Abstract: A process for producing distillate boiling range streams that are low in both sulfur and aromatics. A distillate feedstock is treated in a first hydrodesulfurization stage in the presence of a hydrogen-containing treat gas and a hydrodesulfurization catalyst, thereby resulting in partial desufurization of the stream. The partially desulfurized distillate stream is then treated in a second hydrodesulfurization stage, also in the presence of a hydrogen-containing treat gas and a hydrodesulfurization catalyst. The hydrogen-containing treat gas is cascaded from the next downstream reaction stage, which is an aromatics hydrogenation stage.

Abstract: A process for hydroprocessing liquid petroleum and chemical streams in two or more hydroprocessing stages wherein the liquid and vapor products from the first stage are sent to a separation zone wherein a liquid phase fraction is separated from a vapor phse fraction which contains vaporized heary hydrocarbon components. The vapor phase fraction is passed to a sorption zone wherein at least a portion of the heavy hydrocarbon components is removed. Both the liquid phase fraction and the sorbed heavy hydrocarbon components are sent to at least one additional hydroprocessing stage.

Abstract: A hydroprocessing process includes two hydroprocessing reaction stages, both of which produce a liquid and a vapor effluent, and a liquid-vapor contacting stage. The first stage vapor effluent contains impurities, such as heteroatom compounds, which are removed from the vapor by contact with processed liquid effluent derived from one or both reaction stages and, optionally, also liquid recovered from processed vapor. The first and contact stage liquid effluents are passed into the second stage to finish the hydoprocessing. The contact and second stage vapor effluents are cooled to recover additional hydroprocessed product liquid.

Abstract: Hydrocarbon feeds are upgraded by contact of the stream under hydrodesulfurization (HDS) conditions with a catalyst system comprising a sulfided, transition metal promoted tungsten/molybdenum HDS catalyst, e.g., Ni/Co--Mo/Al.sub.2 O.sub.3 and a solid acid catalyst which is effective for the isomerization/disproportionation/transalkylation of alkyl substituted, condensed ring heterocyclic sulfur compounds present in the feedstream, e.g. zeolite or a heteropolyacid compound. Isomerization, disproportionation and transalkylation reactions convert refractory sulfur compounds such as 4- or 4,6-alkyl dibenzothiophenes into corresponding isomers or disproportionated isomers which can be more readily desulfurized by conventional HDS catalysts to H.sub.2 S and other products.

Abstract: Disclosed is a catalytic process for hydroconverting heavy hydrocarbonaceous feedstocks to lower boiling products wherein a catalyst precursor concentrate or catalyst concentrate is first prepared in a heavy oil medium then fed to a hydroconversion zone which may also contain a supported hydrotreating catalyst. The hydroconversion zone may be operated in either slurry or ebullating bed mode.

Abstract: Disclosed is a process for converting heavy hydrocarbonaceous feedstock to more valuable products. The feedstock is introduced into a coking unit containing a coking zone and a scrubbing zone. The bottoms fraction from the scrubbing zone is passed through a microfiltration unit, thus removing fine coke particles which are recycled to the coking zone. The substantially solids-free filtrate is hydrotreated, then passed to a catalytic cracking unit.

Abstract: Disclosed is a process wherein a scrubber bottom stream from a fluid coker is departiculated by passing it through a microfiltration system. The substantially solids-free filtrate is then upgraded by hydrotreating.

Abstract: A slurry catalytic hydroconversion process comprising at least two hydroconversion zones is provided in which the heavy hydrocarbonaceous fresh oil feed is added to more than one hydroconversion zone. Additional portions of catalysts or catalyst precursors are also added to the first hydroconversion zone and to additional hydroconversion zones.

Abstract: A slurry catalytic hydroconversion process comprising at least two hydroconversion zones is provided in which the heavy hydrocarbonaceous fresh oil feed is added to more than one hydroconversion zone. Additional portions of catalysts or catalyst precursors are also added to the first hydroconversion zone and to additional hydroconversion zones wherein said additional hydroconversion zones are maintained at a temperature of at least 10.degree. F. higher than an immediate preceding hydroconversion zone.

Abstract: An improved method of preparing a catalyst from a catalyst precursor concentrate is provided. The catalyst precursor concentrate, which is preferably phosphomolybdic acid, is treated at relatively low pressures in a specified manner.

Abstract: Hydroconversion processes utilizing a catalyst prepared from a catalyst precursor concentrate such as phosphomolybdic acid, is provided. The catalyst precursor concentrate is treated at relatively low pressures in a specified manner.

Abstract: A slurry hydroconversion process is provided in which a catalyst precursor concentrate comprising an aqueous solution of phosphomolybdic acid and a heavy oil is contacted with hot hydrogen to vaporize the water from the concentrate. The resulting catalyst precursor concentrate is introduced into a hydrocarbonaceous chargestock and the resulting mixture is heated in the presence of added hydrogen to convert the phosphomolybdic acid to a solid molybdenum-containing catalyst. The resulting slurry is subjected to hydroconversion conditions.

Abstract: A container filled with a freezable liquid for use in refrigerating or temporarily cooling purposes. The container of the invention is generally rectangular and has two plugs each on its face and one side. Opposite these plugs and in contra position to the plugs, on the back and other side of the container, are corresponding recesses. The recesses and plugs are formed in order that the plugs of one container fit into the recesses of a like container, thus allowing the containers to be fastened together. Thus, when filled with freezable liquid and frozen, two or more containers may be connected, at either their sides or face-to-back, to form blocks of frozen containers.

Abstract: A process for the optomization of the amount of sulfur introduced into a cyclic, or semi-cyclic reforming unit consistant with the dual objective of sulfiding a sulfur-sensitive polymetallic platinum catalyst, and minimizing the average sulfur present in the unit during an operating cycle. In accordance with such process, a sulfur-containing naphtha feed between reactor swings is first hydrofined to reduce the sulfur content of the feed, the product therefrom is then passed through a guard bed or reactor and contacted with a sulfur adsorbent essentially completely remove the feed sulfur to maximize catalyst activity, catalyst stability and C.sub.5.sup.+ liquid yield.

Abstract: A staged hydrocarbon hydroconversion process is provided in which a portion of the product boiling up to an atmospheric pressure distillation cut point of about 1050.degree. F. is removed between the stages and in which the first stage is operated at lower severity than the second stage.

Abstract: The liquid product of a slurry hydrogen treating zone is separated into fractions in the same separation zone used to obtain the heavy hydrocarbonaceous oil fraction used as feed for the hydrogen treating zone. A separate portion of coarser solids is withdrawn from the hydrogen treating zone.