Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for treating isoelectric glutamic acid mother solution in monosodium glutamate production

A processing method and technology of glutamic acid, applied in the field of monosodium glutamate, can solve the problem of hydrogen leakage in bipolar membrane electrodialysis

Active Publication Date: 2011-06-22
INST OF PROCESS ENG CHINESE ACAD OF SCI
View PDF1 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to basically overcome the various defects of the existing methods for processing glutamic acid and other electric mother liquors, thereby providing a treatment method for glutamic acid and other electric mother liquors in the production of monosodium glutamate
[0009] The processing method of the present invention can solve the problem of hydrogen leakage occurring in bipolar membrane electrodialysis

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
  • Method for treating isoelectric glutamic acid mother solution in monosodium glutamate production
  • Method for treating isoelectric glutamic acid mother solution in monosodium glutamate production
  • Method for treating isoelectric glutamic acid mother solution in monosodium glutamate production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] The bipolar membrane electrodialyzer is a one-stage, three-chamber bipolar membrane electrodialyzer that operates independently, and the liquid flow direction in adjacent compartments adopts a parallel flow form. The area of ​​the ion exchange membrane is 210mm×62mm, using BP-1 type bipolar membrane, JAM-10 type anion exchange membrane and JCM-1 type cation exchange membrane. Bipolar membrane, anion exchange membrane, and cation exchange membrane form a three-compartment membrane stack structure (such as Figure 5 ) Repeat for 5 pairs. A titanium-coated ruthenium electrode is used as the anode plate, and a stainless steel electrode is used as the cathode plate. Both the partition and the net are polypropylene materials, the partition is a non-loop partition, and the partition is a woven mesh type.

[0093] See image 3 . Pass 4.8L of glutamic acid isoelectric mother liquor containing 42g / L ammonium sulfate and 18g / L glutamic acid from Shenyang Hongmei MSG Factory in...

Embodiment 2

[0096] Bipolar membrane electrodialyzer is the same as embodiment 1.

[0097] Pass 4.8L of glutamic acid isoelectric mother liquor containing 34g / L ammonium chloride and 17g / L glutamic acid into the salt chamber; the initial liquid of the acid chamber is the filtrate of 1.0L glutamic acid fermentation broth, containing glutamic acid About 104g / L, the initial liquid in the alkali chamber is 1L 0.05mol / L sodium hydroxide solution, and the liquid in both pole chambers is 1L 0.25mol / L sodium sulfate solution.

[0098] Control current density 30mA / cm during operation 2 , the linear velocity of liquid flow in each compartment is 3cm / s, and the temperature of feed liquid in each compartment is 30°C. Air is passed into the material tank of the alkali chamber, and the regenerated ammonia is blown out with air, and the blowing volume is 1 liter / minute. Ammonia gas blown from the alkali chamber is passed into a stainless steel coil placed in a -60°C refrigerator. When the pH of the ac...

Embodiment 3

[0100] Bipolar membrane electrodialyzer is the same as embodiment 1.

[0101] Pass 4.8L of glutamic acid isoelectric mother liquor containing 51g / L ammonium nitrate and 19g / L glutamic acid into the salt chamber; the initial liquid of the acid chamber is 1.0L glutamic acid fermentation broth, containing about 105g / L glutamic acid . The initial liquid of the alkali chamber is 0.5L of ammonia water with a mass concentration of 0.5%, and the liquid of both pole chambers is 1L of 0.25mol / L sodium sulfate solution.

[0102] Control current density 30mA / cm during operation 2 , the linear velocity of liquid flow in each compartment is 3cm / s, and the temperature of feed liquid in each compartment is 30°C. When the pH of the acid chamber drops to 4.2, the acid chamber appears turbid (glutamic acid crystallization). At this time, the bipolar membrane electrodialysis operation is continued, and the feed liquid inlet and outlet of a 1-liter hydrocyclone are connected to the acid chamber....

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 relates to a method for treating isoelectric glutamic acid mother solution in monosodium glutamate production, which comprises the following steps of: introducing the isoelectric glutamic acid mother solution containing ammonium sulfate, ammonium chloride or ammonium nitrate into a salt chamber of a three-chamber bipolar membrane electrodialyzer or an 'acid-salt' two-chamber bipolarmembrane electrodialyzer by adopting a bipolar membrane electro-dialysis technology, wherein the solution containing the glutamic acid is used as initial solution of an acid chamber; and finally, obtaining inorganic salt removed isoelectric mother solution in the salt chamber, obtaining solution containing the glutamic acid and the regenerated sulfuric acid, hydrochloric acid or nitric acid in the acid chamber, and obtaining regenerated ammonia. The treatment method makes full use of the acidity and the alkalinity of the glutamic acid to reduce the H+ concentration of the acid chamber of the bipolar membrane electrodialyzer and relieve the H+ seepage from the acid chamber to the salt chamber, so that the regenerated acid can be recycled to an isoelectric crystallization step without beingconcentrated.

Description

technical field [0001] The invention belongs to the monosodium glutamate industry, in particular to a method for treating the mother liquor of glutamic acid and other electricity in the production of monosodium glutamate. Background technique [0002] Monosodium glutamate, scientific name monosodium glutamate (Monosodium Glutamate, referred to as MSG). Monosodium glutamate is an important food additive that can enrich and improve the flavor of food and is widely used in food and food processing industries. my country is a big producer of monosodium glutamate, with an output of about 1.35 million tons in 2005, accounting for more than 70% of the world's total output. MSG is refined from glutamic acid (called glutenic acid) extracted by fermentation. [0003] In my country, glutamic acid is mainly produced by fermentation of starch, and ammonia is continuously added during the fermentation process to maintain the pH of the fermentation broth at about 7. After the fermentati...

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): A23L1/228B01D61/48A23L27/22
Inventor 丛威王倩杨鹏波杨晓丽吴霞石绍渊张勇
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com