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Lysine acetate mother liquid recycling method

A technology of lysine acetate and lysine acetate, which is applied in the field of biopharmaceuticals, can solve problems such as waste of resources, easy oxidation and discoloration, and environmental pollution, and achieve the effects of reducing production costs, improving product quality stability, and saving resources

Inactive Publication Date: 2013-04-17
YICHANG SANXIA PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has high requirements on the production environment, it is easy to oxidize and change color, and the light transmittance is extremely unstable. Especially the mother liquor recovery technology is an insurmountable difficulty. The mother liquor contains a certain amount of by-products and pigments, and the recovered alcohol contains a large amount of Acetic acid and iron salts have not been recycled, but if they are discarded and not recycled, it will not only waste resources but also pollute the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of recovery processing method of lysine acetate mother liquor, comprises the following steps:

[0020] 1) Alcohol recovery: add 15% sodium hydroxide solution to 2 tons of lysine acetate mother liquor until the pH value of the mother liquor reaches 7.0, and add 160g of EDTA-2Na at the same time, and then distill the mother liquor, the distilled Alcohol detection and recovery, the distilled tail liquid is ready for use;

[0021] 2) Lysine recovery: Add drinking water to the tail liquid in step 1) to dilute it until the volume concentration of lysine acetate is 7%, adjust the pH value to 3.5, and use 732H resin to selectively adsorb lysine in the tail liquid After acidification, desorption, decolorization, concentration and refining are carried out to obtain lysine acetate.

[0022] The desorption described in step 2) uses 2.1N ammonia water, collects the desorption liquid, then carries out the ammonia catchment concentration on the desorption liquid, and adjusts t...

Embodiment 2

[0026] A kind of recovery processing method of lysine acetate mother liquor, comprises the following steps:

[0027] 1) Alcohol recovery: add 12% sodium hydroxide solution to 1 ton of lysine acetate mother liquor until the pH value of the mother liquor reaches 8.0, and add 50g of EDTA-2Na at the same time, then distill the mother liquor, and the distilled Alcohol detection and recovery, the distilled tail liquid is ready for use;

[0028] 2) Lysine recovery: add drinking water to the tail liquid in step 1) to dilute until the volume concentration of lysine acetate is about 7%, adjust the pH value to 3.0, and use 732H resin to selectively adsorb lysine in the tail liquid After desorption, decolorization, concentration and refining are carried out to obtain lysine acetate.

[0029] The desorption described in step 2) uses 1.9N ammonia water, collects the desorption liquid, then carries out ammonia catchment concentration on the desorption liquid, and adjusts the pH value of the...

Embodiment 3

[0033] A kind of recovery processing method of lysine acetate mother liquor, comprises the following steps:

[0034] 1) Alcohol recovery: add 18% sodium hydroxide solution to 2 tons of lysine acetate mother liquor until the pH value of the mother liquor reaches 7.0-8.0, and add 200g of EDTA-2Na at the same time, and then distill the mother liquor. The recovered alcohol is detected and recovered, and the distilled tail liquid is used for later use;

[0035] 2) Lysine recovery: Add drinking water to the tail liquid in step 1) to dilute until the volume concentration of lysine acetate is about 7%, adjust the pH value to 4.0, and use 732H resin to selectively adsorb lysine in the tail liquid After desorption, decolorization, concentration and refining are carried out to obtain lysine acetate.

[0036] The desorption described in step 2) uses 2.0N ammonia water, collects the desorption liquid, then carries out the ammonia catchment concentration on the desorption liquid, and adjus...

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PUM

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Abstract

A lysine acetate mother liquid recycling method comprises the following steps of: 1) alcohol recycle: adding sodium hydroxide and EDTA-2Na (ethylenediamine tetraacetic acid disodium salt) into a lysine acetate mother liquid till the pH value of the mother liquid is 7.0-8.0, distilling the mother liquid, detecting and recycling the distilled alcohol, and storing the distillation tail liquid for use; and 2) lysine recycle: adding drinking water into the tail liquid in the step 1 for diluting the tail liquid until the concentration reaches 7%, regulating the pH value to 3.0-4.0, selectively adsorbing lysine in the tail liquid by using resin, desorbing, decolorizing, concentrating, and refining the tail liquid to obtain the lysine acetate. By the lysine acetate mother liquid recycling method, through treatment of the lysine acetate mother liquid, qualified alcohol and lysine acetate finished products are recycled, so that the production cost is effectively reduced, resources are saved and the production efficiency is improved.

Description

technical field [0001] The invention belongs to the field of biopharmaceuticals and relates to a method for recovering and treating lysine acetate mother liquor. Background technique [0002] The synthesis and production technology of lysine acetate is a difficult problem in the pharmaceutical manufacturing industry. It has high requirements on the production environment, it is easy to oxidize and change color, and the light transmittance is extremely unstable. Especially the mother liquor recovery technology is an insurmountable difficulty. The mother liquor contains a certain amount of by-products and pigments, and the recovered alcohol contains a large amount of Acetic acid and iron salts have not been recycled, but if they are discarded and not recycled, it will not only waste resources but also pollute the environment. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for recovering lysine acetate mo...

Claims

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Application Information

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IPC IPC(8): C07C31/08C07C29/80C07C229/26C07C227/40
Inventor 高兆兵刘军
Owner YICHANG SANXIA PHARMA
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