WO2008064547A1 - Procédé de production d'éthanol à partir de tiges séchées de maïs à tige sucrée ou de sorgho à sucre - Google Patents

Procédé de production d'éthanol à partir de tiges séchées de maïs à tige sucrée ou de sorgho à sucre Download PDF

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Publication number
WO2008064547A1
WO2008064547A1 PCT/CN2007/001990 CN2007001990W WO2008064547A1 WO 2008064547 A1 WO2008064547 A1 WO 2008064547A1 CN 2007001990 W CN2007001990 W CN 2007001990W WO 2008064547 A1 WO2008064547 A1 WO 2008064547A1
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WO
WIPO (PCT)
Prior art keywords
sweet
corn
ethanol
dry straw
sorghum
Prior art date
Application number
PCT/CN2007/001990
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English (en)
Chinese (zh)
Inventor
Liguo Yang
Original Assignee
Liguo Yang
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Liguo Yang filed Critical Liguo Yang
Publication of WO2008064547A1 publication Critical patent/WO2008064547A1/fr

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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

Definitions

  • the invention relates to a process for preparing ethanol, in particular to a process for preparing ethanol by using dry sweet corn stem or sweet sorghum dry straw as raw material.
  • the Liaoning Academy of Agricultural Sciences has developed a corn-energy dual-purpose hybrid with a sugar content of 15% or more in the international Jiaji, which provides a reliable raw material guarantee for the large-scale use of sweet straw to produce ethanol.
  • the current methods for preparing ethanol from crop sweet stalks are all done by fermenting sweet straw juice, which is severely limited by conditions such as fresh stalk preservation and sweet juice storage and processing season.
  • the invention utilizes sweet stem corn and sweet sorghum dry straw to prepare ethanol, and solves the problem encountered in the production of ethanol by fresh straw.
  • the present invention is a process for preparing ethanol by using sweet stem corn or sweet sorghum dry straw as a raw material for solving the above technical problems, and the object is to solve the problem that it is extremely difficult to store ethanol straw by using fresh straw.
  • the present invention is achieved by the following steps: preparing ethanol by using sweet stem corn or sweet sorghum dry straw as raw material, and smashing the sweet stem corn or sweet sorghum dry straw collected, dried or air-dried, The pulverized straw powder is leached and concentrated to obtain a concentrated leaching solution, and the concentrated leaching solution is fermented to obtain mash, and the mash is distilled to obtain ethanol.
  • the sweet stem corn or sweet sorghum dry straw is dry straw having a water content of less than 16%.
  • the leaching step is as follows: adding 6-15 times of water to the straw powder for stirring, stirring once every 0.5-3 hours, and leaving the extract liquid at room temperature for 15-35 hours.
  • the concentration is carried out by vacuum distillation to concentrate the extract into a concentrated extract having a soluble sugar concentration of 20-40%.
  • the fermentation process step is: taking the concentrated extract, adding the nutrient of the concentrated extract 0.08-0.2% K 2 HPO 4 , 0.15-0.25% (NH 4 ) 2 SO 4 and 0.025-0.075% MgSO 4
  • the salt and the mixed yeast are fermented in a fermenter to obtain a mash.
  • the distillation step is: after the obtained mash is subjected to crude distillation and fine boring, high-purity ethanol is obtained.
  • the collecting step is as follows: After the corn and sorghum seeds are matured, the stalks are collected and bundled into small bundles.
  • the drying or air drying step is as follows: In order to prevent the stalk from being deteriorated, the straw bundles are placed in a field or an open space in groups of 10-20 bundles, so that the moisture in the stalk is evaporated as soon as possible.
  • the sweet stem corn or sweet sorghum dry straw is a sweet stem corn hybrid or a sweet sorghum hybrid dry straw.
  • the invention has the advantages that the raw materials used are sweet stem corn or sweet sorghum dry straw, the sweet stem straw is easy to store and store, and the ethanol can be processed at any time without being restricted by time and season; It is relatively simple and easy to produce ethanol from the raw material.
  • sweet stem corn and sweet sorghum dry straw produce good quality of ethanol, the density is 7 8 9 g / ml, the boiling point is 7 8 . 3 1 ° C, can be burned, the self-ignition point is 5 5 8 ° C 5 1 kg ethanol Complete combustion can release 7 0 0 - 7 1 0 O Kca heat.
  • the ethanol obtained by the preparation method of the present invention can be widely used in energy, industrial, medical, food and other industries, and can also be used as a fuel, a disinfectant, a food and beverage, and the like.
  • the straw slag processed by the process can be further converted into ethanol by adding cellulase and hemicellulase.
  • Example 1 The embodiments of the present invention are described below, but the scope of the present invention is not limited by the embodiments.
  • Example 1
  • the straws of sweet stem corn Liaoneng 2 and sweet sorghum Liao Neng 101 after grain harvesting were collected and bundled into small bundles, 15-20 of corn were bundled, and 20-30 of sorghum were bundled.
  • the water is evaporated as soon as possible; the pile standing code is placed in the field or on the open space, and the corn and sorghum are each piled in 15-30 bundles; after natural drying for 1-6 months, the sweet stem corn or sweet sorghum straw becomes less than 1 6 % of dry straw; crush the sweet corn or sweet sorghum dry straw, the finer the better; take 50 kg of corn or sorghum straw powder to prepare ethanol, the following corn or sorghum straw powder processing ethanol is the same; Add corn stalk powder to 500-750kg of water, soak for 24 hours at room temperature, stir once every 2 hours; then filter the extract; condense the filtrate to 30% sugar content by vacuum distillation Concentrated leaching solution; adding nutrient salts of concentrated extracts 0.08% K 2 HP0 4
  • the quality standards of ethanol products prepared by the above method are:
  • Ethanol (CH 3 C3 ⁇ 4OH) produced from sweet stem corn or sweet sorghum dry straw is a colorless, transparent, impurity-free liquid with a special alcoholic odor. It is volatile and soluble in water. Its density is 7 8 9 g / ml, the boiling point is 7 8 . 3 1 ° C, can be burned, the self-ignition point is 5 5 8 Q C, 1 kg of ethanol can be completely burned to release 7 0 0 0 - 7 1 0 O Kca The heat.
  • Example 2 Collect the sweet stem corn and sweet stalks after harvesting, and tie them into small bundles.
  • the corn and sorghum are each piled in 15-30 bundles; after natural drying for 1-6 months, the water content of sweet stem corn or sweet sorghum straw is less than 16%; The sweet corn or sweet sorghum straw is broken separately, and the finer the smashing, the better; take 50 kg of corn or sorghum straw powder to prepare ethanol, the following sweet corn or sweet sorghum straw powder processing ethanol is the same; take sweet sorghum straw powder Add 300kg of water, soak for 15 to 35 hours at room temperature, and stir once every 0.5-3 hours; then filter the leach solution; concentrate the filtrate to 20-40% sugar content by vacuum distillation Concentrated leaching solution; adding concentrated leaching solution to the concentrated leaching solution, 0.08 % K 2 HP0 4 , 0.150% (NH 4 ) 2 SO 4 and 0.025%
  • Example 3 Collecting straws of sweet stem corn hybrids or sweet sorghum hybrids after grain harvesting, and tying them into small bundles, 15-20 pieces of corn are bundled, and 20-30 sorghum is a bundle, so that the stalks are The water is evaporated as soon as possible; the standing yard code is placed in the field or on the open space, and the corn and sorghum are each piled in 15-30 bundles; after natural drying for 1-6 months, the sweet stem corn hybrid or the sweet sorghum hybrid is in the straw.
  • the water content is less than 16; the sweet corn or sweet sorghum straw is broken, the finer the finer the better; take 50 kg of corn or sorghum straw powder to prepare ethanol, the following sweet corn or sweet sorghum straw powder processing ethanol
  • the process is the same; add 750kg of water to the sweet sorghum straw powder, soak for 15 to 35 hours at room temperature, and stir once every 0.5-3 hours; then filter the leach solution; concentrate the filtrate to include a concentrated leaching solution having a sugar content of 20-40%; adding a concentrated leaching solution of 0.08-0.2% K 2 HP0 4 , 0.250% (NH 4 ) 2 SO 4 and 0.075% MgSO 4 to the concentrated leaching solution and
  • the mixed yeast is fermented in a fermenter to obtain a mash; the mash is subjected to crude steaming And after distillation, to obtain high purity ethanol.

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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

L'invention concerne un procédé de fabrication d'éthanol à partir de tiges séchées de maïs à tige sucrée ou de sorgho à sucre. Ce procédé comprend les étapes suivantes consistant à : broyer finement les tiges séchées de maïs à tige sucrée ou de sorgho à sucre, extraire par l'eau le sucre soluble des tiges finement broyées et concentrer la solution de sucre, puis faire fermenter et distiller la solution de sucre concentrée. Le procédé est simple, et les tiges séchées contenant du sucre pourrait être déposées aisément et traitées afin d'obtenir de l'éthanol à tout moment.
PCT/CN2007/001990 2006-11-28 2007-06-25 Procédé de production d'éthanol à partir de tiges séchées de maïs à tige sucrée ou de sorgho à sucre WO2008064547A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200610134397.9 2006-11-28
CN200610134397A CN1970777B (zh) 2006-11-28 2006-11-28 以甜茎玉米或甜高粱的干秸秆为原料制取乙醇的工艺

Publications (1)

Publication Number Publication Date
WO2008064547A1 true WO2008064547A1 (fr) 2008-06-05

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PCT/CN2007/001990 WO2008064547A1 (fr) 2006-11-28 2007-06-25 Procédé de production d'éthanol à partir de tiges séchées de maïs à tige sucrée ou de sorgho à sucre

Country Status (2)

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CN (1) CN1970777B (fr)
WO (1) WO2008064547A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101914577A (zh) * 2010-06-29 2010-12-15 辽宁省能源研究所 一种结合生物酶解的农作物秸秆膨化预处理方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1970777B (zh) * 2006-11-28 2010-05-12 杨立国 以甜茎玉米或甜高粱的干秸秆为原料制取乙醇的工艺
CN101307334B (zh) * 2008-07-16 2012-06-06 张永北 一种秸秆打浆法生产燃料乙醇的工艺
CN101875949B (zh) * 2010-07-05 2012-06-27 中兴能源(内蒙古)有限公司 一种利用甜高粱茎秆生产燃料乙醇的方法
CN101886091B (zh) * 2010-07-05 2013-01-02 中兴能源(内蒙古)有限公司 利用酵母回流法发酵甜高粱糖汁生产乙醇的方法
CN102277299B (zh) * 2011-06-01 2013-08-21 甘肃农业大学 一种微生物发酵培养基的制备方法

Citations (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
WO1998058071A1 (fr) * 1997-06-18 1998-12-23 Dusan Ciric Procede d'obtention d'alcool ethylique a partir de la cellulose
CN1970777A (zh) * 2006-11-28 2007-05-30 杨立国 以甜茎玉米或甜高粱的干秸秆为原料制取乙醇的工艺

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100406566C (zh) * 2002-12-27 2008-07-30 徐道清 甜高粱秸秆生产乙醇工艺方法
CN1194624C (zh) * 2003-01-20 2005-03-30 丁友昉 多种微生物秸秆发酵饲料与发酵剂及其制作方法

Patent Citations (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
WO1998058071A1 (fr) * 1997-06-18 1998-12-23 Dusan Ciric Procede d'obtention d'alcool ethylique a partir de la cellulose
CN1970777A (zh) * 2006-11-28 2007-05-30 杨立国 以甜茎玉米或甜高粱的干秸秆为原料制取乙醇的工艺

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101914577A (zh) * 2010-06-29 2010-12-15 辽宁省能源研究所 一种结合生物酶解的农作物秸秆膨化预处理方法

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CN1970777A (zh) 2007-05-30

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