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Crystallization technique in engineering of producing crystalline dextrose

A technology for crystallization of glucose and crystallization, applied in the field of glucose production technology, can solve the problems of long crystallization cycle, large amount of mother liquor, low utilization rate, low production yield, etc., and achieves improvement of quality and yield, saving manpower and material resources, and reducing production costs. Effect

Inactive Publication Date: 2006-12-06
SHANDONG XIWANG SUGAR
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] At present, most of the crystalline glucose sold in the market is not good in crystal form, unstable in nature, and prone to problems such as agglomeration, because domestic production of crystalline glucose generally adopts the method of cooling crystallization, and the crystallized glucose by this method is unstable in nature and has different crystal forms. rule, the two main disadvantages are:
[0005] ①The crystallization cycle is long, generally requires secondary crystallization, the crystallization time is about 70 hours, and the production efficiency is low
[0006] ②The production yield is low, and the utilization rate of the mother liquor is large and the utilization rate is small

Method used

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  • Crystallization technique in engineering of producing crystalline dextrose

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) The starch milk is liquefied, saccharified, filtered, decolorized and evaporated to a dry matter of 73%.

[0028] (2) The above-mentioned concentrated solution is poured into the flash tank for vacuum concentration and evaporation until the dry matter is 77.5%, and then circulated into the 260m 3 After 30 hours of pre-crystallization in the vertical evaporative crystallizer, 7m 3 Carry out crystallization in the primary crystallizer among the four-stage crystallizers. The remainder is recycled to the flash tank.

[0029] (3) After the pre-crystallization, the pre-crystallized crystal slurry is driven into the four-stage continuous crystallization tank (25m 3 ) crystallization, can increase the production of 56 tons of crystallized glucose per day.

Embodiment 2

[0031] (1) The starch milk is liquefied, saccharified, filtered, decolorized, evaporated and concentrated until the dry matter is 70%.

[0032] (2) The above-mentioned concentrated solution is poured into the flash tank for vacuum concentration and evaporation until the dry matter is 78%, and then circulated for 260m 3 After 25 hours of pre-crystallization in the vertical evaporative crystallizer, 8m 3 Carry out crystallization in the primary crystallizer among the four-stage crystallizers. The remainder is recycled to the flash tank.

[0033] (3) After the pre-crystallization, the pre-crystallized crystal slurry is driven into the four-stage continuous crystallization tank (25m 3 ) crystallization, can increase the production of 58 tons of crystalline glucose per day.

Embodiment 3

[0035] (1) The starch milk is liquefied, saccharified, filtered, decolorized and evaporated to a dry matter of 71%.

[0036] (2) The above-mentioned concentrated solution is poured into the flash tank for vacuum concentration and evaporation until the dry matter is 78%, and then circulated for 260m 3 After 20 hours of pre-crystallization in the vertical evaporative crystallizer, 6m 3 Crystallize in the primary crystallizer in the four-stage continuous crystallizer. The remainder is recycled to the flash tank.

[0037] (3) After the pre-crystallization, the pre-crystallized crystal slurry is driven into the four-stage continuous crystallization tank (25m 3 ) crystallization, can increase the production of 55 tons of crystalline glucose per day.

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Abstract

This invention discloses a method for producing crystallized glucose. The method comprises: (1) evaporating the glucose solution in an evaporator to obtain 70-75% glucose solution; (2) pumping into a flash pot, and lowering the temperature and pressure to reach oversaturation; (3) pumping into a vertical evaporation crystallization vessel, and precrystallizing. The precrystallization process can save the crystallization cycle by 50% (from 78 h to 40-60 h), save labor force, raise crystallized glucose yield and quality.

Description

Technical field: [0001] The invention belongs to a glucose production process in the field of comprehensive utilization of corn deep processing, and specifically relates to a crystallization process in the production process of crystallized glucose. Background technique: [0002] Corn deep processing is a field with broad development prospects. The products obtained from corn deep processing can be widely used in food, paper, textile, medicine, chemical industry and related industries. [0003] Starch sugar is one of the most important downstream products in the corn deep processing industry and is widely used in related industries. Starch sugar is produced with agricultural product corn as the main raw material through hydrolysis and transformation using biotechnology. There are many varieties of starch sugar. At present, there are 26 categories of products produced in China, most of which are used as sweeteners in the food processing industry. The production of starch su...

Claims

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Application Information

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IPC IPC(8): C13K1/10
Inventor 王勇王亮刘纪强李霞张庆生
Owner SHANDONG XIWANG SUGAR
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