CN103509577A - Process for preparing bio oil from cotton stalk through biomass vacuum pyrolysis liquification - Google Patents
Process for preparing bio oil from cotton stalk through biomass vacuum pyrolysis liquification Download PDFInfo
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- CN103509577A CN103509577A CN201210234599.6A CN201210234599A CN103509577A CN 103509577 A CN103509577 A CN 103509577A CN 201210234599 A CN201210234599 A CN 201210234599A CN 103509577 A CN103509577 A CN 103509577A
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Abstract
The invention discloses a process for preparing bio oil from cotton stalk through biomass vacuum pyrolysis liquification. The process comprises the following steps: (1) taking an appropriate amount of biomass, drying naturally, removing impurities, crushing, drying to the constant weight, and placing in a dryer for later use; (2) placing the treated cotton stalk biomass into a reactor, vacuumizing to 10kPa, stabilizing for 15-30 minutes, heating, warming to 400-600 DEG C, and pyrolyzing continuously for 60 minutes after reaching the pyrolysis temperature; (3) vacuumizing continuously after reaction, extracting pyrolysis steam from the reactor, cooling condensable gases by circulation water and three-level ice-salt bath so as to obtain bio oil, and collecting uncondensed gases by a gas collector. Preferably, the temperature rise speed is 50 DEG C/min. The process for preparing bio oil from cotton stalk through biomass vacuum pyrolysis liquidation, which is provided by the invention, has the beneficial effects that cotton stalk is liquefied into bio oil; the volume is reduced greatly, and the bio oil is convenient to store and transport; meanwhile the environment pollution problem caused by cotton stalk combustion is also prevented.
Description
Technical field
The invention belongs to resource and environment field, particularly relate to a kind of preparation method of biomass fuel.
Background technology
Now, the energy and environmental problem have become the focus of global concern, coal, oil and natural gas are the main sources as fuel and organic chemistry raw material all the time, but along with fossil energy is day by day exhausted and environmental problem is day by day serious, develop the urgent problem that clean renewable energy source has become our times.Biomass are a kind of multifarious Energy resources, worldwide have a wide range of applications.As a kind of effective substitute energy, it is only second to coal, oil, Sweet natural gas and occupy the 4th of world energy sources total quantity consumed.The amount of occurring in nature biomass is very large, again because of its renewable circulation, can greatly reduce environmental pollution, has very large DEVELOPMENT PROSPECT.
The by product that cotton stalk is Cotton Industry, its output is generally 3～5 times of output of cotton.In recent years, China's year, cotton stalk output can reach 2280～3,800 ten thousand tons, and cotton stalk Biomass Energy Resources is quite abundant.Relevant result of laboratory test shows, cotton stalk contains more than 30% Kohlenhydrate, 2%～4% protein and 0.5%～1% fat.Analyze according to the study, in cotton stalk, contained digestible energy is 2235kJ/kg, but process the conventional method of cotton stalk, still burns, and this method is not only wasted, and has caused certain environmental pollution.Make full use of cotton stalk biomass resource, to alleviating China's energy and environmental stress tool, be of great significance.
Summary of the invention
The present invention is directed to the problem in existing environmental protection ight soil processing, a kind of method that adopts the bright excrement of ox to prepare biomass fuel is provided.
Technical scheme of the present invention: a kind of cotton stalk biomass vacuum pyrolysis liquefaction is prepared the technique of bio oil, comprises the steps:
(1) get appropriate cotton stalk biomass, natural air drying, removal of impurities, fragmentation, and be dried to constant weight, be placed in moisture eliminator standby;
(2) the cotton stalk biomass of handling well are placed in to reactor, are evacuated to 10kPa, stablize after 15-30min, be heated to 400-600 ℃, continue pyrolysis 60min after reaching pyrolysis temperature;
(3) after reaction finishes, continue to vacuumize, pyrolysis steam is detached to reactor, condensable gases is bathed the cooling bio oil that obtains through circulating water and three grades of cryosels, and incondensable gas is collected through gas trap.
Preferably, described heat-up rate is 50 ℃/min.
Beneficial effect of the present invention: the present invention is bio oil by cotton stalk liquefaction, and volume reduces greatly, convenient storage and transportation; Also problem of environmental pollution simultaneously that avoided burning cotton stalk to produce.
Embodiment
Below the present invention is further illustrated.
Embodiment 1:
Cotton stalk biomass vacuum pyrolysis liquefaction is prepared a technique for bio oil, comprises the steps:
(1) get appropriate cotton stalk biomass, natural air drying, removal of impurities, fragmentation, and be dried to constant weight, be placed in moisture eliminator standby;
(2) the cotton stalk biomass of handling well are placed in to reactor, are evacuated to 10kPa, stablize after 15min, with the speed program of 50 ℃/min, be warming up to 400 ℃, continue pyrolysis 60min after reaching pyrolysis temperature;
(3) after reaction finishes, continue to vacuumize, pyrolysis steam is detached to reactor, condensable gases is bathed the cooling bio oil that obtains through circulating water and three grades of cryosels, and incondensable gas is collected through gas trap.
Embodiment 2:
Cotton stalk biomass vacuum pyrolysis liquefaction is prepared a technique for bio oil, comprises the steps;
(1) get appropriate cotton stalk biomass, natural air drying, removal of impurities, fragmentation, and be dried to constant weight, be placed in moisture eliminator standby:
(2) the cotton stalk biomass of handling well are placed in to reactor, are evacuated to 10kPa, stablize after 30min, with the speed program of 50 ℃/min, be warming up to 600 ℃, continue pyrolysis 60min after reaching pyrolysis temperature;
(3) after reaction finishes, continue to vacuumize, pyrolysis steam is detached to reactor, condensable gases is bathed the cooling bio oil that obtains through circulating water and three grades of cryosels, and incondensable gas is collected through gas trap.
Embodiment 3:
Cotton stalk biomass vacuum pyrolysis liquefaction is prepared a technique for bio oil, comprises the steps:
(1) get appropriate cotton stalk biomass, natural air drying, removal of impurities, fragmentation, and be dried to constant weight, be placed in moisture eliminator standby;
(2) the cotton stalk biomass of handling well are placed in to reactor, are evacuated to 10kPa, stablize after 20min, with the speed program of 50 ℃/min, be warming up to 500 ℃, continue pyrolysis 60min after reaching pyrolysis temperature;
(3) after reaction finishes, continue to vacuumize, pyrolysis steam is detached to reactor, condensable gases is bathed the cooling bio oil that obtains through circulating water and three grades of cryosels, and incondensable gas is collected through gas trap.
Claims (2)
1. cotton stalk biomass vacuum pyrolysis liquefaction is prepared a technique for bio oil, it is characterized in that: comprise the steps:
(1) get appropriate cotton stalk biomass, natural air drying, removal of impurities, fragmentation, and be dried to constant weight, be placed in moisture eliminator standby;
(2) the cotton stalk biomass of handling well are placed in to reactor, are evacuated to 10kPa, stablize after 15-30min, be heated to 400-600 ℃, continue pyrolysis 60min after reaching pyrolysis temperature;
(3) after reaction finishes, continue to vacuumize, pyrolysis steam is detached to reactor, condensable gases is bathed the cooling bio oil that obtains through circulating water and three grades of cryosels, and incondensable gas is collected through gas trap.
2. a kind of cotton stalk biomass vacuum pyrolysis liquefaction according to claim 1 is prepared the technique of bio oil, it is characterized in that: described heat-up rate is 50 ℃/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210234599.6A CN103509577A (en) | 2012-06-30 | 2012-06-30 | Process for preparing bio oil from cotton stalk through biomass vacuum pyrolysis liquification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210234599.6A CN103509577A (en) | 2012-06-30 | 2012-06-30 | Process for preparing bio oil from cotton stalk through biomass vacuum pyrolysis liquification |
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| Publication Number | Publication Date |
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| CN103509577A true CN103509577A (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210234599.6A Pending CN103509577A (en) | 2012-06-30 | 2012-06-30 | Process for preparing bio oil from cotton stalk through biomass vacuum pyrolysis liquification |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104498062A (en) * | 2014-09-01 | 2015-04-08 | 湖南启天环保科技有限公司 | Vacuum pyrolysis technology |
| CN116144334A (en) * | 2021-11-23 | 2023-05-23 | 中国石油大学(北京) | Application of biomass extract in viscosity reduction and hydrodynamic cavitation treatment of crude oil |
-
2012
- 2012-06-30 CN CN201210234599.6A patent/CN103509577A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104498062A (en) * | 2014-09-01 | 2015-04-08 | 湖南启天环保科技有限公司 | Vacuum pyrolysis technology |
| CN104498062B (en) * | 2014-09-01 | 2015-11-11 | 湖南启天环保科技有限公司 | A kind of vacuum pyrolysis technology |
| CN116144334A (en) * | 2021-11-23 | 2023-05-23 | 中国石油大学(北京) | Application of biomass extract in viscosity reduction and hydrodynamic cavitation treatment of crude oil |
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Application publication date: 20140115 |