Abstract: A premium coke is made by the delayed coking of a blend of pyrolysis tar and hydrotreated decant oil.

Abstract: A partition (51, 52, 53) is provided within a vessel (1) for dividing the vessel into two along the vertical direction of the vessel except upper and lower portions thereof. The vessel (1) contains polishing particles (4). A cleaning liquid sprayer (8) is provided in the upper portion of the vessel (1). A discharge opening (2, 3) is provided in a lower portion of the vessel (1) for discharging the cleaning liquid passing through the perforated plate (2). Vibrators (71, 72) are mounted on the brackets (61, 62) to the wall of the vessel (1) for vibrating the vessel so as to generate convection currents of the polishing particles (4) in such a manner that polishing particles flow downward on one side of the partition (51, 52, 53) and upward on the other side thereof.

Abstract: Phosphine impurities are effectively removed from higher olefin products containing such impurities by treatment of the olefin with a macroreticular cation exchange resin in the acid form. The invention is particularly useful in removing phosphine catalyst residues from the C.sub.6 and higher mono-olefin products of ethylene oligomerization reactions.

Abstract: In a hydrofining process, the life of a catalyst composition comprising a support selected from the group comprising alumina, silica and silica-alumina and a promoter comprising at least one metal selected from Group VIB, Group VIIB, and Group VIII of the periodic table is improved by mixing a decomposable compound of molybdenum with the hydrocarbon-containing feed stream prior to contacting the hydrocarbon-containing feed stream with the catalyst composition. The molybdenum in the decomposable compound is in valence state of zero. A sufficient quantity of the decomposable compound of molybdenum is added to the hydrocarbon-containing feed stream to result in a concentration of molybdenum in the range of about 1 to about 60 ppm. The introduction of the decomposable compound of molybdenum may be commenced when the catalyst is new, partially deactivated or spent with a beneficial result occurring in each case.

Abstract: A process for enhancement of the cetane number of a diesel fuel which in one embodiment comprises:(1) treating a diesel oil with a nitrogenous treating agent in a nitrogen amount, equivalent on a 100% nitric acid basis, to about 10 weight percent or less of the diesel oil feed;(2) separating unreacted nitrogenous treating agent from the diesel oil of step (1);(3) treating the diesel oil of step (2) with an inorganic alkali to produce a treated diesel oil; and(4) blending the treated diesel oil of step (3) with an untreated diesel oil to produce a blended diesel fuel such that the added nitrogen content in the blended diesel fuel is(a) about 300 ppm or less of nitrogen added when the diesel oil treated in step (1) is obtained from virgin diesel oil stock; or(b) about 450 ppm or less of nitrogen added when the diesel oil treated in step (1) is obtained from hydrotreated diesel oil stock.

Abstract: A catalystic composition suitable for producing acrylonitrile from propylene, ammonia and oxygen (or oxygen-containing gas), which composition is represented by the following formula:(Mo).sub.a (W).sub.b (Bi).sub.c (Pb).sub.d (B).sub.e (Sb).sub.f (X).sub.g (O).sub.h(where: X is chromium or iron; a, b, c, d, e, f, g and h denote respectively number of atoms for molybdenum, tungsten, bismuth, lead, boron, antimony, X and oxygen, and wherein, if it is given that a+b=12, 0.ltoreq.b.ltoreq.7, 0.4.ltoreq.c.ltoreq.7, 2.ltoreq.d.ltoreq.12, 0.2/22.ltoreq.e/a.ltoreq.40/22, 0.ltoreq.f/a.ltoreq.25/22, and 0.ltoreq.g/a.ltoreq.3/22; and h denotes the number of oxygen necessary for satisfying the atomic valence for the individual constituent elements other than oxygen).

Abstract: Improved supported, mixed-metal oxide oxidation catalysts are prepared by conditioning a devolatilized catalyst precursor with an alcohol prior to calacining the precursor to a finished catalyst. For example, a promoted bismuth phosphomolybdate oxidation catalyst useful for converting propylene to acrolein demonstrates enhanced performance characteristics when the devolatilized catalyst precursor is subjected to boiling ethanol prior to calcining it to a finished catalyst.

Abstract: A hydrotreating (hydrovisbreaking) process comprises the step of contacting under suitable reaction conditions (A) a substantially liquid hydrocarbon-containing feed stream which contains more than 0.1 weight-% Ramsbottom carbon residue, (B) a free hydrogen-containing gas and (C) a catalyst composition comprising alkyl molybdate and/or molybdenum sulfonate.

Abstract: Hydrocarbon liquids an gas, particularly gas to be processed in LNG plants, are treated to remove mercury by contacting them with free bismuth or tin or a mixture of these on silica, alumina, or other type of non-reactive base. The sorbent is prepared by milling together the oxide of bismuth or tin and the silica or alumina base and subsequently reducing the oxide in a heated reducing atmosphere.

Abstract: A liquefaction process for coal lignite or heavy oil is disclosed utilizing a hydrogen-donor solvent. The preferred hydrogen-donor solvent is recovered as a vapor from the liquefaction mixture. The preferred method for converting the vapor into active hydrogen-donor solvent form involves passage of the vapor over a catalyst bed positioned in the vapor space of the catalyst vessel. Novel apparatus for so positioning the catalyst bed is also disclosed.

Abstract: Hydrocarbon feedstocks containing relatively high levels of nitrogen contaminants are converted by catalytic cracking to products of lower average molecular weight by contacting the feedstock with a mixture of a cracking catalyst and separate particles of a nitrogen scavenger. The nitrogen scavenger is a particulate solid acid capable of sorbing pyridine at room temperature and retaining greater than about 5 weight percent of the sorbed pyridine after heating in a vacuum to about 300.degree. C. Examples of the nitrogen scavengers that can be used in the process include amorphous aluminosilicates, nonzeolitic molecular sieves such as pillared clays and delaminated clays, and zeolitic molecular sieves.

Abstract: Useful cracking catalysts and catalyst supports comprising silica supported on a boehmite-like surface are prepared by compositing particles of silica or hydrated silica with particles of porous boehmite and subjecting the resulting composite to high temperature steaming at a temperature of at least about 600.degree. C. for a time sufficient to disperse at least a portion of the silica over the boehmite surface as the boehmite converts to .gamma.-Al.sub.2 O.sub.3. The silica wets, spreads out and reacts with the surface hydroxyl groups of the transforming boehmite.

Abstract: An improved olefin disproportionation catalyst produced by contacting (a) molybdenum or tungsten oxide supported on inorganic refractory oxide, and (B) a metal dithionite.

Abstract: A process for production of alkali metal polyphosphates and/or pyriphosphates from an alkali metal orthophosphate comprises acidifying said orthophosphate with sulphuric acid, and then either(a) heating the reaction mixture to produce the desired products, and recovering said products from the reaction mixture, or(b) separating an intermediate from the reaction mixture, and heating the intermediate to form a desired product.The products are suitable for incorporation into detergents and soap powders.

Abstract: The invention relates to a process for the decarbonation of minerals, in powdered form, in a fluidized bed. For example, the process applies to the production of quick lime and/or magnesia from lime stone and/or dolomite fines which are not rendered sufficiently valuable at present.The process comprises recycling a portion at least of the carbon dioxide produced to be used as sole fluidizing gas, the fluidized bed being heated to the desired decarbonation temperature by direct heat supply within the fluidized bed by means of electric devices.Production of decarbonated minerals and of CO.sub.2.

Abstract: Formaldehyde is made from methane and a molecular oxygen containing gas by using a silica supported catalyst having less than 350 parts per million by weight of sodium and having a catalytically effective amount of MoO.sub.3. The low sodium form of the silica support can be made by washing silica gel or precipitated silica, by using a fumed silica or by making an ultrapure form of silica having a silica purity of at least 99.99% silica. The ultrapure form can be made by the hydrolysis of silicon tetraalkoxides. In general, the lower the sodium level, the better is the catalyst.

Abstract: A process is disclosed for treating a sour hydrocarbon stream comprising extracting the mercaptans contained in said hydrocarbon stream with an alkaline solution in an extraction zone, oxidizing the mercaptans to disulfides in the presence of an oxidation catalyst, separating said disulfide from said alkaline solution, reducing the residual disulfides in said alkaline solution to mercaptans and recycling said alkaline solution to the extraction zone. Two ways are disclosed to effect the reduction of the disulfides to mercaptans: (1) hydrogenation with a supported metal catalyst and (2) electrochemical reduction.

Abstract: Hydrocarbon feeds are upgraded by contacting same, at elevated temperature and in the presence of hydrogen, with a self-promoted catalyst prepared by heating one or more water soluble catalyst precursors in a non-oxidizing atmosphere in the presence of sulfur at a temperature of at least about 200.degree. C. The precursors will be one or more compounds of the formula ML(Mo.sub.y W.sub.1-y O.sub.4) wherein M is one or more promoter metals selected from the group consisting essentially of Mn, Fe, Co, Ni, Cu, Zn and mixtures thereof, wherein O.ltoreq.y.ltoreq.1 and wherein L is a nitrogen containing, neutral multidentate, chelating ligand. In a preferred embodiment the ligand L will comprise one or more chelating alkyl di or triamines and the non-oxidizing atmosphere and to form the catalyst will comprise H.sub.2 S.

Abstract: A colloidal hydrosilylation catalyst is provided by effecting reaction between a silicon hydride or a siloxane hydride and a Pt(O) or Pt(II) catalyst. The colloidal catalyst forms stable mixtures with olefinically unsaturated organopolysiloxanes.

Abstract: A process for removing layers of paint or other non-metallic coatings from a coated metal hanger or the like comprising the steps of freezing the coating to embrittle it and shrink it toward the metal hanger, heating the metal hanger without heating the coating to expand the metal toward the coating, and stressing the coating by said expanding and shrinking to break and fragment the coating and cause it to fall off the metal hanger.