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Processing method of beta-alanine by-product

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

Active Publication Date: 2018-08-10
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 by acrylonitrile ammonification or acrylic acid ammoniation. For this part of by-products, usually The 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 900Kpa, and the reaction temperature to 200°C, and then measure The pump injects ammoniacal liquor with a volume flow rate of 8ml / min and 3,3-iminodipropionic acid sodium salt solution with a volume flow rate of 7ml / min into the microchannel flow reactor (produced by Corning, G1-A type) respectively, 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 37.3g of solid product.

[0010] The product was sampled and detected by HPLC, and the results were as follows: no sodium 3,3-iminodipropionate was detected; the conte...

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] Obtain 37.2g solid product by reaction, use HPLC to product sampling detection, the result is as follows: 3,3-iminodipropionate sodium content 20.6%, β-alanine sodium content 79.4%, conversion rate 77.6%, yield was 78.4%.

Embodiment 3

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

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

[0016] Obtain 37.1g solid product by reaction, use HPLC to product sampling detection, the result is as follows: 3,3-iminodipropionate sodium content 0.4%, β-alanine sodium content 99.6%, conversion rate 99.6%, yield is 98.1%.

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PUM

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Abstract

The invention belongs to the technical field of chemistry, and particularly relates to a processing method of a beta-alanine by-product. The method comprises the following steps of leading productionwaste liquid, which contains 3,3-sodium iminodipropionate, and ammonium hydroxide into a micro pipeline reactor firstly, reacting for 10-30min continuously at 180-210 DEG C, and then performing deamination, dehydration and drying treatment to obtain sodium beta-alanine. The method provided by the invention is low in processing cost and high in 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 by acrylonitrile ammonification or acrylic acid ammoniation. For this part of by-products, usually The only 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 cost and high res...

Claims

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Application Information

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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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