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High-purity betaine preparation method

A betaine, high-purity technology, applied in the field of preparation of high-purity betaine, can solve the problems of not being able to meet the high-end market, not being able to meet the market demand, and difficult to realize industrialization, etc., and achieve the effect of easy promotion, small investment and low cost

Inactive Publication Date: 2018-10-23
山东瑞弘生物科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mother liquor of beet sugar production contains 12%-15% betaine, which can be directly recovered, and is easily restricted by regions and seasons in the production process. In addition, the separation and purification process is complicated and costly, and it is difficult to realize industrialization, which is far from satisfying Market demand
Sodium synthesis can be industrialized, but the cost is high and the content is low, which cannot meet the needs of the high-end market

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0015] A kind of preparation method of high-purity betaine, concrete steps are as follows:

[0016] 1. Add 280kg of calcium hydroxide to the beating kettle, and then add calcium hydroxide into the reactor through a pneumatic diaphragm pump to react with chloroacetic acid and trimethylamine. Trimethylamine is fed by liquefied jet, and the reaction temperature is controlled at 20°C to 60°C. Control the reaction pressure from 5KPa to 90KPa to obtain betaine solution;

[0017] 2. Add the betaine solution into the purification treatment equipment to obtain a pure betaine solution;

[0018] 3. Put the betaine solution into the membrane stack, control the temperature (50-90°C) and pressure (0.1-0.5MPa) to remove calcium chloride.

[0019] 4. Pour the pure betaine solution into the concentration crystallizer, control the temperature at 110°C, and concentrate to a solid-to-liquid ratio of 85%.

[0020] 5. Add to the kettle and centrifuge to obtain betaine monohydrate.

[0021] 6. Af...

example 2

[0023] A kind of preparation method of high-purity betaine, concrete steps are as follows:

[0024] 1. Add 560kg of calcium hydroxide to the beating kettle, then add it into the kettle to react with chloroacetic acid and trimethylamine, increase the reaction temperature by 5°C, and control the reaction pressure (5-90KPa) to obtain a betaine solution.

[0025] 2. Add the betaine solution into the purification treatment equipment to obtain a pure betaine solution.

[0026] 3. Put the betaine solution into the membrane stack, control the temperature (50-90°C) and pressure (0.1-0.5MPa) to remove calcium chloride.

[0027] 4. Pour the pure betaine solution into the concentrated crystallizer, control the temperature to 115°C, and concentrate to a solid-to-liquid ratio of 80%.

[0028] 5. Add to the kettle and centrifuge to obtain betaine monohydrate.

[0029] 6. After drying with drying equipment, high-purity betaine can be obtained. Yield: 98.1%, purity: 99.6%.

example 3

[0031] A kind of preparation method of high-purity betaine, concrete steps are as follows:

[0032] 1. Add 1120kg of calcium hydroxide to the beating kettle, then add it into the kettle to react with chloroacetic acid and trimethylamine, increase the reaction temperature by 10°C, and control the reaction pressure (5-90KPa) to obtain a betaine solution.

[0033] 2. Add the betaine solution into the purification treatment equipment to obtain a pure betaine solution.

[0034] 3. Put the betaine solution into the membrane stack, control the temperature (50-90°C) and pressure (0.1—0.5MPa) to remove calcium chloride.

[0035] 4. Pour the pure betaine solution into the concentrated crystallizer, control the temperature at 120°C, and concentrate to a solid-to-liquid ratio of 75%.

[0036] 5. Add to the kettle and centrifuge to obtain betaine monohydrate.

[0037] 6. After drying with drying equipment, high-purity betaine can be obtained. Yield: 97.8%, purity: 99.3%.

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Abstract

The invention relates to a high-purity betaine preparation method, which comprises: adding calcium hydroxide into a beating kettle, adding the calcium hydroxide into a reaction kettle through a pneumatic diaphragm pump, and carrying out a reaction on the calcium hydroxide, chloroacetic acid and trimethylamine, wherein the trimethylamine is fed in a liquefaction spraying manner; removing calcium chloride after the reaction; evaporating the pure betaine solution, controlling the temperature at 110-120 DEG C, and concentrating to achieve a solid-liquid ratio of 75-85%; and drying to obtain the product. According to the present invention, betaine is produced by using the calcium method; the adding is performed by the pneumatic diaphragm pump after the alkali beating is completed, and trimethylamine is subjected to liquefaction spraying, such that the reaction is complete under the specific reaction conditions, the process is simple, the investment is low, the raw materials are easy to obtain, the cost is low, and the method is suitable for promotion and industrial production; and the prepared product has good quality, has a purity of more than or equal to 99%, a yield of more than or equal to 97.5% and an impurity content of less than or equal to 0.05%, can completely meet the requirements of feed additives, can further meet the requirements of food, cosmetics, medicine and biochemical and other industries on the high-purity betaine.

Description

technical field [0001] The invention relates to the technical field of betaine preparation, in particular to a method for preparing high-purity betaine. Background technique [0002] Betaine, also known as betaine, betaine, betaine, is a quaternary ammonium alkaloid. It has a sweet taste and is easy to deliquescence. Its melting point is 293°C and decomposes at 300°C. It is soluble in water, methanol and ethanol, but hardly soluble in ether. It can be isomerized to methyl dimethylaminoacetate at the melting point. As a new type of fine chemical, causine can be widely used in food, medicine, daily chemical, printing and dyeing, chemical industry and other fields. As a new type of feed additive, betaine has the functions of promoting animal fat metabolism and protein synthesis, regulating osmotic pressure, promoting animal growth and improving feed conversion rate, and protecting the stability of VA and VB. Betaine is a high-efficiency, high-quality nutritional additive. Ph...

Claims

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Application Information

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IPC IPC(8): C07C227/08C07C229/12
CPCC07C227/08C07C229/12
Inventor 李风光李凤亭夏祥龙
Owner 山东瑞弘生物科技股份有限公司
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