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High-efficiency corn straw pretreatment method

A corn stalk and pretreatment technology, applied in the field of physical and chemical treatment of biomass, can solve the problems of low conversion rate of monosaccharide, inapplicability to large-scale treatment, low efficiency, etc., achieve improved effect, save manpower and material resources, and improve the effect of unit

Inactive Publication Date: 2019-04-30
GUANGDONG CLEAMOL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this treatment method is inefficient, not suitable for large-scale treatment, and the conversion rate of monosaccharides is low

Method used

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  • High-efficiency corn straw pretreatment method

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Experimental program
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Effect test

Embodiment 1

[0021] A kind of efficient corn stalk pretreatment method, adopts such as figure 1 The shown Jiaolong 1 and pretreatment tank 2 are processed, including the following processing steps:

[0022] (1) Grinding: Use dry corn stalks as raw materials, crush the coarse corn stalks with a pulverizer, and perform secondary processing with a vibrating sieve mill, so that the particle length of the corn stalks is within the range of 0.1 to 1 cm; and ensure that the corn stalks The water content is below 1‰;

[0023] (2) Acid mixing: turn on Jiaolong, and adjust the rotating speed to 12rpm / min; put corn stalks into Jiaolong 1 from the input end 12 of the corn structure of Jiaolong 1 at a feed rate of 24kg / h, and simultaneously put the mass fraction of 1% dilute sulfuric acid is fed into Jiaolong 1 from the dilute sulfuric acid input port 13 at a rate of 21.8kg / h; corn stalks and dilute sulfuric acid are mixed evenly while being transported by the threaded transmission pipe 11 in Jiaolong...

Embodiment 2

[0028] A kind of efficient corn stalk pretreatment method, adopts such as figure 1 The Jiaolong 1 and pretreatment tank 2 treatments shown include the following treatment steps

[0029] (1) Grinding: Use dry corn stalks as raw materials, crush the coarse corn stalks with a pulverizer, and perform secondary processing with a vibrating sieve mill, so that the particle length of the corn stalks is within the range of 0.1 to 1 cm; and ensure that the corn stalks The water content is below 1‰;

[0030] (2) Acid mixing: turn on Jiaolong, and adjust the rotating speed to 10rpm / min; put corn stalks into Jiaolong 1 from the input end 12 of the corn structure of Jiaolong 1 at a feed rate of 20kg / h, and simultaneously put the mass fraction of 1% dilute sulfuric acid is fed into Jiaolong 1 from the dilute sulfuric acid input port 13 at a rate of 25kg / h; corn stalks and dilute sulfuric acid are mixed evenly while being transported by the threaded transmission pipe 11 in Jiaolong 1; The i...

Embodiment 3

[0035] A kind of efficient corn stalk pretreatment method, adopts such as figure 1 The Jiaolong 1 and pretreatment tank 2 treatments shown include the following treatment steps

[0036] (1) Grinding: Use dry corn stalks as raw materials, crush the coarse corn stalks with a pulverizer, and perform secondary processing with a vibrating sieve mill, so that the particle length of the corn stalks is within the range of 0.1 to 1 cm; and ensure that the corn stalks The water content is below 1‰;

[0037] (2) Acid mixing: turn on Jiaolong, and adjust the rotating speed to 15rpm / min; put corn stalks into Jiaolong 1 from the input end 12 of the corn structure of Jiaolong 1 at a feed rate of 30kg / h, and simultaneously put the mass fraction of 1% dilute sulfuric acid is fed into Jiaolong 1 from dilute sulfuric acid input port 13 at a rate of 20kg / h; corn stalks and dilute sulfuric acid are mixed evenly while being transported by threaded transmission pipe 11 in Jiaolong 1; The inclinati...

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Abstract

The invention provides a high-efficiency corn straw pretreatment method, wherein the method comprises the following steps: (1) crushing dried corn straw to the particle size in a range of 0.1-1 cm, and guaranteeing the moisture content to be 0.1% or less; (2) synchronously putting corn straw and 1% dilute sulfuric acid with appropriate feeding amount into a packing auger, and mixing and transporting to a pretreatment tank through the packing auger; and (3) carrying out high temperature and high pressure hydrolysis by steam in a pretreatment tank. The optimum yield of fermented monosaccharide of the treated corn straw can be up to 64.3%, the yield of glucose is 85% and the yield of xylose is 49%.

Description

technical field [0001] The invention relates to a physical and chemical treatment method for biomass, in particular to a corn stalk pretreatment method that can improve the monosaccharide conversion rate of corn stalks. Background technique [0002] Corn stalks are important production resources for industrial and agricultural production. Corn stalks are rich in nutrients and available chemical components, containing more than 30% carbohydrates, 2%-4% protein and 0.5%-1% fat. Straw is a multi-purpose renewable biological resource . Every year, more than 50% of corn stalks are burned by farmers, which not only wastes resources, but also pollutes the environment. Using corn stalks as raw materials to make charcoal fertilizer is a new way to recycle corn stalks. [0003] Corn stalks can be converted into monosaccharides through hydrolysis and fermentation. The traditional treatment method is to add acid or alkali to hydrolyze the corn stalks after they are broken into pieces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P19/02
CPCC12P19/02C12P2201/00
Inventor 陈胜杰巫晓冬金明杰
Owner GUANGDONG CLEAMOL TECH CO LTD