Method of simultaneously producing crystallized sorbitol and daily chemical sorbitol

A technology of crystalline sorbitol and daily chemical grade, which is applied in the field of simultaneous production of crystalline sorbitol and daily chemical grade sorbitol, which can solve the problems of control of unfavorable process conditions, difficulty in guaranteeing product quality, fluctuation of separation effect, etc., and achieve reduction of electrical conductivity, The effect of improving product quality and simplifying the production process

Inactive Publication Date: 2015-12-23
CHENGDU LIANJIE MEMBRANE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process mainly improves the content of glucose by simulating moving bed chromatographic separation technology to prepare sorbitol products that meet the requirements. However, through actual production, it is found that the chromatographic separation technology process is more complicated, the operating procedures are cumbersome, and the cost is relatively high. Moreover, in industrial production, When using chromatographic separation technology for separation, acid, alkali, calcium chloride, sodium chloride and other chemical reagents are often used to transform, regenerate and clean the chromatographic separation resin used, which increases the discharge of three wastes and is not conducive to the environment. In addition, as the production proceeds, the effective separation medium calcium and sodium in the resin will continue to be lost. Therefore, the separation effect will fluctuate greatly with the continuous regeneration of the separation resin, and the product quality is not easy to guarantee, which is not conducive to Control of process conditions in production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1: A method for producing crystalline sorbitol and daily chemical grade sorbitol simultaneously, it comprises the following steps:

[0038] S1. Starch sizing: add 30°C water to the starch to sizing until the concentration of the starch milk is 15 degrees Baume, and adjust the pH value of the starch milk to 5 with alkali;

[0039] S2. Liquefaction: add the starch milk after step S1 into the high-temperature-resistant α-amylase, and pour it into a continuous liquefaction device for liquefaction. The number of times of liquefaction is two times, and the injection temperature for the first liquefaction is controlled to be 100°C. , the injection temperature of the second liquefaction is 130°C, the DE value of liquefaction to glucose is 13%, and the dry matter percentage concentration of the liquefaction liquid is 30%; Add 0.3L of high temperature resistant α-amylase with an enzyme activity of 20000u / ml to the starch meter;

[0040] S3. Saccharification: Cool down t...

Embodiment 2

[0048] Example 2: A method for producing crystalline sorbitol and daily chemical grade sorbitol simultaneously, it comprises the following steps:

[0049] S1. Starch sizing: add 40°C water to the starch to sizing until the concentration of the starch milk is 25 degrees Baume, and adjust the pH value of the starch milk to 6 with alkali;

[0050] S2. Liquefaction: add the starch milk after step S1 into the high temperature-resistant α-amylase, put it into a continuous liquefier for liquefaction, the number of times of liquefaction is two times, and control the injection temperature of the first liquefaction to 115°C , the injection temperature of the second liquefaction is 150°C, the DE value of liquefaction to glucose is 17%, and the dry matter percentage concentration of the liquefaction liquid is 35%; Add 0.5L of high temperature resistant α-amylase with an enzyme activity of 20000u / ml to the starch meter;

[0051] S3. Saccharification: Cool down the liquefaction liquid to...

Embodiment 3

[0059] Example 3: A method for producing crystalline sorbitol and daily chemical grade sorbitol simultaneously, it comprises the following steps:

[0060] S1. Starch sizing: add 33°C water to the starch to sizing until the concentration of the starch milk is 18 degrees Baume, and adjust the pH value of the starch milk to 5.5 with alkali;

[0061] S2. Liquefaction: add the starch milk after step S1 into the high-temperature resistant α-amylase, put it into a continuous liquefier for liquefaction, the number of times of liquefaction is two times, and control the injection temperature of the first liquefaction to 108°C , the injection temperature of the second liquefaction is 140°C, the DE value of liquefaction to glucose is 15%, and the dry matter percentage concentration of the liquefaction liquid is 32%; Add 0.4L of high temperature resistant α-amylase with an enzyme activity of 20000u / ml to the starch meter;

[0062] S3. Saccharification: Cool down the liquefied liquid to ...

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Abstract

The invention discloses a method of simultaneously producing crystallized sorbitol and daily chemical sorbitol. According to the method disclosed by the invention, the crystallized sorbitol and the daily chemical sorbitol are simultaneously obtained by taking starch as a raw material and through size mixing of the starch, liquefying, saccharifying, impurity removal, deacidification and desalination, evaporation and concentration, hydrogenation, sedimentation and decoloration, desalination, as well as washing, filtering and purifying. The method disclosed by the invention has the advantages of high efficiency, high raw material utilization rate, high additional value of products, short process flow, low production cost, low energy consumption, energy saving and water saving, and a prepared crystallized sorbitol product is high in purity and capable of meeting the requirements of applying to the field of industries, such as medicines, food and Vc; in the meantime, the obtained daily chemical sorbitol as a side product has good physical and chemical properties and can meet the requirements of preparing the daily chemical products, such as toothpaste, cosmetics and cigarettes.

Description

technical field [0001] The invention relates to a production method of sorbitol, in particular to a method for simultaneously producing crystalline sorbitol and daily chemical grade sorbitol. Background technique [0002] Sorbitol, also known as sorbitol, has a molecular formula of C 6 h 14 o 6 , with a molecular weight of 182.17, white hygroscopic powder or crystalline powder, flakes or granules or colorless transparent viscous liquid, odorless. Depending on the crystallization conditions, the melting point varies in the range of 88-102°C, and the relative density is about 1.49. It is easily soluble in water (1g is dissolved in about 0.45ml of water), slightly soluble in ethanol and acetic acid, and has a cool and sweet taste. It is 0.7 times that of sucrose, and its calorific value is similar to that of sucrose. [0003] Sorbitol can be divided into pharmaceutical grade, food grade, daily chemical grade and chemical industry grade according to different production proc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/18
Inventor 邱全国
Owner CHENGDU LIANJIE MEMBRANE TECH
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