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Preparation method of 3-hydroxypropanesulfonic acid

A technology of hydroxypropane sulfonic acid and sodium hydroxypropane sulfonate, which is applied in the field of preparation of 3-hydroxypropane sulfonic acid, can solve the problems of inconvenient operation, potential safety hazards, transportation, waste of energy consumption, etc., achieves reduction of acid dosage and ensures sufficient reaction , the effect of reducing the amount of acid

Pending Publication Date: 2021-01-05
湖北吉和昌化工科技有限公司
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Problems solved by technology

[0006] At present, the industrial production method of 3-hydroxypropanesulfonic acid mainly uses propenyl alcohol and sodium pyrosulfite or sodium bisulfite as raw materials. Under the triggering of initiator, sodium 3-hydroxypropanesulfonate is produced by batch reaction, and there is insufficient reaction In addition, sodium 3-hydroxypropane sulfonate needs to be acidified by an excess of more than double the amount of inorganic acid, resulting in a large amount of waste acid water, resulting in a huge waste of energy consumption and environmental pollution.
There are literatures that use hydrogen chloride gas acidification process, although it can reduce the amount of waste acid, but there are safety hazards and inconvenience in transportation and operation in industrial production

Method used

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  • Preparation method of 3-hydroxypropanesulfonic acid

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preparation example Construction

[0025] combine figure 1 , the specific embodiment proposes a kind of preparation method of 3-hydroxypropanesulfonic acid, comprises the following steps:

[0026] 1) The propenyl alcohol is mixed with the initiator and water to obtain a mixed solution, and the mixed solution and the aqueous sodium bisulfite solution are simultaneously pumped into the microchannel reactor from two inlets and heated at a pressure of 0.5-1MPa The reaction is carried out at a reaction temperature of 20-60°C to obtain the sodium 3-hydroxypropanesulfonate; wherein, the pumping speed of the mixed solution is 130-135kg / h, and the aqueous solution of sodium bisulfite The pumping speed is 80-85kg / h; The mol ratio of described propylene alcohol, sodium bisulfite and initiator is 1:(1~1.02):(0.001~0.5); Described initiator is H 2 o 2 、NaS 2 o 8 , (CH 3 ) 3 One or more of COOH and dibenzoyl peroxide. Reacting at a pressure of 0.5-1 MPa can speed up the movement speed between molecules and speed up th...

Embodiment 1

[0034] The present embodiment provides a kind of preparation method of 3-hydroxypropanesulfonic acid, comprises the steps:

[0035] (1) Add 3000kg of deionized water and 1550kg of sodium bisulfite to the 5000L enamel reactor A with mechanical stirring, stir and dissolve at room temperature;

[0036] (2) Add 2000kg deionized water, 850kg propylene alcohol and 20kg H to the 3000L enamel reactor B with mechanical stirring 2 o 2 , stir evenly at room temperature;

[0037] (3) Through the metering pump, pump the liquid in the A kettle at 130kg / h, and the solution in the B kettle at 80kg / h, and simultaneously pump them into the microchannel reactor for reaction. The reaction temperature is 50°C, and the discharge back pressure valve is adjusted to make the system The pressure reaches 0.5MPa;

[0038] (4) The reaction solution passes through the A column activated by the separation system. After the A column resin is saturated with sodium ions, switch to the B column. At this time...

Embodiment 2

[0042] The present embodiment provides a kind of preparation method of 3-hydroxypropanesulfonic acid, comprises the steps:

[0043](1) Add 3000kg of deionized water and 1560kg of sodium bisulfite to the 5000L enamel reactor A with mechanical stirring, stir and dissolve at room temperature;

[0044] (2) Add 2000kg deionized water, 860kg propylene alcohol and 25kg NaS to the 3000L enamel reactor B with mechanical stirring 2 o 8 , stir evenly at room temperature;

[0045] (3) Through the metering pump, pump the liquid in the A kettle at 135kg / h, and the solution in the B kettle at 82kg / h, and simultaneously pump them into the microchannel reactor for reaction. The reaction temperature is 20°C, and the discharge back pressure valve is adjusted to make the system The pressure reaches 1MPa;

[0046] (4) The reaction solution passes through the A column activated by the separation system. After the A column resin is saturated with sodium ions, switch to the B column. At this time,...

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Abstract

The invention relates to a preparation method of 3-hydroxypropanesulfonic acid. The method comprises the following steps: (1) introducing propenol and a sodium hydrogen sulfite aqueous solution into amicro-channel reactor under the initiation of an initiator to react, so as to prepare sodium 3-hydroxypropanesulfonate; and 2) introducing the sodium 3-hydroxypropanesulfonate prepared in the step 1)into an ion exchange system for ion exchange to prepare the 3-hydroxypropanesulfonic acid. The preparation method guarantees sufficient reaction and reduces the acid consumption at the same time.

Description

technical field [0001] The invention relates to the field of preparation of organic compounds, in particular to a preparation method of 3-hydroxypropanesulfonic acid. Background technique [0002] 3-Hydroxypropanesulfonic acid is an important organic synthesis intermediate and an important sulfonating agent. After dehydration and cyclization, it will generate 1,3-propane sultone, which can be widely used in the synthesis of electroplating intermediates, Surfactants, sensitizing dyes, and power battery electrolyte additives are used to improve the energy storage effect and safety and stability of power batteries. [0003] CAS number: 15909-83-8 [0004] Molecular formula: C 3 h 8 o 4 S [0005] Molecular weight: 140.16 [0006] At present, the industrial production method of 3-hydroxypropanesulfonic acid mainly uses propenyl alcohol and sodium pyrosulfite or sodium bisulfite as raw materials. Under the triggering of initiator, sodium 3-hydroxypropanesulfonate is produce...

Claims

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Application Information

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IPC IPC(8): C07C309/08C07C303/20B01J19/00C07C303/44
CPCC07C303/20B01J19/0093C07C303/44
Inventor 冯庆诚付远波杨威黄开伟肖忠新付启龙
Owner 湖北吉和昌化工科技有限公司
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