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Method for preparing ethanol from loofah stems

A loofah vine and ethanol technology, applied in biofuels, fermentation, etc., can solve the problems of low ethanol yield and incomplete fermentable sugar, and achieve the effects of high sugar conversion rate, low cost and less residue

Inactive Publication Date: 2017-02-15
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

[0004] The technical problem to be solved by the present invention is to provide a method for preparing ethanol by using loofah vines, so as to solve the problems of low yield of ethanol due to incomplete degradation of loofah vines into fermentable sugars

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A kind of method utilizing loofah vine to prepare ethanol, comprises the following steps:

[0036] S1: Rinse the loofah vines with 12% salt water for 2.5 hours, and then dry the loofah vines at a temperature of 93-104°C until the water content is ≤12% to obtain dried loofah vines;

[0037] S2: crush the dry loofah vines prepared in step S1, and pass through a 150-mesh sieve to obtain loofah vine particles;

[0038] S3: Put the loofah vine 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 200-300r / min for 1h, then cool to room temperature and filter, Prepare the luffa vine particle of pretreatment; The solution A is a mixed solution of butanone, ethanol, ammonium carboxylate, the mass concentration of the butanone is 9%, the mass concentration of the ethanol is 70%, the The mass concentration of carboxylate ammonium salt is 7%, and the volume ratio of described butanone solution, ethanol ...

Embodiment 2

[0042] A kind of method utilizing loofah vine to prepare ethanol, comprises the following steps:

[0043] S1: Rinse the loofah vines with 10% salt water for 3 hours, and then dry the loofah vines at a temperature of 93-104°C until the water content is ≤12% to obtain dry loofah vines;

[0044] S2: crush the dry loofah vine obtained in step S1, and pass through a 120-mesh sieve to obtain loofah vine particles;

[0045] S3: Put the loofah vine 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 1.2h, then cool to room temperature and filter to prepare Obtain the luffa vine particle of pretreatment; Described solution A is the mixed solution of butanone, ethanol, carboxylate ammonium salt, and the mass concentration of described butanone is 8%, and the mass concentration of described ethanol is 60%, and the mass concentration of described carboxylate The mass concentration of acid ammoni...

Embodiment 3

[0049] A kind of method utilizing loofah vine to prepare ethanol, comprises the following steps:

[0050] S1: Rinse the loofah vines with 15% salt water for 2 hours, and then dry the loofah vines at a temperature of 93-104°C until the water content is ≤12% to obtain dry loofah vines;

[0051] S2: crush the dry loofah vine obtained in step S1, and pass through a 200-mesh sieve to obtain loofah vine particles;

[0052] S3: Put the loofah vine 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 the luffa vine particle of pretreatment; Described solution A is the mixed solution of butanone, ethanol, ammonium carboxylate, the mass concentration of described butanone is 10%, the mass concentration of described ethanol is 80%, the carboxylate The mass concentration of acid ammonium salt is 8%, and the volume ratio of described...

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Abstract

The invention discloses a method for preparing ethanol from loofah stems, and belongs to the technical field of biomass energy. The ethanol is prepared by conducting such steps as drying, crushing, pre-processing, hydrolyzing and fermenting the loofah stems and the like. With the application of the method provided by the invention, the uncertainty of a microbial enzyme fermentation sugar making process can be avoided, so that technical risks are reduced; the method provided by the invention, as a green and environment-friendly process, is high in sugar conversion rate and low in the amount of generated residues; and the method provided by the invention is relatively low in hydrolysis temperature, low in energy consumption and is conducive to the popularization and application of related technologies.

Description

technical field [0001] The invention belongs to the technical field of biomass energy, and in particular relates to a method for preparing ethanol from loofah vines. Background technique [0002] 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 ethanol from crop wastes is considered to be the most promising industry. Loofah has a wide planting area in my country, and a large amount of loofah vines are also produced every year when the fruit is harvested. The protein content of loofah vine is low but the carbohydrate content is high, and the carbohydrate content of individual varieties is as high as 82.6% of the dry matter, so it is a high-quality raw material for the production of biomass energy. Research on the conversion of vines to fuel ethanol has started at home and abroa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/10
CPCC12P7/10Y02E50/10
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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