CN102304106B - Method for producing butanol, acetone, butyric acid and furfural by fermentation of hemicellulose-rich biomass - Google Patents
Method for producing butanol, acetone, butyric acid and furfural by fermentation of hemicellulose-rich biomass Download PDFInfo
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Abstract
The invention provides a method for producing butanol, acetone, butyric acid and furfural by fermentation of hemicellulose-rich biomass. The method comprises the following steps: hydrolyzing, namely, adding an acetic acid aqueous solution to the biomass, and hydrolyzing hemicellulose to form a solution containing saccharides and furfural at the hydrolysis temperature of 120-200 DEG C; separating out furfural, namely, separating out furfural from the solution or filtrate containing saccharides and furfural by using a permeation and vaporization membrane separator; fermenting, namely, carrying out anaerobic fermentation on a hydrolysis liquid obtained after furfural is separated out in the presence of strains so as to be converted to fermentation broth containing a mixed solvent of butanol,acetone, ethanol and butyric acid; permeating, vaporizing and separating, namely, permeating butanol, acetone and butyric acid through a permeation and vaporization membrane so as to obtain separatedand concentrated liquid; and rectifying, namely, rectifying a mixed product which is collected after permeation and vaporization so as to obtain pure products of butanol, acetone and butyric acid. Byusing the method provided by the invention, biomass residues obtained after squeezing and degranulation are turned into wealth through a biomass refining method, and bulk chemicals such as butanol, acetone, butyric acid, furfural and the like can be produced.
Description
Technical field
The present invention relates to a kind of method that the hemicellulose biomass ferment is produced butanols, acetone, butyric acid and furfural that is rich in; Especially the carbon source through fermentation take the sweet sorghum slag as substratum utilizes infiltration evaporation device and rectifier unit separation and purification to produce the method for butanols, acetone, butyric acid and furfural.
Background technology
Acetone, butanols and ethanol all are important organic solvent and industrial chemicals, are widely used in spraying paint, explosive, plastics, pharmacy, vegetable oil extraction and synthetic glass, China Synthetic Rubber Industry.Acetone can be used as the solvent of making cellulose acetate film film, plastics and coating, also can be used for producing the Chemicals such as methyl methacrylate (MMA), dihydroxyphenyl propane, aldol(s).Butanols is the biofuel of a new generation, compares with existing biofuel, and the ratio of mixture of butanols and gasoline is higher, need not vehicle is transformed, and has remarkable environmental benefit, reduces greenhouse gas emission.Ethanol is good organic solvent and sterilizing agent, and its germicidal action is obvious, and sterilisation effect is reliable, and is little to people's pungency, nontoxic, harmless to article, multiplex in skin degerming and medicine equipment clinical disinfection.
In numerous methods of producing acetone and butanols, relatively ripe with the production technology of grain fermentative Production acetone, butanols.But along with petering out and ecological environment problem increasingly serious of petroleum resources, countries in the world begin to consider to utilize renewable resources to come the petroleum replacing resource, namely come the production bulk chemical to solve energy problem by the means of biotechnology.
The technology of the existing butanols of producing acetone is mainly take corn fermentation as main, and adopts part potato class, Chinese sorghum class to ferment simultaneously to reduce production costs with corn, but wherein ideal with pure corn fermentation production acetone, butanols effect.But fermenting with grain, not only cost is high, also can have influence on the stable of grain resource simultaneously.For this problem, various countries research institution all attempts carrying out with non-grain resource and replaces grain resource to carry out fermentation research as fermentation raw material.At present, studying the hottest is to replace the grain fermentation with stalk, but with stalk fermentation technology and immature, and its Main Problems is that the inhibition (such as furfural) of generation affects microbial growth in the fermenting process after the low and hydrolysis of stalk hydrolysis efficiency.Therefore, seek and the cheap suitable fermentation raw material of exploitation and to find the technique with its coupling be the key issue that acetone and production of butanol face, this also is the common issue with that whole fermentation industry faces.
Sweet sorghum (sweet sorghum) also cry the sweet bar of sorgo or sugared Chinese sorghum, is the mutation of grain sorghum, and its stalk has higher sugared content, is one of universally acknowledged energy-source plant.Its seed edible or make feed, and juice can be refined sugar after the sweet sorghum stalk squeezing exists and processes a difficult problem but produce a large amount of sweet sorghum slags that is rich in the hemicellulose class.At present, utilize the sweet sorghum slag to produce the report that rarely has of solvent butanols both at home and abroad.Sweet corn is improving the breed of a kind of corn, and its corn grain is as eating raw; Its stalk is similar to sweet sorghum stalk, is rich in carbohydrate, and after the squeezing, its residue is rich in hemicellulose.Bagasse is the product after the cane sugar manufacture squeezing, is rich in hemicellulose, generally as feed adding component, processes a difficult problem but a large amount of concentrated bagasse that produces exists.Corn cob is the remainder after corn fruit maturation and the threshing, is rich in hemicellulose; China is the big producing country of corn, and available stock is extremely abundant.
Infiltration evaporation is to utilize the selectivity of film to separate some organic constituent from solution, it is vaporized in film selectively see through.
Patent CN101805754A has described the technique of a kind of biomass ferment and infiltration vaporization coupling original position acetone, butanols and ethanol.Use this technique to compare with common rectifying, greatly reduce the energy consumption that ABE solvent that biomass ferment is produced separates, thereby reduce the production cost of fuel butanols.But the furfural that does not solve the hydrolysis generation in this patent will produce the problem of poisoning to bacterial strain in the follow-up fermenting process.
Summary of the invention
The invention provides a kind of method that the hemicellulose biomass ferment is produced butanols, acetone, butyric acid and furfural that is rich in, comprise the steps.Step B, hydrolysis: add acetic acid aqueous solution in described biomass, under 120～200 ℃ of hydrolysis temperatures, hydrolysis of hemicellulose is the solution that contains carbohydrate and furfural; Step D separates furfural: make described solution or the filtrate process infiltration evaporation membrane separation apparatus that contains carbohydrate and furfural, isolate furfural; Step e, fermentation: the hydrolyzed solution anaerobically fermenting under the effect of bacterial strain behind the separation furfural is converted into the fermented liquid that contains butanols, acetone, ethanol and butyric acid mixed solvent; Step G, infiltration evaporation separates: butanols, acetone and butyric acid see through infiltrating and vaporizing membrane and obtain separating concentrated in the described fermented liquid; Step H, rectifying: with the mixing prod that infiltration evaporation is collected, refining butanols, acetone and the butyric acid sterling of obtaining.
The preferred step B steps A before that also comprises, biomass pre-treatment: add the acetic acid aqueous solution pre-treatment after described biomass are pulverized.Acetic acid concentration is 2～10g/L in the acetic acid aqueous solution that more preferably adds among the described pre-treatment step A, and the solid-to-liquid ratio of pre-treatment step is 1: 2～1: 10.The present invention uses the acetic acid pre-treatment, and uses the acetolysis hemicellulose, only needs increasing temperature and pressure to a certain degree, just can avoid using sulphuric acid hydrolysis and causes the too high problem of hydrolyzed solution saltiness; And the acetic acid in the hydrolyzed solution can be utilized by the microorganism in the follow-up fermenting process, is conducive to microbial growth; Thereby avoid waste pollution environment in the last handling process.
In the embodiments of the invention, preferably also comprise the step C between step B and the step D, solid-liquid separation: the solid residue behind the described biomass by hydrolyzation is leached, obtain containing the filtrate of carbohydrate and furfural.More preferably also being included in the solid residue that leaches and adding cellulase, is carbohydrate with cellulose hydrolysis.
In fermentation step E of the present invention, selectable bacterial strain has clostridium acetobutylicum, clostridium saccharobutyricum or Bai Shi clostridium etc.
Also comprise the step F between step e and the step G among preferred the present invention, microfiltration membrane is separated: the fermented liquid of mycetome, carbohydrate and mixed solvent separates through microfiltration membrane, and concentration is back to fermentor tank.
The acetic acid total concn of the acetic acid that adds among the preferred hydrolysing step B of the present invention and hydrolysis stripping is 11～20g/L, and solid-to-liquid ratio is 1: 5～1: 10 in the hydrolysing step, and hydrolysis time is 5～60 minutes.
Preferably in step e, in the substratum of fermentor tank, add inorganic salt and somatomedin, and described bacterial strain is clostridium acetobutylicum.Inorganic salt are potassium primary phosphate, dipotassium hydrogen phosphate as described, and described somatomedin is benzaminic acid and vitamin H.Among the present invention, directly adding inorganic salt and somatomedin in the hydrolyzed solution that separates behind the furfural, regulate pH value to 5～6 with ammoniacal liquor, to getting final product direct fermentation after the hydrolyzed solution inoculation behind the separation furfural, the method of report is convenient, succinct compared to existing technology, and environmentally friendly, the generation of toxicological harmless material and salts substances and discharging.Among the present invention, preferred clostridium acetobutylicum is a kind of high high yield of anti-acetic acid butanols bacterial classification, uses this bacterial classification can maximally utilise acetic acid, improves the utilization ratio to the sugar of hydrolysis of hemicellulose output.
Preferably the acetic acid that does not see through infiltrating and vaporizing membrane among the step G is returned cover and be used for hydrolysing step B.
Being rich in the hemicellulose biomass described in preferred the present invention is waste agronomic crop, is preferably sweet sorghum slag, sweet corn kernel slag, sweet corn bar slag, bagasse or corn cob.These squeeze the juice and threshing after waste, its kind and kind are not limit, what store after fresh or dry does not limit.
Adopt the present invention can make the method for biomass slag by biorefinery after squeezing or the threshing turn waste into wealth the products such as production bulk chemical butanols, acetone, butyric acid and furfural.
Description of drawings
Fig. 1 is the equipment flowsheet of producing butanols, acetone, butyric acid and furfural among the present invention to be rich in the hemicellulose biomass ferment; The Reference numeral content interpret is as follows among the figure:
1 hydrolytic decomposition pot, 2 spin vibration sieves are divided filter, 3 first storage tanks, 4 first liquid pumps, 5 first infiltration evaporation membrane separation apparatuss, 6 first condensers, 7 first vacuum pumps, 8 second storage tanks, 9 enzymatic vessels, 10 strainers, 11 second liquid pumps, 12 fermentor tanks, 13 microfiltration membrane separators, 14 the 3rd storage tanks, 15 the 3rd liquid pumps, 16 second infiltration evaporation membrane separation apparatuss, 17 second condensers, 18 second vacuum pumps, 19 rectifying tower, 20 product storage tanks, 201 butanols storage tanks, 202 acetone storage tanks, 203 ethanol storage tanks, 204 butyric acid storage tanks, 205 furfural storage tanks.
Embodiment
In the present embodiment, the sweet sorghum slag behind the expressed juice of sweet sorghum stalk is as raw material, and its kind, water content and freshness are not limit.Sweet sorghum slag main component used in the present invention is Mierocrystalline cellulose, xylogen and hemicellulose; Wherein, hemicellulose level is about 45wt%.
Among the present invention, the qualitative, quantitative of acetic acid, acetone, butanols, ethanol, butyric acid is measured and is adopted gas chromatograph to detect, and carries out quantitative analysis with external standard method.Glucide in hydrolyzed solution and the fermented liquid adopts liquid chromatograph and ultraviolet and parallax detector to detect, and carries out qualitative and quantitative analysis with external standard method.
Actication of culture, preservation all use the clostridium enriched medium (to see microorganism culturing handbook Handbook on clostridia author: Peter Diirre among the present invention; Published in 2005; Publisher: Taylor ﹠amp; .Francis), first order seed and secondary seed all use hydrolyzed solution as substratum.
Of the present invention for separating of furfural the first infiltrating and vaporizing membrane and the second infiltrating and vaporizing membrane of being used for the pre-separation mixed solvent all can be selected from silicon rubber, poly-trimethyl silicane propine, polypropylene, polyhutadiene, polyvinylidene difluoride (PVDF) or derivatives thereof, styrene-butadiene rubber(SBR), paracril, EPDR, polyetheramides leading portion multipolymer or zeolite membrane material one or more.
Microfiltration membrane in the microfiltration membrane separator of the present invention is to be selected from pellumina, zirconium oxide film, oxidation titanium film, stainless steel membrane, polystyrene, polyvinylidene difluoride (PVDF), tetrafluoroethylene, nylon, polyester, polycarbonate, polyethylene, polypropylene, polysulfones, polyacrylonitrile or the cellulose membrane one or more, and the mean pore size of microfiltration membrane is 0.1-1 μ m.
Embodiment 1
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.Be preferred implementation of the present invention only below, protection scope of the present invention is not limited to this, and any those skilled in the art can be easy to the change of carrying out or change be encompassed within protection scope of the present invention in technical scope disclosed by the invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
The production method step of producing butanols, acetone, ethanol, butyric acid and furfural with the sweet sorghum slag comprises:
Steps A, sweet sorghum slag pre-treatment: for the sweet sorghum slag after squeezing the juice, mechanical disintegration to its particle diameter or length below 5 centimetres, use acetic acid aqueous solution (concentration of acetic acid is 5 grams per liters) pre-treatment, sweet sorghum slag amount is as reference frame take over dry (the rear 105 ℃ of oven dry of taking a sample are spent the night), and solid-to-liquid ratio is 1: 5.
Step B, hydrolysis: in the sweet sorghum slag, add acetic acid aqueous solution, and it is packed into autoclave or the withstand voltage fermentor tank of refrigerating unit, hydrolysis is 10 minutes under 170 ℃ of temperature and autogenous pressure, stripping acetic acid in the hydrolyzed solution (under the acidic conditions hydrolysis of hemicellulose discharge acetic acid) and to add the acetic acid total amount be 15 gram/L, solid-to-liquid ratio is roughly 1: 7 in the hydrolysing step, produce approximately 40-50 grams per liter of sugared concentration after every batch the hydrolysis, sugar consists of sucrose 3-5 grams per liter after the hydrolysis, glucose 15-25 grams per liter, fructose 10-15 grams per liter, wood sugar 7-10 grams per liter, below pectinose 3 grams per liters, and generate finite concentration furfural and hydroxymethylfurfural, aforementioned two kinds of materials are through pyrolytic conversion by glucose and xylose.In this hydrolysing step B, the percent hydrolysis of hemicellulose surpasses 75%; If temperature raises (being higher than 170 ℃), then percent hydrolysis raises, and high energy reaches 100%, but temperature raises and also follows furfural and hydroxymethylfurfural output obviously to increase.
Step C, solid-liquid separation: the solid residue after the sweet sorghum pulp water solution is leached, obtain containing the filtrate of carbohydrate and furfural.
Step D separates furfural: make described solution or the filtrate process infiltration evaporation membrane separation apparatus that contains carbohydrate and furfural, isolate furfural.By this step furfural content in the hydrolyzed solution is controlled at a minimum level, the output furfural is as byproduct simultaneously.Can select aforesaid various infiltrating and vaporizing membrane in this step, we select silicone rubber membrane to carry out infiltration evaporation at this.
Step e, fermentation: the hydrolyzed solution anaerobically fermenting under the effect of bacterial strain behind the separation furfural is converted into the fermented liquid that contains butanols, acetone, ethanol and butyric acid mixed solvent.Concrete experimental implementation is as follows: add in the aseptic nontoxic hydrolyzed solution ammoniacal liquor as nitrogenous source simultaneously take its adjusting pH as 5; Add as the phosphoric donor with potassium primary phosphate and each 0.1wt% of dipotassium hydrogen phosphate (with respect to the quality of substratum); Add as somatomedin with para-amino benzoic acid and each 2ppm/L of vitamin H; So far the substratum of fermentation prepares complete.The activated fermented bacterium of aseptic technique access in the above-mentioned substratum, it is the ATCC824 strain cultured solution, it is 2% that strain cultured solution accounts for the culture volume ratio, keeps 37 ℃ of leavening temperatures and begins fermentation, and timing sampling is analyzed mixed solvent content and substrate sugar content, through behind 6 days fully fermentings, produce butanols 8.5 grams per liters, acetone 4.2 grams per liters, ethanol 1.1 grams per liters, butyric acid 2.0 grams per liters, total solvent output is 16 grams per liters approximately.
Step F, microfiltration membrane is separated: when mixed solvent content reaches finite concentration in the fermented liquid, open bleeder valve, the fermented liquid of mycetome, carbohydrate and mixed solvent enters micro-filtration with certain flow velocity, thalline in the fermented liquid flows back in the fermentor tank, and filtrate (rest part in the fermented liquid) flows into container for storing liquid and enters next infiltration evaporation step.
Step G, infiltration evaporation separate: namely described in the filtrate of the fermented liquid of step e or step F in the mixed solvent butanols, acetone and butyric acid see through continuously membrane separation apparatus to the film opposite side, the feed liquid that does not see through is returned in the fermentor tank through after the heat exchange.Keep the infiltration evaporation separator to see through side in certain vacuum tightness, under the pressure difference effect, the solvent acetone in the fermented liquid, butanols and butyric acid are diffused into the side that sees through of film in the dissolving of film surface adsorption, collect in condenser and obtain concentrated solution.The present invention selects the infiltrating and vaporizing membrane that mixed solvent is had avidity, utilizes the difference of mixed solvent and water and other components solubleness and rate of diffusion in infiltrating and vaporizing membrane, preferentially sees through the mixed solvent component, so this process efficiency is high, the power consumption is low.Infiltration evaporation process of the present invention can be carried out under leavening temperature, need in advance fermented liquid be heated to higher temperature as distillation, and this is for realizing that continuously fermenting of biomass is favourable.In the present embodiment, the acetic acid that does not see through infiltrating and vaporizing membrane among the step G is returned cover and be used for hydrolysing step B.In addition, the ethanol in the mixed solvent can not see through this infiltrating and vaporizing membrane, the concentration that ethanol exists lower and its exist and do not affect fermentation and other steps, after ethanol reaches finite concentration, carry out again separating-purifying and obtain alcohol product.At this, preferred the second infiltrating and vaporizing membrane is identical with the first infiltrating and vaporizing membrane (step D) for separating of furfural.
Step H, rectifying: with the mixing prod that infiltration evaporation is collected, refining butanols, acetone and the butyric acid sterling of obtaining.
If stream adds fermentation substrate in the fermentor tank when sepn process is carried out, can be so that the fermenting process among the present invention be realized continuous operation.
With the corresponding production unit of production method step of producing butanols, acetone, ethanol, butyric acid and furfural with the sweet sorghum slag in above-described embodiment as shown in Figure 1:
It comprises that the hydrolytic decomposition pot 1, the spin vibration sieve that link to each other through pipeline divide filter 2, the first storage tank 3, the first liquid pump 4, the first infiltration evaporation membrane separation apparatus 5, the second storage tank 8, the second liquid pump 11, fermentor tank 12, microfiltration membrane separator 13, the 3rd storage tank 14, the 3rd liquid pump 15, the second infiltration evaporation membrane separation apparatus 16, the second condenser 17, rectifying tower 19 and product storage tank 20, other has the first condenser 6 and the first vacuum pump 7 to be serially connected on the first infiltration evaporation membrane separation apparatus 5, and the second vacuum pump 18 is connected on the second condenser 17.And divide filter 2 and 8 of the second storage tanks also to be connected with enzymatic vessel 9 and the strainer 10 that is connected in parallel with the first infiltration evaporation membrane separation apparatus 5 in described spin vibration sieve.Wherein, the entrance of described microfiltration membrane separator 13 is connected with fermentor tank 12 bottoms, and its top exit links to each other with fermentor tank 12 top entrances.And described the second infiltration evaporation membrane separation apparatus 16 top exits link to each other with a top entrance of hydrolytic decomposition pot 1.Product storage tank 20 comprises butanols storage tank 201, acetone storage tank 202, ethanol storage tank 203, butyric acid storage tank 204 and furfural storage tank 205, and wherein, front four all are connected to after the described rectifying tower 19, and furfural storage tank 205 is connected to after described the first condenser 6.
The material flow corresponding with aforesaid device is as follows:
Insert hydrolytic decomposition pot 1 through pretreated sweet sorghum slag, add acetic acid aqueous solution in the sweet sorghum slag, hydrolysis reaction is so that the hydrolysis of hemicellulose in the sweet sorghum slag is various carbohydrates and furfural under 170 ℃ of temperature and autogenous pressure.The material that contains carbohydrate and furfural enters spin vibration sieve and divides filter 2, carries out solid-liquid separation at this, and liquid enters the first storage tank 3 and pumps into the first infiltration evaporation membrane separation apparatus 5 through the first liquid pump 4; Solid residue divides the bottom of filter 2 to enter enzymatic vessel 9 and strainer 10 from spin vibration sieve, solid residue mainly comprises Mierocrystalline cellulose and xylogen two portions, cellulose hydrolysis is that carbohydrate, solid residue become the xylogen waste residue in enzymatic vessel, solid-liquid separation in strainer 10, the liquid carbohydrate and flow into the first infiltration evaporation membrane separation apparatus 5 after the second storage tank 8 in.The liquid that enters the first infiltration evaporation membrane separation apparatus 5 separates furfural and the concentrated furfural storage tank 205 of introducing through the Penetration carburetion of the first condenser 6 and the first vacuum pump 7, and carbohydrate (comprising sucrose, glucose, fructose, wood sugar and pectinose) is introduced in the second storage tank 8, and the carbohydrate solution that contains in the second storage tank 8 pumps into fermentor tank 12 through the second liquid pump 11.In fermentor tank 12, carbohydrate is converted into butanols, acetone, ethanol and butyric acid through the fermentation of bacterial classification, microfiltration membrane separator 13 is introduced in logistics after the fermentation ends, wherein thalline returns the fermentor tank from fermentor tank 12 top inlet streams, and filtrate flows into the 3rd storage tank 14 and pumps into the second infiltration evaporation membrane separation apparatus 16 through the 3rd liquid pump 15.In the second infiltration evaporation membrane separation apparatus 16, the side that sees through at film is isolated butanols, acetone and butyric acid continuously, the three is cached in the second condenser 17 and enters rectifying tower 19 rectifying, and the acetic acid that does not see through flows back to the hydrolytic decomposition pot 1 from the second infiltration evaporation membrane separation apparatus 16; Sterling after the rectifying is collected in each self-corresponding product storage tank 20.
Claims (8)
1. one kind is rich in the method that the hemicellulose biomass ferment is produced butanols, acetone, butyric acid and furfural, comprises the steps:
Steps A, biomass pre-treatment: described biomass are pulverized;
Step B, hydrolysis: add acetic acid aqueous solution in described biomass, under 120～200 ℃ of hydrolysis temperatures, hydrolysis of hemicellulose is the solution that contains carbohydrate and furfural;
Step C, solid-liquid separation: the solid residue behind the described biomass by hydrolyzation is leached, obtain containing the filtrate of carbohydrate and furfural;
Step D separates furfural: make the described filtrate that contains carbohydrate and furfural through the infiltration evaporation membrane separation apparatus, isolate furfural;
Step e, fermentation: the hydrolyzed solution anaerobically fermenting under the effect of bacterial strain behind the separation furfural is converted into the fermented liquid that contains butanols, acetone, ethanol and butyric acid mixed solvent;
Step F, microfiltration membrane is separated: the fermented liquid of mycetome, carbohydrate and mixed solvent separates through microfiltration membrane, and concentration is back to fermentor tank;
Step G, infiltration evaporation separates: butanols, acetone and butyric acid see through infiltrating and vaporizing membrane and obtain separating concentrated in the described fermented liquid;
Step H, rectifying: with the mixing prod that infiltration evaporation is collected, refining butanols, acetone and the butyric acid sterling of obtaining.
2. described method according to claim 1 is characterized in that, the biomass pre-treatment in the steps A comprises: add the acetic acid aqueous solution pre-treatment after described biomass are pulverized.
3. described method according to claim 2 is characterized in that, acetic acid concentration is 2～10g/L in the acetic acid aqueous solution that adds among the described pre-treatment step A, and the solid-to-liquid ratio of pre-treatment step is 1:2～1:10.
4. described method according to claim 1 is characterized in that, also be included in the solid residue that leaches to add cellulase, and be carbohydrate with cellulose hydrolysis.
5. the described method of any one is characterized in that according to claim 1-4, and the acetic acid total concn of the acetic acid that adds among the step B and hydrolysis stripping is 11～20g/L, and solid-to-liquid ratio is 1:5～1:10 in the hydrolysing step, and hydrolysis time is 5～60 minutes.
6. the described method of any one is characterized in that according to claim 1-4, in step e, add inorganic salt and somatomedin in the substratum of fermentor tank, and described bacterial strain is clostridium acetobutylicum.
7. the described method of any one is characterized in that according to claim 1-4, the acetic acid that does not see through infiltrating and vaporizing membrane among the step G is returned cover be used for hydrolysing step B.
8. the described method of any one is characterized in that according to claim 1-4, and the described hemicellulose biomass that are rich in are sweet sorghum slag, sweet corn kernel slag, sweet corn bar slag, bagasse or corn cob.
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| CN102766020B (en) * | 2012-06-29 | 2014-11-05 | 北京化工大学 | Method for producing ethanol, acetone and butanol by permeabilization, vaporization, coupling and rectification of ABE (Acetone, Butanol and Ethanol) fermentation liquor |
| CN102757984B (en) * | 2012-07-02 | 2014-07-02 | 北京化工大学 | Production method of butyl alcohol by fermentation of biomass coupled with pervaporation separation |
| CN102787144B (en) * | 2012-07-27 | 2013-10-16 | 中国科学院过程工程研究所 | Process for producing acetone and butanol by coupling biomass fermentation and pervaporation membrane |
| CN102899358A (en) * | 2012-09-03 | 2013-01-30 | Acs农化系统有限公司 | Volatile organic product preparation method |
| CN103254158B (en) * | 2013-05-21 | 2015-07-22 | 北京化工大学 | Method and device for producing furfural by using biomass hydrolysis coupling pervaporation separation technology |
| CN103936575B (en) * | 2013-12-30 | 2016-05-18 | 浙江工业大学 | A kind of method that obtains acetone from living beings one-step method |
| CN103772144B (en) * | 2014-01-27 | 2016-08-17 | 南京工业大学 | A kind of method utilizing osmotic gasification-rectification integrated separation acetone-butanol alcohol fermentation liquid |
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| CN101696429A (en) * | 2009-09-21 | 2010-04-21 | 北京化工大学 | Method for producing butanol by hydrolyzing and fermenting waste crops rich in hemicellulose |
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