Abstract: The conversion of methanol to gasoline boiling hydrocarbons of low durene content is accomplished with a ZSM5 crystalline zeolite alone or supported by a binder-matrix material comprising primarily materials other than alumina.

Abstract: A combination operation is described and method for upgrading C.sub.2 -C.sub.5 olefin rich streams with selective crystalline zeolite compositions in a fluidized catalyst system at relatively low pressures by reaction with hydrogen or a carbon-hydrogen fragment contributor, such as methanol, to form gasoline and light fuel oil boiling range products.

Abstract: A refinery process is described for converting desalted full range crude oils and syncrudes derived from coal, shale and tar sands. The process involves mixing and reacting the full range heavy oil feed with a low molecular weight carbon-hydrogen fragment contributor such as methanol or C.sub.2 -C.sub.5 olefins in the presence of a fluid zeolite cracking catalyst comprising mordenite.

Abstract: A method is described for converting nitrogen containing oil stock such as shale oil syncrudes or other stocks of high nitrogen level by cracking in the presence of C.sub.2 to C.sub.5 hydrocarbons and/or methanol with an acidic zeolite cracking catalyst. Cocracking of the high nitrogen stock with the carbon-hydrogen contributors provides appreciable denitrogenation of the charge thus decreasing the need for hydroprocessing the charge with attendant savings in operating costs.

Abstract: A fluid catalytic cracking - catalyst regeneration system is described wherein regeneration of a crystalline zeolite hydrocarbon conversion catalyst is accomplished at an elevated temperature in the presence of regenerated catalyst mixed therewith in the upper portion of a bed of regenerated catalyst with the mix ratio controlled as a function of the amount of primary regeneration gas introduced to a lower portion of the bed of regenerated catalyst.

Abstract: Methanol is converted in a plurality of conversion zones at temperatures selected from within the range of 500.degree. to 1200.degree.F. and reactant residence time within the range of 0.5 to 60 seconds in the presence of crystalline zeolite containing catalyst to particularly form products of desired volatility and octane in the gasoline boiling range. The distribution of methyl groups on C.sub.6 + aromatics formed in the process to desired products is particularly accomplished under selected temperature and reactant contact time conditions.

Abstract: Residual oils are upgraded to lube oil base stocks by a combination process involving deasphalting, solvent extraction and hydrocracking arranged to particularly promote the efficient production of lube oil products.

Abstract: Heavy hydrocarbon feeds are dispersed in solvent ethers and product recycle fraction prior to catalytic cracking thereof with acidic compositions comprising particular crystalline zeolite catalyst composition. The solvent ethers are provided by reacting process olefins with methanol to produce low and high molecular weight ethers separately.

Abstract: Gasoline product of cracking desulfurized with a selective desulfurizing catalyst by processing particularly a high boiling portion thereof to minimize hydrogenation of desired olefins in the gasoline product of cracking.

Abstract: A raffinate product of residual oil solvent extraction is upgraded in a fluid zeolite catalyst cracking operation in the presence of one or more low molecular weight carbon-hydrogen fragment contributors. Gas oil products of atmospheric and vacuum distillation may be simultaneously converted by admixture with the raffinate charge. In addition the process is enhanced by the addition of straight run naphtha product of distillation with the raffinate charge.

Abstract: Upgrading a full boiling range naphtha by the combination of reforming only a low boiling portion of the naphtha followed by contacting the reformate product thereof combined with the high boiling portion of the naphtha over a ZSM-5 type catalyst conversion operation is described.

Abstract: 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.

Abstract: A process is described for the production of aromatics boiling in the gasoline boiling range from methanol carried out in two stages wherein a heat dissipating diluent is employed in the second stage during contact with a crystalline zeolite catalyst selective for the purpose and the first stage exothermic temperature rise is catalytically restricted.