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Treatment method of β-alanine by-product

A treatment method and by-product technology, applied in the chemical field, can solve problems such as wasting resources and increasing environmental treatment costs, and achieve the effects of preventing decomposition, shortening high-temperature residence time, and improving selectivity and yield

Active Publication Date: 2020-11-03
ANHUI ANLITAI BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, a large amount of by-product 3,3'-iminodipropionic acid (IDPA for short) will be produced when producing β-alanine through acrylonitrile ammonification reaction or acrylic acid ammoniation reaction. For this part of by-product, The usual treatment method is incineration, which not only increases the cost of environmental governance, but also wastes resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Example 1: Treatment of β-alanine by-products

[0009] First weigh 85.6g of 40% 3,3'-iminodipropionic acid sodium salt aqueous solution and 115g of 30% ammonia water for later use, adjust the reaction pressure of the microchannel flow reactor to 900 Kpa, and the reaction temperature to 200°C, and then Ammonia water with a volume flow rate of 8ml / min and 3,3'-iminodipropionic acid sodium salt solution with a volume flow rate of 7ml / min were injected into the microchannel flow reactor (manufactured by Corning Corporation, G1-A type) through a metering pump ), after continuous reaction and flash deamination, 160g of β-alanine sodium reaction solution was obtained, and then concentrated under reduced pressure at 50-80°C to reduce the moisture content of the reaction solution to 50%, and then treated by spray drying to obtain 37.3 g of solid product.

[0010] The product was sampled and detected by HPLC, and the results were as follows: 3,3'-iminodipropionate sodium was not...

Embodiment 2

[0011] Example 2: Treatment of β-alanine by-products

[0012] According to the treatment method of Example 1, the difference is that the reaction temperature is 150°C.

[0013] 37.2g of solid product was obtained through the reaction, and the product was sampled and detected by HPLC. The results were as follows: the content of sodium 3,3'-iminodipropionate was 20.6%, the content of sodium β-alanine was 79.4%, and the conversion rate was 77.6%. The rate is 78.4%.

Embodiment 3

[0014] Example 3: Treatment of β-alanine by-products

[0015] According to the processing method of Example 1, the difference is that the reaction temperature is 180° C., and the reaction pressure is 1000 Kpa.

[0016] 37.1g of solid product was obtained through the reaction, and the product was sampled and detected by HPLC. The results were as follows: 3,3'-iminodipropionate sodium content 0.4%, β-alanine sodium content 99.6%, conversion rate 99.6%, yield 98.1%.

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Abstract

The invention belongs to the technical field of chemistry, and particularly relates to a treatment method of β-alanine by-products; first, the production waste liquid and ammonia water containing 3,3-iminodipropionate sodium are passed into a microchannel reactor respectively, and the Continuous reaction at 180-210°C for 10-30 minutes, followed by deamination, dehydration and drying treatment to obtain sodium β-alanine; the method provided by the invention has low treatment cost and high resource utilization rate.

Description

technical field [0001] The invention belongs to the technical field of chemistry, and in particular relates to a treatment method for by-products of beta-alanine. Background technique [0002] β-alanine (β-alanine), that is, 3-aminopropanoic acid (3-aminopropanoic), is the only β-type non-protein amino acid that exists in nature. As an important biochemical raw material, β-alanine is widely used in the fields of medicine, feed and food. [0003] In the prior art, a large amount of by-product 3,3'-iminodipropionic acid (IDPA for short) will be produced when producing β-alanine through acrylonitrile ammonification reaction or acrylic acid ammoniation reaction. For this part of by-product, The usual treatment method is incineration, which not only increases the cost of environmental governance, but also wastes resources. Contents of the invention [0004] The purpose of the present invention is to provide a treatment method of β-alanine by-product, which has low treatment c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C227/18C07C229/08
CPCC07C227/18C07C229/08C07C229/16
Inventor 马铭泽马云峰
Owner ANHUI ANLITAI BIOTECH CO LTD
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