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Preprocessing method for producing ethyl alcohol through straw and application

A pretreatment and ethanol technology, applied in the direction of biofuels, fermentation, etc., can solve the problems of long treatment cycle, low treatment efficiency, low energy consumption of biological pretreatment, etc., to achieve convenient operation, low energy consumption, and avoid unsafe factors Effect

Inactive Publication Date: 2016-11-09
SHENYANG AGRI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Biological pretreatment has low energy consumption, simple operation, and does not pollute the environment, but its treatment efficiency is low and the treatment cycle is long

Method used

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  • Preprocessing method for producing ethyl alcohol through straw and application

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Effect test

Embodiment 1

[0025] In this embodiment, the pretreatment method for producing ethanol from corn stalks comprises the following steps:

[0026] 1. Crush the corn stalks, pass through a 40# sieve, and place them in a desiccator for later use.

[0027] 2. In the preparation of 300mL Fenton's reagent: FeCl 2 The concentration is 1mmol, H 2 o 2 The concentration is 3wt%.

[0028] 3. Put 10 g of crushed and sieved corn stalks into the above solution, react at room temperature for 24 hours, vacuum filter, wash, and then dry at 105° C. to obtain pretreated corn stalks.

Embodiment 2

[0030] In this embodiment, the pretreatment method for producing ethanol from corn stalks comprises the following steps:

[0031] 1. Crush the corn stalks, pass through a 40# sieve, and place them in a desiccator for later use.

[0032] 2. In the preparation of 300mL Fenton's reagent: FeCl 2 The concentration is 2mmol, H 2 o 2 The concentration is 2wt%.

[0033] 3. Put 10 g of crushed and sieved corn stalks into the above solution, react at room temperature for 24 hours, vacuum filter, wash, and then dry at 50° C. to obtain pretreated corn stalks.

Embodiment 3

[0035] In this embodiment, the pretreatment method for producing ethanol from corn stalks comprises the following steps:

[0036] 1. Crush the corn stalks, pass through a 40# sieve, and place them in a desiccator for later use.

[0037] 2. In the preparation of 300mL Fenton's reagent: FeCl 2 The concentration is 3mmol, H 2 o 2 The concentration is 1wt%.

[0038] 3. Put 10 g of crushed and sieved corn stalks into the above solution, react at room temperature for 48 hours, vacuum filter, wash, and then dry at 80° C. to obtain pretreated corn stalks.

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Abstract

The invention relates to the technical field of producing ethyl alcohol through lignin cellulose type raw materials, in particular to a preprocessing method for producing ethyl alcohol through straw and application. The method includes the following steps of firstly, smashing corn straw, screening the smashed straw through a 40# screen, and putting the material in a dryer for use; secondly, putting the corn straw and a Fenton's reagent in a triangular flask, conducting reaction for 24-72 h at room temperature, and sequentially conducting vacuum suction filtration, washing and drying on the corn straw to obtain the preprocessed corn straw. By means of the preprocessed straw, the enzymatic glucose yield is improved by 57%, and the method is easy to operate, free of high-temperature high-pressure equipment, low in equipment requirement, low in energy consumption and suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of ethanol production from lignocellulosic raw materials, in particular to a pretreatment method and application of ethanol production from straw. Background technique [0002] Biomass is an important renewable resource, and using biomass to produce fuel ethanol is a new form of energy utilization with little environmental pollution and is currently a research hotspot. my country is rich in biomass raw materials, among which the annual output of corn stalks is as high as 700 million tons, accounting for 35% of the biomass raw materials. If biomass resources can be converted into usable liquid or gas fuels, it will effectively alleviate a series of problems faced by human beings, such as resource crisis, energy shortage and environmental pollution, and has a good application prospect. [0003] Straw raw materials are mainly composed of cellulose, hemicellulose and lignin linked by covalent bonds to form a ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/10
CPCC12P7/10C12P2201/00Y02E50/10
Inventor 陈富于刘庆玉孙清李阳
Owner SHENYANG AGRI UNIV
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