HYDROGENATION AND CATALYTIC CRACKING COMBINED PROCESS FOR RESIDUAL OIL

摘要

A mixing step of hydrotreating and catalytic cracking of the residual oil, residual oil, a selective distillation product of the acidic solid impurities are removed the catalytic cracking a heavy cycle oil, the selective fractionation oils and acidic solid impurities have been removed catalytic cracking slurry oil residual Oh Ilyong hydrogenation step of introducing into the device, hydrogenated obtained residual oil and optionally a vacuum to obtain a number of product was charged into a gas oil in a catalytic cracking unit, the hydrogen added to the acidic solid impurities have been removed the catalytic cracking of heavy cycle oil system the step of circulating into the step of distilling and separating the catalytic cracking slurry oils, and the acidic solid product after distillation the impurities are removed to start the mixing process, comprising the step of recycling into the hydrogenation apparatus. By the method of the present invention is a combination of hydrogenation and catalytic cracking reaction more efficiently, improving the quality of the hydrogenated product of the residual oil is, to extend the operating cycle of the apparatus for the hydrogenation of the residual oil, hydrogenated diesel oil and increase the yield of light oil and catalytic cracking, it reduces the amount of cracking catalyst during coke. ; The residual oil, catalytic cracking, hydrogenation, acidic solid impurities, heavy cycle oil, slurry oil, hydrogenated diesel oil