Mobil Oil Corporation

Donald M Nace

Paul H Schipper

William E Garwood

Frederick J Krambeck

Benjamin Gross

Solomon M Jacob

Sterling E Voltz

Hartley Owen

Nai Y Chen

Samuel A Tabak

Robert A Ware

Ajit V Sapre

Clinton R Kennedy

James C Kuo

Tiberiu M Leib

Anthony Y Kam

Anil B Ketkar

W Rodman Derr, Jr

A process for thermally and catalytically upgrading a heavy feed in a single riser reactor FCC unit is disclosed. A heavy feed is added to a blast zone in the base of the riser, and sufficient hot regenerated FCC catalyst is added to induce both thermal and catalytic cracking of the heavy feed. A reactive quench material, which cools the material discharged from the blast zone is added to a quench zone downstream of the blast zone, to reduce temperature at least in part by undergoing endothermic reactions in the riser. Quench liquids can be distillable FCC feeds such as gas oil, slack wax, or alcohols or ethers. The quench material is added in an amount equal to 100 to 1000 wt % of the non-distillable material in the heavy feed. A preferred catalyst, with a high zeolite content, is used which retains activity in the quench despite initial contact with the heavy feed, which tends to overwhelm conventional FCC catalysts.

Catalytic cracking of coke producing hydrocarbons

An apparatus and process for catalytically upgrading an FCC effluent is described, wherein the FCC effluent is contacted with a shape-selective catalyst at low severity conditions prior to fractionation.

Catalytic upgrading of FCC effluent

Heavy oils are simultaneously subjected to cracking and dewaxing in the absence of added hydrogen using a catalyst comprising Zeolite Beta and an X or Y or other faujasite zeolite. The process is able to effect a bulk conversion of the oil, while, at the same time, yielding a higher octane gasoline, increased yields of C.sub.3 and C.sub.4 olefins, and a low pour point distillate product.

Catalytic cracking with a mixture of faujasite-type zeolite and zeolite

The waxy liquid phase of an oil suspension of Fischer-Tropsch catalyst containing dissolved wax is separated out and the wax is converted by hydrocracking, dewaxing or by catalytic cracking with a low activity catalyst to provide a highly olefinic product which may be further converted to premium quality gasoline and/or distillate fuel.

Process for upgrading wax from Fischer-Tropsch synthesis

Process for reduction of sulfur oxides emissions to the atmosphere from FCC regenerators. Spent FCC cracking catalyst containing sulfur and coke deposits is stripped at 500.degree. to 700.degree. C. for 1 to 10 minutes with steam to remove at least a portion of said sulfur deposits from said catalyst prior to catalyst regeneration.

Fluidized catalytic cracking process with long residence time steam

The specific disclosure is directed to a catalytic cracking model wherein the reactant and product species are lumped according to molecular type and boiling range. The specific invariant lumping scheme includes paraffins, naphthenes, aromatic rings, and aromatic substituent groups.

Simulation of catalytic cracking process

The fluid catalytic cracking of a residual oil fraction comprising metal contaminants and/or asphaltene type coke formers is processed by injecting the oil into the upper portion of a riser cracking operation under conditions to effect partial conversion thereof over a catalyst inactivated by carbonaceous deposits. A 650.degree.0 F. plus product of the low severity cracking is passed in contact with freshly regenerated catalyst under conditions of high conversion severity in the lower portion of the riser.

Processing hydrocarbon feed of high carbon residue and high metals

A process combination is described for upgrading a gasoline product of fluid cracking by treatment with a ZSM-5 catalyst wherein the cracking operation is performed under conditions to provide a depentanized gasoline product of cracking containing not more than 15 wt.% olefins before ZSM-5 treatment thereof for octane improvement.

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Woodbury, NJ, United States of America

Donald M Nace