CN1824782A - Method for preprocessing biomass - Google Patents

Method for preprocessing biomass Download PDF

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Publication number
CN1824782A
CN1824782A CN 200510022760 CN200510022760A CN1824782A CN 1824782 A CN1824782 A CN 1824782A CN 200510022760 CN200510022760 CN 200510022760 CN 200510022760 A CN200510022760 A CN 200510022760A CN 1824782 A CN1824782 A CN 1824782A
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cellulose
method
acid
hydrolysis
straw
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CN 200510022760
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Chinese (zh)
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CN100516228C (en )
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王联结
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陕西科技大学
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/10Biofuels
    • Y02E50/16Cellulosic bio-ethanol

Abstract

The present invention relates to a method for pretreating biomass instead of sodium hydroxide, fulfuric acid and vapor explosion. Said invention is characterized by that it adopts the following steps: pulverizing cellulose-live biomasses of crop straw and stalk, grass and wood, etc., removing impurity, making acid hydrolysis, separating and extracting cellulose, using cellulose to hydrolyze cellulose, using saccharomycetes to make fermentation to produce ethyl alcohol and recover silicon fluoride. The above-mentioned acid is hydrofluoric acid.

Description

一种生物质预处理的方法 A method of biomass pretreatment

一、技术领域 First, the technical field

:本发明涉及一种生物质能源的方法,尤其是涉及一种生物质预处理的方法。 : The present invention relates to a method of biomass, in particular to a method of biomass pretreatment.

二、背景技术 Second, the technical background

:目前,能够直接分解木质素和半纤维素的微生物作用很慢。 : Currently, directly decompose lignin and hemicellulose of the action of microorganisms is slow. 纤维素酶不能有效的直接水解秸秆。 Cellulase can not effectively direct hydrolysis straw. 通过加热、加入无机酸、碱等将秸秆中的木质素、半纤维素首先除去的预处理是目前生物质发酵生产乙醇的关键。 By heating, addition of an inorganic acid, alkali or the like straw lignin, hemicellulose is first pretreated to remove the biomass is critical for producing ethanol fermentation. 碱法预处理可以除去木质素,但废水污染严重,酸法可以除去半纤维素,但容易产生抑制酵母菌生长的呋喃、小分子酸等物质,汽爆法成本高,产物复杂。 Alkaline pretreatment may remove lignin, but serious water pollution, acid method hemicellulose can be removed, but prone to furan, small molecules inhibit the growth of yeast acids, etc., and the high cost of steam explosion method, the product complex. 找到一种廉价、不增加钠、硫和其它生色元素,不需要高压、高温条件的预处理方法,无疑会大大促进燃料乙醇的生产。 Find an inexpensive, does not increase the sodium, sulfur and other chromophore elements, does not require high pressure, high temperature conditions of the pretreatment methods will undoubtedly promote the production of fuel ethanol.

三、发明内容 III. SUMMARY OF THE INVENTION

:本发明为了解决上述背景技术中的不足之处,提供一种生物质预处理的方法,其可代替氢氧化钠、硫酸和汽爆,减少成本和环境污染。 : In order to solve the above-described shortcomings of the background art, a method of biomass pretreatment, which may be used instead of sodium hydroxide, and sulfuric acid steam explosion, reducing costs and environmental pollution.

为实现上述目的,本发明采用的技术方案为:一种生物质预处理的方法,其特殊之处在于:粉碎农作物秸秆、草和木材等纤维素类生物质,除去异物,酸水解,分离提取纤维素,纤维素酶水解纤维素,酵母菌发酵生产乙醇和回收氟化硅。 To achieve the above object, the technical solution adopted by the invention is: A method for pretreatment of raw material, which is special in that: crushed straw, grass and wood and other cellulosic biomass, to remove foreign matter, acid hydrolysis, separation and extraction cellulose enzymatic hydrolysis of cellulose, ethanol production by Saccharomyces cerevisiae and recovering silicon fluoride.

上述酸可以是氟氢酸。 The above acid may be hydrogen fluoride.

上述氟氢酸的使用浓度范围可以是0.1%-100%(V/V),添加量根据秸秆的硅含量、硬度确定。 Concentration range of the hydrogen fluoride may be 0.1% -100% (V / V), according to the additive amount of silicon content straw, hardness determination.

上述工艺过程包括以下操作步骤:将小麦秸秆切割成为0.5厘米的碎片,放入到耐受高温的塑料桶中,加入1∶1-1.5(V/V)氟氢酸后,将塑料桶放入到配有气体回收管道的沸水浴中加热,直到看到秸秆转向透明、可以看到平行分布排列的纤维素后停止加热,捞出纤维素,淋洗或者风干后再放入到另一塑料桶中,进行纤维素的酶解,直至纤维素水解完全,也可以一边水解,一边进行乙醇发酵,挥发出来的氟化硅气体全部收集、纯化后销售。 The above-described process comprising steps of: wheat straw cut into 0.5 cm pieces, placed in a plastic bucket to withstand high temperatures after addition 1:1-1.5 (V / V) hydrogen fluoride, into the plastic barrel to a boiling water bath equipped with a heated gas recovery conduit, until you see straw steering transparent, it can be seen stopped running parallel arranged heating cellulose, cellulose remove, rinse or dry and then placed in a plastic bucket to another , the enzymatic hydrolysis of cellulose, cellulose until hydrolysis is complete, may be hydrolyzed while, while fermentation ethanol, volatile silicon fluoride gas out of the entire collection, after purification sales.

与现有技术相比,本发明具有的优点和效果如下:1、本发明可代替其它所有的酸、碱、盐和溶剂,以及汽爆方法,不需要高压高温,成本低,不加入钠、硫等生色元素,无残留污染物。 Compared with the prior art, the present invention has the following advantages and effects: 1, the present invention can replace all other acids, bases, salts and solvates, and steam explosion method, does not require high temperature and high pressure, low cost, without addition of sodium, sulfur and other elements chromophore, no residual contamination.

2、本发明不产生抑制酵母菌的次生物质。 2, the present invention does not produce secondary substance to inhibit yeast.

3、本发明的获得的纤维素得率高、容易被纤维素酶水解。 3, the present invention is cellulose obtained in high yield, easily cellulase hydrolysis.

四、具体实施方式 IV DETAILED DESCRIPTION

:本发明的生产工艺包括:粉碎秸秆、草和木材等纤维素类生物质、除去异物、酸水解、分离提取纤维素、纤维素酶水解纤维素、酵母菌发酵生产乙醇和回收氟化硅。 : The process of the present invention includes: crushing straw, grass and wood and other cellulosic biomass, to remove foreign matter, acid hydrolysis, separation and extraction, cellulose enzymatic hydrolysis of cellulose, ethanol production by Saccharomyces cerevisiae and recovering silicon fluoride.

本发明的原理是:植物秸秆、叶中含有硅,通过氟氢酸和植物中的硅生成气态氟化硅,除去植物中的硅,使得植物茎叶软化,氟氢酸中的H+随着氟化硅的逐步生成和排除而增加,H+是催化剂和还原剂,进而加速原本已经松动了的、纤维素、半纤维素和木质素为主的三者的交联。 The principles of the present invention are: plant stalks, leaves contain silicon, silicon to form gaseous silicon fluoride and hydrofluoric acid plants, removing silicon plants, plant stems and leaves such softening, hydrogen fluoride with fluorine in H + and gradually generating exclusion silicon increases, H + is a catalyst and a reducing agent, thereby accelerating the already loose of cellulose, hemicellulose, and lignin-based crosslinked three. 氟氢酸中的氟以氟化硅形式蒸发,留下的仅仅是H+,全部预处理过程不增加任何生色和多余的元素。 Hydrofluoric acid fluoride in the form of silicon fluoride was evaporated, leaving only H +, all without any additional pretreatment and excess chromophore elements. 经常用作玻璃腐蚀剂的氟氢酸具有很好溶剂作用,虽然向大气中释放氟,但本发明将产生的、具有一定纯度的氟化硅回收,既减少了环境污染,又带来新的经济效益。 Is often used as a glass etchant hydrofluoric acid has good solvent action, although fluoride release into the atmosphere, but the present invention is produced, a certain fluorinated purity silicon recovery, reducing environmental pollution, and bring new economic benefit.

实施例:将小麦秸秆切割粉碎成为小于0.5cm的碎片,放入到耐受高温的塑料桶中压实,加入1∶1-1.5(V/V)的40%(V/V)氟氢酸后,将塑料桶放入到配有气体回收管道的沸水浴中加热,边加热边搅拌,直到看到秸秆转向透明、可以看到平行分布排列的纤维素后停止加热,捞出纤维素,淋洗或者风干后再放入到另一塑料桶中,再进行纤维素的酶解,直至纤维素水解完全。 Example: The pulverized wheat straw cut into pieces of less than 0.5cm, put into a high temperature resistant plastic bucket compacted added 1:1-1.5 (V / V) to 40% (V / V) hydrogen fluoride after the plastic bucket was placed with the gas recovery conduit boiling water bath was heated, stirred with heating, until you see straw steering transparent, it can be seen running parallel arranged heating was stopped after cellulose, cellulose remove, leaching wash or dry and then placed in a plastic bucket to another, then the hydrolysis of cellulose, cellulose until hydrolysis was complete.

Claims (4)

  1. 1.一种生物质预处理的方法,其特征在于:粉碎农作物秸秆、草和木材等纤维素类生物质,除去异物,酸水解,分离提取纤维素,纤维素酶水解纤维素,酵母菌发酵生产乙醇和回收氟化硅。 1. A method for pretreatment of raw material, wherein: crushed straw, grass and wood and other cellulosic biomass, foreign matter, acid hydrolysis, separation and extraction to remove, cellulose enzymatic hydrolysis of cellulose, fermentation of recovering silicon fluoride and the production of ethanol.
  2. 2.根据权利要求1所述的一种生物质预处理的方法,其特征在于:所述酸为氟氢酸。 The method according to claim 1. A method as claimed in claim pretreated biomass, wherein: the acid is hydrofluoric acid.
  3. 3.根据权利要求2所述的一种生物质预处理的方法,其特征在于:所述氟氢酸的使用浓度范围为0.1%-100%(V/V),添加量根据秸秆的硅含量、硬度确定。 3. The method of claim 2 one kind of biomass pretreatment claim, characterized in that: the concentration range of hydrofluoric acid is 0.1% -100% (V / V), according to the additive amount of silicon content straw , hardness determination.
  4. 4.根据权利要求2或3所述的一种生物质预处理的方法,其特征在于包括以下操作步骤:将小麦秸秆切割成为0.5厘米的碎片,放入到耐受高温的塑料桶中,加入1∶1-1.5(V/V)氟氢酸后,将塑料桶放入到配有气体回收管道的沸水浴中加热,直到看到秸秆转向透明、可以看到平行分布排列的纤维素后停止加热,捞出纤维素,淋洗或者风干后再放入到另一塑料桶中,进行纤维素的酶解,直至纤维素水解完全,也可以一边水解,一边进行乙醇发酵,挥发出来的氟化硅气体全部收集、纯化后销售。 4. The method of claim 2 or 3 one kind of biomass pretreatment claim, characterized by comprising the steps of: wheat straw cut into 0.5 cm pieces, placed in a plastic bucket to withstand high temperatures, is added 1:1-1.5 (V / V) after the hydrogen fluoride, the plastic bucket was placed in boiling water bath equipped with a heated gas recovery conduit, until you see straw steering transparent, parallel distribution arrangement can be seen after stopping cellulose heating, cellulose remove, rinse or dry and then put into another plastic bucket, enzymatic hydrolysis of cellulose, cellulose until hydrolysis is complete, while the hydrolysis may be, while for ethanol fermentation, fluorinated volatilized all silicon gas collected after purification sales.
CN 200510022760 2005-12-29 2005-12-29 Method for preprocessing biomass CN100516228C (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100545266C (en) 2007-07-23 2009-09-30 吉林省轻工业设计研究院 Pre-treating method for producing ethanol by corn straw enzymatical hydrolysis
CN101838946A (en) * 2010-05-07 2010-09-22 李平 Method for comprehensively treating silicon tetrachloride and papermaking pulping black liquor
CN101952398A (en) * 2007-12-03 2011-01-19 格沃股份有限公司 Renewable compositions
CN101538597B (en) 2009-04-22 2011-06-08 安徽安生生物化工科技有限责任公司 Method for disposing straws by sulfur trioxide gas
CN101736630B (en) 2008-11-21 2011-08-17 安琪酵母股份有限公司 Pretreatment method for biorefinery of lignocellulose
CN103614418A (en) * 2013-11-27 2014-03-05 屠纪民 Method for producing fuel ethanol through synchronous saccharification and fermentation
CN103696307A (en) * 2013-12-17 2014-04-02 西南交通大学 Process for removing ash content in straw cellulose
US8975461B2 (en) 2010-05-07 2015-03-10 Gevo, Inc. Renewable jet fuel blendstock from isobutanol

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CN102431071A (en) * 2011-10-25 2012-05-02 张文生 Straw fiber board manufacturing method and liquid ball mill with plastic lining boards

Family Cites Families (2)

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Publication number Priority date Publication date Assignee Title
CN1283701A (en) 1999-08-04 2001-02-14 赵春树 Process for preparing alcohol from stress or stalk of agricultural crops
CN1114695C (en) 2000-06-02 2003-07-16 唐山市冀东溶剂厂 Method for producing alcohol by using plant fiber as raw material

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100545266C (en) 2007-07-23 2009-09-30 吉林省轻工业设计研究院 Pre-treating method for producing ethanol by corn straw enzymatical hydrolysis
CN101952398B (en) 2007-12-03 2014-05-21 格沃股份有限公司 Renewable compositions
CN101952398A (en) * 2007-12-03 2011-01-19 格沃股份有限公司 Renewable compositions
CN101736630B (en) 2008-11-21 2011-08-17 安琪酵母股份有限公司 Pretreatment method for biorefinery of lignocellulose
CN101538597B (en) 2009-04-22 2011-06-08 安徽安生生物化工科技有限责任公司 Method for disposing straws by sulfur trioxide gas
CN101838946A (en) * 2010-05-07 2010-09-22 李平 Method for comprehensively treating silicon tetrachloride and papermaking pulping black liquor
US8975461B2 (en) 2010-05-07 2015-03-10 Gevo, Inc. Renewable jet fuel blendstock from isobutanol
CN103614418A (en) * 2013-11-27 2014-03-05 屠纪民 Method for producing fuel ethanol through synchronous saccharification and fermentation
CN103696307A (en) * 2013-12-17 2014-04-02 西南交通大学 Process for removing ash content in straw cellulose
CN103696307B (en) * 2013-12-17 2016-05-18 西南交通大学 One kind of ash removal process straw cellulose

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