CN105441490A - Production method for preparing medical ethyl alcohol through corn straw - Google Patents
Production method for preparing medical ethyl alcohol through corn straw Download PDFInfo
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- CN105441490A CN105441490A CN201510882166.5A CN201510882166A CN105441490A CN 105441490 A CN105441490 A CN 105441490A CN 201510882166 A CN201510882166 A CN 201510882166A CN 105441490 A CN105441490 A CN 105441490A
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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 belongs to the field of medicine and chemical engineering, and particularly relates to a production method for preparing medical ethyl alcohol through corn straw. The production method comprises the steps that the corn straw is sliced up, smashed and extruded to an outlet, and the material temperature is 140 DEG C; water and inorganic acid are added, and the pH of the material is adjusted to be 3-4, the volume percent concentration ranges from 30% to 70%, then the material is stewed at the temperature of 120 DEG C to 150 DEG C, and filtering is carried out to obtain filtrate and filter residues; cellulase is added to the filter residues for solid fermentation, the temperature of solid fermentation ranges from 30 DEG C to 40 DEG C, time ranges from 4 days to 5 days, and solid fermentation products are obtained; the solid fermentation products are distilled at the heating environment temperature of 52 DEG C to 55 DEG C, and ethyl alcohol and solid waste residues are obtained; after ethyl alcohol and the filtrate obtained through solid fermentation are mixed with ethyl alcohol obtained through fermentation and distilling treatment, the mixture is sequentially subjected to second-level rectification and third-level rectification, the methyl alcohol removing, degerming and filtering procedures are carried out, and the medical ethyl alcohol is obtained. The method is simple, the material is cyclically produced, and cost and energy consumption are low.
Description
Technical field
The invention belongs to field of medicine and chemical technology, be specifically related to the production method that a kind of maize straw makes medicinal alcohol.
Background technology
At present, national maize sown area is up to 200,000,000 mu, and the annual maize straw producing 200,000,000 tons, except small part is utilized, major part directly immerses environment with forms such as accumulation, burnings, causes and greatly pollutes, and is also a kind of wasting of resources simultaneously.If be hydrolyzed after pre-treatment by maize straw, the Mierocrystalline cellulose contained by it and hemicellulose decomposable asymmetric choice net saccharogenesis, can be converted into ethanol through fermentation, total recovery can reach 10%, and heat conversion reaches more than 30%.Therefore, maize straw becomes the study hotspot of field of biological energy source in recent years.
Nowadays, by the technology of Maize Production ethanol, after general employing first makes food grade alcohol with corn, then obtain medicinal alcohol through deep processing, or coordinate other materials to make medicinal alcohol with corn, but rare the Research Literature with maize straw direct production medicinal alcohol and technology are recorded.Wherein, the patent No. be " technique for producing ethanol with corn stalk " of 200610114240.X disclose a kind of by maize straw through pulverizing, material all in one piece, add Angel Yeast, pit entry fermentation, distillation produce elementary ethanol, this invented technology is simple, it is easy to operate, but product is after repeatedly extracting, still do not reach pharmaceutical grade requirement, and waste reuse ratio is low, the risk of secondary pollution is had to exist.
For this reason, the present invention is in conjunction with medicinal alcohol production technology and maize straw deep process technology, and the preparation for medicinal alcohol provides a kind of new approaches.
Summary of the invention
The present invention, for solving the problems of the technologies described above, provides a kind of by the method for maize straw direct production medicinal alcohol, and this method is polluted little, and Matter Transfer utilization ratio is high.
Maize straw makes a production method for medicinal alcohol, comprises the following steps:
(1) after maize straw being carried out cut into slices, pulverizing, proceed in extrusion machine and carry out being squeezed to outlet mass temperatures for (140 ± 2) DEG C, add water, mineral acid carries out being adjusted to material pH is 3-4, concentration of volume percent is 30-70%, then being placed in temperature is boiling 20-50min under 120-150 DEG C of condition, filter, obtain filtrate and filter residue;
(2) in filter residue, add cellulase and yeast carries out solid state fermentation, the temperature of described solid state fermentation is 30-40 DEG C, and the time is 4-5 days, obtains solid fermentation thing;
(3) solid fermentation thing being placed in heating environment temperature is under 52-55 DEG C of condition after distillation, obtains ethanol and solid-state waste residue;
(4), after the ethanol mixing ethanol of step (3) gained and filtrate being processed gained through fermenting, distilling, successively after secondary, three grades of rectifying, then through separating methanol, Sterile Filtration operation, medicinal alcohol is obtained.
Described mineral acid is one of sulfuric acid or hydrochloric acid.
Described solid state fermentation, the addition proportioning of each material is: filter residue 1kg, cellulase 50-80u/g, yeast 3.8-4.5g/L.
The solid-state waste residue of described step (3) gained and filtrate, after the waste liquid mixing of fermentation, distillation process gained, after the saccharomycetic fermentative processing of multiparity protein, send into boiler workshop section.
Fermentation, the distillation for processing of described filtrate are: in filtrate, add ammoniacal liquor or bicarbonate of ammonia regulate pH to be after 3.8-4.5, add cellulase, after saccharifying enzyme, yeast carry out stirring fermentation 10-30h, carry out ferment at constant temperature 30-40h again, then being placed in heating environment temperature is under 52-55 DEG C of condition after distillation, obtains ethanol and waste liquid.
Described fermentation, the addition proportioning of each material is: filtrate 2kg, cellulase 20-40u/g, saccharifying enzyme 120-180u/g, yeast 4.5-5.5g/L.
Described stirring fermentation, its mixing speed is 120-150r/min.
Described ferment at constant temperature, its temperature is 30-34 DEG C.
The temperature of described two-stage rectification is 58-68 DEG C.
The temperature of described three grades of rectifying is 70-75 DEG C
Beneficial effect of the present invention
The present invention take maize straw as raw material, achieve the cycle production process of medicinal alcohol, by maize straw shear and extruding heat of friction reactive force under raise temperature of charge after spray, this moment the pressure of material reduce suddenly, rapid spatial expansion, cellulose crystals is destructurized, thus create favorable conditions for cellulosic enzymolysis processing, the production process in this stage is continuous, without the need to consuming steam, and has sterilising effect, reduce the impact of miscellaneous bacteria on fermentation, reduce the impurity in finished product; In conjunction with saccharification and synchronous method of fermenting, the saccharification capability of maize straw is promoted, coordinate the control of temperature, pH again, improve fermentation efficiency, again due to rich in proteins in Saccharification-Fermentation system, because this reducing the interpolation of nitrogen, further, improve the ultimate density of the rear ethanol of fermentation, decrease the cost of subsequent purification, coordinate distillation, distillation technology again, decrease the azeotrope that second alcohol and water is formed, further increase alcohol concn, pass through pricing, The present invention reduces production cost about 30%, steam saving about 25%.
Accompanying drawing explanation
Fig. 1 represents that maize straw makes the production scheme of medicinal alcohol.
Embodiment
Below in conjunction with concrete embodiment, further restriction is done to technical scheme of the present invention, but claimed scope is not only confined to done description.
Embodiment 1
(1) after 1.8kg maize straw being carried out cut into slices, pulverizing, proceed in extrusion machine that to carry out being squeezed to outlet mass temperatures be 140 DEG C, add water, analytical pure dilute sulphuric acid carries out being adjusted to material pH is 3.5, concentration of volume percent is 60%, then being placed in temperature is boiling 50min under 150 DEG C of conditions, filter, obtain filtrate and filter residue;
(2) filter residue process: add 65u/g cellulase by 1kg filter residue, the scalemic thereof material of access 4.0g/L yeast, carried out solid state fermentation, the temperature of described solid state fermentation is 32 DEG C, and the time is 4 days, obtains solid fermentation thing; Solid fermentation thing being placed in heating environment temperature is be distilled under 52 DEG C of conditions without after obvious alcohol smell generation, obtains ethanol and solid-state waste residue;
(3) filtrate process: regulate pH to be after 4.0 by adding ammoniacal liquor or bicarbonate of ammonia in 2kg filtrate, add 32u/g cellulase, 120u/g saccharifying enzyme, after the scalemic thereof material of access 4.8g/L yeast, after material being stirred under rotating speed is 130r/min condition fermentation 15h, being placed in temperature is again ferment at constant temperature 35h at 32 DEG C, then being placed in heating environment temperature is be distilled under 52 DEG C of conditions without after obvious alcohol smell generation, obtains ethanol and waste liquid;
(4) by after the mixing of the ethanol of the ethanol of step (2) gained and step (3) gained, be rectifying 20min under 66 DEG C of conditions prior to temperature, proceeding to temperature is again under 72 DEG C of conditions after rectifying 30min, then through separating methanol, Sterile Filtration operation, obtains medicinal alcohol.
Embodiment 2
(1) after 3kg maize straw being carried out cut into slices, pulverizing, proceed in extrusion machine that to carry out being squeezed to outlet mass temperatures be 138 DEG C, add water, analytical pure hydrochloric acid carries out being adjusted to material pH is 3.2, concentration of volume percent is 30%, then being placed in temperature is boiling 30min under 150 DEG C of conditions, filter, obtain filtrate and filter residue;
(2) filter residue process: add 70u/g cellulase by 1kg filter residue, the scalemic thereof material of access 4.3g/L yeast, carried out solid state fermentation, the temperature of described solid state fermentation is 40 DEG C, and the time is 5 days, obtains solid fermentation thing; Solid fermentation thing being placed in heating environment temperature is be distilled under 55 DEG C of conditions without after obvious alcohol smell generation, obtains ethanol and solid-state waste residue;
(3) filtrate process: regulate pH to be after 4.5 by adding ammoniacal liquor or bicarbonate of ammonia in 2kg filtrate, add 28u/g cellulase, 125u/g saccharifying enzyme, the scalemic thereof material of access 5.4g/L yeast, after material being stirred under rotating speed is 120r/min condition fermentation 28h, being placed in temperature is again ferment at constant temperature 38h at 33 DEG C, then being placed in heating environment temperature is be distilled under 55 DEG C of conditions without after obvious alcohol smell generation, obtains ethanol and waste liquid;
(4) by after the mixing of the ethanol of the ethanol of step (2) gained and step (3) gained, be rectifying 30min under 65 DEG C of conditions prior to temperature, proceeding to temperature is again under 74 DEG C of conditions after rectifying 8min, then through separating methanol, Sterile Filtration operation, obtains medicinal alcohol.
Embodiment 3
(1) after maize straw being carried out cut into slices, pulverizing, proceed in extrusion machine that to carry out being squeezed to outlet mass temperatures be 142 DEG C, add water, sulfuric acid that concentration is 50wt% carries out being adjusted to material pH is 4.0, concentration of volume percent is 50%, then being placed in temperature is boiling 20min under 140 DEG C of conditions, filter, obtain filtrate and filter residue;
(2) filter residue process: add 55u/g cellulase by 1kg filter residue, the scalemic thereof material of access 4.5g/L yeast, carried out solid state fermentation, the temperature of described solid state fermentation is 36 DEG C, and the time is 100h, obtains solid fermentation thing; Solid fermentation thing being placed in heating environment temperature is be distilled under 53 DEG C of conditions without after obvious alcohol smell generation, obtains ethanol and solid-state waste residue;
(3) filtrate process: regulate pH to be after 3.8 by adding ammoniacal liquor or bicarbonate of ammonia in 2kg filtrate, add 22u/g cellulase, 153u/g saccharifying enzyme, the scalemic thereof material of access 5.0g/L yeast, after material being stirred under rotating speed is 135r/min condition fermentation 24h, being placed in temperature is again ferment at constant temperature 36h at 30 DEG C, then being placed in heating environment temperature is be distilled under 53 DEG C of conditions without after obvious alcohol smell generation, obtains ethanol and waste liquid;
(4) by after the mixing of the ethanol of the ethanol of step (2) gained and step (3) gained, be rectifying 10min under 60 DEG C of conditions prior to temperature, proceeding to temperature is again under 73 DEG C of conditions after rectifying 10min, then through separating methanol, Sterile Filtration operation, obtains medicinal alcohol.
Embodiment 4
(1) after 2kg maize straw being carried out cut into slices, pulverizing, proceed in extrusion machine that to carry out being squeezed to outlet mass temperatures be 138 DEG C, add water, hydrochloric acid that concentration is 50wt% carries out being adjusted to material pH is 3.8, concentration of volume percent is 45%, then being placed in temperature is boiling 50min under 120 DEG C of conditions, filter, obtain filtrate and filter residue;
(2) filter residue process: add 80u/g cellulase by 1kg filter residue, the scalemic thereof material of access 4.0g/L yeast, carried out solid state fermentation, the temperature of described solid state fermentation is 33 DEG C, and the time is 98h, obtains solid fermentation thing; Solid fermentation thing being placed in heating environment temperature is be distilled under 54 DEG C of conditions without after obvious alcohol smell generation, obtains ethanol and solid-state waste residue;
(3) filtrate process: regulate pH to be after 3.8 by adding ammoniacal liquor or bicarbonate of ammonia in 2kg filtrate, add 38u/g cellulase, 178u/g saccharifying enzyme, the scalemic thereof material of access 4.5g/L yeast, after material being stirred under rotating speed is 130r/min condition fermentation 12h, being placed in temperature is again ferment at constant temperature 35h at 31 DEG C, then being placed in heating environment temperature is be distilled under 54 DEG C of conditions without after obvious alcohol smell generation, obtains ethanol and waste liquid;
(4) by after the mixing of the ethanol of the ethanol of step (2) gained and step (3) gained, be rectifying 15min under 68 DEG C of conditions prior to temperature, proceeding to temperature is again under 75 DEG C of conditions after rectifying 18min, then through separating methanol, Sterile Filtration operation, obtains medicinal alcohol.
Embodiment 5
(1) after 2.5kg maize straw being carried out cut into slices, pulverizing, proceed in extrusion machine that to carry out being squeezed to outlet mass temperatures be 140 DEG C, add water, sulfuric acid that concentration is 98wt% carries out being adjusted to material pH is 3.6, concentration of volume percent is 66%, then being placed in temperature is boiling 30min under 130 DEG C of conditions, filter, obtain filtrate and filter residue;
(2) filter residue process: add 60u/g cellulase by 1kg filter residue, the scalemic thereof material of access 4.7g/L yeast, carried out solid state fermentation, the temperature of described solid state fermentation is 40 DEG C, and the time is 100h, obtains solid fermentation thing; Solid fermentation thing being placed in heating environment temperature is be distilled under 55 DEG C of conditions without after obvious alcohol smell generation, obtains ethanol and solid-state waste residue;
(3) filtrate process: regulate pH to be after 4.3 by adding ammoniacal liquor or bicarbonate of ammonia in 2kg filtrate, add 26u/g cellulase, 150u/g saccharifying enzyme, the scalemic thereof material of access 5.2g/L yeast, after material being stirred under rotating speed is 120r/min condition fermentation 30h, being placed in temperature is again ferment at constant temperature 30h at 32 DEG C, then being placed in heating environment temperature is be distilled under 55 DEG C of conditions without after obvious alcohol smell generation, obtains ethanol and waste liquid;
(4) by after the mixing of the ethanol of the ethanol of step (2) gained and step (3) gained, be rectifying 12min under 58 DEG C of conditions prior to temperature, proceeding to temperature is again under 70 DEG C of conditions after rectifying 5min, then through separating methanol, Sterile Filtration operation, obtains medicinal alcohol.
Claims (8)
1. maize straw makes a production method for medicinal alcohol, it is characterized in that, comprises the following steps:
(1) after maize straw being carried out cut into slices, pulverizing, proceed in extrusion machine and carry out being squeezed to outlet mass temperatures for (140 ± 2) DEG C, add water, mineral acid carries out being adjusted to material pH is 3-4, concentration of volume percent is 30-70%, then being placed in temperature is boiling 20-50min under 120-150 DEG C of condition, filter, obtain filtrate and filter residue;
(2) in filter residue, add cellulase and yeast carries out solid state fermentation, the temperature of described solid state fermentation is 30-40 DEG C, and the time is 4-5 days, obtains solid fermentation thing;
(3) solid fermentation thing being placed in heating environment temperature is under 52-55 DEG C of condition after distillation, obtains ethanol and solid-state waste residue;
(4), after the ethanol mixing ethanol of step (3) gained and filtrate being processed gained through fermenting, distilling, successively after secondary, three grades of rectifying, then through separating methanol, Sterile Filtration operation, medicinal alcohol is obtained.
2. maize straw as claimed in claim 1 makes the production method of medicinal alcohol, and it is characterized in that, described solid state fermentation, the addition proportioning of each material is: filter residue 1kg, cellulase 50-80u/g, yeast 3.8-4.5g/L.
3. maize straw as claimed in claim 1 makes the production method of medicinal alcohol, it is characterized in that, fermentation, the distillation for processing of described filtrate are: in filtrate, add ammoniacal liquor or bicarbonate of ammonia regulate pH to be after 3.8-4.5, add cellulase, after saccharifying enzyme, yeast carry out stirring fermentation 10-30h, carry out ferment at constant temperature 30-40h again, then being placed in heating environment temperature is under 52-55 DEG C of condition after distillation, obtains ethanol and waste liquid.
4. maize straw as claimed in claim 3 makes the production method of medicinal alcohol, and it is characterized in that, described fermentation, the addition proportioning of each material is: filtrate 2kg, cellulase 20-40u/g, saccharifying enzyme 120-180u/g, yeast 4.5-5.5g/L.
5. maize straw as claimed in claim 3 makes the production method of medicinal alcohol, it is characterized in that, described stirring fermentation, its mixing speed is 120-150r/min.
6. maize straw as claimed in claim 3 makes the production method of medicinal alcohol, and it is characterized in that, described ferment at constant temperature, its temperature is 30-34 DEG C.
7. maize straw as claimed in claim 1 makes the production method of medicinal alcohol, and it is characterized in that, the temperature of described two-stage rectification is 58-68 DEG C.
8. maize straw as claimed in claim 1 makes the production method of medicinal alcohol, and it is characterized in that, the temperature of described three grades of rectifying is 70-75 DEG C.
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| CN201510882166.5A CN105441490A (en) | 2015-12-05 | 2015-12-05 | Production method for preparing medical ethyl alcohol through corn straw |
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| CN201510882166.5A CN105441490A (en) | 2015-12-05 | 2015-12-05 | Production method for preparing medical ethyl alcohol through corn straw |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108101645A (en) * | 2017-12-29 | 2018-06-01 | 中溶科技股份有限公司 | A kind of method using biogas residue production bio-feritlizer |
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| CN101186943A (en) * | 2006-11-17 | 2008-05-28 | 安徽丰原发酵技术工程研究有限公司 | Method for producing ethanol from crop straw |
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- 2015-12-05 CN CN201510882166.5A patent/CN105441490A/en active Pending
Patent Citations (4)
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| CN101037703A (en) * | 2006-03-17 | 2007-09-19 | 中国科学院过程工程研究所 | Hydrolysis and fermentation method for reinforcing straw cellulose |
| CN101186943A (en) * | 2006-11-17 | 2008-05-28 | 安徽丰原发酵技术工程研究有限公司 | Method for producing ethanol from crop straw |
| CN103814136A (en) * | 2011-09-21 | 2014-05-21 | 国际壳牌研究有限公司 | Process for pretreating a lignocellulosic material through dilute acid |
| CN104774876A (en) * | 2015-04-10 | 2015-07-15 | 山东龙力生物科技股份有限公司 | Method for comprehensive utilization of lignocellulosic biomasses |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108101645A (en) * | 2017-12-29 | 2018-06-01 | 中溶科技股份有限公司 | A kind of method using biogas residue production bio-feritlizer |
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