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A sodium glutamate mother liquor decolorization and purification method based on membrane technology

A purification method and membrane technology, applied in the field of decolorization and purification of monosodium glutamate mother liquor, can solve the problems of waste of resources, production cost, long production process, and large consumption of activated carbon, etc., and achieve the effects of extending the regeneration cycle, reducing the dosage, and increasing the yield

Active Publication Date: 2008-08-27
SANDA FILM SCI & TECH XIAMEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to provide a high efficiency, simple production process and high production cost for the problems of low monosodium glutamate purity, long production process flow, large amount of activated carbon consumption, serious waste of resources and high production cost in the existing monosodium glutamate crystallization process. Decolorization and purification method of monosodium glutamate mother liquor based on membrane separation and purification production process with high purity and suitable for industrial production

Method used

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  • A sodium glutamate mother liquor decolorization and purification method based on membrane technology

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Embodiment 1

[0027] The mixed crystallization mother liquor in the production process of monosodium glutamate with a concentration of 38% to 39% in a factory is pumped with a high-pressure pump into a roll-type nanofiltration membrane module with a molecular weight cut-off of 300 (the membrane material is polyethersulfone membrane) for filtration and purification, and the crystallization mother liquor is removed A large number of impurities and metal ions such as calcium and magnesium in the liquid are separated into the nanofiltration decolorization dialyzate of monosodium glutamate and the nanofiltration concentrated mother liquor; the nanofiltration dialysate is further processed by granular activated carbon adsorption to obtain raw materials for the production of high-purity monosodium glutamate, and enters the next process Production of high-purity monosodium glutamate (a purity of more than 99%); the nanofiltration concentrated mother liquor is refluxed and mixed into the mixed crystal...

Embodiment 2

[0046] The mixed crystallization mother liquor in the production process of monosodium glutamate with a concentration of 30% to 31% in a factory is pumped by a high-pressure pump into a tubular nanofiltration membrane module (membrane material is a composite membrane) with a molecular weight cut-off of 350 to filter and purify, to remove the presence in the crystallization mother liquor. A large number of impurities and metal ions such as calcium and magnesium are separated into nanofiltration decolorization dialyzate of monosodium glutamate and nanofiltration concentrated mother liquor; nanofiltration dialysate is further adsorbed by granular activated carbon to obtain raw materials for producing high-purity monosodium glutamate, and enters the next process to produce high-quality monosodium glutamate. Purity monosodium glutamate (purity is more than 99%); the nanofiltration concentrated mother liquor is refluxed and mixed into the mixed crystallization mother liquor for recycl...

Embodiment 3

[0065] The mixed crystallization mother liquor in the production process of monosodium glutamate with a concentration of 38% to 39% in a factory is pumped by a high-pressure pump into a roll-type nanofiltration membrane module with a molecular weight cut-off of 250 (membrane material is cellulose acetate membrane) for filtration and purification, and the crystallization mother liquor is removed. A large number of impurities and metal ions such as calcium and magnesium are separated into the nanofiltration decolorization dialyzate of monosodium glutamate and nanofiltration concentrated mother liquor; the nanofiltration dialysate is further adsorbed by granular activated carbon to obtain raw materials for the production of high-purity monosodium glutamate, which enters the next production process High-purity monosodium glutamate (a purity of more than 99%); the nanofiltration concentrated mother liquor is refluxed and mixed into the mixed crystallization mother liquor for recyclin...

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Abstract

A kind of glutavene mother liquid discoloration purification method base on membrane technique, relate to a kind of discoloration purification method for glutavene mother liquid, especially a kind of discoloration method based on membrane filter separate technique .The invention provide a kind of efficient easy product technique ,high purification product, suit to industry product method that base on membrane separate purification product technique for glutavene mother liquid discoloration .The mix crystal mother liquid in the product process pass through nana-filter membrane to filter and purification, get rid of mass impurity and calcium, magnesium and other metal ion that exist in crystal mother liquid, separate to obtain nana-filter dialysis liquid of glutavene and nana-filter concentration mother liquid; after nana-filter dialysis liquid pass through adsorption treatment particle activated char to obtain the material that use to produce high purification glutavene , the material enter into the next procedure to produce high purification glutavene ; the nana-filter concentration mother liquid flow into mix crystal mother liquid to utilization circulation.

Description

technical field [0001] The invention relates to a method for decolorizing and purifying monosodium glutamate mother liquor, in particular to a method for decolorizing and purifying monosodium glutamate mother liquor based on membrane filtration separation technology. Background technique [0002] The traditional crystallization process of monosodium glutamate production is: glutamic acid (glutamic acid crystal) is neutralized by adding soda ash, decolorized by powder carbon, separated from plate and frame, decolorized by granular activated carbon, evaporated, crystallized and dried to obtain monosodium glutamate, the mother liquor produced during the crystallization process, after Powdered charcoal and granular charcoal are filtered and crystallized again. [0003] There are following main problems in this traditional production process: [0004] 1. During the production, after the crystallization mother liquor has been recycled for many times, the crystallization mother li...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23L1/228A23L27/22
Inventor 方富林蓝伟光饶金珠洪昱斌
Owner SANDA FILM SCI & TECH XIAMEN
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