CN102311807A - Method and apparatus for preparing high temperature composite gasifying agent - Google Patents
Method and apparatus for preparing high temperature composite gasifying agent Download PDFInfo
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- CN102311807A CN102311807A CN201110241267A CN201110241267A CN102311807A CN 102311807 A CN102311807 A CN 102311807A CN 201110241267 A CN201110241267 A CN 201110241267A CN 201110241267 A CN201110241267 A CN 201110241267A CN 102311807 A CN102311807 A CN 102311807A
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Abstract
The invention discloses a method and an apparatus for preparing a high temperature composite gasifying agent. The composite gasifying agent comprises the following gases, by volume, 8-12% of CO2, 15-18% of H2O, 7-10% of O2, and the balance N2. The method comprises the following steps: gaseous fuels are combusted by a combustor, the excess air factor is controlled at 1.05-1.2, a high temperature smoke is generated, and the temperature of the smoke which contains, by volume, 8-12% of CO2 and 15-18% of H2O is controlled at 1100-1300DEG C, and a certain amount of O2 is supplied to the high temperature smoke, so the volume percentage of O2 in the high temperature smoke reaches 7-10%. The method for preparing the high temperature composite gasifying agent has the advantages of simple usage equipment, high energy utilization efficiency, and good economy.
Description
Technical field
The present invention relates to the preparation method of a kind of high temperature combined gasification agent, the invention still further relates to the preparing method's who realizes this high temperature combined gasification agent device.
Background technology
The nonflame gasification technology is a kind of efficient, the clean gasification technology that proposed in recent years.It is the principle that adopts the nonflame gasification; Almost there is not obvious limit between the dry thermal cracking of gasified raw material, redox and the gas reforming reaction; Be swift in response and disperse in the entire reaction space; Uniformity of temperature profile and maintain a high level in the entire reaction space helps the reforming reaction of gas and the cracking of tar like this, thereby can produce calorific value height, clean artificial fuel gas.
Realize that the pacing items that the nonflame gasification must be satisfied is: gasification agent temperature must be enough high, usually greater than 1000 ℃.Realize that a kind of method of vaporized chemical pyritous is to adopt hotblast stove form of heating regime mode, adopt paired thermophore,, realize the indirect heating of high-temperature flue gas vaporized chemical through the switching of high-temperature flue gas and vaporized chemical.This method can adopt the strong ceramic honey comb of exchange capability of heat to make heat storage, can vaporized chemical be heated to the high temperature than low about 150 ℃ of the temperature of high-temperature flue gas in theory.Although adopt this method can obtain high temperature gasification agent, resulting high temperature gasification agent instability of flow, systematic comparison is complicated, and initial cost is big, and because the heat storage drag losses is bigger, has increased system energy consumption accordingly.Adopt the nichrome wire heating means, because the coefficient of heat transfer is low, vaporized chemical is heated to more than 1000 ℃, need very big heating surface and heating power, heating installation is huge, and power consumption is very high, is inconsiderable.
At present the vaporized chemical overwhelming majority that adopted of nonflame gasification technology is air and pure oxygen, perhaps adopts in air, pure oxygen, to add water vapour and make vaporized chemical.Make vaporized chemical with air, cheap and easy to get, but about 79% nitrogen is not participate in gasification reaction in the air, thus make that a nitrogen content in the artificial fuel gas is high, reduce and limited the calorific value of synthetic gas.Adopt oxygen to make vaporized chemical, though can significantly improve the calorific value of artificial fuel gas, the oxygen consumption is big, has increased the vaporized chemical cost, has reduced the economy of gasification system.
Summary of the invention
It is stable and have a preparation method of the high temperature combined gasification agent of controllability that first technical problem to be solved by this invention provides low, the convenient for production and gasification agent temperature of a kind of production cost and component.
It is stable and have a preparation facilities of the high temperature combined gasification agent of controllability that second technical problem to be solved by this invention provides low, the convenient for production and gasification agent temperature of a kind of production cost and component.
In order to solve above-mentioned first technical problem, the preparation method of high temperature combined gasification provided by the invention agent, the combined gasification agent contains CO
2, H
2O, O
2And N
2Gas, CO
2Percent by volume be 8～12%, H
2The percent by volume of O is 15～18%, O
2Percent by volume be 7～10%, at first geseous fuel is through burner combustion, excess air coefficient is controlled at 1.05-1.2, produces high-temperature flue gas, flue-gas temperature is controlled at 1100～1300 ℃, the CO that contains in the high-temperature flue gas
2Percent by volume be 8～12%, H
2The percent by volume of O is 15～18%, in high-temperature flue gas, replenishes a certain amount of oxygen, makes the percent by volume of the oxygen in the high-temperature flue gas reach 7～10%.
In order to solve above-mentioned second technical problem; The preparing method's of realization high temperature combined gasification provided by the invention agent device, burner is connected with gas line and blast main, and the outlet of burner is to being connected to smoke discharging pipe; Smoke discharging pipe is connected with the oxygenating pipeline; Smoke discharging pipe is provided with temperature transmitter and oxygen concentration transmitter, and temperature transmitter is electrically connected with temperature regulator, and temperature regulator is electrically connected with fuel valve on being connected on gas line; The oxygen concentration transmitter is electrically connected with oxygen concentration controller, and oxygen concentration controller is electrically connected with oxygen pipeline valve on being connected on the oxygenating pipeline.
Adopt the preparation method and the device thereof of the high temperature combined gasification agent of technique scheme, the high temperature gasification agent temperature of generation can reach 1300 ℃, and temperature and adjustable components satisfy the pacing items of nonflame gasification technology fully.Mainly contain CO in the component of vaporized chemical
2, H
2O, O
2And N
2Deng gas.CO
2Percent by volume be 8～12%, H
2The percent by volume of O is 15～18%, O
2Percent by volume be 7～10%.Because CO
2Can participate in the reduction reaction of carbon, H
2O can participate in water-gas reaction and water gas shift reaction, therefore, and CO
2And H
2O can be used as the vaporized chemical of nonflame gasification reaction fully.Because a series of reduction reactions that gasification reaction carries out need absorb a large amount of heat, therefore, also need certain oxygen in the high temperature gasification agent and participate in oxidizing reaction, offer the heat absorption of gasification reduction reaction through the oxidizing reaction release of heat.Therefore, utilize the agent of this high temperature combined gasification to gasify, gasification reaction just can carry out continuously.
Stable for the temperature that guarantees this high temperature gasification agent and oxygen percent by volume, the present invention also comprises the system of oxygen percent by volume in gasification agent temperature, the vaporized chemical.This system comprises oxygen percent by volume single loop control system in gasification agent temperature single loop control system and the vaporized chemical.Burner air distribution compressor flow remains unchanged, and when gasification agent temperature raises, turns down fuel valve, when gasification agent temperature reduces, opens big fuel valve, and the scope that fuel valve is regulated is controlled at coefficient of excess air and is in 1.05～1.2 category; When oxygen percent by volume in the vaporized chemical increases, turn down the oxygen pipeline valve, when the oxygen percent by volume reduces in the vaporized chemical, open big oxygen pipeline valve.So just can obtain the stable high temperature combined gasification agent of temperature and oxygen percent by volume.
What the present invention produced is a kind of hybrid gasification agent, contains CO
2, H
2O, O
2And N
2Deng gas, CO
2Percent by volume be 8～12%, H
2The percent by volume of O is 15～18%, O
2Percent by volume be 7～10%, temperature can reach 1100～1300 ℃.
The present invention also comprises the system of gasification agent temperature, oxygen percent by volume, can guarantee the stable of gasification agent temperature and oxygen percent by volume like this.
The vaporized chemical that the present invention produces can be different according to used biological material kind in the gasification, and the temperature of choose reasonable high temperature gasification agent and oxygen percent by volume, the synthetic gas quality that gasification reaction is produced reach optimum.
Advantage of the present invention is:
1, to produce the method for high temperature gasification agent simple, feasible in the present invention, and thermo-efficiency is high.
2, the high temperature gasification agent of the present invention's generation is a kind of hybrid gasification agent; The too high deficiency of a nitrogen content when having overcome air as vaporized chemical; The high deficiency of cost when also having overcome purity oxygen as vaporized chemical is for calorific value and the economy that improves the gasification artificial fuel gas provides approach.
3, the temperature and the oxygen level of the vaporized chemical of the present invention's generation are adjustable; Guaranteed the stable of gasification agent temperature and oxygen level; And can be according to the kind of different biomass, the temperature of choose reasonable vaporized chemical and oxygen level, the artificial fuel gas quality that produces of guaranteeing to gasify reaches optimum.
In sum; The invention solves the existing deficiencies such as the method more complicated of high temperature gasification agent, the instability of flow that produces high temperature gasification agent and thermo-efficiency are lower that produce; And adopt single vaporized chemical to be unfavorable for the raising and the relatively poor deficiency that waits of gasification system economy of artificial fuel gas calorific value; What have better economy can produce the agent of high temperature combined gasification easily, and gasification agent temperature and component are stable and have a method of controllability.
Description of drawings
Fig. 1 is the structural representation of the equipment of production high temperature combined gasification of the present invention agent.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
The preparation method of a kind of high temperature combined gasification agent, the combined gasification agent contains CO
2, H
2O, O
2And N
2Gas, CO
2Percent by volume be 8～12%, H
2The percent by volume of O is 15～18%, O
2Percent by volume be 7～10%, at first geseous fuel is through burner combustion, excess air coefficient is controlled at 1.05-1.2, produces high-temperature flue gas, flue-gas temperature is controlled at 1100～1300 ℃, the CO that contains in the high-temperature flue gas
2Percent by volume be 8～12%, H
2The percent by volume of O is 15～18%, in high-temperature flue gas, replenishes a certain amount of oxygen, makes the percent by volume of the oxygen in the high-temperature flue gas reach 7～10%.
As shown in Figure 1; Burner 2 is connected with gas line 9 and blast main 8, and the outlet of burner 2 is to being connected to smoke discharging pipe 4, and the outlet of smoke discharging pipe 4 is docked with vapourizing furnace 10; 4 pairs of smoke discharging pipes are connected to oxygenating pipeline 7; Smoke discharging pipe 4 is provided with temperature transmitter 3 and oxygen concentration transmitter 5, and temperature transmitter 3 is electrically connected with temperature regulator 1, and temperature regulator 1 is electrically connected with fuel valve 11 on being connected on gas line 9; Oxygen concentration transmitter 5 is electrically connected with oxygen concentration controller 6, and oxygen concentration controller 6 is electrically connected with oxygen pipeline valve 12 on being connected on oxygenating pipeline 7.
The method that this programme produces high temperature gasification agent is: at first; Geseous fuel gets into burners 2 and enters into air burner 2 in burner 2 internal combustion from blast main 8 through gas line 9 and fuel valve 11, and the high-temperature flue gas that the burning back produces is furnished with oxygenating pipeline 7 through smoke discharging pipe 4 discharges on smoke discharging pipe 4; In high-temperature flue gas, replenish a certain amount of oxygen; Like this, this high-temperature gas mixture body just can be used as the used vaporized chemical of gasification, sends into vapourizing furnace 10 and gasifies.Stable for the temperature that guarantees this high temperature gasification agent and oxygen percent by volume, the present invention also comprises the system of oxygen percent by volume in gasification agent temperature, the vaporized chemical.This system comprises oxygen percent by volume single loop control system in gasification agent temperature single loop control system and the vaporized chemical.When the gasification agent temperature in temperature transmitter 3 detects smoke discharging pipe 4 raise, temperature regulator 1 turned down fuel valve 11, and when temperature reduced in the temperature transmitter 3 detection smoke discharging pipes 4, temperature regulator 1 left greatly fuel valve 11; When the oxygen percent by volume increases in oxygen concentration transmitter 5 detects smoke discharging pipe 4; Oxygen concentration controller 6 turns down oxygen pipeline valve 12; When the oxygen percent by volume reduces in oxygen concentration transmitter 5 detects smoke discharging pipe 4; Oxygen concentration controller 6 is opened greatly oxygen pipeline valve 12, so just can obtain temperature and the stable vaporized chemical of oxygen percent by volume.
Claims (2)
1. the preparation method of high temperature combined gasification agent, the combined gasification agent contains CO
2, H
2O, O
2And N
2Gas, CO
2Percent by volume be 8～12%, H
2The percent by volume of O is 15～18%, O
2Percent by volume be 7～10%, it is characterized in that: at first geseous fuel is through burner combustion, and excess air coefficient is controlled at 1.05-1.2, produces high-temperature flue gas, flue-gas temperature is controlled at 1100～1300 ℃, the CO that contains in the high-temperature flue gas
2Percent by volume be 8～12%, H
2The percent by volume of O is 15～18%, in high-temperature flue gas, replenishes a certain amount of oxygen, makes the percent by volume of the oxygen in the high-temperature flue gas reach 7～10%.
2. realize the preparing method's of the described high temperature combined gasification of claim 1 agent device; It is characterized in that: burner (2) is connected with gas line (9) and blast main (8); The outlet of described burner (2) is to being connected to smoke discharging pipe (4); Described smoke discharging pipe (4) is connected with oxygenating pipeline (7); Described smoke discharging pipe (4) is provided with temperature transmitter (3) and oxygen concentration transmitter (5), and described temperature transmitter (3) is electrically connected with temperature regulator (1), and described temperature regulator (1) is electrically connected with fuel valve (11) on being connected on described gas line (9); Described oxygen concentration transmitter (5) is electrically connected with oxygen concentration controller (6), and described oxygen concentration controller (6) is electrically connected with oxygen pipeline valve (12) on being connected on described oxygenating pipeline (7).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110241267A CN102311807A (en) | 2011-08-22 | 2011-08-22 | Method and apparatus for preparing high temperature composite gasifying agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110241267A CN102311807A (en) | 2011-08-22 | 2011-08-22 | Method and apparatus for preparing high temperature composite gasifying agent |
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| Publication Number | Publication Date |
|---|---|
| CN102311807A true CN102311807A (en) | 2012-01-11 |
Family
ID=45425381
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|---|---|---|---|
| CN201110241267A Pending CN102311807A (en) | 2011-08-22 | 2011-08-22 | Method and apparatus for preparing high temperature composite gasifying agent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109705922A (en) * | 2019-02-26 | 2019-05-03 | 哈尔滨锅炉厂有限责任公司 | The method of biomass air-flue gas gasification coupling coal-burning boiler electricity generation system and raising biological fuel gas quality |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1330700A (en) * | 1998-11-05 | 2002-01-09 | 株式会社荏原制作所 | Power generation system based on gasification of combustible material |
| CN101865451A (en) * | 2010-05-24 | 2010-10-20 | 叶力平 | Biomass high-temperature flue gas gasification combination coal burning boiler and low-pollution combustion method thereof |
| CN101932677A (en) * | 2008-01-14 | 2010-12-29 | 波思能源有限公司 | A biomass gasification method and apparatus for production of syngas with a rich hydrogen content |
-
2011
- 2011-08-22 CN CN201110241267A patent/CN102311807A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1330700A (en) * | 1998-11-05 | 2002-01-09 | 株式会社荏原制作所 | Power generation system based on gasification of combustible material |
| CN101932677A (en) * | 2008-01-14 | 2010-12-29 | 波思能源有限公司 | A biomass gasification method and apparatus for production of syngas with a rich hydrogen content |
| CN101865451A (en) * | 2010-05-24 | 2010-10-20 | 叶力平 | Biomass high-temperature flue gas gasification combination coal burning boiler and low-pollution combustion method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109705922A (en) * | 2019-02-26 | 2019-05-03 | 哈尔滨锅炉厂有限责任公司 | The method of biomass air-flue gas gasification coupling coal-burning boiler electricity generation system and raising biological fuel gas quality |
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Application publication date: 20120111 |