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Purifying method of betaine hydrochloride

A purification method and betaine technology, which are applied in chemical instruments and methods, organic chemistry, cyanide reaction preparation, etc., can solve the problems of low yield and long reaction period, reduce burning residue, reduce energy consumption, improve The effect of comprehensive yield

Active Publication Date: 2018-04-24
山东省溯源绿色化工研究院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the above problems and overcome the deficiencies in the prior art, the present invention provides a method for purifying betaine hydrochloride with mild reaction conditions and short reaction cycle, which can effectively solve the problem of filtering and reacting alcohols under high temperature conditions. The problem of long cycle and low yield

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  • Purifying method of betaine hydrochloride

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0020] 1. Take 99.8g of 95% acetic acid aqueous solution, add 0.2g ammonium acetate to the acetic acid aqueous solution, and configure 100g of acetic acid-ammonium acetate mixed solution; take 100g of betaine hydrochloride crude product obtained by the calcium method, and prepare betaine hydrochloride Add the crude product to the acetic acid-ammonium acetate mixture and stir at room temperature; then filter to obtain the filtrate and filter cake; wash the filter cake once with 10 g of 98% acetic acid, and suction filter to obtain the refined product of betaine hydrochloride;

[0021] 2. Concentrate the filtrate by distillation to obtain a concentrated solution of the mixture of calcium sulfate, ammonium acetate and betaine hydrochloride, adjust the pH to neutral, add ethyl acetate solution, filter, put the filtrate into rest for one hour, and separate the liquid to obtain acetic acid Ethyl extract, distill and concentrate the ethyl acetate extract, filter, and wash the filter c...

Embodiment example 2

[0023] 1. Take 99.5g of 98% acetic acid aqueous solution, add 0.5g ammonium acetate to the acetic acid aqueous solution, and configure 100g of acetic acid-ammonium acetate mixed solution; take 300g of betaine hydrochloride crude product prepared by calcium method, and mix betaine hydrochloride Add the crude product to the acetic acid-ammonium acetate mixture and stir at room temperature; then filter to obtain the filtrate and filter cake; wash the filter cake once with 10 g of 98% acetic acid, and suction filter to obtain the refined product of betaine hydrochloride;

[0024] 2. Concentrate the filtrate by distillation to obtain a concentrated solution of the mixture of calcium sulfate, ammonium acetate and betaine hydrochloride, adjust the pH to neutral, add ethyl acetate solution, filter, put the filtrate into rest for one hour, and separate the liquid to obtain acetic acid Ethyl extract, distill and concentrate the ethyl acetate extract, filter, and wash the filter cake with...

Embodiment example 3

[0026] 1. Take 99.7g of 98% acetic acid aqueous solution, add 0.3g ammonium acetate to the acetic acid aqueous solution, and configure 100g of acetic acid-ammonium acetate mixed solution; take 200g of betaine hydrochloride crude product obtained by the calcium method, and prepare betaine hydrochloride Add the crude product to the acetic acid-ammonium acetate mixture and stir at room temperature; then filter to obtain the filtrate and filter cake; wash the filter cake once with 10 g of 98% acetic acid, and suction filter to obtain the refined product of betaine hydrochloride;

[0027] 2. Concentrate the filtrate by distillation to obtain a concentrated solution of the mixture of calcium sulfate, ammonium acetate and betaine hydrochloride, adjust the pH to neutral, add ethyl acetate solution, filter, put the filtrate into rest for one hour, and separate the liquid to obtain acetic acid Ethyl extract, distill and concentrate the ethyl acetate extract, filter, and wash the filter c...

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Abstract

The invention discloses a purifying method of betaine hydrochloride. Crude betaine hydrochloride prepared by a calcium process is purified through synergism of high-concentration acetic acid solutionand ammonium acetate, so that calcium sulfate is removed effectively, ignition residue is decreased, loss of betaine hydrochloride is avoided, and the yield of betaine hydrochloride is increased substantially; the purifying process is designed ingeniously with a betaine byproduct obtained accidentally.

Description

technical field [0001] The invention belongs to the technical field of chemical material production, and more specifically relates to a method for purifying betaine hydrochloride. Background technique [0002] Betaine hydrochloride, chemical name: trimethylglycine lactone hydrochloride, trimethylbetaine hydrochloride, white to slightly yellow crystalline powder, melting point 241-242 ℃, sour taste, hygroscopic Sex, soluble in water, ethanol, insoluble in ether, chloroform, react with alkali. [0003] Betaine hydrochloride is mainly used as a feed additive. It is a nutritional additive widely used in livestock, poultry and aquaculture to induce food and promote growth. In addition, betaine hydrochloride can also be used to prepare veterinary drug "tylosin". [0004] At present, the preparation methods of betaine hydrochloride mainly include the calcium method and the sodium method. The basic strategy of the calcium method is: first, calcium hydroxide or calcium oxide neutra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C227/40C07C227/42C07C229/12
CPCC07C227/40C07C227/42C07C229/12
Inventor 岳涛周倜周兴波张健何海林周红财张新一
Owner 山东省溯源绿色化工研究院
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