Multilevel processing method for regenerating acid base from glutamic acid isoelectric mother liquor

A treatment method, glutamic acid technology, applied in electrodialysis, food preparation, food science, etc., to achieve the effect of improving current efficiency, increasing concentration, and alleviating H+ leakage

Active Publication Date: 2011-07-20
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The object of the present invention is to overcome the defects in the existing method for treating glutamic acid and other electric mother liquors, the

Method used

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  • Multilevel processing method for regenerating acid base from glutamic acid isoelectric mother liquor
  • Multilevel processing method for regenerating acid base from glutamic acid isoelectric mother liquor
  • Multilevel processing method for regenerating acid base from glutamic acid isoelectric mother liquor

Examples

Experimental program
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Effect test

Embodiment 1

[0075] The bipolar membrane electrodialysis process for regenerating acid-base from glutamic acid isoelectric mother liquor is divided into three stages, using three independently operated three-chamber bipolar membrane electrodialyzers, each as a first stage, see Figure 6 . Identical to every three-compartment bipolar membrane electrodialyzer, see Figure 4 . The direction of liquid flow in adjacent compartments is co-current. 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 4 ) Repeat for 5 pairs. Each set is equipped with a pair of electrodes, a titanium electrode coated with ruthenium is used as the anode plate, and a stainless steel electrode is used as the cathode plate. Both the partition and the net are polyprop...

Embodiment 2

[0081] The bipolar membrane electrodialysis process for regenerating acid-base from glutamic acid isoelectric mother liquor is divided into three stages, using three independently operated three-chamber bipolar membrane electrodialyzers, each as a first stage, see Figure 6 . The three-chamber bipolar membrane electrodialyzer is the same as in Example 1.

[0082] See image 3 .

[0083] Bacteria removal and protein removal: Filtrate the mother liquid of glutamic acid and other electricity through the 0.2μm microfiltration membrane and 3K ultrafiltration membrane module of Tianjin Motianmo Engineering Technology Co., Ltd. to obtain about 6 liters of clear liquid containing 34g / L ammonium chloride , 17g / L glutamic acid.

[0084] The salt chamber of the first-stage electrodialyzer is fed with 5.8 L of electrolytic mother liquid such as glutamic acid that has been sterilized and protein-removed, and the acid chamber is fed with the second hydrochloric acid concentration of 1.8 ...

Embodiment 3

[0089] The bipolar membrane electrodialysis process for regenerating acid-base from glutamic acid isoelectric mother liquor is divided into three stages, using three independently operated three-chamber bipolar membrane electrodialyzers, each as a first stage, see Figure 8 . Bipolar membrane electrodialyzer is the same as embodiment 1.

[0090] See image 3 .

[0091] Bacteria removal and protein removal: Filtrate the mother liquid of glutamic acid and other electricity through the 0.2μm microfiltration membrane and 10K ultrafiltration membrane module of Tianjin Motianmo Engineering Technology Co., Ltd. to obtain about 6 liters of clear liquid, containing 51g / L ammonium nitrate, 19g / L glutamic acid.

[0092] Concentrating the isoelectric mother liquor: heating and concentrating the clear liquid of the above-mentioned glutamic acid isoelectric mother liquor by 2 times.

[0093] Decalcification of magnesium ions: Add 0.05 mol / L oxalic acid to the above-mentioned concentrate...

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Abstract

The invention relates to a multilevel processing method for regenerating acid base from glutamic acid isoelectric mother liquor. In the method, a multilevel bipolar membrane electroosmosis method is adopted; the flow direction of salt room liquid and acid room liquid in a bipolar membrane electrodialyzer is changed; and regenerating ammonium sulfate, ammonium chloride or ammonium nitrate in the glutamic acid isoelectric mother liquor comprising the ammonium sulfate, the ammonium chloride or the ammonium nitrate into corresponding sulfuric acid, hydrochloric acid or nitric acid and ammonia (NH3). By the multilevel processing method, concentration difference of inorganic acid radical ions between the acid room and the salt room is totally reduced; the migration rate of the inorganic acid radical is increased by 29 percent; migration energy consumption is reduced by 24 percent; H<+> leakage from the acid room to the salt room is remitted; and concentration of acid liquor recovered by theacid room is increased.

Description

technical field [0001] The invention belongs to the monosodium glutamate industry, in particular to a multistage treatment method for regenerating acid-base from glutamic acid and other electric mother liquors 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 annual output close to 2 million tons. 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 fermentation, use the isoelectric crystal...

Claims

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Application Information

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IPC IPC(8): A23L1/228B01D61/42A23L27/22
Inventor 丛威王倩杨鹏波石绍渊吴霞
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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