催化裂化柴油中多环芳烃选择性加氢饱和工艺研究

摘要

The influence of process parameters on hydrogenation saturation of aromatics in FCC light cycle oil over Ni-Mo-W/γ-Al2 O3 catalyst was investigated. The results show that different process conditions have different effects on the reaction of polyaromatics into mono-aromatics and then further into saturates. Under the conditions of 330 ℃,hydrogen partial pressure of 6.4 MPa,LHSV of 1.2 h-1 and H2/oil volume ratio of 800,polyaromatics saturation rate can reach 80.1%,the total aromatics satu-ration rate is 16.4% and mono-aromatics yield is 42.6%. Under the reaction conditions and the catalyst used,the maximum yield of mono-aromatics at high polyaromatics saturation rate can be realized.%采用 Ni-Mo-W/γ-Al2 O3加氢精制催化剂，在中型加氢试验装置上考察了加氢工艺参数对催化裂化柴油中多环芳烃选择性加氢饱和反应规律的影响。结果表明，不同工艺条件对多环芳烃转化为单环芳烃、单环芳烃进一步加氢生成饱和烃的各步反应影响效果不同，在反应温度为330℃、氢分压为6.4 MPa、体积空速为1.2 h－1、氢油体积比为800的条件下，多环芳烃饱和率可达80.1％，总芳烃饱和率16.4％，单环芳烃产率42.6％，可实现高的多环芳烃饱和率下单环芳烃的产率最大化。