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Method for producing taurine by virtue of bipolar ion exchange membrane technology

An ion-exchange membrane and bipolar technology, applied in the field of taurine production using bipolar ion-exchange membrane technology, can solve problems such as separation difficulties, inability to fully recover taurine, environmental pollution, etc., and achieve broad application prospects, Separation and purification are simple and easy, and the effect of reducing production costs

Inactive Publication Date: 2015-05-06
SHANDONG TIANWEI MEMBRANE TECH
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Problems solved by technology

[0003] At present, the main methods of taurine preparation include ethylene dichloride method, ethyleneimine method, ethanolamine method, ethylene oxide method, etc., wherein a large amount of salt is produced in the ethylene dichloride method and ethylene oxide method materials, Difficult separation, easy to cause environmental pollution and can not fully reclaim taurine; therefore, it is necessary to develop an environmentally friendly and high recovery production process research

Method used

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  • Method for producing taurine by virtue of bipolar ion exchange membrane technology

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Embodiment 1

[0018] The steps of preparing taurine are as follows:

[0019] (1) Under the condition of a temperature of 20°C, the sodium sulfate aqueous solution with a concentration of 8% is continuously sent into the anode chamber and the cathode chamber of the bipolar ion exchange membrane electrodialyzer through the liquid inlet 25 and the liquid inlet pipe 24, and at the same time The sodium taurate aqueous solution that water and concentration are 8% is sent into the alkali chamber 11 and the feed liquid chamber 12 of bipolar ion exchange membrane electrodialyzer continuously by alkali chamber inlet 27 and feed liquid chamber inlet 29 respectively; Control sodium sulfate The flow rate of aqueous solution, water and sodium taurate aqueous solution is 3 cm / s; the operating current density is 400 A / m 2 Under the action of a direct current electric field, the sodium ions in the sodium sulfate aqueous solution in the anode chamber 10 pass through the anode terminal cationic membrane 7 and...

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Abstract

The invention discloses a method for producing taurine by virtue of bipolar ion exchange membrane technology. The method comprises the following steps: (1) introducing an aqueous solution of sodium sulfate into anode and cathode chambers of a bipolar ion-exchange membrane electrodialyzer and simultaneously respectively introducing water and 8-10% aqueous solution of sodium taurate into a base chamber and a material liquid chamber of the bipolar ion-exchange membrane electrodialyzer; under the action of a direct current electric field, feeding sodium ions inside the anode chamber into the base chamber to be combined with hydroxide ions obtained by water dissociation to form sodium hydroxide together with the bipolar membrane, combining hydrogen ions obtained by water dissociation and taurine ions to form taurine by virtue of the bipolar membrane inside the material liquid chamber and feeding sodium ions inside the material liquid chamber to the cathode chamber, flowing aqueous solution of sodium sulfate out from the anode and cathode chambers, flowing a sodium hydroxide solution out from the base chamber and flowing a taurate solution out from the material liquid chamber; and (2) concentrating the taurate solution so that the crystallized product is precipitated and filtering the crystallized product to obtain taurate. The method has the advantages of no emission of pollutants, no addition of a large amount of chemicals, simple operation and short production cycle.

Description

technical field [0001] The invention relates to a method for producing taurine, in particular to a method for producing taurine using bipolar ion exchange membrane technology. Background technique [0002] Taurine, also known as 2-aminoethanesulfonic acid, is a special amino acid, which is an essential nutrient element for the human body. It has a wonderful effect on balance and health. It has a variety of physiological functions and is essential for human health. A kind of nutrient; Taurine is mainly used in medicine in my country, and it is gradually recognized and accepted by Chinese people as food nutrition. With the gradual increase of market demand, it is bound to find an economically and environmentally feasible production method. [0003] At present, the main methods of taurine preparation include ethylene dichloride method, ethyleneimine method, ethanolamine method, ethylene oxide method, etc., wherein a large amount of salt is produced in the ethylene dichloride met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B3/04C25B9/10C25B13/02C25B3/25C25B9/23
Inventor 郭锡伟王炳春傅荣强陈晓丹李正浩张治磊
Owner SHANDONG TIANWEI MEMBRANE TECH
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