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CN1970777B - Process for preparing ethanol by using dry straw of sweet corn or sweet sorghum as raw material - Google Patents

Process for preparing ethanol by using dry straw of sweet corn or sweet sorghum as raw material Download PDF

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Publication number
CN1970777B
CN1970777B CN200610134397A CN200610134397A CN1970777B CN 1970777 B CN1970777 B CN 1970777B CN 200610134397 A CN200610134397 A CN 200610134397A CN 200610134397 A CN200610134397 A CN 200610134397A CN 1970777 B CN1970777 B CN 1970777B
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China
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sweet
straw
dry
corn
sorghum
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Expired - Fee Related
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CN200610134397A
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Chinese (zh)
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CN1970777A (en
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杨立国
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Priority to PCT/CN2007/001990 priority patent/WO2008064547A1/en
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    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P7/00—Preparation of oxygen-containing organic compounds
    • C12P7/02—Preparation of oxygen-containing organic compounds containing a hydroxy group
    • C12P7/04—Preparation of oxygen-containing organic compounds containing a hydroxy group acyclic
    • C12P7/06—Ethanol, i.e. non-beverage
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P7/00—Preparation of oxygen-containing organic compounds
    • C12P7/02—Preparation of oxygen-containing organic compounds containing a hydroxy group
    • C12P7/04—Preparation of oxygen-containing organic compounds containing a hydroxy group acyclic
    • C12P7/06—Ethanol, i.e. non-beverage
    • C12P7/08—Ethanol, i.e. non-beverage produced as by-product or from waste or cellulosic material substrate
    • C12P7/10—Ethanol, i.e. non-beverage produced as by-product or from waste or cellulosic material substrate substrate containing cellulosic material
    • 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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  • Organic Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Zoology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Microbiology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Biotechnology (AREA)
  • Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Abstract

The invention discloses a making technique of alcohol based on sweet-stem maize or sweet-sorghum dried straw as raw material, which comprises the following steps: collecting and drying the straw of sweet-stem maize or sweet-sorghum; grinding; immersing; condensing to obtain dense condensate; fermenting to obtain fermented liquid; distilling the fermented liquid to obtain alcohol.

Description

Dry straw with sweet corn or sweet sorghum is the technology of raw material ethanol production
Technical field
The present invention relates to a kind of alcoholic acid reparation technology, relating in particular to a kind of dry straw with reproducible sweet corn or sweet sorghum is the technology of raw material ethanol production.
Background technology
Serious day by day along with the exhausted day by day and environmental pollution of fossil energy utilizes energy crop production biological liquid fuel to be subjected to the great attention of countries in the world.The experience of country such as the U.S., Brazil, European Union and international organization's development biomass energy shows, with sugarcane, cassava, sweet sorghum and corn kernel etc. is the raw material production fuel alcohol, for the energy resource system of setting up Sustainable development, promote the improvement of The development in society and economy and ecotope all to be significant.Corn and sweet sorghum are short day C 4Plant has very high photosynthetic efficiency, and energy for growth is strong especially, and the title of " high energy crop " is arranged.Test according to the U.S. (Knowles, Don, 1984) shows, the alcohol output in per hectare sweet sorghum straw every year reaches 6106L, and be known as sun power the sugarcane of effective convertor have only 4680L.The test in Institute of Botany, Chinese Academy of Sciences Botanical gardens shows that also the alcohol output per hectare of sweet sorghum can reach 6000L, and bright biomass can reach 160t/hm 2Yet, do not see the report of using sweet corn stalk ethanol production both at home and abroad so far.Recently, Liaoning Province Academy of Agricultural Sciences develop first in the world stem stalk sugar degree be corn grain more than 15% can dual-purpose type cross-fertilize seed, provide reliable raw material to guarantee for utilizing the sweet stalk of crop to produce ethanol in a large number.But the method for using the sweet stalk ethanol production of crop is at present all fermented with sweet bar juice and is finished, and is subjected to the serious restriction of conditions such as the fresh-keeping and sweet juice storage of bright stalk and processing season.The present invention utilizes the dry straw of sweet corn and sweet sorghum to prepare ethanol, has solved bright in the past stalk and has produced the difficult problem that ethanol runs into.
Summary of the invention
The present invention be exactly a kind of dry straw that provides in order to solve the problems of the technologies described above with sweet corn or sweet sorghum be the technology of raw material ethanol production, purpose is to solve to adopt in the past that bright stalk ethanol production straw is extremely difficult deposits and store, produces the problem that is subjected to time and season limit.
For reaching above-mentioned purpose, the present invention is achieved in that the dry straw with sweet corn or sweet sorghum is the technology of raw material ethanol production, learn from else's experience to collect and dry again or air-dry sweet corn or the dry straw of sweet sorghum are pulverized, straw powder after the pulverizing through lixiviate, concentrate and to obtain concentrated vat liquor, concentrate vat liquor through ferment mash, mash makes ethanol through distillation.
The dry straw of described sweet corn or sweet sorghum is that water content is lower than 16% dry straw.
Described lixiviate step is: get stalk powder and add 6-15 water doubly and stir, stirred once every 0.5-3 hour, at room temperature placed 15-35 hour vat liquor.
Described concentrating is to utilize distillation under vacuum that vat liquor is condensed into the concentrated vat liquor of soluble sugar concentration for 20-40%.
Described zymotechnique step is: get concentrated vat liquor, add quality for concentrating vat liquor 0.08-0.2%K 2HPO 4, 0.15-0.25% (NH 4) 2SO 4And 0.025-0.075%MgSO 4Nutritive salt and mixed yeast get mash in fermentation cylinder for fermentation.
Described distilation steps is: behind the mash process simple distillation and rectifying of gained, obtain highly purified ethanol.
Described collection step is: after the ripe results of corn and sorghum seed, collect the stem stalk and be bundled into wisp.
Described dry or air-dry step is: rotten for preventing the stem stalk, the straw bundle that ties is one group with the 10-20 bundle stands up on field or vacant lot, make that moisture evaporates as early as possible in the stalk.
The dry straw of described sweet corn or sweet sorghum is sweet corn cross-fertilize seed or sweet sorghum cross-fertilize seed dry straw.
Advantage of the present invention and beneficial effect are as follows:
Advantage of the present invention: raw materials used is the dry straw of sweet corn or sweet sorghum, and sweet stem straw is very easily deposited and stored, and processing ethanol and be not subjected to effects limit such as time and season at any time; With sweet stem straw is that the production operation of raw material ethanol production is relatively simple.
Beneficial effect of the present invention: the ethanol quality that sweet corn and sweet sorghum dry straw are produced is good, and its density is 789g/ml, and boiling point is 78.31 ℃, can burn, and spontaneous ignition temperature is 558 ℃, the heat that the perfect combustion of 1kg ethanol can be emitted 7000-7100Kca.The ethanol that adopts preparation method of the present invention to produce can be widely used in also can be used as uses such as fuel, sterilizing agent and food-drink in the industries such as the energy, industry, medical treatment and food.
Embodiment
Below embodiments of the invention are described, but protection scope of the present invention is not limit by embodiment.
Embodiment 1:
Collect respectively sweet corn the Liao Dynasty behind the grain harvest can No. 2 and sweet sorghum the Liao Dynasty can 101 stalk, and be bundled into wisp, corn 15-20 root is an a bundle, Chinese sorghum 20-30 root is an a bundle, makes that moisture evaporates as early as possible in the stalk; Divide heap to stand and pile up on field or vacant lot, all every 15-30 bundle of corn and Chinese sorghum is a pile; After seasoning 1-6 month, sweet corn or sweet sorghum stalk become water content and are lower than 16% dry straw; Sweet corn or the dried straw of sweet sorghum is broken respectively, pulverize thin more well more; Get each 50 kilograms of ethanol production of corn or broomcorn straw powder, following corn or broomcorn straw powder processing alcoholic acid technology are identical; Get the water that corn stalk powder adds 500-750kg, at room temperature soaked about 24 hours, every about 2 hours, stir once; Filter vat liquor then; With distillation under vacuum filtered liquid being concentrated into sugar degree is 30% concentrated extracting solution; In concentrating extracting solution, add quality for concentrating vat liquor 0.08%K 2HPO 4, 0.15-0.25% (NH 4) 2SO 4And 0.025-0.075%MgSO 4Nutritive salt and mixed yeast get mash in fermentation cylinder for fermentation; After mash process simple distillation and the rectifying, obtain highly purified ethanol.Corn the Liao Dynasty can No. 2 50 kilograms of straw powder produce 6.92L ethanol, and 50 kilograms of straw powder of Chinese sorghum the Liao Dynasty energy 101 have been produced 7.16L ethanol.
The alcohol product quality standard that adopts aforesaid method to make is:
Ethanol (CH by sweet corn or the production of sweet sorghum dry straw 3CH 2OH) be the water white inclusion-free liquid of the special pure fragrance of tool, volatile, water soluble.Its density is 789g/ml, and boiling point is 78.31 ℃, can burn, and spontaneous ignition temperature is 558 ℃, the heat that the perfect combustion of 1kg ethanol can be emitted 7000-7100Kca.
Embodiment 2: collect sweet corn behind the grain harvest and the stalk of sweet sorghum respectively, and be bundled into wisp, corn 15-20 root is an a bundle, and Chinese sorghum 20-30 root is an a bundle, makes that moisture evaporates as early as possible in the stalk; Divide heap to stand and pile up on field or vacant lot, all every 15-30 bundle of corn and Chinese sorghum is a pile; After seasoning 1-6 month, make sweet corn or sweet sorghum stalk water content be lower than 16%; Sweet corn or sweet sorghum straw is broken respectively, pulverize thin more well more; Get each 50 kilograms of ethanol production of corn or broomcorn straw powder, following sweet corn or sweet sorghum stalk powder processing alcoholic acid technology are identical; Get the water that sweet sorghum stalk powder adds 300kg, and soak under the room temperature about 15-35 hour, every about 0.5-3 hour, stir once; Filter vat liquor then; With distillation under vacuum filtered liquid is concentrated into the concentrated extracting solution that sugar degree is 20-40%; In concentrating extracting solution, add quality for concentrating extracting solution 0.08%K 2HPO 4, 0.150% (NH 4) 2SO 4And 0.025%MgSO 4And mixed yeast in immobilized yeast fluid-bed reactor, ferment mash; After mash process simple distillation and the rectifying, obtain highly purified ethanol.
Embodiment 3: collect sweet corn cross-fertilize seed behind the grain harvest or the stalk of sweet sorghum cross-fertilize seed respectively, and be bundled into wisp, corn 15-20 root is an a bundle, and Chinese sorghum 20-30 root is an a bundle, makes that moisture evaporates as early as possible in the stalk; Divide heap to stand and pile up on field or vacant lot, all every 15-30 bundle of corn and Chinese sorghum is a pile; After seasoning 1-6 month, make the water content in sweet corn cross-fertilize seed or the sweet sorghum cross-fertilize seed stalk be lower than 16%; Sweet corn or sweet sorghum straw is broken respectively, pulverize thin more well more; Get each 50 kilograms of ethanol production of corn or broomcorn straw powder, following sweet corn or sweet sorghum stalk powder processing alcoholic acid technology are identical; Get the water that sweet sorghum stalk powder adds 750kg, and soak under the room temperature about 15-35 hour, every about 0.5-3 hour, stir once; Filter vat liquor then; With distillation under vacuum filtered liquid is concentrated into the concentrated extracting solution that sugar degree is 20-40%; In concentrating extracting solution, add quality for concentrating extracting solution 0.08-0.2%K 2HPO 4, 0.250% (NH 4) 2SO 4And 0.075%MgSO 4And mixed yeast gets mash in fermentation cylinder for fermentation; After mash process simple distillation and the rectifying, obtain highly purified ethanol.

Claims (5)

1. the dry straw with sweet corn or sweet sorghum is the method for raw material ethanol production, learn from else's experience to collect and dry again or air-dry sweet corn or the dry straw of sweet sorghum are pulverized, straw powder after the pulverizing through lixiviate, utilize distillation under vacuum that vat liquor is condensed into the concentrated vat liquor of soluble sugar concentration for 20-40%, concentrate vat liquor through ferment mash, mash makes ethanol through distillation; The dry straw of described sweet corn or sweet sorghum is that water content is lower than 16% dry straw; Described lixiviate step is: get stalk powder and add 6-15 water doubly and stir, stirred once every 0.5-3 hour, at room temperature placed 15-35 hour vat liquor; Described zymotechnique step is: get concentrated vat liquor, add quality for concentrating vat liquor 0.08-0.2%K 2HPO 4, 0.15-0.25% (NH 4) 2SO 4And 0.025-0.075%MgSO 4Nutritive salt and mixed yeast get mash in fermentation cylinder for fermentation.
2. the dry straw with sweet corn or sweet sorghum according to claim 1 is the method for raw material ethanol production, it is characterized in that described distilation steps is: behind the mash process simple distillation and rectifying of gained, obtain highly purified ethanol.
3. the dry straw with sweet corn or sweet sorghum according to claim 1 is the method for raw material ethanol production, it is characterized in that described collection step is: after the ripe results of corn and sorghum seed, collect the stem stalk and be bundled into wisp.
4. the dry straw with sweet corn or sweet sorghum according to claim 1 is the method for raw material ethanol production, it is characterized in that described dry or air-dry step is: rotten for preventing the stem stalk, the straw bundle that ties is one group with the 10-20 bundle stands up on field or vacant lot, the interior moisture of stalk is evaporated as early as possible.
5. the dry straw with sweet corn or sweet sorghum according to claim 1 is the method for raw material ethanol production, and the dry straw that it is characterized in that described sweet corn or sweet sorghum is sweet corn cross-fertilize seed or sweet sorghum cross-fertilize seed dry straw.
CN200610134397A 2006-11-28 2006-11-28 Process for preparing ethanol by using dry straw of sweet corn or sweet sorghum as raw material Expired - Fee Related CN1970777B (en)

Priority Applications (2)

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CN200610134397A CN1970777B (en) 2006-11-28 2006-11-28 Process for preparing ethanol by using dry straw of sweet corn or sweet sorghum as raw material
PCT/CN2007/001990 WO2008064547A1 (en) 2006-11-28 2007-06-25 The method of producing ethanol from dried sweet stem corn or sweet sorghum stalks

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CN200610134397A CN1970777B (en) 2006-11-28 2006-11-28 Process for preparing ethanol by using dry straw of sweet corn or sweet sorghum as raw material

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CN1970777B true CN1970777B (en) 2010-05-12

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1970777B (en) * 2006-11-28 2010-05-12 杨立国 Process for preparing ethanol by using dry straw of sweet corn or sweet sorghum as raw material
CN101307334B (en) * 2008-07-16 2012-06-06 张永北 Process for producing fuel ethanol by stalk beating method
CN101914577A (en) * 2010-06-29 2010-12-15 辽宁省能源研究所 Method for swelling pretreatment of crop straws by combining biological enzymolysis
CN101886091B (en) * 2010-07-05 2013-01-02 中兴能源(内蒙古)有限公司 Method for producing ethanol by fermenting sweet sorghum juice through yeast refluxing method
CN101875949B (en) * 2010-07-05 2012-06-27 中兴能源(内蒙古)有限公司 Method for producing ethanol fuel by using sweet sorghum stalks
CN102277299B (en) * 2011-06-01 2013-08-21 甘肃农业大学 Preparation method of microbial fermentation medium

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1425317A (en) * 2003-01-20 2003-06-25 丁友昉 Multiple microorganism straw fermented fodder and leaven and its preparing method
CN1511954A (en) * 2002-12-27 2004-07-14 徐道清 Process for producing alcohol from sweet sorghum stalk

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1511954A (en) * 1923-08-13 1924-10-14 Elliott Jacob James Milk-bottle holder
US4560659A (en) * 1981-06-26 1985-12-24 Asturias Carlos E R Ethanol production from fermentation of sugar cane
YU25697A (en) * 1997-06-18 1999-07-28 Dušan Ćirić Process of obtaining ethyl aclohol from cellulose
CN1970777B (en) * 2006-11-28 2010-05-12 杨立国 Process for preparing ethanol by using dry straw of sweet corn or sweet sorghum as raw material

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1511954A (en) * 2002-12-27 2004-07-14 徐道清 Process for producing alcohol from sweet sorghum stalk
CN1425317A (en) * 2003-01-20 2003-06-25 丁友昉 Multiple microorganism straw fermented fodder and leaven and its preparing method

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