CN101215478B - Oxygen-increasing intermittent gasification method and technique for fixed bed coal gas producer - Google Patents
Oxygen-increasing intermittent gasification method and technique for fixed bed coal gas producer Download PDFInfo
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- CN101215478B CN101215478B CN 200810030421 CN200810030421A CN101215478B CN 101215478 B CN101215478 B CN 101215478B CN 200810030421 CN200810030421 CN 200810030421 CN 200810030421 A CN200810030421 A CN 200810030421A CN 101215478 B CN101215478 B CN 101215478B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
Abstract
The invention discloses a fixed bed coal-gas producer aerobic intermittent gasification method and the technology. The method comprises intermittently inputting gas to a coal-gas producer, wherein the gas is aerobic air which is mixed by air and oxygen and the oxygen-containing concentration of the aerobic air is 22-53%. The technology comprises firstly, inputting the aerobic air into a furnace, then, using steam to blow to the furnace inside in the order of blowing upwards, blowing downwards and secondly blowing upwards, and generating coal-gas. The invention can increase the air blowing efficiency, reduce discharging volume of waste gas, and saves energy sources effectively, when the oxygen-containing concentration of the aerobic air reaches to about 50%, furnace inside temperature reaches best reaction temperature due to the increase of the air blowing efficiency under the condition that the nitrogen volume reaches demands in a system, thereby the gas quality reaches balance, zero emission can be realized, thereby the invention can utilize the energy sources to the maximum, and the produced coal-gas has good gas quality.
Description
Technical field
The present invention relates to the gas maked coal field, relate in particular to fixed bed coal gas producer intermittent gasification method and equipment.
Background technology
The method of traditional fixed bed coal gas producer intermittent gasification is to improve temperature in the stove with airborne oxygen and carbon generation combustion reactions, the steam that makes feeding at high temperature with the carbon generation coal gas that reacts.Its processing step is: a, blow off (blasting air with gas blower in stove), reclaim residual coal gas in stove top gas line and the equipment; B, blowing (continuing to be blown into air in stove) improve temperature in the stove; C, recovery nitrogen are to industrial gas holder, to satisfy ammonia synthesis process H
2/ N
2Needs; D, in stove, go up steam blowing, generate water-gas; E, in stove following steam blowing, generating water-gas simultaneously, the position of stable gasification layer; F, go up steam blowing in stove, the coal gas of displacement stove bottom is for air admission stove bottom provides safety control.Because the few nitrogen content height of oxygen level in the air, traditional gasification process and process using air are as vaporized chemical, the efficient of drying on the one hand is low, thermosteresis is big, the energy consumption height, on the other hand when nitrogen content in the system touches the mark (synthetic ammonia need nitrogen content), temperature also reaches the optimal reaction temperature that gasification requires far away in the stove, therefore have only the requirement that reaches the temperature raising accumulation of heat by long blowing emptying time, cause the discharging of large quantity of exhaust gas (carbonic acid gas, sulfurous gas, carbon monoxide, methane etc.) thus.
Summary of the invention
The object of the present invention is to provide a kind of effectively save energy, reduce discharge amount of exhaust gas, and good fixed bed coal gas producer oxygen-increasing intermittent gasification method and the equipment of the coal gas makings of output.
This fixed bed coal gas producer oxygen-increasing intermittent gasification method provided by the invention, comprise and intermittently in producer gas generator, feed gas, described gas is the oxygenation air that is formed by air and oxygen mix, and the oxygen concentration of this oxygenation air is 22%-53%, and its concrete aerogenesis step is:
A, feed in this stove from the fixed bed coal gas producer bottom with described oxygenation air and to blow off, temperature raising simultaneously, reclaim coal gas;
B, feed in this stove from the fixed bed coal gas producer bottom simultaneously, produce coal gas with steam or steam and described oxygenation air;
C, feed producer gas generator with steam from fixed bed coal gas producer top in, produce water-gas;
D, feed producer gas generator with steam from the fixed bed coal gas producer bottom in, with the coal gas of steam displacement stove bottom;
E, repeating step a-d.
Equipment with the inventive method production coal gas comprises gas blower, also comprises being used for mixture of oxygen and Air mixing cavity and oxygen input tube and air input tube, and mixing chamber is communicated with gas blower, and oxygen input tube all is connected with mixing chamber with the air input tube.
The present invention adopts described oxygenation air as vaporized chemical, increased oxygen content, can improve blowing efficient, reduce discharge amount of exhaust gas, effective save energy, when the oxygen concentration of oxygenation air reaches 50% left and right sides because the raising of blowing efficient, nitrogen content meets the requirements of under the situation in system, temperature can rise to optimal reaction temperature in the stove, thereby makes makings reach balance, realizes zero release.Therefore the present invention can maximally utilise the energy, and the coal gas makings of output is good.
Description of drawings
Fig. 1 is a kind of structural representation with present device.
Fig. 2 is the another kind of structural representation of present device.
Embodiment
Fixed bed coal gas producer oxygen-increasing intermittent gasification method of the present invention comprise off and in fixed bed coal gas producer, feed be used to blow off, the oxygenation air of temperature raising, recovery nitrogen, the oxygen concentration of this oxygenation air is 22%-53%.In this contained the oxygen scope, we can adopt the oxygenation air of any one oxygen concentration value according to field condition.
Produce coal gas with the inventive method, can be with Fig. 1 or equipment shown in Figure 2.This equipment still comprises gas blower 1, air input tube 4, pressure lock 8, air pressure regulator 9, safety valve 10 also comprise oxygen input tube 3, oxygen valve 6, oxygen flowmete 7, are used for oxygen and air are carried out blended mixing chamber 2, oxygen analyzer table 11, oxygenation air main 5.Oxygen input tube 3 all is connected with mixing chamber 2 with air input tube 4, mixing chamber 2 is connected with gas blower 1, mixing chamber 2 can be connected in the air intake (see figure 1) of gas blower 1, also can be connected the outlet air end (see figure 2) of gas blower 1, and Fig. 1 or Fig. 2 are seen in the connection between other member.
With above-mentioned device fabrication coal gas, order comprises the steps:
A, open pressure lock 8 and oxygen valve 6 and gas blower 1, air and oxygen are mixed in mixing chamber 2, regulate pressure lock 8 and oxygen valve 6, observe oxygen flowmeter 7 and oxygen analyzer table 11, making the oxygen concentration of the oxygenation air of mixing chamber 2 inputs is 22%-53%.Open oxygenation air output tube 5, described oxygenation air fed in this stove from the fixed bed coal gas producer bottom blow off, temperature raising simultaneously, reclaim coal gas;
B, feed in the gas furnace from the gas furnace bottom simultaneously with steam or steam and described oxygenation air and (to go up steam blowing), produce coal gas, this moment, coal gas was shifted to fuel bed top to temperature, the heat of gasification layer, improved furnace surface temperature;
C, feed in the producer gas generator (following steam blowing) from producer gas generator top with steam, produce water-gas, this moment, steam entered from furnace roof portion, absorbed the heat of boiler face, reduced furnace surface temperature, coal gas to moving down, can reduce the thermosteresis that gas is taken out of to the heat of high temperature of gasification layer, stablize the position of gasification layer, helped the savings of furnace heat.
D, feed in the producer gas generator (steam blowing on the secondary) from the producer gas generator bottom with steam, with the coal gas of steam displacement producer gas generator bottom;
E, repeating step a-d.
If under the condition restriction situation, after the makings balance requires to reach, when not reaching the gasification optimum temps in the stove, after step a, increase a blowing stage again, in stove, feed described oxygenation air and the emptying of short period of time, to improve in the stove temperature to the optimum temps that gasifies.
In above-mentioned steps, feed among the step a that the oxygenation air is the same with traditional technology also three purposes: the one, blow off, reclaim the interior residual coal gas of stove top, pipeline and equipment.The 2nd, improve temperature in the stove, the blowing of traditional technology meaning.The 3rd, reclaim nitrogen, the air gas of producing is delivered to industrial gas holder.Because the oxygenation air that feeds in the technology of the present invention, oxygen level is higher, and blowing efficient is significantly improved, and therefore can obviously improve the thermo-efficiency in the technology temperature-rise period, reaches energy-conservation effect, effectively reduces discharge amount of exhaust gas simultaneously.
Claims (3)
1. the aerogenesis method of a fixed bed coal gas producer comprises intermittently bubbling air in producer gas generator, it is characterized in that described air becomes the oxygenation air with oxygen mix, and the oxygen concentration of this oxygenation air is 22%-53%, and its concrete aerogenesis step is:
A, feed in this stove from the fixed bed coal gas producer bottom with described oxygenation air and to blow off, temperature raising simultaneously, reclaim coal gas;
B, feed in the gas furnace from the gas furnace bottom simultaneously, produce water-gas with steam or steam and described oxygenation air;
C, feed producer gas generator with steam from producer gas generator top in, produce water-gas;
D, feed producer gas generator with steam from the producer gas generator bottom in, with the coal gas of steam displacement stove bottom;
E, repeating step a-d.
2. the aerogenesis method of fixed bed coal gas producer according to claim 1 is characterized in that feeding in the stove from the producer gas generator bottom with described oxygenation air behind step a, improves temperature in the stove, the little air coal gas emptying that is produced.
3. equipment according to the described method system coal gas of claim 1, comprise gas blower (1), it is characterized in that also comprising and be used for mixture of oxygen and Air mixing cavity (2) and oxygen input tube (3) and air input tube (4), mixing chamber (2) is communicated with gas blower (1), and oxygen input tube (3) all is connected with mixing chamber (2) with air input tube (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200810030421 CN101215478B (en) | 2008-01-04 | 2008-01-04 | Oxygen-increasing intermittent gasification method and technique for fixed bed coal gas producer |
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| CN 200810030421 CN101215478B (en) | 2008-01-04 | 2008-01-04 | Oxygen-increasing intermittent gasification method and technique for fixed bed coal gas producer |
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| CN101215478A CN101215478A (en) | 2008-07-09 |
| CN101215478B true CN101215478B (en) | 2010-12-15 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101481629A (en) * | 2008-12-09 | 2009-07-15 | 福建三钢（集团）三明化工有限责任公司 | Fixed bed oxygen-enriched continuous gasification process |
| CN101475839B (en) * | 2009-01-08 | 2012-10-31 | 北京名都厚德科技有限公司 | Coupling fixed bed oxygen-enriched continuous gasification process |
| CN101503635B (en) * | 2009-03-06 | 2012-11-21 | 武汉奥泰自动化工程有限责任公司 | Control device for oxygenation intermittent coal gas preparation |
| CN101497819B (en) * | 2009-03-06 | 2012-07-25 | 武汉奥泰自动化工程有限责任公司 | Oxygenation intermittent coal gas preparation |
| CN102181307A (en) * | 2011-04-07 | 2011-09-14 | 程培胜 | Method for preparing water gas from residual coke and carbon obtained after gas preparation through high-temperature cracking of garbage and biomass |
| CN103450944B (en) * | 2013-08-26 | 2015-01-21 | 河南心连心化肥有限公司 | Multifunctional fixed bed gasification furnace gas making device and gas making process |
| CN108102724A (en) * | 2017-12-27 | 2018-06-01 | 贵州开磷息烽合成氨有限责任公司 | A kind of method of gas burner oxygenation gas |
| CN108264939A (en) * | 2018-01-13 | 2018-07-10 | 安徽金禾实业股份有限公司 | A kind of pressure control control oxygen system for fixed bed oxygen enhanced gasification technique |
| CN112745967A (en) * | 2020-12-11 | 2021-05-04 | 安徽金禾实业股份有限公司 | Automatic temperature raising and inert making method of UGI furnace |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2401552Y (en) * | 1999-10-28 | 2000-10-18 | 王守信 | Intermittently producted gas generating furnace |
| CN1380378A (en) * | 2002-05-29 | 2002-11-20 | 李德平 | Production process for making water-gas by using bitumite |
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- 2008-01-04 CN CN 200810030421 patent/CN101215478B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2401552Y (en) * | 1999-10-28 | 2000-10-18 | 王守信 | Intermittently producted gas generating furnace |
| CN1380378A (en) * | 2002-05-29 | 2002-11-20 | 李德平 | Production process for making water-gas by using bitumite |
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Owner name: BEIJING YIFENG LONGYUAN ENERGY SAVING TECHNOLOGY C Free format text: FORMER OWNER: GUO HAIFENG Effective date: 20120419 |
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