20 is positioned at the top of burner hearth 10, and reduction zone 20 links to each other with second inlet mouth 130 that is arranged on body of heater 100 sidewalls middle parts, be used to feed water vapor or vaporized chemical.The carbonic acid gas that burning back generates, under driving, warm air and bottom air-flow swim in the coal dust of reduction zone 20 and the water vapor or the vaporized chemical that feed from second inlet mouth 130 can carry out major ingredient carbon monoxide and the hydrogen that reduction reaction generates coal gas in reduction zone 20, the gas mixture that then comprises carbon monoxide and hydrogen enters air guide district 30, be provided with air guide port 140 on the sidewall in body of heater 100 air guide districts 30, coal gas can be derived from air guide port 140.Burner hearth 10 in body of heater 100, reduction zone 20 and air guide district 30 are not proper division, just divide with the main reaction that takes place in it.Also be provided with fines inlet 150 on the wall that reduction zone 20 and burner hearth 10 have a common boundary in this producer gas generator body of heater 100, promptly between fine coal inlet 120 and first inlet mouth 110, fines inlet 150 be set, be used to feed the fines particle.So-called fines particle, promptly particle diameter is much smaller than the fine coal of pulverized coal particle particle diameter, and the particle diameter of pulverized coal particle is less than or equal to 10 millimeters usually, and the fines particle grain size is less than or equal to 0.3 millimeter.
The working process of present embodiment producer gas generator is: feed vaporized chemical and pulverized coal particle respectively by first inlet mouth and fine coal inlet in producer gas generator, burn under pulverized coal particle and the vaporized chemical hot environment in stove; In producer gas generator, feed the fines particle by the fines inlet, and this moment, in producer gas generator, feed water vapor or vaporized chemical by second inlet mouth.Under this environment, carbonic acid gas and water vapor generate carbon monoxide and hydrogen with unburned high temperature pulverized coal particle and fines particle generation reduction reaction.In this process, fines particle role is to have increased the concentration of carbon in the reduction zone, and the distance between each molecule of reactant is reduced, and the carrying out of accelerated reaction makes and react carry out more abundant, therefore can improve the reaction efficiency of coal gas formation reaction.
In concrete enforcement, the quantity of fines inlet can circumferentially be laid on the body of heater wall uniformly for a plurality of, so that supply with the fines particle equably in the reduction zone.
Further, the fines inlet can adopt spray gun structure.The fines particle is little because of its particle diameter, and itself just has sprayable condition.Adopt the mode of spraying adding can be more conducive to the mixing of fines particle in the reduction zone, and can further spray into more fines particles, to improve the reduction zone internal pressure with elevated pressures.
In the present embodiment technical scheme, feeding fines particulate purpose is to improve material concentration in the reduction zone, put so the position of fines inlet is not limited to establish on the wall between reduction zone and burner hearth, can also be arranged on the wall of reduction zone or on the wall of burner hearth.
Coal gas preparation embodiment
Be illustrated in figure 3 as the schema of coal gas preparation specific embodiment of the present invention, this method comprises the steps:
Further performing step 3, in the reduction zone of producer gas generator, feed water vapor or vaporized chemical, further improve the temperature of reduction zone 20, put forward high-carbon concentration simultaneously, what promote reduction reaction generates carbon monoxide and hydrogen, then derives.
The coal gas preparation of present embodiment can adopt producer gas generator of the present invention to finish.The particle diameter of the pulverized coal particle that feeds is generally less than or equals 10 millimeters, and the fines particle grain size of feeding is generally less than or equals 0.3 millimeter.
On the mode of fines particle and water vapour or vaporized chemical feeding, can feed in the lump also and can feed respectively, for example in producer gas generator, feed the fines particle, on fines particle feeding position, feed water vapour or vaporized chemical in the direction producer gas generator.On the feeding order, for the producer gas generator of continuously feeding, burning, reduction, derivation carbon monoxide, the feeding of fines particle and water vapour does not have the branch of the priority of stricti jurise in proper order.
In concrete the enforcement, preferably adopt spray gun in producer gas generator, to spray into the fines particle at interval, perhaps also can adopt spray gun in producer gas generator, to spray into the fines particle continuously with pulse mode.
The technical scheme of present embodiment, by in the reduction zone, feeding the fines particle, can increase the concentration of material in the reduction zone, distance between each molecule of reactant is reduced, quickened the carrying out of reaction, make and react carry out more abundant, therefore can improve the speed of reaction of gas mixture formation reaction.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (9)
1. producer gas generator, in furnace body wall, comprise burner hearth, reduction zone and air guide district from bottom to up successively, described burner hearth wall is provided with the fine coal inlet, described reduction zone wall is provided with second inlet mouth, it is characterized in that: also be provided with the fines inlet on the wall of on the wall of described reduction zone or described reduction zone and described burner hearth boundary.
2. producer gas generator according to claim 1 is characterized in that: the quantity of described fines inlet is a plurality of, circumferentially evenly is laid on the body of heater wall.
3. producer gas generator according to claim 1 and 2 is characterized in that: described fines inlet is specially spray gun structure.
4. producer gas generator according to claim 1 and 2 is characterized in that: the particle diameter of the pulverized coal particle that described fine coal inlet feeds is less than or equal to 10 millimeters, and the fines particle grain size that described fines inlet feeds is less than or equal to 0.3 millimeter.
5. coal gas preparation is characterized in that comprising:
Feeding pulverized coal particle and vaporized chemical burn in producer gas generator;
Feed the fines particle in producer gas generator, the substance reaction in the described producer gas generator is to obtain carbon monoxide and hydrogen.
6. coal gas preparation according to claim 5 is characterized in that: the particle diameter of the described pulverized coal particle of feeding is less than or equal to 10 millimeters, and the described fines particle grain size of feeding is less than or equal to 0.3 millimeter.
7. according to claim 5 or 6 described coal gas preparations, it is characterized in that, also comprise: on fines particle feeding position, feed water vapour or vaporized chemical in the direction producer gas generator.
8. according to claim 5 or 6 described coal gas preparations, it is characterized in that, in producer gas generator, feed fines particulate step and be specially: in producer gas generator, spray into the fines particle at interval with pulse mode.
9. according to claim 5 or 6 described coal gas preparations, it is characterized in that, in producer gas generator, feed fines particulate step and be specially: in producer gas generator, spray into the fines particle continuously.
Priority Applications (1)
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|---|---|---|---|
| CN201010109510.4A CN101987975B (en) | 2010-02-10 | 2010-02-10 | Gas producer and gas preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010109510.4A CN101987975B (en) | 2010-02-10 | 2010-02-10 | Gas producer and gas preparation method |
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|---|---|
| CN101987975A true CN101987975A (en) | 2011-03-23 |
| CN101987975B CN101987975B (en) | 2014-08-20 |
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|---|---|---|---|
| CN201010109510.4A Active CN101987975B (en) | 2010-02-10 | 2010-02-10 | Gas producer and gas preparation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108951367A (en) * | 2018-09-04 | 2018-12-07 | 中交公局海威工程建设有限公司 | A kind of method that asphalt mixing plant coal changes gas heating |
| CN113072979A (en) * | 2021-03-30 | 2021-07-06 | 新奥科技发展有限公司 | Coal gasification furnace and method for coal gasification |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101063053A (en) * | 2007-05-14 | 2007-10-31 | 佛山市科达能源机械有限公司 | Circulating fluidized bed gas generator system |
| CN201704293U (en) * | 2010-02-10 | 2011-01-12 | 马鞍山科达洁能有限公司 | Gas producer |
-
2010
- 2010-02-10 CN CN201010109510.4A patent/CN101987975B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101063053A (en) * | 2007-05-14 | 2007-10-31 | 佛山市科达能源机械有限公司 | Circulating fluidized bed gas generator system |
| CN201704293U (en) * | 2010-02-10 | 2011-01-12 | 马鞍山科达洁能有限公司 | Gas producer |
Non-Patent Citations (1)
| Title |
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| 关崇实: "煤气化技术的展望", 《辽宁化工》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108951367A (en) * | 2018-09-04 | 2018-12-07 | 中交公局海威工程建设有限公司 | A kind of method that asphalt mixing plant coal changes gas heating |
| CN113072979A (en) * | 2021-03-30 | 2021-07-06 | 新奥科技发展有限公司 | Coal gasification furnace and method for coal gasification |
| CN113072979B (en) * | 2021-03-30 | 2022-06-24 | 新奥科技发展有限公司 | Coal gasification furnace and method for coal gasification |
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|---|---|
| CN101987975B (en) | 2014-08-20 |
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Address after: 243041 Anhui city in Ma'anshan province north of the revitalization of economic and Technological Development Zone, Road No. 555 Applicant after: KEDA INDUSTRIAL CO., LTD. Address before: 243041 Anhui city in Ma'anshan province north of the revitalization of economic and Technological Development Zone, Road No. 555 Applicant before: Ma'anshan Keda Clean Energy Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: MA'ANSHAN KEDA CLEAN ENERGY CO., LTD. TO: KEDA CLEAN ENERGY (MA'ANSHAN) CO., LTD. |
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Denomination of invention: Gas producer and gas preparation method Effective date of registration: 20190729 Granted publication date: 20140820 Pledgee: China Co truction Bank Corp Ma'anshan branch Pledgor: KEDA INDUSTRIAL CO., LTD. Registration number: 2019340000426 |