Bucknam and Archer
Method for hydrocracking heavy fraction oils
 A method for hydrocracking a heavy fraction oil which comprises cracking a heavy fraction oil in the coexistence of a catalyst and a hydrogen donating solvent such as tetralin while adding a hydrogen-containing gas to the cracking reactor thereby inhibiting the formation of carbonaceous substances and precursors thereof and then hydrogenating the reaction products in the presence of a solid catalyst while adding a hydrogen-containing gas to the hydrogenating reactor thereby to convert the toluene-insoluble carbonaceous substances and precursors thereof to toluene-soluble ones, thus causing no clogging in an apparatus used. 
Nippon Oil Co., Ltd.
C C
C10G C10G
inventional inventional
Hiroshi Masaru Tadakazu Junichi Kiyoshi
Kato Sato Yamashita Kubo Kato