Process for refining 2-aminoethanesulfonic acid from crude 2-aminoethane-sulfonic acid, 2-aminoethanesulfonic acid obtained there from and use thereof

An aminoethanesulfonic acid, crude technology, applied in chemical instruments and methods, applications, food preparation and other directions, can solve the problems of serious agglomeration, low purity, etc., and achieve the effects of good desalination, high purity, and energy saving.
CN101857558AInactive Publication Date: 2010-10-13RHELN PHARMA CONSULT
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
RHELN PHARMA CONSULT
Publication Date
2010-10-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

Disclosed is a process for refining 2-aminoethanesulfonic acid from crude 2-aminoethanesulfonic acid (content of at least 90%) obtained by chemical synthesis comprising the following steps: i. heating a mixture of 100g of crude 2-aminoethanesulfonic acid dissolved in an adequate quantity of water, preferably between 230g and 250g, together with an effective amount of adsorbent to 85 DEG C to 95DEG C ii. adding 0.5g to 3g of an alcanol having 1 to 3 carbon atoms while changing the temperature to 88 DEG C to 92 DEG C for 10 to 120 min, preferably 20 to 40 min iii. separating the adsorbent including impurities from the liquid iv. crystallise 2-aminoethanesulfonic acid by controlled cooling of the mother liquid v. separating the 2-aminoethanesulfonic acid crystals from the liquid and drying the same in a per se known manner and use thereof.
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Description

technical field

[0001] The present invention relates to a method for refining 2-aminoethanesulfonic acid from crude 2-aminoethanesulfonic acid, high-purity 2-aminoethanesulfonic acid obtained by the method and its use. Background technique

[0002] Due to the limitation of raw material source, production cost and production capacity, chemical synthesis is usually used to produce 2-aminoethanesulfonic acid instead of biological extraction. There are about 20 chemical synthesis methods for the production of taurine, depending on the nature of the raw material and the efficiency of the process. Among these 20 methods, the ethylene oxide method is the most cost-effective and the highest yield method.

[0003] However, the method requires high temperature (260-270° C.) and high pressure (19 MPa) to generate 2-aminoethanesulfonate sodium (2-aminoethane sodium, Ox sodium), and requires a fixed temperature (70° C.) and pH7. Add a certain volume of liquid acid to the reactor under ...

Claims

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