Efficient saccharification processing method for maize straws

A technology for corn stalk and saccharification treatment, which is applied in the production of sugar, sugar production, glucose production, etc., can solve the problems of high equipment requirements, high energy consumption, low sugar yield, etc., and achieve high saccharification rate and reduce production energy. Consumption, simple operation effect

Active Publication Date: 2014-07-02
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a high-efficiency saccharification method for corn stalks in order to solve the problems of high energy consumption, low sugar yield and high equipment requirements in the existing saccharification treatment of corn stalks

Method used

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  • Efficient saccharification processing method for maize straws
  • Efficient saccharification processing method for maize straws
  • Efficient saccharification processing method for maize straws

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specific Embodiment approach 1

[0049] Specific implementation mode 1: The method for high-efficiency saccharification treatment of corn stalks in this implementation mode is carried out according to the following steps:

[0050] 1. Crushing of corn stalk fiber raw materials:

[0051] Crush the dried corn stalks, pass through a 60-100 mesh sieve, and store at room temperature;

[0052] 2. Concentrated acid hydrolysis:

[0053] Mix the crushed raw materials in step 1 and the sulfuric acid solution with a mass percentage of 40% to 60% according to the ratio of mass to volume: 1g: (50 to 100) mL, let stand at room temperature for 20 to 40 minutes, and then Centrifuge at 5000r / min~10000r / min for 5min~10min, collect the centrifugate and concentrated acid hydrolysis residue respectively, wash the concentrated acid hydrolysis residue with water, mix the cleaning solution with the centrifugate to obtain a mixed solution;

[0054] 3. Acid recovery:

[0055] The mixed solution obtained in step 2 is separated from the...

specific Embodiment approach 2

[0058] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the raw material after step 1 crushing described in step 2 and the sulfuric acid solution with a mass percentage content of 60% are 1g: 50mL according to the mass-to-volume ratio ratio mix. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0059] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that it is centrifuged for 5 minutes at a rate of 5000 r / min as described in Step 2. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses an efficient saccharification processing method for maize straws, which relates to a saccharification processing method for maize straws. The invention aims to solve the problems that existing saccharification processing methods for maize straws are large in energy consumption, low in sugar preparation rate and high in facility request. The method disclosed by the invention comprises the steps of 1, crushing fiber raw materials of maize straws; 2, carrying out concentrated acid hydrolysis on the obtained product; 3, recovering acid liquor; and 4, carrying out catalytic hydrolysis on the obtained product by using a Fe<2+> aided dilute acid. Through the method disclosed by the invention, under the condition that apparatuses are limited, the reaction time can be shortened, the sugar preparation rate of raw materials can be increased, the cost can be effectively reduced, and the economical efficiency can be improved, and according to the invention, the saccharification ratio of maize straws can reach 43.8-52.9%. The method disclosed by the invention is used for the saccharification processing of maize straws.

Description

technical field [0001] The invention relates to a method for saccharifying corn stalks, which belongs to the technical field of biochemical industry. Background technique [0002] With the depletion of global fossil energy, the increase of air pollution and the development of economy, it has become an inevitable trend of current development to produce bioenergy from biomass raw materials to replace fossil energy. At present, the production of most bioenergy depends on the raw materials of food crops such as sugarcane and corn, and there is a danger of high production costs, causing and aggravating food problems. Corn stover is a large amount of agricultural waste, the main components are cellulose, hemicellulose, lignin and some soluble substances. Among them, cellulose is the main source of fermentable sugar, with a content of about 35% to 45%. Fermentable sugar can be further converted into ethanol, acetone, butanol, acetic acid, butanediol and other liquid fuels and chem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C13K1/02
Inventor 刘冰峰聂煜昊陈啊聪刘昌超
Owner HARBIN INST OF TECH
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