Abstract: Countercurrent continuous catalytic reforming technology is an important original fundamental petroleum processing technology with fully independent intellectual property rights. The matching performance between catalyst activity and reaction difficulty is better than that of traditional reforming technology.This technology has been successfully applied in large-scale chemical industry, and the maximum scale of the industrial plant was 2.60 Mt/a. Countercurrent continuous reforming technology is an important original fundamental petroleum processing technology with fully proprietary intellectual property rights. This technology has been successfully applied in large-scale chemical industry, and the maximum scale of the industrial plant was 2.60 Mt/a. The results of industrial applications showed that C₅+ liquid yield, aromatics yield and hydrogen yield were high, energy consumption was low, catalyst loss was low, and the main technical index of operation was leading. From the technical concept presented, basic research of reaction-regeneration principle, development of catalyst activity regulation technology, development of key equipment and engineering technology, development of energy-saving technology, etc., the history of technology development and industrial application was comprehensively reviewed, and the technology prospect was also presented.

Key words: countercurrent, continuous catalytic reforming, aromatics, hydrogen