Clean production process of xylose

A clean production and xylose technology, applied in the direction of monosaccharides, sugar derivatives, sugar derivatives, etc., can solve the problems of difficult biochemical treatment, serious environmental pollution, high acid and alkali consumption, and achieve good energy and water saving effects, simplify Process flow and the effect of less waste water discharge

Inactive Publication Date: 2015-04-08
山东福田科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this invention is to provide a kind of technique of clean production xylose, to solve the problem that sewage contains sulfate ion in the prior art, is difficult for biochemical treatment, and water consumption is big, and acid, alkali consumption are high, and energy consumption is high, and waste water discharge volume is big, Serious environmental pollution, high cost, long production cycle and other issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Steam-explosion pretreatment: Take 800g of corncobs and put them into a 5-liter steam-explosion equipment, raise the temperature to 200°C, keep it warm for 150 seconds, and spray it quickly to obtain steam-explosion corncob slurry.

[0033] 2. Enzymolysis: Put 3000g of steamed corncob slurry (about 600g of dry corncob) into a 10-liter enzymolysis tank, add 4200g of industrial water at a ratio of 1:5 of dry corncob, and adjust the pH value with 30% hydrochloric acid 3.0, control the temperature at 50°C, add 160g of compound hemicellulase, and carry out enzymatic hydrolysis for 50 hours under constant stirring, so that the hemicellulose component in it is converted into a single molecule of xylose, and the mixture of xylose liquid and slag is obtained. mixture.

[0034] 3. Filtration and separation: use a plate and frame filter to separate the xylose liquid from the slag to obtain 5400g of xylose liquid with a dry matter concentration of 8%, a xylose purity of 59.8%, a...

Embodiment 2

[0040] 1. Steam-explosion pretreatment: Take 500g of bagasse and put it into a 5-liter steam-explosion equipment, raise the temperature to 250°C, keep it warm for 60 seconds, and spray it quickly to obtain steam-exploded bagasse slurry.

[0041] 2. Enzymolysis: Put 2500g of steamed and exploded bagasse slurry (about 350g of dry bagasse) into a 10-liter enzymolysis tank, add 6300g of industrial water at a ratio of 1:10 of bagasse dry matter, and adjust the pH value with 30% hydrochloric acid 5.0, control the temperature at 30°C, add 8g of xylanase, and carry out enzymatic hydrolysis for 10 hours under constant stirring, so that the hemicellulose component in it can be converted into a single molecule of xylose, and a mixture of xylose liquid and slag can be obtained .

[0042] 3. Filtration and separation: use a plate and frame filter to separate the xylose liquid from the slag to obtain 7500g of xylose liquid with a dry matter concentration of 5%, a xylose purity of 40.5%, a l...

Embodiment 3

[0048] 1. Steam-explosion pretreatment: Take 700g of Moso bamboo slag and put it into a 5-liter steam-explosion equipment, raise the temperature to 220°C, keep it warm for 120 seconds, and spray it quickly to obtain the steam-exploded Moso bamboo slag slurry.

[0049] 2. Enzymolysis: Put 2000g of steamed and exploded moso bamboo residue slurry (about 500g of dry bamboo residue) into a 10-liter enzymolysis tank, add 6000g of industrial water at 1:15 of the dry bamboo residue, and adjust the pH with 30% sodium hydroxide The value is 4.5, the temperature is controlled at 40°C, 40g of compound hemicellulase is added, and under the condition of constant stirring, the enzymolysis is carried out for 40 hours, so that the hemicellulose components in it are converted into xylose of a single molecule, and xylose liquid and xylose are obtained. mixture of slag.

[0050] 3. Filtration and separation: use a plate and frame filter to separate the xylose liquid from the slag to obtain 7000g ...

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Abstract

The invention provides a clean production process of xylose. The clean production process of xylose mainly comprises the following steps of: pretreating, namely steaming and exploding; hydrolyzing with an enzyme; refining by separating chromatographically; concentrating continuously with a membrane; and concentrating by evaporating steam. Due to the adoption of the clean production process of xylose, the problems in the prior art that sewage contains sulfate ions and can not be treated biochemically can be solved, and the problems of high consumption of water, acids, alkalis and energy, large discharge amount of wastewater, serious pollution to environment, high cost and long production cycle can be also solved.

Description

technical field [0001] The invention belongs to the technical field of functional sugar production, and in particular relates to a preparation process for clean production of xylose. Background technique [0002] Xylose product is white crystal or crystalline powder, sweet taste, 70% of the sweetness of sucrose, no energy value, can not provide heat for the human body, has a high value-added effect on the bifidobacteria in the human intestinal tract, and can improve The micro-ecological environment of the human body improves the body's immunity. Xylose products are mainly used to produce xylitol, which is widely used in food processing, beverage addition, and pet food preparation. It has an important function and role in improving and improving people's quality of life. [0003] The traditional preparation of xylose products is based on agricultural and forestry waste such as corncobs, bagasse, bamboo residue, birch bark, etc., after pretreatment, hydrolysis with sulfuric ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P19/02C12P19/14C07H3/02C07H1/06
Inventor 王成福方春雷王星云李林杜瑞锋高永旭李毅
Owner 山东福田科技集团有限公司
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