CN101613723A - Utilize the method for the discarded plant production alcohol fuel of cellulose - Google Patents
Utilize the method for the discarded plant production alcohol fuel of cellulose Download PDFInfo
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- CN101613723A CN101613723A CN200910108998A CN200910108998A CN101613723A CN 101613723 A CN101613723 A CN 101613723A CN 200910108998 A CN200910108998 A CN 200910108998A CN 200910108998 A CN200910108998 A CN 200910108998A CN 101613723 A CN101613723 A CN 101613723A
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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Abstract
The invention provides the method for the discarded plant production alcohol fuel that utilizes cellulose, a kind of method is: discarded plant is cleaned grind, add dilute sulphuric acid, make hydrolysis of hemicellulose, filter, add lime in the filtrate again, remove precipitation; Recrement carries out delignification to be handled, and adds sulfuric acid, and heating makes cellulose hydrolysis, and being diluted to the sulfuric acid concentration expressed in percentage by weight is about 30-40%, carries out sulfuric acid and reclaims, and to containing sour liquid glucose reheat, hydrolysis adds the calcium oxide neutralization, and removes calcium sulfate.Another kind method is: discarded plant is cleaned grind, add discarded dilute sulphuric acid, make hydrolysis of hemicellulose, filter, add lime in the filtrate again, remove precipitation; Recrement adds the discarded vitriol oil, heating, and cooling, dilution, reheat, hydrolysis adds the calcium oxide neutralization, and removes calcium sulfate, and the aforesaid method gained is added yeast respectively ferment, distillation, dehydration obtains the alcohol fuel finished product.Its cost reduces greatly, and technology is simple, conveniently applies on a large scale.
Description
[technical field]
The present invention relates to renewable resource and utilize the field again, relate to the method for the discarded plant production alcohol fuel that utilizes various cellulose more specifically.
[background technology]
Because gas price is surging, searching can be produced cheap alcohol fuel (alcohol) and be come progressively that instead of gasoline becomes the task of top priority.The main raw material of the alcohol fuel of China's production at present is corn and cassava, technology is also quite ripe, but strive grain with the people, it is unallowed influencing the people's livelihood, and production cost is also very high, and therefore developing the alcohol fuel best bet is to utilize the discarded renewable resource of various cellulose such as culled wood, straw, wheat straw, corn stalk to do raw material.Reduce material cost on the one hand greatly, resource can be exhausted unlike oil on the other hand.
The chemical ingredients and the content of corn stalk are respectively: cellulose comprises 35-40%, and hemicellulose accounts for 40-50%, and xylogen accounts for 17.5%, and the chemical ingredients and the content of timber are respectively: cellulose comprises 40-50%, hemicellulose accounts for 20-35%, and xylogen accounts for 20-30%.Hemicellulose in the illustrative material and Mierocrystalline cellulose sum reach more than the 60-75%, and Mierocrystalline cellulose is that many β-D-Glucopyranose monomer is with β-1, the polysaccharide that 4 glycosidic links couple together, mean polymerisation degree reaches 7000-10000, hemicellulose mainly is made up of 90% wood sugar and a small amount of pectinose, semi-lactosi, seminose, under the effect of catalyzer, after connecting key destruction, just become the glucose and the wood sugar that can be fermented into alcohol.With suitable yeast, glucose and wood sugar just can ferment becomes alcohol.So selection is low-cost, the catalyzer and the catalysis process of the connecting key that simply can rupture, and has just become manufacturing alcoholic acid key.
From various data introductions, all departments are in the method for test, trial-production (because of suitability for industrialized production is not arranged) at present, all be to obtain the very low wood sugar of concentration with the dilute sulphuric acid hydrolyzed hemicellulose earlier, with adding the plain enzyme of special fibre in the recrement of cellulose and xylogen, come hydrocellulose again with this.But needing very exacting terms with the enzymatic hydrolysis Mierocrystalline cellulose under the normal condition at present, cost is also very high.Introduce in " research of cellulosic ethanol and development trend " literary composition of delivering on June 15th, 2008: one ton of cellulosic ethanol of current production needs zymin cost 2000-2600 unit, and cost is very high.
Another cellulolytic chemical process also is classic methods, does the catalyzer hydrocellulose with the vitriol oil exactly, and this method is simple, technology is reliable.But three difficult points are arranged: one is that volume of raw material is bigger, needs more vitriol oil dipping, and the bulk density of general sawdust is 6, and the bulk density of wheat straw reaches 12, and it is quite big to flood these raw-material sulfuric acid volumes; The 2nd, glucose is close with the vitriolic molecular weight, can't reclaim with the ion-exchange membrane of reclaim(ed) sulfuric acid; The 3rd, because the xylogen in the material adsorbs a large amount of hydrolyzed solutions and sulfuric acid, cause very big waste, therefore the cellulolytic method of this vitriol oil can't be produced because the vitriolic consumption is big.
[summary of the invention]
The technical problem to be solved in the present invention is: provide cost very low, technology is simple, utilizes the method for the discarded plant production alcohol fuel (alcohol) of various cellulose.
For addressing the above problem, the invention provides a kind of production method, its concrete steps are:
1) discarded plant with cellulose cleans the particle that is ground to less than 1mm;
2) be that 3% dilute sulphuric acid adds in the material after grinding with concentration expressed in percentage by weight, make its hydrolysis, to cover starting material be principle to the sulfuric acid consumption to flood, reaction conditions is 100-110 ℃, 1-1.5 hour, filters recrement and filtrate are separated, recrement flushing with clean water, washing fluid are incorporated in the filtrate;
3) lime is added in the above-mentioned filtrate, make it form the calcium sulfate precipitation after-filtration and remove precipitation, the add-on of lime is standard so that the pH value of solution equals 7;
4) to 2) in recrement carry out delignification and handle;
5) concentration expressed in percentage by weight 20-30% sulfuric acid is added gained in the step 4), heat 100-110 ℃, until cellulose dissolution and hydrolysis;
6) hydrolyzed solution of thin up step 5), making its sulfuric acid concentration expressed in percentage by weight is about 30%-40%;
7) utilize diffusion dialysis device reclaim(ed) sulfuric acid;
8) liquid glucose of step 7) remainder heats once more and carries out posthydrolysis, and the posthydrolysis condition is 110 ℃, 60 minutes;
9) add in the calcium oxide and posthydrolysis liquid to neutral and remove by filter calcium sulfate;
10) adding yeast respectively in step 9) gained liquid glucose and the step 3) gained filtrate ferments;
11) step 10) gained fermented liquid is distilled, dehydration obtains the alcohol fuel finished product.
Wherein the delignified method of step 4) can for: get 0.8% the biology that accounts for recrement weight and urge and separate that agent, 0.2% lignin are clean, sodium hydroxide or the hydrogen peroxide of 3-4%, and use the water identical to mix with recrement weight, said mixture is added in the described recrement, mix, heat then 80 ℃ 2 hours, be incubated 6-7 hour.
Wherein the delignified method of step 4) can also for: get 0.8% biological cold the urging that accounts for recrement weight and separate that agent, 0.2% lignin are clean, sodium hydroxide or the hydrogen peroxide of 3-4%, and use the water identical to mix with recrement weight, said mixture is added in the described recrement, mix, normal temperature was placed 24 hours down.
To be that culled wood, straw, wheat straw, corn stalk etc. are various contain cellulosic discarded plant to the discarded renewable resource of cellulose of the present invention, widened the starting material source greatly, makes starting material cheap and enrich.
The starting material abrasive grains is thin more among the present invention, and then bulk density is more little, and the sulfuric acid amount that needs is also few more, otherwise the starting material abrasive grains is thick more, and then bulk density is big more, and the sulfuric acid amount that needs is also many more.
Among the present invention with the sulfuric acid of lower concentration, can under the constant condition of sulfuric acid content, strengthen the several times volume and flood raw material, thereby hydrolyzed hemicellulose is a wood sugar.In the heat-processed, owing to continuous minimizing of the glycosyl polymerization degree of raw material makes the raw material volume-diminished, required vitriolic quantity has also just tailed off, and is equivalent to reduce the sulfuric acid consumption.In addition, because moisture evaporation, sulfuric acid constantly concentrates until reaching cellulolytic concentration, and makes cellulose hydrolysis in heat-processed.
Remove among the present invention that gained is a Mierocrystalline cellulose behind the xylogen, add 20-30% sulfuric acid in Mierocrystalline cellulose, heat 100-110 ℃, in the heat-processed, the cellulosic glycosyl polymerization degree reduces gradually, and sulfuric acid concentration improves gradually, until cellulose dissolution and hydrolysis.
Method among the present invention comprises and removes xylogen, has solved adsorption of hydrolyzation liquid and vitriolic problem; Adding reagent can be free of contamination chemical reagent simultaneously, has reduced the pollution to environment.
Generate oligomeric polysaccharide behind the cellulose hydrolysis among the present invention, about thin up to 30% because the molecular weight ratio sulfuric acid molecule amount of polysaccharide is much bigger, thus sulfuric acid can with separation of polysaccharides, recyclable 90% sulfuric acid greatly reduces the pollution to environment; The diffusion dialysis device also can bear the sulfuric acid of this concentration in addition.
Sulphuric acid recovery device among the present invention is the diffusion dialysis device.
The sulfuric acid of separating in the inventive method can directly add in the starting material and is hydrolyzed, and recycles; When containing the sulfuric acid of 8-10% in the oligomeric polysaccharide that comes out to be separated, can directly carry out posthydrolysis, generate glucose.
Being wood sugar with the hemicellulose in the dilute acid hydrolysis starting material among the present invention, is glucose with the Mierocrystalline cellulose in the concentrated acid hydrolysis starting material, and the polymerization degree of hemicellulose is lower, is degraded into monose relatively easily.The hydrolysis mechanism of the two can be represented simply with following equation:
(C
6H
10O
5)n+nH
2O→nC
6H
12O
6
(C
5H
8O
4)
n+nH
2O→nC
5H
10O
5
The glucose of above-mentioned generation ferments under different zymic effects respectively with wood sugar, distillation, and dehydration obtains ethanol.Add active dry yeast as the former, tannin pipe capsule yeast is had a liking in latter's adding.
Cost of the present invention is low, can be presented as four aspects: the one, and the present invention can finish cellulosic Mashing process with simple acid-resistant reacting kettle and acidproof electricradiator, has reduced facility investment and has reduced production cost; Two sulfuric acid that are to use can reclaim about 90%, greatly reduce cost, the 3rd, the suitable small serial production of producing per year about the 3000-5000 ton of the present invention, town of bases fit establishes a factory, therefore there is not the problem of trucking costs substantially, saved the cost of transportation; The 4th, utilize the discarded renewable resource of various cellulose such as culled wood, straw, wheat straw, corn stalk to do raw material, when having realized utilization of waste material, also saved material cost.
For solving technical problem of the present invention, the method that the discarded plant that the present invention also provides another kind to utilize cellulose is produced alcohol fuel, it is specially:
1) discarded plant with cellulose cleans the particle that is ground to less than 1mm;
2) be that 3% discarded dilute sulphuric acid adds in the material after grinding with concentration expressed in percentage by weight, make its hydrolysis, to cover starting material be principle to the sulfuric acid consumption to flood, temperature of reaction is 100-110 ℃, 1-1.5 hour, filters recrement and filtrate are separated, recrement flushing with clean water, washing fluid are incorporated in the filtrate;
3) lime is added in the above-mentioned filtrate, make it form the calcium sulfate precipitation after-filtration and remove precipitation, the add-on of lime is standard so that the pH value of solution equals 7;
4) concentration expressed in percentage by weight is the 20-30% waste sulfate adds step 2) in the gained recrement, heat 100-110 ℃, until cellulose dissolution and hydrolysis, thin up to vitriolic concentration expressed in percentage by weight is 10% again;
5) posthydrolysis is carried out in heating once more, and the posthydrolysis condition is 110 ℃, 60 minutes;
6) add calcium oxide neutralizing hydrolysis liquid to neutral and remove by filter calcium sulfate;
7) adding yeast respectively in step 6) gained liquid glucose and the step 3) gained filtrate ferments;
8) step 7) gained fermented liquid is distilled, dehydration obtains the alcohol fuel finished product.
Step 2 wherein) used waste sulfate is that its concentration obtains by the mode of dissolving with the waste sulfate behind the active carbon purifying and in the step 4).
Wherein increase the step that sulfuric acid reclaims between step 4) and the step 5), be specially: the hydrolyzed solution of step 4), thin up sulfuric acid concentration are about 30%-40%, utilize diffusion dialysis device reclaim(ed) sulfuric acid.
For solving technical problem of the present invention, the method that the discarded plant that the present invention also provides another kind to utilize cellulose is produced alcohol fuel, it is specially:
1) discarded plant with cellulose cleans the particle that is ground to less than 1mm;
2) be that 3% discarded dilute sulphuric acid adds in the material after grinding with concentration expressed in percentage by weight, make its hydrolysis, to cover starting material be principle to the sulfuric acid consumption to flood, temperature of reaction is 100-110 ℃, 1-1.5 hour, filters recrement and filtrate are separated, recrement flushing with clean water, washing fluid are incorporated in the filtrate;
3) lime is added in the above-mentioned filtrate, make it form the calcium sulfate precipitation after-filtration and remove precipitation, the add-on of lime is standard so that the pH value of solution equals 7;
4) be that 75% waste sulfate adds step 2 with concentration expressed in percentage by weight) in the gained recrement, be heated to 110 ℃, become the pasty state colloidal state until dissolving, insulation is 1 hour more than 80 ℃, and thin up to sulfuric acid concentration expressed in percentage by weight is 10% again;
5) posthydrolysis is carried out in heating once more, and the posthydrolysis condition is 110 ℃, 60 minutes;
6) add calcium oxide neutralizing hydrolysis liquid to neutral and remove by filter calcium sulfate;
7) adding yeast respectively in step 6) gained liquid glucose and the step 3) gained filtrate ferments;
8) step 7) gained fermented liquid is distilled, dehydration obtains the ethanol finished product.
Step 2 wherein) used waste sulfate is that its concentration obtains by the mode of dissolving with the waste sulfate behind the active carbon purifying and in the step 4).
Wherein increase the step that sulfuric acid reclaims between step 4) and the step 5), be specially: the hydrolyzed solution of step 4), thin up to sulfuric acid concentration expressed in percentage by weight is about 30%-40%, utilizes diffusion dialysis device reclaim(ed) sulfuric acid.
The sulfuric acid that the present invention uses is depleted sulfuric acid, needs just can be used for the present invention by active carbon purifying after removing organic impurity.Waste sulfate is used for handling the waste of associated companies, and its available mode that dissolves is regulated vitriolic concentration, and need not adopt spissated mode.
The present invention uses waste sulfate, when having simplified production technique, cost reduces more, through comparing: use the plain cost of one ton of alcoholic acid diastatic fiber of Mashing process production to be lower than 1000 yuan, and the plain cost of one ton of alcoholic acid diastatic fiber of same Production by Enzymes is about 2000-2600 unit.It is mainly reflected in four aspects: 1, sulfur waste acid is to be used for handling the waste of associated companies, so only need trucking costs; 2, the available mode that dissolves is regulated sulfuric acid concentration, and does not need concentrated vitriol, and this has saved the sport expense in the cost; 3, general sulfuric acid manufacture method need remove xylogen, reduces xylogen absorption sulfuric acid, because the present invention's use is waste sulfate, so can save the step that removes xylogen, has reduced production link, makes production link simple, has reduced cost simultaneously again.
[embodiment]
The present invention is described in further detail below by specific embodiment.
Embodiment 1: sawdust is produced the alcoholic acid method
1,100g is through grinding the sawdust (bulk density is 6) that is milled down to less than 1mm, with concentration expressed in percentage by weight is that 3% sulfuric acid 600ml carries out preceding hydrolysis, 1 hour after-filtration of 100 ℃ of heating, and the monose that Pei Linfa detects in the filtrate is about 21g, recrement flushing with clean water, washing fluid are also incorporated in the above-mentioned filtrate.
2, lime is added in the above-mentioned filtrate, make it form calcium sulfate precipitation, refilter and remove precipitation, the add-on of lime is about 10.5g, so that the pH value of solution equals 7.
3, remove xylogen: get the sodium hydroxide 2.4g that accounts for recrement weight 3%, 0.8% biology is urged and is separated agent 0.6g, and the clean 0.2g of 0.2% lignin is with the water mixing of 79ml, and add in the described recrement, 80 ℃ of heating 2 hours, be incubated water cleaning after 8 hours, oven dry is weighed again, is 16g.
4, because the bulk density of sawdust is 6ml/g, the 100g sawdust will be used 600ml, and needs adding concentration expressed in percentage by weight is 30% sulfuric acid 600ml, is heated to 110 ℃, become solution until cellulose dissolution and hydrolysis, diluting hydrolyzed solution to sulfuric acid concentration expressed in percentage by weight after the cooling at low temperatures is 40%.
5, with 90% of the sulfuric acid amount of experiment diffusion dialysis device in the recyclable upward step, this sulfuric acid can be recycled.
6, remaining sulfuric acid 10% in the liquid glucose of separating continues heating, and 100 ℃, 60 minutes, carry out posthydrolysis, generate glucose, Pei Linfa surveys glucose 49g.
7, contain sour grapes sugar to neutral with calcium oxide neutralization, filter, gained supernatant liquor in remaining liquid glucose and the step 2 is the mash of fermenting alcohol.
8, ferment with generally sophisticated, the general glucose and the fermentation process of wood sugar respectively; Carry out the distillation and the dehydration of fermented liquid with sophisticated, general ethanol distillation device, can obtain finished product 25g.
Sawdust in the present embodiment can be a wheat straw, culled wood, straw, wheat straw, corn stalk.
Above-mentioned the Heating temperature in steps can also be 110 ℃.
The sodium hydroxide that adds in the step 3 also can be and accounts for 4% of recrement weight,
Hydrogen peroxide can replace sodium hydroxide in the step 3.
The sulfuric acid concentration expressed in percentage by weight that adds in the step 4 can also be 20% or 25%.
Can also be diluted to sulfuric acid concentration in the step 4 is 30% or 35%.
Embodiment 2: with the method for straw and waste sulfate production alcohol fuel
1, waste sulfate purifies with activated carbon filtration, to remove organic impurity.To obtain about weight percentage concentration be 3%, 75% sulfuric acid by adding the water mode of dissolving.
2,100g is thin to the straw (bulk density is 6) less than 1mm through grinding, and is that 3% sulfuric acid 600ml carries out preceding hydrolysis with concentration expressed in percentage by weight, 100 ℃ of heating 1 hour, and the wood sugar in the Pei Linfa detection filtrate is about 17g.Recrement flushing with clean water, washing fluid are also incorporated in the above-mentioned filtrate.
3, lime is added in the above-mentioned filtrate, make it form calcium sulfate precipitation, refilter and remove precipitation, so that the pH value of solution equals 7.
4, in step 2) recrement in concentration expressed in percentage by weight after add purifying be 75% vitriol oil 165g, be heated to 110 ℃, become the pasty state colloidal state until dissolving, insulation is 1 hour more than 80 ℃, adding water, to make the sulfuric acid concentration expressed in percentage by weight be 10%.
5, continue heating, 100 ℃, 60 minutes, carry out posthydrolysis, generate glucose, it is 18g that Pei Linfa surveys glucose.
6, contain sour grapes sugar to neutral with calcium oxide neutralization, filter, gained filtrate in remaining liquid glucose and the step 3) is the mash of fermenting alcohol.
7, ferment with generally sophisticated, the general glucose and the fermentation process of wood sugar respectively; Carry out the distillation and the dehydration of fermented liquid with sophisticated, general ethanol distillation device, can obtain finished product 17.5g.
Straw in the present embodiment can be a wheat straw, culled wood, sawdust, wheat straw, corn stalk.
Above-mentioned the Heating temperature in steps can also be 110 ℃.
Step 4 can be: in step 2) recrement in concentration expressed in percentage by weight after add purifying be 30% vitriol oil 412.5g or 20% vitriol oil 618.75g, be heated to 110 ℃, become the pasty state colloidal state until dissolving, insulation is 1 hour more than 80 ℃, and adding water, to make the sulfuric acid concentration expressed in percentage by weight be 10%.
Waste sulfate in the present embodiment also can reclaim.Be specially between step 4 and 5 increase with experiment diffusion dialysis device recyclable on vitriolic 90% in the step, this sulfuric acid can be recycled.
Claims (9)
1, a kind of method of utilizing the discarded plant production alcohol fuel of cellulose the steps include:
1) discarded plant with cellulose cleans the particle that is ground to less than 1mm;
2) be that 3% dilute sulphuric acid adds in the material after grinding with concentration expressed in percentage by weight, make its hydrolysis, to cover starting material be principle to the sulfuric acid consumption to flood, reaction conditions is 100-110 ℃, 1-1.5 hour, filters recrement and filtrate are separated, recrement flushing with clean water, washing fluid are incorporated in the filtrate;
3) lime is added in the above-mentioned filtrate, make it form the calcium sulfate precipitation after-filtration and remove precipitation, the add-on of lime is standard so that the pH value of solution equals 7;
4) to 2) in recrement carry out delignification and handle;
5) concentration expressed in percentage by weight 20-30% sulfuric acid is added gained in the step 4), heat 100-110 ℃, until cellulose dissolution and hydrolysis;
6) hydrolyzed solution of thin up step 5), making its sulfuric acid concentration expressed in percentage by weight is about 30%-40%;
7) utilize diffusion dialysis device reclaim(ed) sulfuric acid;
8) liquid glucose of step 7) remainder heats once more and carries out posthydrolysis, and the posthydrolysis condition is 110 ℃, 60 minutes;
9) add in the calcium oxide and posthydrolysis liquid to neutral and remove by filter calcium sulfate;
10) adding yeast respectively in step 9) gained liquid glucose and the step 3) gained filtrate ferments;
11) step 10) gained fermented liquid is distilled, dehydration obtains the alcohol fuel finished product.
2, produce the method for alcohol fuel according to the discarded plant that utilizes cellulose described in the claim 1, wherein the delignified method of step 4) is: get 0.8% the biology that accounts for recrement weight and urge and separate that agent, 0.2% lignin are clean, sodium hydroxide or the hydrogen peroxide of 3-4%, and use the water identical to mix with recrement weight, said mixture is added in the described recrement, mix, heat then 80 ℃ 2 hours, be incubated 6-7 hour.
3, produce the method for alcohol fuel according to the discarded plant that utilizes cellulose described in the claim 1, wherein the delignified method of step 4) is: get 0.8% biological cold the urging that accounts for recrement weight and separate that agent, 0.2% lignin are clean, sodium hydroxide or the hydrogen peroxide of 3-4%, and use the water identical to mix with recrement weight, said mixture is added in the described recrement, mix, normal temperature was placed 24 hours down.
4, a kind of method of utilizing the discarded plant production alcohol fuel of cellulose the steps include:
1) discarded plant with cellulose cleans the particle that is ground to less than 1mm;
2) be that 3% discarded dilute sulphuric acid adds in the material after grinding with concentration expressed in percentage by weight, make its hydrolysis, to cover starting material be principle to the sulfuric acid consumption to flood, temperature of reaction is 100-110 ℃, 1-1.5 hour, filters recrement and filtrate are separated, recrement flushing with clean water, washing fluid are incorporated in the filtrate;
3) lime is added in the above-mentioned filtrate, make it form the calcium sulfate precipitation after-filtration and remove precipitation, the add-on of lime is standard so that the pH value of solution equals 7;
4) concentration expressed in percentage by weight is the 20-30% waste sulfate adds step 2) in the gained recrement, heat 100-110 ℃, until cellulose dissolution and hydrolysis, thin up to vitriolic concentration expressed in percentage by weight is 10% again;
5) posthydrolysis is carried out in heating once more, and the posthydrolysis condition is 110 ℃, 60 minutes;
6) add calcium oxide neutralizing hydrolysis liquid to neutral and remove by filter calcium sulfate;
7) adding yeast respectively in step 6) gained liquid glucose and the step 3) gained filtrate ferments;
8) step 7) gained fermented liquid is distilled, dehydration obtains the alcohol fuel finished product.
5, produce the method for alcohol fuel according to the discarded plant that utilizes cellulose described in the claim 4, wherein step 2) and step 4) in used waste sulfate be that its concentration obtains by the mode of dissolving with the waste sulfate behind the active carbon purifying.
6, produce the method for alcohol fuel according to the discarded plant that utilizes cellulose described in the claim 4, wherein increase the step that sulfuric acid reclaims between step 4) and the step 5), be specially: the hydrolyzed solution of step 4), the thin up sulfuric acid concentration is about 30%-40%, utilizes diffusion dialysis device reclaim(ed) sulfuric acid.
7, a kind of method of utilizing the discarded plant production alcohol fuel of cellulose the steps include:
1) discarded plant with cellulose cleans the particle that is ground to less than 1mm;
2) be that 3% discarded dilute sulphuric acid adds in the material after grinding with concentration expressed in percentage by weight, make its hydrolysis, to cover starting material be principle to the sulfuric acid consumption to flood, temperature of reaction is 100-110 ℃, 1-1.5 hour, filters recrement and filtrate are separated, recrement flushing with clean water, washing fluid are incorporated in the filtrate;
3) lime is added in the above-mentioned filtrate, make it form the calcium sulfate precipitation after-filtration and remove precipitation, the add-on of lime is standard so that the pH value of solution equals 7;
4) be that 75% waste sulfate adds step 2 with concentration expressed in percentage by weight) in the gained recrement, be heated to 110 ℃, become the pasty state colloidal state until dissolving, insulation is 1 hour more than 80 ℃, and thin up to sulfuric acid concentration expressed in percentage by weight is 10% again.；
5) posthydrolysis is carried out in heating once more, and the posthydrolysis condition is 110 ℃, 60 minutes;
6) add calcium oxide neutralizing hydrolysis liquid to neutral and remove by filter calcium sulfate;
7) adding yeast respectively in step 6) gained liquid glucose and the step 3) gained filtrate ferments;
8) step 7) gained fermented liquid is distilled, dehydration obtains the ethanol finished product.
8, produce the method for alcohol fuel according to the discarded plant that utilizes cellulose described in the claim 7, wherein step 2) and step 4) in used waste sulfate be that its concentration obtains by the mode of dissolving with the waste sulfate behind the active carbon purifying.
9, produce the method for alcohol fuel according to the discarded plant that utilizes cellulose described in the claim 7, wherein increase the step that sulfuric acid reclaims between step 4) and the step 5), be specially: the hydrolyzed solution of step 4), thin up to sulfuric acid concentration expressed in percentage by weight is about 30%-40%, utilizes diffusion dialysis device reclaim(ed) sulfuric acid.
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| CN102465152A (en) * | 2010-11-05 | 2012-05-23 | 刘贵彬 | Cellulose ethanol internal circulation production method without pretreatment |
| CN103221104A (en) * | 2010-05-07 | 2013-07-24 | 索尔雷能源有限公司 | Biomasses for the production of alternative petrochemical feedstock |
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| CN103221104A (en) * | 2010-05-07 | 2013-07-24 | 索尔雷能源有限公司 | Biomasses for the production of alternative petrochemical feedstock |
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| CN102465152A (en) * | 2010-11-05 | 2012-05-23 | 刘贵彬 | Cellulose ethanol internal circulation production method without pretreatment |
| CN102465152B (en) * | 2010-11-05 | 2015-06-17 | 刘贵彬 | Cellulose ethanol internal circulation production method without pretreatment |
| CN102206716A (en) * | 2011-03-29 | 2011-10-05 | 张浪 | Hydrolyzing method of cellulose and hemicellulose in waste plant |
| CN102206716B (en) * | 2011-03-29 | 2013-01-30 | 张浪 | Hydrolyzing method of cellulose and hemicellulose in waste plant |
| CN103436568A (en) * | 2013-07-31 | 2013-12-11 | 中国科学院青岛生物能源与过程研究所 | Algae residue degradation liquid, and preparation method and application of algae residue degradation liquid |
| CN107988438A (en) * | 2017-12-25 | 2018-05-04 | 广州市楹晟生物科技有限公司 | A kind of liquid glucose poison-removing method |
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