Method for purification treatment of sucralose water crystallization mother liquor

A technology of sucralose and crystallization mother liquor, which is applied in the direction of chemical instruments and methods, sugar derivatives, sugar derivatives, etc., can solve the problems of low yield, low purity of crude sucralose, and difficulty in industrial application, and achieve improvement Purity, reducing the amount of discharged waste water, and reducing the pressure of waste water treatment

Active Publication Date: 2017-05-17
TECHNO (FUJIAN) FOOD INGREDIENTS CO LTD
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a method for purifying the sucralose water crystallization mother liquor, so as to solve the problem of the low purity and low yield of the sucralose crude product during the recycling of the sucralose water crystallization mother liquor. High, difficult industrial application and other issues

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  • Method for purification treatment of sucralose water crystallization mother liquor

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Embodiment 1

[0029] A kind of purification treatment method of the sucralose water crystallization mother liquor of the present embodiment, such as figure 1 As shown, the steps are as follows:

[0030] (1) Raw material liquid extraction and impurity removal

[0031] (1-1) The purity of sucralose in the water crystallization mother liquor is 92.4%. After the mother liquor is diluted with water, a raw material solution with a concentration of 22% is obtained; 660L of ethyl acetate is added to the 1500L raw material solution for one-time extraction and impurity removal, and the mixture is stirred for 30 minutes. Stand still for 60min to obtain primary extraction sugar water layer 1450L and primary extraction organic layer 710L; wherein, primary extraction organic layer is processed in the following step (3);

[0032] (1-2) Add 1800L cyclohexane to the above-mentioned 1450L primary extraction sugar water layer for secondary extraction, stir for 30 minutes, and let it stand for 30 minutes to r...

Embodiment 2

[0040] A kind of purification treatment method of the sucralose water crystallization mother liquor of the present embodiment, such asfigure 1 As shown, the steps are as follows:

[0041] (1) Raw material liquid extraction and impurity removal

[0042] (1-1) The purity of sucralose in the water crystallization mother liquor is 93.2%. After the mother liquor is diluted with water, a raw material solution with a concentration of 17% is obtained; 510L of butyl acetate is added to the 1500L raw material solution for one extraction and removal of impurities, and the mixture is stirred for 30 minutes. Stand still for 60min to obtain primary extraction sugar water layer 1450L and primary extraction organic layer 560L; wherein, primary extraction organic layer is processed in the following step (3);

[0043] (1-2) Add 1500L toluene to the above-mentioned 1450L primary extraction sugar water layer for secondary extraction, stir for 30min, and let stand for 30min to remove the organic s...

Embodiment 3

[0051] A kind of purification treatment method of the sucralose water crystallization mother liquor of the present embodiment, such as figure 1 As shown, the steps are as follows:

[0052] (1) Raw material liquid extraction and impurity removal

[0053] (1-1) The purity of sucralose in the water crystallization mother liquor is 92.0%. After the mother liquor is diluted with water, a raw material solution with a concentration of 25% is obtained; 563L of n-butanol is added to the 1500L raw material solution for one extraction and removal of impurities, and stirred for 30min. Stand still for 60min to obtain the first extraction sugar water layer 1450L and the first extraction organic layer 613L; wherein, the first extraction organic layer is processed in the following step (3);

[0054] (1-2) Add 1800L carbon tetrachloride to the above-mentioned 1450L primary extraction sugar water layer for secondary extraction, stir for 30min, and let it stand for 30min to remove the organic s...

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Abstract

The invention discloses a method for purification treatment of sucralose water crystallization mother liquor. According to the method, not only can residues of an impurity removing solvent in a sugar water layer be reduced, but also removes low-polarity and high-polarity impurities in the sucralose water crystallization mother liquor can be removed by virtue of stepwise extraction, so that the purity of a sucralose crude product obtained after impurity removal is greatly improved; and meanwhile, according to the technological process of the purification treatment of the method disclosed by the invention, the recovery rate of sucralose can be effectively increased, and losses and wastewater discharge amount can be reduced, and the technological process is suitable for industrial actual production.

Description

technical field [0001] The invention relates to the technical field of chemical separation, in particular to a method for purifying sucralose water crystallization mother liquor. Background technique [0002] Sucralose, also known as sucralose, or 4,1,6,-trichloro-4,1,6,-trideoxygalactose, its sweetness can reach 600 times that of sucrose, and it has no energy and high sweetness , pure sweetness, high safety and other characteristics, it is one of the best functional sweeteners at present. The preparation of sucralose is based on sucrose as raw material, through acylation reaction and chlorination reaction to obtain the intermediate sucralose-6-acetate, which is deacetylated in the methanol / sodium methoxide system after multiple purifications The crude product of sucralose is obtained, and the crude product of sucralose is recrystallized to obtain refined sucralose. At present, the crystallization method of sucralose in industrial production mainly uses water as the solven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H5/02C07H1/06
CPCC07H1/06C07H5/02
Inventor 罗华东崔灿赖道建池雪珍
Owner TECHNO (FUJIAN) FOOD INGREDIENTS CO LTD
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