Hydrodemetallizing catalyst for hydrocarbon oil and process of hydrodemetallizing hydrocarbon oil therewith

摘要

PCT No. PCT/JP97/01194 Sec. 371 Date Dec. 5, 1997 Sec. 102(e) Date Dec. 5, 1997 PCT Filed Apr. 8, 1997 PCT Pub. No. WO97/37766 PCT Pub. Date Oct. 16, 1997A hydrodemetallizing catalyst for a hydrocarbon oil comprising a support and a catalytic component carried on the support, this catalyst having a surface, part of which has a coating layer composed of an inert substance having substantially no demetallizing activity, this coating layer allowing substantially no reaction fluid to permeate therethrough. This catalyst preferably has a reaction flow path through which a reaction fluid flows thereinside and is preferred to be, for example, in the form of a honeycomb structure or cylinder having one or a plurality of through holes. In the hydrodemetallization of heavy oils using the above hydrodemetallizing catalyst for a hydrocarbon oil, the sticking of the catalyst can be prevented and the spacing between catalyst particles can be maintained to thereby prevent a rapid increase of differential pressure, so that a continuous operation can be performed for a prolonged period of time.