The catalytic converter for hydrogenation refinement treatment of heavy oil, in hydrogenation refinement treatment manner and the production mannered null

摘要

The catalyst for hydrogenation of heavy oil contains at least one hydrogenated active metal element selected from the group 6, group 8, group 9 and group 10 of the periodic table on the porous inorganic oxide support, and contains potassium content of 0.1 to 3% by weight of the catalyst . The concentration distribution of the potassium is adjusted to be higher in the outer periphery than the center of the catalyst. Due to the potassium component in the outer peripheral portion of the catalyst, the metal contained in the heavy oil is decomposed into small molecules, so that the pores are difficult to be closed, and the low molecular weight can be removed even in the catalyst. As a result, high activity can be maintained over a long period of time.