Purification production process of organic sulfonic acid
A production process, the technology of organic sulfonic acid, applied in the field of purification production process of organic sulfonic acid, can solve the problem of low content of sulfonic acid, achieve the effect of reducing sodium ion content, reducing pollution and regeneration frequency, and increasing content
Active 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
[0004] In view of this, it is necessary to provide a purification production process of organic sulfonic acid, in order to solve the existing sulfonate that will contain other anions in the prior art Converted into sulfonic acid, the technical problem that the obtained sulfonic acid content is not high
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Embodiment 1
[0032] The raw material solution is sodium propanesulfonate solution, the concentration of sodium propanesulfonate is 25%, and the concentration of sodium sulfate is 2.7%; the pore diameter of the ceramic membrane is 100nm.
Embodiment 2
[0034] The raw material solution is sodium propanesulfonate solution, the concentration of sodium propanesulfonate is 20%, and the concentration of sodium sulfate is 2.1%; the pore diameter of the ceramic membrane is 200nm.
Embodiment 3
[0036] The raw material solution is sodium propanesulfonate solution, the concentration of sodium propanesulfonate is 30%, and the concentration of sodium sulfate is 3%; the pore diameter of the ceramic membrane is 150nm.
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Abstract
The invention discloses a purification production process of organic sulfonic acid, which comprises the following steps: carrying out ceramic membrane filtration on a raw material solution to obtain aceramic membrane dialysate; the ceramic membrane dialysate enters an ion exchange column filled with amphoteric ion exchange resin for ion exchange, and a crude sulfonic acid solution is obtained; the crude sulfonic acid solution enters a continuous ion exchange system for continuous ion exchange, and a sulfonic acid solution is obtained. According to the method, large-particle substances in theraw material liquid are removed through ceramic membrane filtration, so that the pollution and regeneration frequency of the resin are reduced, and the service life of the resin is prolonged; by adopting the amphoteric ion exchange resin, SO42 and other anions in the organic sulfonic acid can be removed, the content of the organic sulfonic acid is increased, meanwhile, the content of sodium ions is reduced, and the treatment effect of a subsequent continuous ion exchange system is improved; in addition, by means of continuous ion exchange in the mode of combining lower feeding and upper feeding, organic sodium sulfonate can be converted into organic sulfonic acid to the maximum extent, and the content of sodium ions is further reduced.
Description
technical field [0001] The invention relates to the field of organic synthesis, in particular to a purification production process of organic sulfonic acid. Background technique [0002] Sulfonic acid, general formula R-SO 3 H, where R is a hydrocarbon group. The sulfonic acid group is a strongly water-soluble strongly acidic group, and sulfonic acids are all water-soluble strongly acidic compounds. Sulfonic acid can be produced by the sulfonation reaction of aromatic hydrocarbons or the oxidation reaction of mercaptans, and then the sulfonate can be treated with acid to obtain sulfonic acid. However, in this process, due to the existence of unreacted raw materials and by-products, the product purity is relatively low. [0003] Chinese patent CN105418467B discloses a clean production process of converting sodium camphorsulfonate into camphorsulfonic acid. The method includes the following steps: Step 1: raw material liquid is filtered by ceramic membrane to obtain ceramic...
Claims
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IPC IPC(8): C07C303/44C07C309/04
CPCC07C303/44C07C309/04
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