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Clean method for separating and refining 3-hydroxypropanesulfonic acid

A technology of hydroxypropanesulfonic acid and sodium hydroxypropanesulfonate, which is applied in the cleaning field of acidification of organic sodium sulfonate, can solve the problems of difficulty in reaching the electronic level of lithium batteries, cumbersome production and operation, equipment corrosion and high cost of manual operation, etc. Achieve the effect of realizing automatic continuous operation, reducing labor operation intensity and saving the consumption cost of hydrochloric acid

Inactive Publication Date: 2016-06-08
王永军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The synthesis of 3-hydroxypropanesulfonic acid generally adopts an aqueous solution of 3-hydroxypropanesulfonic acid sodium, adding strong acidic hydrochloric acid, sulfuric acid or passing through hydrogen chloride gas for acidification to obtain 3-hydroxypropanesulfonic acid, and a large amount of solid salt by-product Waste, three wastes pollution is very serious
[0009] ① The discharge of three wastes is very serious: a large amount of sodium chloride salt solid waste is produced, which is difficult to handle; at the same time, a large amount of organic solvents such as ethanol are lost, resulting in a large amount of high-COD wastewater, which seriously pollutes water sources and air
[0010] ②The production operation is cumbersome, cannot be automated, and the production efficiency is very low
[0011] ③Deterioration of product quality: Due to the use of hydrochloric acid or hydrogen chloride, the residual chloride ion exceeds the standard, making it difficult for 1,3-propane sultone to reach the electronic level of lithium batteries
[0012] ④ Serious corrosion of equipment: hydrochloric acid or hydrogen chloride volatilizes seriously, which not only severely corrodes equipment, but also leads to poor operating environment
[0013] ⑤ High production costs: organic solvent consumption, equipment corrosion and manual operation costs add up to be very expensive

Method used

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  • Clean method for separating and refining 3-hydroxypropanesulfonic acid

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Add 2500g of 1% dilute sulfuric acid in a 5000ml beaker A, input it into the positive plate layer with circulation pump A, overflow back to beaker A; add 3000g of 32%wt aqueous sodium 3-hydroxypropanesulfonate in 5000ml beaker B, Heat in a water bath to keep the 3-hydroxypropanesulfonate aqueous solution at a constant temperature of 30-40°C, pump it into the third layer with circulation pump B, overflow back to beaker B; add 2000g of pure water to 5000ml beaker C, and start the circulation pump C is sent to the fifth layer plate frame, and overflows back to beaker C; finally, 3000g tap water is added to 5000ml beaker D, pumped into the negative plate layer by circulating pump D, and overflows back to beaker D. After the four circulating pumps are all started to cycle, connect the positive and negative electrodes with 8V DC, and the current quickly rises from 3.8A to 32.6A. The pH value of the material in beaker B is continuously sampled and tested. From the initial pH = ...

Embodiment 2

[0042]Add 2500g of 1% dilute sulfuric acid in a 5000ml beaker A, input it into the positive plate layer with circulation pump A, and overflow back to the beaker A; add 3000g of 36%wt sodium 3-hydroxypropanesulfonate aqueous solution in the 5000ml beaker B, Heat in a water bath to keep the 3-hydroxypropanesulfonate aqueous solution at a constant temperature of 30-40°C, pump it into the third layer with circulation pump B, overflow back to beaker B; add 2000g of pure water to 5000ml beaker C, and start the circulation pump C is sent to the fifth layer plate frame, and overflows back to beaker C; finally, 3000g tap water is added to 5000ml beaker D, pumped into the negative plate layer by circulating pump D, and overflows back to beaker D. After the four circulating pumps are all started to cycle, connect the positive and negative electrodes with 8V DC, and the current quickly rises from 4.3A to 38.8A. The pH value of the material in beaker B is continuously sampled and tested. Fr...

Embodiment 3

[0044] Add 2500g of 1% dilute sulfuric acid in a 5000ml beaker A, input it into the positive plate layer with circulation pump A, overflow back to beaker A; add 3000g of 32%wt aqueous sodium 3-hydroxypropanesulfonate in 5000ml beaker B, Heat in a water bath to keep the 3-hydroxypropanesulfonate aqueous solution at a constant temperature of 30-40°C, pump it into the third layer with circulation pump B, overflow back to beaker B; add 2000g of pure water to 5000ml beaker C, and start the circulation pump C is sent to the fifth layer plate frame, and overflows back to beaker C; finally, 3000g tap water is added to 5000ml beaker D, pumped into the negative plate layer by circulating pump D, and overflows back to beaker D. After the four circulating pumps are all started to cycle, connect the positive and negative electrodes with 9V direct current, and the current rapidly rises from 4.7A to 46.3A. The pH value of the material in beaker B is continuously sampled and tested. From the i...

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Abstract

Provided is a clean method for separating and refining 3-hydroxypropanesulfonic acid. An electrolytic film sodium-removal device is used for separating a weak-acid 3-hydroxy sodium proparesulfonic acid coarse aqueous solution into a 3-hydroxypropanesulfonic acid aqueous solution and a sodium hydroxide aqueous solution by directly carrying out electrolysis sodium-removal to reduce the PH value to be not higher than 0.5. Hydrochloric acid or anhydrous hydrogen chloride used for acidizing the 3-hydroxy sodium proparesulfonic acid aqueous solution is avoided, and an organic solvent such as absolute ethyl alcohol does not need to be used for extracting and separating the 3-hydroxypropanesulfonic acid, so that sodium chloride solid waste is not generated any more, and production cost and three-waste discharging of the 3-hydroxypropanesulfonic acid are substantially lowered.

Description

Technical field: [0001] The invention relates to a cleaning method for separating and refining fine chemicals, specifically a cleaning method for acidifying organic sodium sulfonate. Background technique: [0002] 3-Hydroxypropanesulfonic acid is the key raw material for the synthesis of 1,3-propane sultone. 3-Hydroxypropanesulfonic acid can be dehydrated under high vacuum to obtain 1.3-propanesulfonic acid. Lactone, the cyclization reaction is specifically as formula B: [0003] [0004] Since 1,3-propane sultone has been widely used in the manufacture of lithium batteries, electroplating and pharmaceuticals, the demand has grown very rapidly. If 3-hydroxypropanesulfonic acid can be cleanly prepared at low cost, the application cost of 1,3-propane sultone can be greatly reduced. [0005] The synthesis of 3-hydroxypropanesulfonic acid generally adopts an aqueous solution of 3-hydroxypropanesulfonic acid sodium, adding strong acidic hydrochloric acid, sulfuric acid or pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B3/00C25B9/08C25B9/19
Inventor 王永军王海军
Owner 王永军
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