催化裂化系统压力的影响及选择

Effect and selection of system pressure in fluid catalytic cracking unit

分析了催化裂化系统压力对裂化性能、再生性能、能耗、一次性投资的影响。在中型提升管催化裂化试验装置上,考察了系统压力对产品分布、产品性质的影响,据此计算了催化裂化装置的基准能耗。计算结果表明,系统压力的提高有利于降低催化裂化装置的能耗,但会导致汽油产率下降,汽油辛烷值降低,焦炭产率增加,综合经济效益下降。

The effects of the system pressure in a fluid catalytic cracking（ FCC） unit on cracking performance,regeneration performance,energy consumption and capital expenditure are analyzed.The influences of pressure on product distribution and properties of products is investigated in a FCC pilot plant,and the benchmark energy consumption of a FCC unit is calculated accordingly.It is revealed through calculation that the increase of system pressure is helpful to cut down the energy consumption of FCC unit,but can lead to the declines of gasoline yield and RON,and result in rise of coke yield,which will hence push down the overall economic benefit.