关键词: 重油催化裂化, 高压蒸汽, 外取热器, 循环热水泵, 余热锅炉

Abstract: For the first time in the world, SINOPEC Engineering Incorporation integrated and developed technologies such as overlapping two stage regenerator, catalyst cooler for high-pressure steam generation, wet wound forced BFW pump and dual function waste heat boiler, to develop high-pressure steam generation and energy recovery technology of catalytic cracking unit. This technology makes full use of the characteristics of RFCC unit with large steam production load and high thermal energy temperature level, and changes the steam generated by catalyst cooler and waste heat boiler from medium-pressure grade to high-pressure grade, which is conducive to the step-by-step utilization of steam. The technology can remarkablely reduce the energy consumption of RFCC unit by 125.6~167.5 MJ/t, which is equivalent to a reduction of 7%~10%. The technology has been successfully applied to the 2.8 MM TPY RFCC unit of SINOPEC Jingmen Company, which has reduced the coal consumption of the whole plant by 200~250 thousand metric tons per year. The high-pressure steam generation and energy recovery technology has greatly reduced the carbon emission and flue gas pollutant emission of the whole plant, with remarkable economic and social benefits.

Key words: residue fluid catalytic cracking, high pressure steam, catalyst cooler, BFW pump, waste heat boiler