CATALYTIC 2-STAGE HYDROCRACKING OF ARABIAN VACUUM RESIDUE AT A HIGH CONVERSION LEVEL WITHOUT SLUDGE FORMATION

被引:16
作者
MOCHIDA, I
ZHAO, XZ
SAKANISHI, K
机构
[1] Institute of Advanced Material Study, Kyushu University, Kasuga
关键词
D O I
10.1021/ie00099a005
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Catalytic two-stage hydrocracking of Arabian vacuum residue was studied using commercial Ni-Mo catalysts in a batch autoclave to achieve a higher conversion above 50% to °C-distillate without producing “dry sludge”, which is defined as insoluble substances in the product oil matrix. The hydrogenation at 390 °C of the first stage was found to be very effective in suppressing sludge formation in the second stage at higher temperatures, 430-450 °C, where the cracking to produce the distillate dominantly proceeded. The larger pore size catalyst (KFR-10) was suitable for these purposes, while the smaller pore size catalyst (KF-842) failed to suppress the sludge formation. The shorter contact time of the second stage at a relatively higher temperature appears favorable to increase the conversion without producing the sludge. The mechanism of sludge formation and the storage stability of the hydrocracked product are preliminarily examined. © 1990, American Chemical Society. All rights reserved.
引用
收藏
页码:334 / 337
页数:4
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