Abstract: Hydrolysis of COS in gas streams to H.sub.2 S and CO.sub.2 can be improved by using certain bicyclo tertiary amine catalysts. Bicyclo tertiary amine catalysts can enhance COS hydrolysis in an acid gas removal solvent in the liquid phase or on a solid support system in the gas phase.

Abstract: Wastewater is passed sequentially through an anaerobic treating zone and an oxic treating zone, followed by separation from the treated liquor of a dense sludge containing activated biomass, a least part of which is recycled to provide the activated biomass employed in treating the influent wastewater. Of the part of the sludge so recycled a minor portion is introduced into the anaerobic treating zone for admixture with the wastewater influent and the remaining major portion is introduced into the oxic treating zone, into which oxic zone oxygen-containing gas is admitted to effect oxygenation of the contents of that zone.

Abstract: Certain hydrogen phosphate and pyrophosphate compositions are employed as catalysts for organic condensation reactions. Particularly high conversions and selectivities are obtained by the use of synergistic mixtures of in cyclization reactions such as in the conversion of hydroxyethylpiperazine to triethylenediamine and morpholine to dimethylaminoethylmorpholine.

Abstract: This invention pertains to a Fischer Tropsch process for converting synthesis gas to an oxygenated hydrocarbon with particular emphasis on dimethyl ether. Synthesis gas comprising carbon monoxide and hydrogen are converted to dimethyl ether by carrying out the reaction in the presence of an alkali metal-manganese-iron carbonyl cluster incorporated onto a zirconia-alumina support.

Abstract: A continuous process is set forth for the production of oxygen from an oxygen containing gas stream, such as air, by contacting a feed gas stream with a molten solution of an oxygen acceptor to oxidize the acceptor and cyclically regenerating the oxidized acceptor by releasing oxygen from the acceptor wherein the oxygen-depleted gas stream from the contact zone is treated sequentially to temperature reduction by heat exchange against the feed stream so as to condense out entrained oxygen acceptor for recycle to the process, combustion of the gas stream with fuel to elevate its temperature and expansion of the combusted high temperature gas stream in a turbine to recover power.

Abstract: A vinyl acetate/ethylene copolymer emulsion exhibiting both partially- and fully-hydrolyzed polyvinyl alcohol compatibility which comprises an aqueous colloidal dispersion of a copolymer prepared by the emulsion polymerization of vinyl acetate and ethylene in the presence of a polyvinyl alcohol stabilizing system having an 8 to 10 mole % residual vinyl acetate content, especially comprising a mixture of a polyvinyl alcohol having a 3 to 6 mole % vinyl acetate content and a polyvinyl alcohol having a 10 to 14 mole % vinyl acetate content in a ratio that yields an average residual vinyl acetate content of 8 to 10 mole %. When blended with a partially- or fully-hydrolyzed polyvinyl alcohol to provided an adhesive composition, such compositions demonstrate an enhanced plasticizer thickening.

Abstract: This invention relates to reinforced tire utilizing polyurea or polyurethane formulations having low hysteresis. The polymer having low hysteresis is formed by reacting a prepolymer of an aromatic isocyanate and a high molecular weight difunctional polyol with a chain extender mix comprising an aromatic diamine and difunctional polyol. In these compositions the aromatic diisocyanate and aromatic diamine are selected so that there is substantial symmetry between the molecules. The reinforcement used is preferably an aromatic polyamide.

Abstract: A process is described for separating C.sub.4 + hydrocarbons in high recovery and high purity from a feed gas comprising about 0-5% C.sub.5 and heavier hydrocarbons, 1-10% C.sub.4 hydrocarbons, 0-10% C.sub.3 hydrocarbons, 0-10% C.sub.2 hydrocarbons and the balance CH.sub.4 and light inerts. Efficient separation is effected by using a dephlegmator cycle employing only internal refrigeration.

Abstract: A quick-coupling device is provided for suspending a rotatable work-holding fixture from a driving device. The driving device is supported from the free end of a cantilever beam attached to the inner face of a door hinged to the framework of a thermally insulated treating cabinet. The driving device has a downwardly extending power take-off shaft terminated in an enlarged plug portion peripherally bevelled to nest in a mating connector affixed to the work-holding fixture thereby forming a friction drive for said fixture. The connector has a C-shaped slot through which the plug can be passed to support the fixture at the nesting mated surfaces. The arrangement is particularly designed for use in impact blasting of coated articles in batch operation, in which the reduced loading time is a highly important consideration.

Abstract: An electrode for use in cutting or gouging workpieces underwater by means of an electric arc comprising a generally elongated porous substrate, with a circumferential recess proximate one end to form a snap-off end on the substrate. The substrate is covered with a combined electrical insulating and waterproof coating except for a portion of the end opposite the recess which is inserted into a suitable underwater torch. When the electrode is submerged it has complete waterproof integrity until the snap-off end is removed to allow the substrate to be brought in contact with the workpiece so that an arc may be struck and maintained between the substrate and the workpiece to achieve cutting or gouging.

Abstract: A method is disclosed for improving ignition time delay and carbon conversion efficiency in the combustion of coal water slurries wherein oxygen-enrichment of primary air is performed in the range of greater than 21% and up to 28%.

Abstract: A bakeable cryopump having a housing and means to removeably receive the displacer end of a cryogenic refrigerator to cool internal cryopanels said cryopumps adapted for removal of the refrigerator without loss of vacuum inside the cryopump and further adapted to be heated under vacuum to remove pumped gases primarily water so that the cryopumps after cooling can be used at vacuum of at least 10.sup.-10 Torr.

Abstract: In an injection well for underground gasification of carbonaceous materials, either liquids or solids, by partial combustion with oxygen-rich gas in the presence of a moderating fluid such as steam, air, CO.sub.2 or the like, in which the moderating fluid is introduced through an annular path surrounding the injection tube through which the oxygen-rich gas is injected, back flow of gasification products from the well is prevented by providing a flow restriction in the annular path to increase the linear flow velocity of the moderating fluid while maintaining the designed mass flow rate of said moderating fluid. The flow restriction is so designed that at the predetermined downward flow rate of said moderating fluid the critical velocity of the moderating fluid at the restriction corresponds to the formula:V.sub.c =.sqroot.gDwherein g is the gravity constant, D is the equivalent diameter of the largest opening in the restriction.

Abstract: A catalyst comprising a ruthenium carbonyl compound deposited on a cerium oxide-containing support material provides for the selective synthesis of low molecular weight olefinic hydrocarbons from mixtures of hydrogen and carbon monoxide.

Abstract: This invention relates to a distillation system for effecting separation of a multicomponent fluid and to an improved bubble-cap design which can accommodate very wide ranges of vapor and liquid loadings. A portion of the tray is provided with bubble caps having first and second slot openings with the second slot opening at an elevation higher than the first opening.

Abstract: A catalyst comprising a ruthenium carbonyl compound deposited on a cerium oxide-containing support material provides for the selective synthesis of low molecular weight olefinic hydrocarbons from mixtures of hydrogen and carbon monoxide.

Abstract: A process and system are set forth for precooling, liquefying and subcooling a methane-rich feed stream, such as natural gas, with two closed circuit multicomponent refrigerant cycles in which the first refrigerant comprises a binary mixture of propane and butane in a flash refrigeration cycle and the second refrigerant comprises a mixture of nitrogen, methane, ethane, propane and butane in a subcool refrigeration cycle. The first refrigerant preferably cools the feed stream in a plate and fin heat exchanger.

Abstract: A process is set forth for the recovery of methane, nitrogen and natural gas liquids (C.sub.2+) from a natural gas feed stream wherein the recovery can be made at high pressure by the integration of a nitrogen rejection stage including a heat pump driven distillation column and a natural gas liquids stage. Nitrogen can be rejected over a wide range of nitrogen concentration (approximately 1 to about 80%) of the feed stream.

Abstract: Aqueous vinyl ester/ethylene copolymer emulsions possessing good dry pick and wet pick strengths in paper coating compositions comprise a vinyl ester/ethylene copolymer colloidally dispersed in an aqueous medium, the copolymer consisting essentially of (a) a vinyl ester of a C.sub.1 -C.sub.12 alkanoic acid, (b) about 0.5 to 15 wt % ethylene, (c) about 0.1 to 10 wt % of an ethylenically unsaturated mono- or dicarboxylic acid or half ester thereof, (d) about 0.05 to 10 wt % of a dicyclopentadienyl acrylate, and (e) 0-50 wt % of an alkyl acrylate.

Abstract: A process for preparing predominantly noncyclic polyalkylene polyamine compounds is disclosed wherein an alkanolamine compound is reacted with an alkyleneamine compound optionally with ammonia or a primary or secondary amine in the presence of a catalytically effective amount of a catalyst containing phosphoric acid incorporated onto an inert support at a temperature from about 175.degree. to 400.degree. C. under a pressure sufficient to maintain a substantial amount of the ammonia or amine in the reaction zone.