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Method for treating gulonic acid mash

A technology of cologne mash and gulonic acid, which is applied in the field of treating cologne mash, can solve the problems of reducing the service life of the ionizing resin, high requirements for diaphragm sealing, inability to withstand high temperature, etc. Guaranteed quality and compact structure

Pending Publication Date: 2022-04-01
上海科琅膜科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (1) Regularly add chemical flocculation, and regularly remove and clean the plate and frame, the labor intensity of the workers is high, and the working environment is poor;
[0007] (2) A small amount of solids will remain in the supernatant after plate and frame filtration, which will have a great impact on the subsequent separation process, reduce the work efficiency of separation and the service life of the resin, and there is still a certain amount of soluble protein in the supernatant. It will be precipitated with the decrease of pH, which will affect the working efficiency of subsequent process separation
[0010] (1) The flat membrane ultrafiltration system occupies a large space, and the membrane modules and some accessories cannot withstand high temperatures, strong acids, strong alkalis, strong oxidants, and equipment regeneration is not complete, which affects the operating efficiency of the equipment;
[0011] (2) The sealing requirements of the diaphragm are high, and material leakage is often prone to affect the stability of the clear liquid quality;
[0012] (3) When the liquid flow state is bad, it is easy to cause the concentration polarization to be more serious;
[0013] (4) The silicone clear liquid tube is seriously aging and needs to be replaced regularly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0036] Take 400kg of gulong acid mash, in which the content of sodium gulongate is 110g / L, and pretreat through a 100μm scraper filter to remove larger solid particles and part of the protein to obtain pretreatment liquid I; pass pretreatment liquid I into the tube In the type ultrafiltration ceramic membrane solid-liquid separation equipment, concentrate 20 times, add top wash water to obtain 480kg of sodium guronate ultrafiltrate; wherein the pore diameter of the ceramic membrane membrane tube is 50nm, the average clear liquid flow rate is 130.82LMH, and gulonate The yield of sodium is 99.81%;

example 2

[0038] Take 400kg of gulong acid mash, wherein the content of sodium gulongate is 115g / L, and pretreat through a 100μm scraper filter to remove larger solid particles and part of the protein to obtain pretreatment liquid I; pass pretreatment liquid I into the tube In the type ultrafiltration ceramic membrane solid-liquid separation equipment, concentrate 20 times, add top washing water to obtain 480kg of sodium guronate ultrafiltrate; wherein the pore diameter of the ceramic membrane membrane tube is 30nm, the average clear liquid flow rate is 110.82LMH, and gulongate The yield of sodium is 99.83%;

example 3

[0040] Take 300kg gulong acid mash, wherein the content of sodium gulongate is 108g / L, and pretreat it through a 100μm scraper filter to remove larger solid particles and part of the protein to obtain pretreatment liquid I; pass the pretreatment liquid I into the pipe In the type ultrafiltration ceramic membrane solid-liquid separation equipment, concentrate 15 times, add top wash water to obtain 380kg of sodium guronate ultrafiltrate; wherein the pore diameter of the ceramic membrane membrane tube is 10nm, the average clear liquid flow rate is 80.65LMH, and gulonate The yield of sodium is 99.23%;

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PUM

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Abstract

The invention discloses a method for treating gulonic acid mash, relates to solid-liquid separation in the gulonic acid mash, and provides a treatment method which is simple in process, good in separation effect, high in product yield and simple in equipment regeneration. The method comprises the following steps: S1, pretreating gulonic acid mash through a scraper filter to remove large solid particles and part of protein to obtain a pretreatment solution I; s2, the pretreatment liquid enters a tubular ceramic membrane ultrafiltration system for solid-liquid separation, mycelia, suspended solids, colloids, insoluble rhizoma bletillae, part of soluble macromolecular protein and other impurities are removed, and clear and transparent sodium gulonate ultrafiltration clear liquid is obtained; and S3, the water flux is completely recovered after the separation equipment finishes running and is chemically cleaned. The method can improve the product yield, improve the quality of the clear liquid, ensure the quality of the ultrafiltration clear liquid, and is less in pollution, simple to operate and simple in regeneration of separation equipment.

Description

technical field [0001] The invention relates to the technical field of chemical separation, in particular to a method for processing cologne mash. Background technique [0002] Gulonic acid is an important intermediate raw material in the synthesis of vitamin C. It has a huge social demand, and the fermentation method has the advantages of mild conditions and large acid production. The fermentation method has rapidly gained popularity in the industry. develop. The production of gulonic acid by fermentation can be divided into solid-liquid separation of gulonic acid mash (removal of solid impurities such as hyphae, insoluble proteins, colloids, and soluble macromolecular proteins), transformation (continuous separation, sodium gulonic acid is converted into gulonic acid), and finished products (removal of impurities, concentration to obtain the product gulong acid) three major steps. However, the solid-liquid separation of gulong acid mash is a difficult problem in the gulo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C51/42C07C51/47C07C59/105
Inventor 孙威广张峰廖丽芳刘旭红
Owner 上海科琅膜科技有限公司