CN102367391A - Biomass air-water vapor gasification method - Google Patents
Biomass air-water vapor gasification method Download PDFInfo
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- CN102367391A CN102367391A CN2011101736733A CN201110173673A CN102367391A CN 102367391 A CN102367391 A CN 102367391A CN 2011101736733 A CN2011101736733 A CN 2011101736733A CN 201110173673 A CN201110173673 A CN 201110173673A CN 102367391 A CN102367391 A CN 102367391A
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Abstract
The invention discloses a biomass air-water vapor gasification method, which comprises the following steps: introducing air in a combustion chamber of a biomass gasifier, combusting biomass fuels to generate a reactant under the condition of normal pressure or micro-positive pressure, introducing water vapor with 0.2-0.8 MPa and 120-160 DEG C of temperature to carry out gasification reaction with the reactant when the temperature in the gasifier reaches 750-1000 DEG C, and generating biomass combustion gas after 1-2 seconds reaction time. Because a step for introducing water vapor in gasification reaction is added, the reactant generated by pyrolyzing biomass fuels is reacted with water vapor further to prepare medium heating value biomass combustion gas, the heating value can be increased by 30-40% and the output rate of combustion gas can be increased by 20%.
Description
Technical field
The present invention relates to a kind of gasification process, specifically relate to a kind of air-water vapor that utilizes and participate in the gasification process that gasification reaction is processed biological fuel gas as vaporized chemical.
Background technology
Biological fuel gas is a kind of green energy resource of alternative fossil energy; Its raw material is a biomass material; Like straw, bagasse, rice bar, rice husk (chaff), culled wood, bark, sawdust, wood chip etc.; Through equipment for gasification to its high temperature (more than 750 ℃) gasification reaction after, can make biological fuel gas.
Gasifying biomass is produced the biomass energy thermochemistry transform mode that combustion gas is a kind of advanced person, according to the difference of its gasifying medium, can be divided into air gasification, oxygen gasified, high-temperature water vapor gasification etc.Have reduced investment with air as the gasifying biomass that gasifying medium carries out, the advantage that operation possibility is strong is relatively more extensive in industrial application.But the combustible gas calorific value that this gasification technology produces is lower, has only 1000～1200Kcal/N m
3, hydrogen volume content has only 8～12%.Oxygen gasified is a kind of middle calorific value (2500～4300Kcal/N m that effectively produces
3) method of combustion gas, and it is simple to have technology, technology maturation, stable advantage.But oxygen gasified main drawback is to need the corresponding oxygen generating plant of a cover, even adopt better simply omnibus control system method, it once invests still very big.The high-temperature water vapor gasification also is a kind of middle calorific value (2400～3800Kcal/N m that effectively produces
3) method of combustion gas; But because the comparatively ideal temperature of biomass pyrolytic is more than 700 ℃; And main gasification reaction is that the reaction of coke and water vapor requires to have higher temperature, reaches effect preferably so will make to gasify, and the temperature of water vapor must be more than 700 ℃.And the gasification of biomass air-water vapor is that a kind of investment is relatively low, and the aerogenesis quality is gasification process preferably also.In this gasification, the needed heat of steam reformation can be supplied with by the partial combustion of biomass fuel.But this gasification mode is not used widely, and reason is that water vapor adding point is too concentrated, causes water vapor incomplete with mixing of anti-reactant; React insufficient; The output capacity of the biological fuel gas that finally causes preparing is low, and calorific value is low, can't heavy industrialization.
Summary of the invention
In order to solve the problem that prior art exists, the present invention provides a kind of can prepare high heating value, gasification process that aerogenesis is high.
In order to realize above purpose; Technical scheme of the present invention is following: a kind of biomass air-water vapor gasification process, and bubbling air in the combustion chamber of gasifying biomass device, firing biomass fuel produces reactant under normal pressure or pressure-fired condition; When the gasifier internal temperature reaches 750～1000 ℃; 120～160 ℃ the water vapor and the reactant that feed 0.2～0.8Mpa are participated in gasification reaction, through 1～2s reaction times, produce biological fuel gas.
Further, said water vapor/biomass fuel mass ratio S/B is 0～1.5.
Said air equivalent is 0.19～0.27 than ER.
In said gasification reaction process,, wherein one or both materials in interpolation rhombspar, peridotites, the aluminum oxide are as catalyzer.
Compared with prior art, on the basis of traditional gasification process, the step that water vapor is participated in gasification reaction is introduced in increase, and reactant and the further reaction of water vapor that the biomass fuel thermal decomposition burning is produced make middle calorific value (1800～2000Kcal/N m
3) biological fuel gas, calorific value improves 30～40%, the combustion gas output capacity improves 20%; And; In entire reaction course, the required heat energy source of gasification reaction is in aflame biomass fuel, and that realizes gasification reaction need not external heat from heat supplied; Remove outside heat supply step, saved external energy.
Description of drawings
Fig. 1 is the structural representation of gasifier.
Below, in conjunction with most preferred embodiment the present invention is further specifically described.
Embodiment
The process of biomass air of the present invention-water vapor gasification process is following: bubbling air in the combustion chamber of gasifying biomass device; Control air equivalence ratio ER is 0.25, adds catalyzer, like rhombspar, peridotites, aluminum oxide etc.; Firing biomass fuel produces reactant (biomass carbon and reactant gases) under normal pressure or pressure-fired condition; When the gasifier internal temperature reached 850 ℃ of left and right sides, 120 ℃ the water vapor and the reactant that feed 0.6Mpa were participated in gasification reaction, and control water vapor/biomass fuel mass ratio S/B is 0.5; Through the 2s reaction times, produce biological fuel gas.
Realize gasifier of the present invention, as shown in Figure 1, adopt one 0.5 ton/time vapourizing furnace, be best with the fluidized-bed.The body of heater 1 of gasifier connects water vapor pipeline assembly, high-temperature water vapor is provided for the combustion chamber 2 in the body of heater 1.The combustion chamber is the cylindrical body of hollow.The wall body of body of heater 1 (combustion chamber) is offered three through holes 10, and through hole 10 is circumference on the xsect of body of heater 1 arranges that evenly the position of through hole 10 is positioned at zone of combustion.Water vapor pipeline assembly is made up of three road water vapor pipelines 11, water vapor divider 3 and water vapor house steward 4.Water vapor divider 3 is the circle shape, and circle side connects three road water vapor pipelines 11 in it, and each road water vapor pipeline 11 also is circumference evenly to be arranged, each road water vapor pipeline 11 is communicated with through hole 10 straight lines.The inlet of water vapor divider 3 connects water vapor house steward 4, and outlet connects drain valve 12.Each road water vapor pipeline 11 all is equipped with tensimeter 13 and stopping valve 9.Water vapor house steward 4 is equipped with tensimeter 6, under meter 7 and reducing valve 8.One 0.5 ton of the total pipe coupling of water vapor/time steam boiler 5.
Claims (4)
1. biomass air-water vapor gasification process; It is characterized in that: bubbling air in the combustion chamber of gasifying biomass device; Firing biomass fuel produces reactant under normal pressure or pressure-fired condition, and when the gasifier internal temperature reached 750～1000 ℃, 120～160 ℃ the water vapor and the reactant that feed 0.2～0.8Mpa were participated in gasification reaction; Through 1～2s reaction times, produce biological fuel gas.
2. gasification process according to claim 1 is characterized in that, said water vapor/biomass fuel mass ratio S/B is 0～1.5.
3. gasification process according to claim 1 is characterized in that, said air equivalent is 0.19～0.27 than ER.
4. according to claim 2 or 3 described gasification process, it is characterized in that in said gasification reaction process, wherein one or both materials in interpolation rhombspar, peridotites, the aluminum oxide are as catalyzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101736733A CN102367391A (en) | 2011-06-24 | 2011-06-24 | Biomass air-water vapor gasification method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101736733A CN102367391A (en) | 2011-06-24 | 2011-06-24 | Biomass air-water vapor gasification method |
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| CN102367391A true CN102367391A (en) | 2012-03-07 |
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| CN2011101736733A Pending CN102367391A (en) | 2011-06-24 | 2011-06-24 | Biomass air-water vapor gasification method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101805638A (en) * | 2010-04-06 | 2010-08-18 | 山东省科学院能源研究所 | Biomass gasification method |
| CN101928607A (en) * | 2010-05-19 | 2010-12-29 | 酒泉市绿炬能源科技开发有限责任公司 | High-low temperature cycling four-layer separation decoking method during biomass gasification process |
| US20110065815A1 (en) * | 2007-08-17 | 2011-03-17 | Masayasu Sakai | Method and apparatus for production of hydrocarbon from biomass |
-
2011
- 2011-06-24 CN CN2011101736733A patent/CN102367391A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110065815A1 (en) * | 2007-08-17 | 2011-03-17 | Masayasu Sakai | Method and apparatus for production of hydrocarbon from biomass |
| CN101805638A (en) * | 2010-04-06 | 2010-08-18 | 山东省科学院能源研究所 | Biomass gasification method |
| CN101928607A (en) * | 2010-05-19 | 2010-12-29 | 酒泉市绿炬能源科技开发有限责任公司 | High-low temperature cycling four-layer separation decoking method during biomass gasification process |
Non-Patent Citations (1)
| Title |
|---|
| 吕鹏梅等: "生物质在流化床中的空气-水蒸气气化研究", 《燃料化学学报》, vol. 31, no. 4, 31 August 2003 (2003-08-31), pages 305 - 310 * |
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