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Method and device for continuously hydrolyzing corn bran

A corn husk and hydrolyzate technology, which is applied in the field of corn deep processing, can solve the problems of high energy consumption, low hydrolyzate quality and production efficiency, and achieves the effects of low energy consumption, convenient automatic operation and high production efficiency

Inactive Publication Date: 2013-02-27
SHANDONG LUZHOU FOOD GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process first heats up the material, and then hydrolyzes it through acid treatment to obtain a hydrolyzed solution. It belongs to the intermittent hydrolysis process, which not only consumes high energy, but also has low quality and production efficiency of the hydrolyzed solution.

Method used

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  • Method and device for continuously hydrolyzing corn bran

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A method for continuous hydrolysis of corn bran, comprising the following steps:

[0036] (1) corn bran is mixed with sulfuric acid with a concentration of 1.5%, presoaked for 10 minutes, and the amount of sulfuric acid added is 9 units of sulfuric acid per unit weight of corn bran;

[0037] (2) After the material mixed and pre-soaked in step (1) is heated to 118° C. by means of jet instant heating with steam as the heat source, it is hydrolyzed for 3 hours to obtain a hydrolyzed solution;

[0038] (3) The hydrolyzate prepared in step (2) is reduced to 80-85° C. by means of flash cooling, and the hydrolyzate and slag are separated by pressing with a screw press;

[0039] After testing, the solid content of the hydrolyzate is 9.3%, and the main components are as follows:

[0040] Salt 31.24%, glucose 19.53%, xylose 29.62%, arabinose 16.32%, and the rest impurities.

Embodiment 2

[0042]The hydrolyzate prepared in Example 1 and corn bran were mixed in a weight ratio of 1:9, presoaked for 10 minutes, and the operations of step (2) and step (3) of Example 1 were repeated.

[0043] After testing, the solid content of the hydrolyzate is 17.1%, and the main components are as follows:

[0044] 25.03% salt, 20.92% glucose, 31.79% xylose, 19.96% arabinose, and the remaining impurities.

[0045] After cyclic hydrolysis, the solid content is nearly doubled, and the proportion of sugar components is basically unchanged, which saves the consumption of sulfuric acid and energy consumption.

Embodiment 3

[0047] The special equipment for the above-mentioned continuous hydrolysis method of corn bran, such as figure 1 As shown, it includes a material supply device, a mixing device, a heating device, a hydrolysis reactor, a cooling device, and a pulp and slag separation device. The feed port is connected, the discharge port of the heating device is connected with the feed port of the hydrolysis reactor, the discharge port of the hydrolysis reactor is connected with the feed port of the cooling device, the discharge port of the cooling device is connected with the pulp and slag separation device The feed port of the pulp-slag separation device is connected with the feed port of the slurry discharge pipe and the mixing device respectively.

[0048] The above-mentioned material supply device includes an acid liquid storage tank 1, a flow meter 3, a belt feeder 4, and an impact type bulk solid flow meter 5, and the liquid feed port of the acid liquid storage tank 1 and the impact type...

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Abstract

The invention relates to a method and device for continuously hydrolyzing corn brans, belonging to the technical field of corn deep processing. The method comprises the following steps: (1) mixing the corn brans with hydrolytic acid, and pre-leaching for 5-10 minutes; (2) heating the material mixed and pre-leached in the step (1) to 115-125 DEG C, and hydrolyzing for 2.5-3.5 hours to obtain hydrolyzate; (3) cooling the hydrolyzate prepared in the step (2), and then separating the hydrolyzate from residues; and (4) when the component content in the hydrolyzate separated in the step (3) meets the requirement, exporting the hydrolyzate separated in the step (3), and carrying out sugar separation; when the component content in the hydrolyzate separated in the step (3) is lower than the required content, leading the hydrolyzate to enter the step (1) to mix with the corn brans, pre-leaching for 5-10 minutes, and recycling. By the method and equipment in the invention, the continuous hydrolysis of the corn brans is achieved, the yield equipment with the same scale has the advantages of low investment, high production efficiency and low energy consumption and is convenient for automatic operation, and the quality of the hydrolyzate is stable.

Description

technical field [0001] The invention relates to a method and equipment for continuous hydrolysis of corn husks, belonging to the technical field of corn deep processing. Background technique [0002] Corn bran is a by-product of corn starch production, and its output generally reaches 12.5% ​​of the total corn. The value of the product is low, and it is mainly sold as feed raw materials. Corn bran is rich in cellulose and hemicellulose, and various sugars can be obtained after hydrolysis with acid as a catalyst, including six-carbon sugar and five-carbon sugar, of which xylose is 30-35%, arabinose is about 20-23%, Glucose is 20-26%, so it can be used as a raw material for the production of xylose and arabinose. [0003] Xylose is a very good functional food additive, especially after further hydrogenation into xylitol, it has a wider range of uses. Arabinose, like xylose, is a five-carbon sugar with a sweetness similar to sucrose. Arabinose is an important pharmaceutical i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C13K13/00C13K1/02
Inventor 赵玉斌王新增李法田王成田
Owner SHANDONG LUZHOU FOOD GROUP
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