PETROLEUM PROCESSING AND PETROCHEMICALS ›› 2023, Vol. 54 ›› Issue (2): 134-144.

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PROGRESS IN ALCOHOL RECOVERY TECHNOLOGY FROM ALCOHOL-WATER SYSTEM

  

  • Received:2022-08-05 Revised:2022-08-19 Online:2023-02-12 Published:2023-02-24

Abstract: Alcohols can be divided into high-carbon alcohols and low-carbon alcohols according to the number of carbon atoms contained in alcohols. The research progress of alcohol recovery technology in the alcohol-water system of high-carbon alcohol and low-carbon alcohol was reviewed in detail, and the advantages and disadvantages of each technology were compared in terms of energy consumption, raw material composition, purity and yield of product. The results showed that liquid-liquid extraction was the main technology for recovering high-carbon alcohol; due to the advantages of different technologies and the avoidance of their defects, the combined technology would become an important development direction to realize green and efficient energy saving of low carbon alcohol recovery technology in alcohol-water system. Chemical Looping Separation (CLS) had greater potential for polyol recovery from polyol-water system.

Key words: alcohol-water system, alcohol recovery, high/low carbon alcohol, combination technology, chemical looping separation