CN101629188A - Soybean straw industrialization methane production and method for extracting cellulose and lignin - Google Patents
Soybean straw industrialization methane production and method for extracting cellulose and lignin Download PDFInfo
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- CN101629188A CN101629188A CN200910072694A CN200910072694A CN101629188A CN 101629188 A CN101629188 A CN 101629188A CN 200910072694 A CN200910072694 A CN 200910072694A CN 200910072694 A CN200910072694 A CN 200910072694A CN 101629188 A CN101629188 A CN 101629188A
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention provides a technical method which uses soybean straw as main raw material to industrially produce methane in large scale, and simultaneously extracts cellulose and lignin from waste residue from fermented and decomposed organisms so that soybean straw is fully utilized, the economic benefit is increased and the industrialization production benefit is obvious. The produced methane can be directly used for generating electricity, resident gas and the like; the methane also can be compressed so that carbon dioxide gas is liquefied and separated and the content of the methane in the methane reaches more than 85%; the methane is stored in high pressure and used for environmental protection material of automobiles. The extracted cellulose and lignin are used for papermaking and chemical industry raw materials.
Description
Technical field
The present invention relates to the method for a kind of soybean straw industrialization methane production and extraction Mierocrystalline cellulose and xylogen, belong to renewable energy source and technical field of resource environments.
Background technology
Present global petroleum resources worsening shortages, oil price is high, as the biomass marsh gas technology of renewable energy source application and the development of decades has been arranged, but has been the middle-size and small-size production method of peasant household's formula mostly, its purpose one is to handle excrement of animals and part agricultural crop straw, reduces environmental pollution; The 2nd, produce biogas and substitute the part energy.
The Heilongjiang Province is China soybean main producing region, and 2006～2008 annual soybean acreage fifty-five million mus are produced 9000000 tons of soybean stalks per year, and wherein about 20～25% are used for animal feed, about 10～15% is used for the rural area and burns bavin, and most of burned or rotten naturally.Simultaneously the Heilongjiang Province is an extremely frigid zones, winter minimum temperature-20～-30 ℃, and the utmost point is unfavorable for the production of the middle-size and small-size biogas in rural area.
The present invention is that a kind of soybean stalk that utilizes is main raw material, large industrialized is produced the processing method of biogas, extracts Mierocrystalline cellulose and xylogen the waste residue after biological fermentation decomposes simultaneously, and soybean stalk is fully utilized, improved economic benefit, the suitability for industrialized production remarkable benefit.The biogas of producing can be directly used in generating, resident's combustion gas etc., also the biogas compression can be made carbon dioxide liquefaction separation, makes that methane content reaches more than 85% in the biogas, and high-pressure storage is used for the environmental protection fuel of automobile.The Mierocrystalline cellulose and the xylogen that extract are used for papermaking and industrial chemicals.
Summary of the invention
The invention provides a kind of is main raw material with the soybean stalk, extracts the method for Mierocrystalline cellulose, xylogen large industrialized producing methane and the waste residue after biological fermentation decomposes, and its concrete steps are as follows:
One, raw materials pretreatment
1, with end sieve 3～10 purpose beater grinder crushing straw;
2, with continuous Steam explosive machine the stalk of pulverizing is carried out the quick-fried processing of vapour, its vapor pressure 2～3MPa, pressure hold time 50～120 seconds;
3, in the continuously stirring mixing machine, with the biogas composite fungus agent and the separated natural pond liquid clear liquid that add 0.1～0.3% in the stalk after the quick-fried processing of vapour, making the raw material water ratio is 65～70%, mixes;
Two, raw material acidifying fermentation
1, add the stalk mix in the acidification reaction jar, add-on is a tank body volumetrical 50～60%, and temperature is 35～40 ℃ in the heat tracing controlling tank, goes into pressurized air 5～10 minutes, aerobic fermentation 2～3 days from the jar pucking in 4～6 hours at interval;
2, add separated natural pond liquid clear liquid in the souring tank behind aerobic fermentation,, be incubated 35～40 ℃ to tank body volumetrical 90～95%, anaerobic acidification fermentation 5～15 days, and keep fermentating liquid PH value less than 6, available in case of necessity dilute hydrochloric acid is regulated;
3, after acidifying fermentation is finished, isolate the bigger silt of proportion with wet cyclone, isolate the solid residue that main component is Mierocrystalline cellulose and xylogen with 20～50 vibrations filter sieve again, residue is used the plate-and-frame filter press press filtration again, and filtrate is all sent to biogas fermentation;
Three, biogas fermentation
1, in the filtrate behind the acidifying fermentation, its organic content is about 10～20%, it is pumped into marsh-gas fermentation tank, add-on is a tank body volumetrical 65～70%, regulate pH value 6.5～7.5 with liming, the isolating natural pond liquid suspension liquid that adds tank body volume 20～25% again is as inoculum, and cubic capacity is a tank body volumetrical 90%;
2, controlled temperature is 35～40 ℃, carries out anaeration in normal temperature fermentation 15～30 days, collects the biogas that produces;
3, the natural pond liquid after the fermentation separates with spiral separating machine, isolates 55～70% natural pond liquid clear liquid, the annex solution that is used for acidifying fermentation, 20～30% natural pond liquid suspension liquid is used for the bacterial classification substrate annex solution of biogas fermentation, 10～15% mud is done fertilizer after focusing on;
Four, the extraction of Mierocrystalline cellulose and xylogen
1, isolated solid residue behind the acidifying fermentation adds in the reactor, adds 2～15% sodium hydroxide solution, solid-to-liquid ratio 20～30: 70～80, stir and be heated to 80～100 ℃, and dissolved 2～5 hours;
2, filter residue is isolated in centrifuging, and main component is Mierocrystalline cellulose and hemicellulose, after bleaching, drying treatment, obtains cellulose finished product again;
3, filtrate is regulated pH value 5～7 with diluted acid, and the xylogen precipitation is separated out, and xylogen is isolated in centrifuging, obtains the xylogen finished product after washing, the drying;
4, waste liquid is through aerobic quick-fried gas biochemical treatment, discharged wastewater met the national standard.
This patent method has following characteristics:
1, in the soybean stalk, C: the N ratio is 32: 1, behind acidifying fermentation, isolate about 30% be the carbon source solid residue of main component with Mierocrystalline cellulose and xylogen, C in the acidizing fluid: the N ratio rises to 20～30: 1, suitable biogas fermentation need not additionally add the nitrogenous source raw material after neutralizing.
2, the biogas composite fungus agent contains the composite flora of decomposition of cellulose, hemicellulose, xylogen, it is the biological compound fungi agent of handling stalk, the internal structure of stalk is limbered up, loosen, utilize so that anaerobion is decomposed, and safe, nontoxic, harmless.
3, the whole recycles of the waste water in the biogas production process, the waste water in Mierocrystalline cellulose and the lignin extraction process, a part of reusable edible after aerobic quick-fried gas biochemical treatment, redundance qualified discharge.
4, after the biogas of collecting is handled through desulfurization, can be directly used in boiler, generating, resident's combustion gas etc., also can will be pressurized to 8MPa under the biogas normal temperature, carbon dioxide liquefaction, isolate carbonic acid gas, make that methane content reaches more than 85% in the biogas, inflammable gas content reaches (volume ratio) more than 90%, be pressurized to 20～25MPa again, high-pressure storage is used for the environmental protection fuel of automobile.Liquefied carbon dioxide is used for carbon dioxide-shielded welding or makes dry ice being used for refrigeration agent etc.
5, utilize this patent method, but 450～480 cubic metres of biogas under one ton of stalk production standard situation, behind the liquefaction separating carbon dioxide, methane content reaches 310～340 cubic metres of biogas, liquid carbon dioxide 230～240kg more than 85%.But extraction separation goes out xylogen 50～60kg, Mierocrystalline cellulose 120～140kg in the acidifying fermentation residue.Economic benefit and social benefit are very remarkable.
Figure of description is a process flow sheet.
Embodiment
Embodiment:
Handle 30000 tons of soybean stalks per year, as a productive unit, stalk water ratio 20% calculates, and per hour handles 4.17 tons of soybean stalks, 3.33 tons of its oven dry weights.Aerobic fermentation and acidifying fermentation processing cycle calculated by 15 days, and the biogas fermentation processing cycle was calculated 50 cubic metres of each tank body volumes by 25 days, calculate according to material balance, need 90 in acidifying fermentation jar, 210 of marsh-gas fermentation tanks, amount to 300,15000 cubic metres of cubic capacitys.The continuous Steam explosive machine of 5 tons of/hour processing poweies is selected in the quick-fried processing of vapour for use.Wet cyclone is selected 6～10 grades of wet cyclones of 12～15 cubic metres of/hour processing poweies for use.It is clear liquid 60～75%, suspension liquid 20～30%, mud 10～15% that spiral separator is selected segregation ratio, 16～20 cubic metres/hour of processing poweies.Boiler is selected the steam boiler of 6t/h, 4MPa; Air compressor selective pressure 1MPa, air demand 2m3/min.
Above major equipment as a productive unit has constituted a production line, but independent operating also can select many production line parallel runnings to enlarge output according to raw material and product demand.
Production process is as follows:
One, raw materials pretreatment
1, sieves 5 purpose beater grinder crushing straws the end of with;
2, with continuous Steam explosive machine the stalk of pulverizing is carried out the quick-fried processing of vapour, its vapor pressure 2.5MPa, pressure hold time 90 seconds;
3, in the continuously stirring mixing machine, with the biogas composite fungus agent and the separated natural pond liquid clear liquid that add 0.2% in the stalk after the quick-fried processing of vapour, making the raw material water ratio is 65～70%, mixes.
Two, raw material acidifying fermentation
1, add the stalk mix in the acidification reaction jar, add-on is a tank body volumetrical 50～60%, and temperature is 35～40 ℃ in the heat tracing controlling tank, goes into pressurized air 5 minutes, aerobic fermentation 2～3 days from the jar pucking in 4 hours at interval;
2, add separated natural pond liquid clear liquid in the souring tank behind aerobic fermentation,, be incubated 37 ℃ to tank body volumetrical 90%, anaerobic acidification fermentation 12～13 days, and keep fermentating liquid PH value less than 6, available in case of necessity dilute hydrochloric acid is regulated;
3, after acidifying fermentation is finished, isolate the bigger silt of proportion with wet cyclone, isolate the solid residue that main component is Mierocrystalline cellulose and xylogen with 20 vibrations filter sieve again, residue is used the plate-and-frame filter press press filtration again, and filtrate is all sent to biogas fermentation.
Three, biogas fermentation
1, in the filtrate behind the acidifying fermentation, its organic content is about 18～20%, it is pumped into marsh-gas fermentation tank, add-on is a tank body volumetrical 65～70%, regulate pH value 6.5～7.5 with liming, the isolating natural pond liquid suspension liquid that adds tank body volume 20～25% again is as inoculum, and cubic capacity is a tank body volumetrical 90%;
2, controlled temperature is 35～40 ℃, carries out anaeration in normal temperature fermentation 25 days, collects the biogas that produces;
3, the natural pond liquid after the fermentation separates with spiral separating machine, isolates 55～70% natural pond liquid clear liquid, the annex solution that is used for acidifying fermentation, 20～30% natural pond liquid suspension liquid is used for the bacterial classification substrate annex solution of biogas fermentation, 10～15% mud is done fertilizer after focusing on.
Four, the extraction of Mierocrystalline cellulose and xylogen
1, isolated solid residue behind the acidifying fermentation adds in the reactor, adds 5% sodium hydroxide solution, solid-to-liquid ratio 20～30: 70～80, stir and be heated to 80～100 ℃, and dissolved 5 hours;
2, filter residue is isolated in centrifuging, and main component is Mierocrystalline cellulose and hemicellulose, after bleaching, drying treatment, obtains cellulose finished product again;
3, filtrate is regulated pH value 5～7 with diluted acid, and the xylogen precipitation is separated out, and xylogen is isolated in centrifuging, obtains the xylogen finished product after washing, the drying;
4, waste liquid is through aerobic quick-fried gas biochemical treatment, discharged wastewater met the national standard.
Claims (5)
1, the method for soybean straw industrialization methane production and extraction Mierocrystalline cellulose and xylogen is characterized in that adopting following steps to realize:
A, raw materials pretreatment;
B, raw material acidifying fermentation;
C, biogas fermentation;
The extraction of D, Mierocrystalline cellulose and xylogen.
2, the method for soybean straw industrialization methane production according to claim 1 and extraction Mierocrystalline cellulose and xylogen is characterized in that raw materials pretreatment employing following steps realize:
A, with end sieve 3～10 purpose beater grinder crushing straws;
B, the stalk of pulverizing is carried out the quick-fried processing of vapour, its vapor pressure 2～3MPa, pressure hold time 50～120 seconds with continuous Steam explosive machine;
C, in the continuously stirring mixing machine, with the biogas composite fungus agent and the separated natural pond liquid clear liquid that add 0.1～0.3% in the stalk after the quick-fried processing of vapour, making the raw material water ratio is 65～70%, mixes.
3, the method for soybean straw industrialization methane production according to claim 1 and extraction Mierocrystalline cellulose and xylogen is characterized in that the raw material acidifying fermentation adopts following steps to realize:
A, add the stalk mix in the acidification reaction jar, add-on is a tank body volumetrical 50～60%, and temperature is 35～40 ℃ in the heat tracing controlling tank, goes into pressurized air 5～10 minutes, aerobic fermentation 2～3 days from the jar pucking in 4～6 hours at interval;
Add separated natural pond liquid clear liquid in b, the souring tank behind aerobic fermentation,, be incubated 35～40 ℃ to tank body volumetrical 90～95%, anaerobic acidification fermentation 5～15 days, and keep fermentating liquid PH value less than 6, available in case of necessity dilute hydrochloric acid is regulated;
After c, acidifying fermentation are finished, isolate the bigger silt of proportion with wet cyclone, isolate the solid residue that main component is Mierocrystalline cellulose and xylogen with 20～50 vibrations filter sieve again, residue is used the plate-and-frame filter press press filtration again, and filtrate is all sent to biogas fermentation.
4, the method for soybean straw industrialization methane production according to claim 1 and extraction Mierocrystalline cellulose and xylogen is characterized in that biogas fermentation adopts following steps to realize:
In the filtrate behind a, the acidifying fermentation, its organic content is about 10～20%, it is pumped into marsh-gas fermentation tank, add-on is a tank body volumetrical 65～70%, regulate pH value 6.5～7.5 with liming, the isolating natural pond liquid suspension liquid that adds tank body volume 20～25% again is as inoculum, and cubic capacity is a tank body volumetrical 90%;
35～40 ℃ of b, controlled temperature carry out anaeration in normal temperature fermentation 15～30 days, collect the biogas that produces;
Natural pond liquid after c, the fermentation separates with spiral separating machine, isolates 55～70% natural pond liquid clear liquid, the annex solution that is used for acidifying fermentation, 20～30% natural pond liquid suspension liquid is used for the bacterial classification substrate annex solution of biogas fermentation, 10～15% mud is done fertilizer after focusing on.
5, the method for soybean straw industrialization methane production according to claim 1 and extraction Mierocrystalline cellulose and xylogen is characterized in that the extraction of Mierocrystalline cellulose and xylogen adopts following steps to realize:
Isolated solid residue behind a, the acidifying fermentation adds in the reactor, adds 2～15% sodium hydroxide solution, solid-to-liquid ratio 20～30: 70～80, stir and be heated to 80～100 ℃, and dissolved 2～5 hours;
Filter residue is isolated in b, centrifuging, and main component is Mierocrystalline cellulose and hemicellulose, after bleaching, drying treatment, obtains cellulose finished product again;
C, filtrate are regulated pH value 5～7 with dilute hydrochloric acid, and the xylogen precipitation is separated out, and xylogen is isolated in centrifuging, obtains the xylogen finished product after washing, the drying;
D, waste liquid are through aerobic quick-fried gas biochemical treatment, discharged wastewater met the national standard.
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| CN101884998A (en) * | 2010-07-16 | 2010-11-17 | 江南大学 | Energy/resource coupling utilization technology of crop straws |
| CN102094047A (en) * | 2010-12-14 | 2011-06-15 | 广东中科天元新能源科技有限公司 | Device and method for acidifying raw materials and removing sand in ethanol production |
| CN102261008A (en) * | 2011-07-13 | 2011-11-30 | 王升全 | Method for extracting natural fibre from herbaceous plants |
| CN102321672A (en) * | 2010-06-04 | 2012-01-18 | 陈乃富 | Preacidizing method for steam-exploded material washing liquid for biogas production by anaerobic fermentation |
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| CN106967588A (en) * | 2017-03-24 | 2017-07-21 | 黑龙江中丹建业生物能源有限公司 | Biological material forms methane device and generation method |
| CN107109793A (en) * | 2014-10-03 | 2017-08-29 | 纳菲奇环境研究（Ner）有限公司 | A kind of method for processing stalk |
| CN109336653A (en) * | 2018-09-03 | 2019-02-15 | 柯玉环 | A method of carbon dioxide is prepared using stalk |
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| CN109536537A (en) * | 2018-12-13 | 2019-03-29 | 青岛合能环境技术有限公司 | A kind of industrialized producing technology for accelerating stalk hydrolysis acidification |
| CN111004055A (en) * | 2019-10-30 | 2020-04-14 | 四川深蓝环保科技有限公司 | Resourceful treatment method for mixture of straw and livestock manure |
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| CN102321672B (en) * | 2010-06-04 | 2014-06-18 | 陈乃富 | Preacidizing method for steam-exploded material washing liquid for biogas production by anaerobic fermentation |
| CN101884998A (en) * | 2010-07-16 | 2010-11-17 | 江南大学 | Energy/resource coupling utilization technology of crop straws |
| CN102094047A (en) * | 2010-12-14 | 2011-06-15 | 广东中科天元新能源科技有限公司 | Device and method for acidifying raw materials and removing sand in ethanol production |
| CN102094047B (en) * | 2010-12-14 | 2012-10-03 | 广东中科天元新能源科技有限公司 | Device and method for acidifying raw materials and removing sand in ethanol production |
| CN102261008A (en) * | 2011-07-13 | 2011-11-30 | 王升全 | Method for extracting natural fibre from herbaceous plants |
| CN102261008B (en) * | 2011-07-13 | 2013-04-24 | 王升全 | Method for extracting natural fibre from herbaceous plants |
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| CN107109793A (en) * | 2014-10-03 | 2017-08-29 | 纳菲奇环境研究（Ner）有限公司 | A kind of method for processing stalk |
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| CN104818298A (en) * | 2015-03-31 | 2015-08-05 | 北京中科诚毅科技发展有限公司 | Method and device for producing methane gas and lignin from straws |
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| CN106967588A (en) * | 2017-03-24 | 2017-07-21 | 黑龙江中丹建业生物能源有限公司 | Biological material forms methane device and generation method |
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| CN109536537A (en) * | 2018-12-13 | 2019-03-29 | 青岛合能环境技术有限公司 | A kind of industrialized producing technology for accelerating stalk hydrolysis acidification |
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| CN112342841A (en) * | 2020-10-30 | 2021-02-09 | 四川凤生纸业科技股份有限公司 | Green ball treatment process and system |
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Application publication date: 20100120 |