System and method for preparing taurine

A technology of taurine and isethionic acid, applied in the field of chemical engineering, can solve problems such as low efficiency and complicated taurine process

Active Publication Date: 2021-07-09
HUBEI GRAND LIFE SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, the current process for producing taurine is complex and not effici...

Method used

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  • System and method for preparing taurine
  • System and method for preparing taurine
  • System and method for preparing taurine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Utilize sulfur dioxide saturated solution to activate the cation exchange resin system to produce taurine, wherein the circulation procedure is after the resin is fully activated: the diluted evaporation liquid is fed into the ion exchange column, and when the pH value of the effluent begins to increase, the effluent is collected, When the pH of the effluent reaches about 8, stop entering the evaporative liquid; wash the ion exchange column with water until the pH of the effluent is 4 to 6, stop entering water; activate the ion exchange column with saturated sulfurous acid solution, and after the activation is complete, use water Wash the ion exchange column again until the pH of the effluent is about 5, stop the water washing, and enter the next cycle. The specific steps are as follows:

[0060] S1, resin pre-activation treatment: take 4L of resin and put it into the chromatographic column to be firm, keep 3-5cm of water on the upper part of the resin, and treat the res...

Embodiment 2

[0068] The system of the invention is used to produce taurine, the concentration of taurine alkali metal salt in the evaporation liquid is controlled to be 15wt%, 20wt% and 25wt%, the sample injection temperature is 60°C to 70°C, and the saturated solution of sulfurous acid and the concentration of Activated the mixture of 45 wt% sodium bisulfite solution, detected and controlled the taurine injection amount, taurine conversion rate, purification purity under the same conditions, single cycle time, water demand and resin column under the same pH endpoint value Available times.

[0069] The specific experimental steps are as follows:

[0070] S1, resin pre-activation treatment: take 4L of resin and put it into the chromatographic column to be firm, keep 3-5cm of water on the upper part of the resin, and treat the resin with 2-4 times of the sulfuric acid solution with a volume content of 4wt% of the resin, and the flow rate is 1.5-5BV / h, after the end, wash the resin with wat...

Embodiment 3

[0079] S1. Resin packing: Use 1L of resin to be sturdy, transfer it to the resin column with deionized water, and retain 3-5cm of water on the upper part of the resin.

[0080] S2. Resin pre-activation treatment: Treat the resin with 4wt% sulfuric acid solution 3 times the resin volume, the flow rate is 1.5~5BV / h, after the end, wash the resin with water until the outlet pH>4, and then use 4wt% NaOH solution 2~4 times the resin volume , 1.5 ~ 5BV / h flow rate to transform the resin, after the end, wash the resin with water to the outlet pH4, and the resin activation is completed for subsequent use.

[0081] S3. Evaporation liquid sample is passed through the column: take the pretreated resin and transfer it to the chromatography column, and the evaporation liquid with a sodium taurine content of 20wt% is adsorbed through the column according to a certain flow rate, and the end point is determined according to the requirements of different time periods. various indicators. Afte...

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Abstract

The invention provides a device for preparing taurine, and the device comprises a liquid storage unit which is used for storing a solution containing taurine alkali metal salt prepared by an ethylene oxide method, an ion exchange unit connected with the liquid storage unit and comprising an ion exchange resin column of which the bottom is provided with a first connector and a second connector, a hydroxyethanesulphonic acid pipeline with one end connected with the ion exchange unit through the first connector and the other end connected with the liquid storage unit and used for returning isethionic acid to the liquid storage unit, a taurine pipeline with one end connected with the ion exchange unit through the second connector and the other end connected with the taurine collection unit, and a taurine collecting unit configured to collect a taurine solution.

Description

technical field [0001] The present invention relates to the field of chemical engineering, in particular, the present invention relates to a device and method for preparing taurine. Background technique [0002] Taurine is a special sulfur-containing amino acid. As a drug, it has anti-inflammatory, antipyretic, analgesic, anticonvulsant and blood pressure-lowering effects. Calcium absorption has a good promotion effect. [0003] As the largest taurine production base in the world, China produces about 5 tons of taurine raw materials through the ethylene oxide method every year. The preparation of taurine by ethylene oxide method includes three steps: [0004] (1) Addition reaction [0005] [0006] Ethylene oxide is reacted with alkali metal acid sulfite to prepare alkali metal isethionate. [0007] (2) Ammonolysis reaction [0008] [0009] Isethionate alkali metal salt reacts with ammonia to prepare taurine alkali metal salt under alkaline conditions, because in...

Claims

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Application Information

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IPC IPC(8): C07C303/32C07C303/44C07C309/08C07C309/14
CPCC07C303/32C07C303/44C07C309/08C07C309/14
Inventor 孙华君谈敏严晓婧江汝泳彭洪波唐佳乐郭晨王星星钱志强
Owner HUBEI GRAND LIFE SCI & TECH CO LTD
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