Abstract: A process for separating the ortho-isomer from a feed mixture comprising at least two bi-alkyl substituted monocyclic aromatic isomers, including the ortho-isomers, the isomers having from 9 to about 18 carbon atoms per molecule. The process comprises contacting, at adsorption conditions, the feed with an adsorbent comprising a crystalline aluminosilicate consisting essentially of a sodium or calcium Y-type zeolite or sodium X-type zeolite which selectively adsorbs the ortho-isomers. The feed is removed from the adsorbent, and the ortho-isomers recovered by desorption at desorption conditions with a desorbent material comprising a C.sub.8 or heavier monocyclic aromatic with a boiling point at least 5.degree. C. different than that of the feed mixture when the adsorbent is the sodium Y-type zeolite, or a C.sub.8 or lighter monocyclic aromatic when the adsorbent is a sodium X or calcium Y-type zeolite.The process is particularly amenable to the employment of a simulated moving bed flow scheme.

Abstract: An improved process for separating ortho aromatic isomers from a feed stream containing a mixture of aromatics by contacting the feed stream with a bed of the crystalline aluminophosphate adsorbent AlPO.sub.4 -5. The adsorbed ortho aromatic isomers is removed from the adsorbent by desorption.

Abstract: The recovery of hydrocarbon values from high metals content feeds can be carried out more efficiently via supercritical extraction with recycle of a portion of the asphalt product and proper control of the use of countercurrent solvent flow to said extraction.

Abstract: Pressed objects (slugs) of pyrogenically produced oxides such as SiO.sub.2, Al.sub.2 O.sub.3 and TiO.sub.2 are produced using a silica sol and water. As molding assistants thereby there is employed a polyhydric alcohol, e.g. glycerine or sorbitol. The water can be added adsorbed on a pyrogenically produced hydrophobized silica. The pressed object obtained can be used inter alia as catalyst carrier.

Abstract: A process is disclosed for oxidizing difficultly oxidizable mercaptans contained in a hydrocarbon fraction which comprises adding a hydrocarbon soluble alkali metal compound, capable of forming the alkali metal mercaptides of the difficultly oxidized mercaptans, to the hydrocarbon fraction; and contacting the resulting hydrocarbon fraction containing the hydrocarbon soluble alkali metal compound with a metal chelate catalyst disposed on an adsorptive support in the presence of a hydrated oxygen-containing gas and in the absence of a separate water phase.

Abstract: A process is disclosed for the production of distillate in the catalytic cracking of gas oils utilizing a low acidity high silica-to-alumina ratio large pore zeolite which has been subjected to exchange with alkali metal ions at pH .ltoreq.7.

Abstract: A metallic chloride based creosote and soot removing composition including a phosphate corrosion inhibitor to reduce the corrosive attack on metal flue pipes is provided. The composition includes between about 15-60% metallic chloride, 20-60% trisodium phosphate dodecylhydrate, 15-60% anti-cake agents, such as non-swelling clay, sodium sulfate and tricalcium phosphate and 2-10% combustion initiator, such as wood flour.

Abstract: A catalyst comprising a catalytically active material composed of 1 to 20 parts by weight as V.sub.2 O.sub.5 of vanadium oxide, 99 to 80 parts by weight of anatase-type titanium oxide being porous and having a particle diameter substantially of 0.4 to 0.7 micron and a specific surface area of 10 to 60 m.sup.2 /g, and per 100 parts by weight of the sum of said two components, 0.01 to 1 part by weight as Nb.sub.2 O.sub.5 of niobium oxide, 0.05 to 1.2 parts by weight as an oxide of at least one ingredient selected from the group consisting of potassium, cesium, rubidium and thallium, and 0.2 to 1.2 parts by weight as P.sub.2 O.sub.5 of phosphorus, and a porous carrier having an alumina content of not more than 10% by weight, a silicon carbide content of at least 80% by weight and an apparent porosity of at least 10% supporting said catalytically active material thereon, wherein the total volume of pores having a diameter of 0.15 to 0.

Abstract: 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.

Abstract: A process for demetallation and desulfurization of resids by visbreaking an admixture of resids, particulate solids, and steam and/or hydrogen, and then subjecting the visbroken mixture to high temperature settling and separating to provide a first vapor product, a liquid product, and a recycled underflow solids stream. The process further comprises coking the liquid product to produce a second vapor product and coke and then distilling the combined first and second vapor products to yield a plurality of demetallized and desulfurized liquid hydrocarbon products. A fraction of the recycled underflow from the settler/separator is removed as a purge stream and burned for recovery of heat and metals. If hydrogen is used in the visbreaking step, the first vapor product is condensed to separate the hydrogen for recycling.

Abstract: Catalytically active amorphous silicas are prepared by dehydrating a silica hydrogel or precipitate prepared from an acidified aqueous silicate solution containing an amine of pK.sub.a above 10 or a cation containing either a nitrogen or phosphorus silica is catalytically active for, among other chemical reactions, the isomerization of ortho-xylene and the cracking of hydrocarbons.

Abstract: A method for the catalytic conversion of methanol and/or dimethyl ether to lower olefins with an aluminosilicate zeolite catalyst containing zirconium and/or hafnium together with manganese.

Abstract: An improved surge bin for a Lurgi-Ruhrgas process has baffles which promote uniform flow of feed material through the surge bin. Improved retorting of kerogen from oil shale is obtained. Stripping gas such as steam, is supplied to the surge bin. A separator has a large disengaging volume to remove entrained solid particles and improve the quality of the hydrocarbon product.

Abstract: Hydrocarbons are processed in a co-current flow packed catalyst bed reactor containing one or more redistribution means, e.g., redistribution screens, in the packed catalyst bed. If more than one redistribution means are used, they are spaced within the bed of catalyst over a predetermined distance. Optionally, the surface area of the redistribution means is less than the cross-sectional surface area of the reactor bed to allow for packing of a relatively smaller size solid particles, as compared to the rest of the catalyst in the bed, in the area between the edge of the redistribution means and the inner wall of the reactor means. The use of the redistribution means prevents channeling of the reactants near the reactor wall region, and assures uniform distribution of the reactants throughout the packed catalyst bed. The invention is applicable to relatively low velocity systems operating at liquid linear velocity of 0.3 cm/sec. or less.

Abstract: A process is disclosed for treating hydrocarbon streams such as naphtha by the oxidation of mercaptans into disulfide compounds which remain in the hydrocarbon stream. The conversion is effected during passage of the hydrocarbon and an aqueous stream downward through a cylindrical mass of liquid-liquid contact material. The liquids then flow through a cylindrical screen into an annular separation zone which surrounds a lower part of the contact material. After decantation in the separation zone, the aqueous material, which preferably contains the oxidation catalyst, is recycled.

Abstract: A process which effectively separates and recovers natural gas liquids from a natural gas stream containing nitrogen, regardless of the magnitude of the nitrogen concentration or changes in the nitrogen concentration.

Abstract: Regeneration of an aromatics processing catalyst is effected in the absence of a gas cooler and a gas-liquid separator with a continuous loop flow of an oxidizing gas stream by removing a portion of said continuous closed loop flow and introducing therein a quantity of a low moisture content molecular oxygen containing gas effective to maintain a molecular oxygen content no greater than 1.0 mole percent and a water partial pressure no greater than about 1.0 psi.

Abstract: A process for converting normally liquid hydrocarbons with an active fluid catalytic cracking catalyst which comprises:(a) passing an upflowing suspension of hot regenerated active fluid catalytic cracking catalyst in a lift gas comprising hydrocarbons including not more than 10 mole % C.sub.3 and heavier hydrocarbons through a lower portion of a vertically orientated riser conversion zone at a velocity of from about 1.8 to less than 12.2 meters per second, and for a residence time from about 0.5 to about 15 seconds, the ratio of catalyst to hydrocarbon in said lift gas being greater than 80; and(b) introducing the normally liquid hydrocarbons into the upflowing suspension at a locus in the riser conversion zone downstream of the lower portion to form a catalyst-hydrocarbon mixture wherein the temperature and residence time are sufficient to effect the desired conversion.The process is particularly useful for the treatment of a heavy residual feedstock.

Abstract: A process for converting or synthesizing hydrocarbons from carbon sulfides such as CS.sub.2 by catalytic hydrogenation over catalysts such ZSM-5 type zeolites.

Abstract: New catalysts, useful for performing hydrocarbons conversions such as reforming, production of aromatics, isomerization of paraffinic and aromatic hydrocarbons, hydrocracking, hydrodealkylation and steam-dealkylation, are formed of a carrier such as alumina and active elements comprising a noble metal of the platinum family, titanium, at least one metal selected from manganese, technetium and rhenium, and halogen, said catalysts being advantageously used as a moving bed.