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Method of preparing butanol from corn straws

A technology of corn stalks and butanol, which is applied in the field of butanol preparation, can solve the problems of low yield of butanol and incomplete fermentable sugar, and achieve the effect of low cost, less investment and simple preparation process

Inactive Publication Date: 2016-09-14
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 preparing butanol by using corn stalks to solve the problem of low yield of butanol due to incomplete degradation of corn 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 corn stalk to prepare butanol, comprises the following steps:

[0039] S1: The corn stalks were rinsed with 12% salt water for 2.5 hours, and after rinsing, the corn stalks were dried at a temperature of 96-104°C until the water content was ≤8%, to obtain dry corn stalks;

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

[0041] S3: Put the corn stalk 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 300r / min for 1.1h, then cool to room temperature and filter to prepare Obtain pretreated corn stalk particles; the solution A is a mixed solution of acetone, ethanol, ammonium phosphate, the mass concentration of the acetone is 9%, the mass concentration of the ethanol is 70%, the ammonium phosphate The mass concentration is 7%, the volume ratio of the acetone solution, ethanol solution, an...

Embodiment 2

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

[0046] S1: Rinse the corn stalks with 10% salt water for 3 hours, and dry the corn stalks at a temperature of 96-104°C until the water content is ≤8% to obtain dry corn stalks;

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

[0048] S3: Put the corn stalk particles prepared in step S2 into a microwave reactor, add solution A and mix evenly, heat to 60°C, pretreat at a stirring speed of 200r / min for 1.3h, then cool to room temperature and filter to prepare Obtain pretreated corn stalk particles; the solution A is a mixed solution of acetone, ethanol, ammonium phosphate, the mass concentration of the acetone is 8%, the mass concentration of the ethanol is 60%, and the mass concentration of the ammonium phosphate is The mass concentration is 6%, the volume ratio of the acetone solution, ethanol solution, a...

Embodiment 3

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

[0053] S1: Rinse the corn stalks with 15% salt water for 2 hours, and then dry the corn stalks at a temperature of 96-104°C until the water content is ≤8% to obtain dry corn stalks;

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

[0055] S3: Put the corn stalk particles prepared in step S2 into a microwave reactor, add solution A and mix evenly, heat to 64°C, pretreat at a stirring speed of 300r / min for 0.9h, then cool to room temperature and filter to prepare Obtain pretreated corn stalk particles; the solution A is a mixed solution of acetone, ethanol, ammonium phosphate, the mass concentration of the acetone is 10%, the mass concentration of the ethanol is 80%, and the mass concentration of the ammonium phosphate is The mass concentration is 8%, the volume ratio of the acetone solution, ethanol solut...

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PUM

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Abstract

The invention discloses a method of preparing butanol from corn straw, and belongs to the technical field of biomass energy. The butanol is obtained through the following steps: drying corn straws, grinding, and carrying out pretreatment, hydrolysis, and fermentation. The raw material sources are wide, the preparation cost is low; the sugar conversion rate is high, the generated residue amount is little, the technology is green and environment-friendly; compared with the fuel obtained through petroleum refining, the biological fuel namely butanol has a prominent environment-friendly effect, and the discharge of greenhouse gas is effectively reduced. At the same time, the problem of energy shortage is solved.

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 corn 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 corn stalks in rural areas has decreased. The disposal of a large amount of corn stalks has become a serious social problem. In many places, farmers are still directly in the fields. Burning corn 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. C...

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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