초록 ▼

A combination process is described for upgrading residual oils and high boiling portions thereof comprising metal contaminants and high boiling Conradson carbon forming compounds comprising a thermal visbreaking operation with fluidizable inert solids followed by a fluidized zeolite catalytic cracki

A combination process is described for upgrading residual oils and high boiling portions thereof comprising metal contaminants and high boiling Conradson carbon forming compounds comprising a thermal visbreaking operation with fluidizable inert solids followed by a fluidized zeolite catalytic cracking operation processing demetallized products of the visbreaking operation, regenerating solid particulate of each operation under conditions to provide CO rich flue gases relied upon to generate steam used in each of the fluidized solids conversion operation and downstream product separation arrangements, separating the wet gas product stream of each operation in a common product recovery arrangement and processing the high boiling feed product of visbreaking comprising up to 100 ppm Ni+V metal contaminant over a recycled crystalline zeolite cracking catalyst distributed in a sorbent matrix material comprising a high level of Ni+V metal contaminant.

대표청구항 ▼

A method for upgrading a high boiling portion of a topped crude oil comprising at least 100 ppm metal contaminants and porphyrins, asphaltenes and high molecular weight multi-ring hydrocarbon material in a combination process comprising a riser sorbent-contacting operation, a catalytic riser crackin

A method for upgrading a high boiling portion of a topped crude oil comprising at least 100 ppm metal contaminants and porphyrins, asphaltenes and high molecular weight multi-ring hydrocarbon material in a combination process comprising a riser sorbent-contacting operation, a catalytic riser cracking operation, a downstream product recovery operation and a process steam generation operation, each contributing to the operating efficiency of the combination process which comprises, (a) charging a high boiling portion of a topped crude oil comprising metal contaminants in excess of 100 ppm Ni+V and steam in contact with a substantially inert fluidizable particulate sorbent at an elevated temperature and contact time in a riser contact zone sufficient to recover therefrom hydrocarbon products comprising; a fraction higher boiling than gasoline which fraction is reduced to a contaminating metals level of less than 100 Ni+V and a thermally produced naphtha product, (b) charging said high boiling hydrocarbon product comprising less than 100 ppm Ni+V contaminants in contact with a crystalline zeolite-containing cracking catalyst containing deposited metal contaminants in excess of 3000 ppm Ni+V in a separate high velocity riser cracking zone for a hydrocarbon residence time therein in the range of 0.5 to 3 seconds and at temperature conditions providing a riser outlet temperature within the range of 975°F. to 1050°F., (c) recovering products of said combination process comprising gasoline and lower boiling components separately from higher boiling liquid fuel products, (d) regenerating said inert solid particulate sorbent under conditions to produce a CO-rich flue gas by burning deposited carbonaceous material and to provide inert solids at a temperature sufficient to effect said riser sorbent contacting operation, (e) regenerating said crystalline zeolite-containing catalyst comprising carbonaceous deposits of said catalytic riser cracking operation under conditions to produce a CO-rich flue gas and provide high temperature catalyst particles suitable for recycle to said zeolite cracking operation, and (f) passing the CO-rich flue gases of each of said regeneration operations to parallel CO boilers for combustion jointly in parallel arranged steam generating CO combustion zones and recovering high pressure steam from said CO combustion zones.