A continuous production system and process for hydrogenated bisphenol a

By designing a continuous production system and process for hydrogenated bisphenol A, and combining crystallization separation and distillation separation units, the problems of industrial production of hydrogenated bisphenol A and isomer ratio adjustment were solved, achieving efficient and stable production of hydrogenated bisphenol A to meet the needs of high-end applications.

CN117160343BActive Publication Date: 2026-05-29CHINA PETROLEUM ENG CORP LTD +3
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM ENG CORP LTD
Filing Date
2023-07-27
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing technologies make it difficult to achieve continuous industrial production of hydrogenated bisphenol A, and it is also difficult to effectively adjust the ratio of trans/trans isomers in the product, especially since the demand for high-purity trans/trans isomers in high-end applications has not been met.

Method used

A continuous production system for hydrogenated bisphenol A was designed, including raw material preparation, hydrogenation reaction, crystallization separation, and distillation separation units. By adjusting the pressure of the crystallization separation unit and the treatment method of the crystallization mother liquor, combined with distillation separation, the ratio of trans/trans isomers in the hydrogenated bisphenol A product can be controlled, with a process conversion rate of 100%, selectivity ≥98%, and product purity ≥99.5%.

Benefits of technology

The industrial continuous production of hydrogenated bisphenol A has been achieved. The proportion of trans/trans isomers in the product can be adjusted between 50 and 100 wt%, meeting the demand of high-end applications for high-purity trans/trans isomers. The product has stable quality, high conversion rate and selectivity, and high purity.

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Abstract

The application discloses a kind of hydrogenated bisphenol A continuous production system and process, the hydrogenated bisphenol A continuous production system includes sequentially connected raw material deployment unit, hydrogenation reaction unit, crystallization separation unit and rectification separation unit;The outlet of the crystallization separation unit and the outlet of the rectification separation unit are also connected to the raw material deployment unit;The rectification separation unit includes sequentially connected mother liquor refining tower and solvent recovery tower;The solvent recovery tower overhead outlet is connected to the raw material deployment unit inlet.The hydrogenated bisphenol A continuous production process provided by the application has a conversion rate of 100% in the reaction, a selectivity of ≥98%, a purity of ≥99.5% for hydrogenated bisphenol A product, and a ratio of trans / cis isomers in the hydrogenated bisphenol A product can be adjusted between 50-100wt% according to the downstream product requirements.
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