Method for preparing anhydrous betaine

A technology of anhydrous betaine and aqueous solution, which is applied in the preparation of organic compounds, chemical instruments and methods, and cyanide reaction preparation, etc., which can solve the problems of increased additional costs, low product output, and high environmental protection pressure, and achieve low production costs , low price, excellent cost-effective effect

Inactive Publication Date: 2010-09-15
SHANDONG GELANDE BIO TECH
View PDF1 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are two main methods for preparing anhydrous betaine, one is ion membrane dialysis, and using this method to produce anhydrous betaine requires a large amount of fresh water to wash the permeated sodium chloride to form a large amount of salt water. Such water can not be directly discharged, and needs to be reprocessed, which has caused negative effects such as increased additional cost of production and high environment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The preparation method of betaine anhydrous, comprises the steps:

[0020] (1) Dissolve 500 kg of chloroacetic acid in 850 kg of water at 30°C;

[0021] (2) under stirring state, 285 kilograms of sodium carbonates are slowly added in the above-mentioned chloroacetic acid aqueous solution, when fully reacting to the pH value of solution, when the pH value is 6.5, the reaction is completed, and the gained liquid is sodium chloroacetic acid aqueous solution;

[0022] (3) At 45°C, slowly inject 312 kg of trimethylamine gas into the aqueous solution of sodium chloroacetate for 10 hours;

[0023] (4) Heat the liquid obtained in step (3) to 100° C. for distillation under a pressure of -0.01Mpa until the weight percentage of moisture in the feed liquid is 25%. The moisture content is determined by using a moisture analyzer after sampling of;

[0024] (5) Use 200 mesh filter cloth to filter the liquid after distillation, and the filtrate is sodium chloride;

[0025] (6) At -0...

Embodiment 2

[0027] The preparation method of betaine anhydrous, comprises the steps:

[0028] (1) Dissolve 500 kg of chloroacetic acid in 950 kg of water at 35°C;

[0029] (2) under agitation, 278 kilograms of sodium carbonate are slowly added in the above-mentioned aqueous solution of chloroacetic acid; when the pH value of the solution is fully reacted to 7.0, the reaction is completed, and the gained liquid is an aqueous solution of sodium chloroacetate;

[0030] (3) At 50°C, slowly inject 250 kg of trimethylamine gas into the aqueous solution of sodium chloroacetate for 9 hours;

[0031] (4) Heating the liquid obtained in step (3) to 110° C. for distillation under a pressure of 0.01Mpa, until the weight percentage of moisture in the feed liquid is 27%, and the moisture content is determined by using a moisture analyzer after sampling ;

[0032] (5) Use 200 mesh filter cloth to filter the liquid after distillation, and the filtrate is sodium chloride;

[0033] (6) At -0.05Mpa, trans...

Embodiment 3

[0035] The preparation method of betaine anhydrous, comprises the steps:

[0036] (1) Dissolve 500 kg of chloroacetic acid in 1150 kg of water at 40°C;

[0037] (2) under agitation, 250 kilograms of sodium carbonate are slowly added in the above-mentioned aqueous solution of chloroacetic acid; when the pH value of the solution is fully reacted to 7.5, the reaction is completed, and the gained liquid is an aqueous solution of sodium chloroacetate;

[0038] (3) At 55°C, slowly inject 227 kg of trimethylamine gas into the sodium chloroacetate aqueous solution for 8 hours;

[0039] (4) Heating the liquid obtained in step (3) to 120° C. for distillation under a pressure of 0.02Mpa, until the weight percentage of moisture in the feed liquid is 30%, and the moisture content is determined by using a moisture analyzer after sampling ;

[0040] (5) Use 200 mesh filter cloth to filter the liquid after distillation, and the filtrate is sodium chloride;

[0041] (6) At -0.05Mpa, transfe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for preparing a quaternary ammonium alkaloid, in particular a method for preparing anhydrous betaine. The method for preparing the anhydrous betaine is characterized by comprising the following steps of: dissolving chloroacetic acid in water to form chloroacetic acid aqueous solution; slowly adding sodium carbonate into the chloroacetic acid aqueous solution with stirring; obtaining sodium chloroacetate aqueous solution after finishing a reaction; slowly introducing trimethylamine gas into the sodium chloroacetate aqueous solution for 8 to 10 hours; distilling feed liquid until the moisture is between 25 and 35 weight percent; filtering the distilled feed liquid; transferring filtrate to a highly-enclosed device; and stirring and heating the filtrate into powder to obtain the anhydrous betaine. Therefore, the method has the advantages of no discharge of waste liquid in a production process, low production cost, low energy consumption and high product yield of generally over 97 percent.

Description

(1) Technical field [0001] The invention relates to a preparation method of quaternary ammonium alkaloids, in particular to a preparation method of anhydrous betaine. (2) Background technology [0002] Betaine anhydrous, molecular formula C 5 h 11 NO 2 , molecular weight 117.15, appearance is white crystal or powder, melting point is 293°C, solubility (20°C) is 160g / 100g water. Anhydrous betaine is a new type of fine chemical, which can be widely used in food, medicine, daily chemical, printing and dyeing, chemical industry and other fields. It is also a high-efficiency, high-quality growth-promoting nutritional additive, mainly used in feed additives to replace methionine And used in the production of monosodium glutamate and vitamins in the fermentation industry. [0003] At present, there are two main methods for preparing anhydrous betaine, one is ion membrane dialysis, and using this method to produce anhydrous betaine requires a large amount of fresh water to wash ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C07C229/12C07C227/40C07C227/08C01D3/04
Inventor 高相民
Owner SHANDONG GELANDE BIO TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap