Process for preparing glutamic acid crystallization

A glutamic acid and crystallization technology, which is applied in the field of glutamic acid crystallization, can solve the problems of packaging and transportation difficulties, non-continuous operation, uneven particles, etc., solve the problem of sewage discharge, have a good color and sense of the finished product, and create economical value effect

Active Publication Date: 2008-10-29
CHANGCHUN DACHENG INDAL GROUP
View PDF3 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The specific extraction methods can be divided into intermittent isoelectric method and continuous isoelectric method. The advantage of intermittent isoelectric method is that the process is mature and the crystal particles are relatively uniform. The disadvantage is that it cannot be operated continuously and the efficiency is low; , each level of crystallization tank is set with a fixed isoelectric pH value, which is easy to control, but the disadvantage is that the particles are not uniform; in the link of reducing the pH value of the crystallization tank and adding sulfuric acid, the traditional process uses directly connecting the sulfur

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Process for preparing glutamic acid crystallization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1 produces glutamic acid crystallization by glutamic acid fermented liquid

[0042] The production of glutamic acid in this embodiment is according to the attached figure 1 The process flow shown is carried out.

[0043] 1. Operation process

[0044] (1) Glutamic acid fermentation broth 500m 3 , wherein the glutamic acid content is 14g / 100ml, and the pH value is 7.48. With sulfuric acid (concentration 98%) its pH value is adjusted to 5.80, through inorganic ceramic membrane filtration, used ceramic membrane is the K99BW type product that French Orelis produces, and filter condition is: fermentation liquid temperature 70 ℃, membrane inlet pressure is 3~ 3.5kg, outlet pressure 7.0kg. After filtration, the clarified fermentation broth and bacteria were obtained, of which the clear liquid was 487m 3 . The obtained wet cells are sent to the by-product workshop for drying, and after drying, they become cell proteins.

[0045] (2) Concentrate the clarified ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a preparation method of glutamic acid. The method comprises filtering glutamic acid fermenting liquor via a ceramic membrane for removing thallus to obtain clear glutamic acid fermenting liquor, and performing gradient cooling and crystallizing in a crystallization tank by employing intermittent-continuous isoelectric point method while reducing the pH value of the fermenting liquor in the crystallization tank by adding sulfuric acid and employing shell and tube porous sprinkling method, wherein the feed liquor is continuously discharged to a lower stage tank using overflow on tank, and two thirds of the feed liquor of the lower stage crystallizing tank comes from an upper stage crystallization tank via overflow, and one third of the feed liquor of the lower stage crystallizing tank is added with concentrated solution. The glutamic acid crystal obtained by the preparation method has alpha type crystal.

Description

technical field [0001] The invention relates to a method for producing glutamic acid crystals. Specifically, the invention relates to a method for preparing glutamic acid crystals by isoelectric point crystallization when glutamic acid is produced by fermentation. Background technique [0002] Glutamic acid is mainly used in the production of monosodium glutamate. The most widely used method for the production of glutamic acid at home and abroad is the fermentation method. There are many techniques for extracting glutamic acid from the fermentation broth. The main methods are: isoelectric extraction of glutamic acid Amino acid, ion exchange method to extract glutamic acid, zinc salt method to extract glutamic acid, hydrochloride method to extract glutamic acid or electrodialysis method to extract glutamic acid, etc. [0003] Among them, the extraction of glutamic acid by the isoelectric method utilizes the following properties of glutamic acid: at the pH of the isoelectric p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C07C229/24C07C227/42C07C227/40
CPCC07C227/42C12P13/14
Inventor 王德辉贾冬舒
Owner CHANGCHUN DACHENG INDAL GROUP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap