Method for preparing betaine and betaine hydrochloride

A betaine and hydrochloride technology, which is applied in chemical instruments and methods, cyanide reaction preparation, organic compound preparation, etc., can solve the problems of waste water discharge and large product investment, and achieve cost reduction, low investment, and raw material saving Effect

Inactive Publication Date: 2017-07-11
农安旺泉饲料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problems of large product investment or more wastewater discharge in the existing production process

Method used

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  • Method for preparing betaine and betaine hydrochloride
  • Method for preparing betaine and betaine hydrochloride
  • Method for preparing betaine and betaine hydrochloride

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Preparation of betaine

[0035] (1) Dissolve chloroacetic acid in water to make a 30% solution and inject it into the first reactor, then add light calcium carbonate to the chloroacetic acid solution at 20°C and a pH value of 6, and keep stirring to make it fully react to obtain a reaction solution.

[0036] (2) Filter the reaction solution and inject it into the second reaction kettle. When the reaction temperature drops to 25° C., feed liquid trimethylamine into the second reaction kettle and stir until the end of the reaction to obtain an amination solution, i.e. betaine mother liquor.

[0037] (3) Place the amination solution in a concentration kettle and concentrate to 80% of the original volume to obtain the betaine concentrate and excess trimethylamine solution.

[0038] (4) The excessive trimethylamine solution is reclaimed and injected into the second reaction kettle to participate in the amination reaction.

[0039] (5) The concentrated solution obtained in ...

Embodiment 2

[0049] Preparation of betaine

[0050] (1) Dissolve chloroacetic acid in water to make a 20% solution and inject it into the reactor, then add light calcium carbonate to the chloroacetic acid solution at 20°C and a pH value of 5, and keep stirring to make it fully react.

[0051] (2) Filter the reaction solution and pour it into the second reaction kettle. When the reaction temperature drops to 20° C., feed liquid trimethylamine into the second reaction kettle and stir until the end of the reaction to obtain an amination solution, that is, betaine mother liquor.

[0052] (3) Place the amination solution in a concentration kettle and concentrate to 75% of the original volume to obtain the betaine concentrate and excess trimethylamine solution.

[0053] (4) The excessive trimethylamine solution is reclaimed and injected into the second reaction kettle to participate in the amination reaction.

[0054] (5) Put the concentrated solution obtained in (3) directly into the spray dry...

Embodiment 3

[0063] Preparation of betaine

[0064] (1) Dissolve chloroacetic acid in water to make a 60% solution and inject it into the reactor, then add light calcium carbonate to the chloroacetic acid solution at 20°C and a pH value of 7, and keep stirring to make it fully react to obtain The reaction solution.

[0065] (2) Filter the reaction solution and pour it into the second reaction kettle. When the reaction temperature drops to 30° C., feed liquid trimethylamine into the second reaction kettle and stir until the end of the reaction to obtain an amination solution, that is, betaine mother liquor.

[0066] (3) Place the amination solution in a concentration kettle and concentrate to 80% of the original volume to obtain the betaine concentrate and excess trimethylamine solution.

[0067] (4) The excessive trimethylamine solution is reclaimed and injected into the second reaction kettle to participate in the amination reaction.

[0068] (5) Put the concentrated solution obtained i...

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Abstract

The invention discloses a method for preparing betaine and betaine hydrochloride. The method comprises the following steps: mixing and stirring light calcium carbonate and an aqueous solution of chloroacetic acid to carry out a neutralization reaction; filtering the obtained reaction solution, introducing liquid trimethylamine, stirring the filtered reaction solution and the liquid trimethylamine to fully carry out an amination reaction; and concentrating the obtained aminated solution, and carrying out spray drying to obtain the betaine, or adding a hydrochloric acid, carrying out a reaction and carrying out crystallization to obtain the betaine hydrochloride. The method has the characteristics of simple production technology, substantial reduction of the production cost, no wastewater in the production process, repeated utilization of a mother liquor, and meeting of green production requirements. Compared with commonly used sodium methods in convectional production, the method disclosed in the invention has the advantages of low obvious investment, low unit consumption of raw materials, and good product quality.

Description

technical field [0001] The invention belongs to the field of preparation of betaine, in particular to a method for preparing betaine and betaine hydrochloride. Background technique [0002] Betaine was originally a natural substance separated from the waste molasses produced in the beet sugar production process. It is also called betaine and trimethylglycine. It has good physical and chemical properties, good stability and antioxidant capacity, high temperature and acid resistance Alkali; its chemical structure is similar to that of amino acid and choline, and has a variety of biological functions. It is widely used in feed additives, pharmaceutical industry, agricultural and forestry production, food additives, daily chemicals and other fields. [0003] At present, the preparation methods of betaine are mainly divided into two types: one is extraction and separation from beet molasses; the other is the method of chemical synthesis. [0004] With the continuous development ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C227/08C07C227/18C07C229/12
CPCC07C227/08C07C227/18C07C229/12
Inventor 房照智石莉
Owner 农安旺泉饲料科技有限公司
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