System and method for efficiently preparing taurine

A technology of taurine and taurine, which is applied in the field of chemical engineering, can solve problems such as the quality that cannot be sold

Active Publication Date: 2021-07-06
HUBEI GRAND LIFE SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the problem of alkali metal ion balance, it is theoretically possible to sell a part of the alkali metal acid sulfite solution for sale, but since the alkali metal acid sulfite solution from the ion exchange system still has some impurities, it cannot Reach the quality that sells, therefore for solving the above problems, the present invention provides a kind of system and method for efficiently preparing taurine

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] ①Resin pretreatment: Take 1L of resin and put it into a chromatographic column, keep 3-5cm of water on the top of the resin, treat the resin with 4% sulfuric acid solution 3 times the volume of the resin, and the flow rate is 2-4 times the volume of the resin per hour. Wash the resin with tap water until the outlet pH>4, then transform the resin with 1.5-2BV of 4% NaOH solution at a flow rate of 2-4 times the volume of the resin per hour, and then wash the resin with tap water until the outlet pH 4, and the resin is activated and ready for use.

[0073] ②Column passage of evaporated liquid sample: Take the original evaporated liquid and dilute it until the content of taurine alkali metal salt is about 20wt%. Various indicators. After the evaporating liquid is sampled, wash the ion-exchange column with water until the pH of the effluent is 8-9, that is, the elution is completed.

[0074] ③ Resin regeneration: The resin is activated according to the first activation mode...

Embodiment 3

[0111] ①Resin pretreatment: Take 6L resin and put it into a chromatographic column. Keep 3-5cm of water on the top of the resin. Treat the resin with 4% sulfuric acid solution 3 times the volume of the resin. The flow rate is 2-4 times the volume of the resin per hour. Wash the resin with tap water until the outlet pH>4, then transform the resin with 1.5-2BV of 4% NaOH solution at a flow rate of 2-4 times the volume of the resin per hour, and then wash the resin with tap water until the outlet pH 4, and the resin is activated and ready for use.

[0112] ② Resin column packing: Take 6L of activated resin and put them into 6 chromatographic columns in equal amounts, and keep 3-5cm of water on the top of the resin, and the numbers are A, B, C, D, E, F.

Embodiment 4

[0143] The resin column of Group C or D in Comparative Example 10 was selected for the following experiments, and the activation mode was the second activation mode.

[0144] ③Column passage of evaporating liquid sample: The evaporating liquid is fixed to a certain volume according to a certain multiple, and a certain amount of pretreated resin is transferred to the chromatography column, and the evaporating liquid with a constant volume is forwardly passed through the column according to a certain flow rate for adsorption, according to different time periods It is required to determine the end point and measure various indicators. After the evaporating liquid is sampled, the step is to wash with water until the pH of the effluent is 8-9, that is, the elution is completed.

[0145] ④ Resin regeneration: Use sulfuric acid solution to pass through the column at a certain flow rate for desorption. It is determined that the resin is fully activated when there is no sodium ion in t...

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Abstract

The present invention provides a system for efficiently preparing taurine. The system comprises a liquid storage unit, an ion exchange unit and a distribution unit. The liquid storage unit is used for storing a solution containing taurine alkali metal salt prepared by an ethylene oxide method. The ion exchange unit comprises a plurality of ion exchange resin columns, a single ion exchange column is independently activated in a first activation mode or a second activation mode, the first activation mode adopts sulfurous acid for activation so as to obtain acidic sulfurous acid alkali metal salt and taurine, and the second activation mode adopts sulfuric acid for activation so as to obtain alkali metal sulfate and taurine. The distribution unit is respectively connected with the liquid storage unit and the ion exchange unit, and the distribution unit is configured to adjust the amount of the solution conveyed from the liquid storage unit to the ion exchange resin columns in the ion exchange unit.

Description

technical field [0001] The invention relates to the field of chemical engineering, in particular, the invention relates to a system and method for efficiently preparing taurine. Background technique [0002] Taurine is a special sulfur-containing amino acid. As a drug, it has the effects of anti-inflammatory, antipyretic, analgesic, anticonvulsant and lowering blood pressure. As a health product, it can improve the brain development, nerve conduction, visual function and Calcium absorption has a good role in promoting. [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 ethylene oxide method prepares taurine and comprises three steps: [0004] (1) Addition reaction [0005] [0006] Preparation of alkali metal isethionate by reacting ethylene oxide with alkali metal acid sulfite. [0007] (2) Ammonolysis reaction [0008] [0009] The alkali metal salt ...

Claims

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Application Information

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IPC IPC(8): C07C303/44C07C303/02C07C309/14C07C303/22
CPCC07C303/44C07C303/02C07C303/22C07C309/14C07C309/08B01D15/363
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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