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Method for preparing butanol from cotton straw

A technology for cotton straw and butanol, which is applied in the field of butanol preparation, can solve the problems of low yield of butanol, incomplete fermentable sugar and the like, and achieves the effects of low cost, low investment and simple preparation process

Inactive Publication Date: 2016-09-07
广西南宁荣威德新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for producing butanol by using cotton stalks to solve the problem of low butanol yield due to incomplete degradation of cotton stalks into fermentable sugars

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A kind of method utilizing cotton stalk to prepare butanol, comprises the following steps:

[0039] S1: Rinse the cotton stalks with 12% salt water for 2.5 hours. After rinsing, dry the cotton stalks at a temperature of 92-102°C until the water content is ≤10%, to obtain dry cotton stalks;

[0040] S2: crush the dry cotton stalks prepared in step S1, and pass through a 150-mesh sieve to obtain cotton stalk particles;

[0041] S3: Put the cotton straw particles prepared in step S2 into a microwave reactor, add solution A and mix evenly, heat to 63°C, pretreat at a stirring speed of 300r / min for 0.9h, then cool to room temperature and filter to prepare Obtain pretreated cotton stalk particles; the solution A is a mixed solution of butanone, ethanol, ammonium phosphate, the mass concentration of the butanone is 9%, the mass concentration of the ethanol is 70%, and the phosphoric acid The mass concentration of the ester ammonium salt is 7%, the volume ratio of the butanone...

Embodiment 2

[0045] A kind of method utilizing cotton stalk to prepare butanol, comprises the following steps:

[0046] S1: Rinse the cotton stalks with 10% salt water for 3 hours, and then dry the cotton stalks at a temperature of 92-102°C until the water content is ≤10% to obtain dry cotton stalks;

[0047] S2: crush the dry cotton stalks prepared in step S1, and pass through a 120-mesh sieve to obtain cotton stalk particles;

[0048] S3: Put the cotton straw particles prepared in step S2 into a microwave reactor, add solution A and mix evenly, heat to 62°C, pretreat at a stirring speed of 200r / min for 1 hour, then cool to room temperature and filter to obtain Pretreated cotton stalk particles; the solution A is a mixture of butanone, ethanol, and ammonium phosphate ester, the mass concentration of the butanone is 8%, the mass concentration of the ethanol is 60%, and the phosphate ester The mass concentration of the ammonium salt is 6%, the volume ratio of the butanone solution, ethanol...

Embodiment 3

[0052] A kind of method utilizing cotton stalk to prepare butanol, comprises the following steps:

[0053] S1: Rinse the cotton stalks with 15% salt water for 2 hours, and then dry the cotton stalks at a temperature of 92-102°C until the water content is ≤10% to obtain dry cotton stalks;

[0054] S2: crush the dry cotton stalks prepared in step S1, and pass through a 200-mesh sieve to obtain cotton stalk particles;

[0055] S3: Put the cotton straw particles prepared in step S2 into a microwave reactor, add solution A and mix evenly, heat to 65°C, pretreat at a stirring speed of 300r / min for 0.8h, then cool to room temperature and filter to prepare Obtain pretreated cotton stalk particles; the solution A is a mixed solution of butanone, ethanol, ammonium phosphate, the mass concentration of the butanone is 10%, the mass concentration of the ethanol is 80%, and the phosphoric acid The mass concentration of the ester ammonium salt is 8%, the volume ratio of the butanone solutio...

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PUM

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Abstract

The invention discloses a method for preparing butanol from cotton straw, and belongs to the technical field of biomass energy. Butanol is prepared from steps of cotton straw drying, crushing, pretreatment, hydrolysis, fermentation and the like. The method is wide in raw material resource and low in butanol preparation cost; the method is simple in preparation process, small in investment and applicable to large-scale popularization and application; compared with fuel prepared by using a petroleum refining method, the bio-fuel butanol prepared by using the method disclosed by the invention has a remarkable environment-friendly effect, and is capable of effectively reducing emission of greenhouse gas. In addition, a novel solving scheme is provided for the issue of energy scarcity.

Description

【Technical field】 [0001] The invention belongs to the technical field of biomass energy, and in particular relates to a method for preparing butanol from cotton stalks. 【Background technique】 [0002] Due to the popularization of coal, electricity and natural gas and the abundance of various industrial products in China in the past two decades, the demand for cotton stalks in rural areas has decreased, and the disposal of a large amount of cotton stalks has become a serious social problem. Burning cotton stalks will cause air pollution, fires, and the failure of planes to take off and land normally. [0003] With the growth of population, food, energy and environment are the most important challenges facing human beings. The production of renewable clean energy from cellulosic raw materials has attracted increasing attention, and the production of fuel butanol from crop wastes is considered to be the most promising industry. Cotton is planted in a wide area in my country, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/16C12R1/145
CPCC12P7/16Y02E50/10
Inventor 覃央央
Owner 广西南宁荣威德新能源科技有限公司
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