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    • 13. 发明专利
    • FIBROUS THERMAL INSULATION AND METHOD FOR PREPARING SAME
    • GB1342696A
    • 1974-01-03
    • GB1027872
    • 1972-03-06
    • ATOMIC ENERGY COMMISSION
    • C04B30/02F16L59/00C10G43/02
    • 1342696 Thermal insulation UNITED STATES ATOMIC ENERGY COMMISSION 6 March 1972 [7 April 1971] 10278/72 Heading C1J Thermal insulation for use at high temperatures and having a density of 10-25 pounds per cubic foot is made by moulding a slurry of inorganic fibres, impregnating the moulded fibres with an organic sol binder, gelatinizing the sol, curing the gelatinized binder, drying the composite and heating it under oxidizing conditions. A slurry of silica fibres is moulded under vacuum and the impregnated under vacuum with a silica sol in water or an ethanolwater mixture, the impregnated fibres are treated with ammonium carbonate, sodium hydroxide or gaseous ammonia to gelatinize the binder, the composite is then cured in an air-tight bag at 95‹ C., dried at 95‹ C. and fired in air at 1000‹ C. The silica sol can be formed by hydrolysing a chloride, fluoride or ester of orthosilicic acid, e.g. ethyl silicate, or by the ionexchange removal of sodium from a sodium silicate solution. Titanium dioxide particles of 1 to 5 microns can be incorporated as an opacifier by mixing them with the slurry of fibres to be moulded. Composites can also be made from a slurry of zirconia fibres using a gelatinizable sol of zirconia as the binder.
    • 15. 发明专利
    • DE1919664A1
    • 1970-10-22
    • DE1919664
    • 1969-04-18
    • EDELEANU GMBH
    • HERMANN FRANZ DIPL-CHEM DRKUNERT MAX
    • C10G33/06C10G73/42C10G43/02
    • 1292517 Urea adducts EDELEANU GmbH 8 April 1970 [18 April 1969] 16751/70 Heading C5E An emulsion, comprising a paraffin and an aqueous solution of urea and formed in the decomposition of a urea adduct produced in the separation of n-paraffins from a hydrocarbon mixture diluted with an oil solvent, is treated by feeding water into a stream of the emulsion, feeding oil solvent into the stream downstream of the water feed, passing the resultant feed through a filter and allowing the filtered stream to settle and separate into an aqueous urea layer and a layer of paraffin-containing oil solvent. The aqueous urea layer can be used for the decomposition of urea adduct or concentrated and used for the formation of the urea adduct; the paraffin-containing oil solvent layer can be used to dilute the hydrocarbon mixture prior to adduct formation. A suitable filter is a cartridge of sintered metal balls. One volume of spindle oil is diluted with 2 volumes of dichloromethane and stored at 30-40‹ C. with 1 volume of an aqueous urea solution saturated at 70‹ C., the solid adduct formed is separated and decomposed at 85‹ C. with water to form an upper layer of n-paraffins, a lower layer of aqueous urea and an intermediate layer of emulsion.
    • 19. 发明授权
    • Modification of particle hardness in waxy crude oil slurries
    • 蜡质原油浆液中颗粒硬度的改性
    • US3900041A
    • 1975-08-19
    • US46896974
    • 1974-05-13
    • MARATHON OIL CO
    • KERSCH KEITH MPOUSKA GEORGE ADRAYER DENNIS ETACKETT JR JAMES E
    • F17D1/08F17D1/16B65G53/30C10G43/02
    • F17D1/088
    • Previously, waxy crude oils have been fractionated into a wax fraction and a liquid fraction; the wax fraction formed into particles and slurried into the liquid fraction for transportation in pipelines. Particle stability is enhanced by extruding molten wax without substantial crystalline structure into a hot wax immiscible fluid flowing cocurrent to the extruded wax and under conditions which will quickly form a smooth shell, and thereafter cooling to form hard, smooth spheres which resist mechanical degradation and which further approach a stabilized, or maximum, pressure drop at a slower rate than non-hardened particles. This treatment results in a particle which can be pumped in a pipeline at heavier particle loadings or with less pressure.
    • 以前,蜡质原油已经分馏成蜡馏分和液体馏分; 蜡馏分形成颗粒并浆化成用于在管道中运输的液体馏分。 通过将不具有实质的晶体结构的熔融蜡挤出到与挤出的蜡并流流动的热蜡不混溶的流体中并在快速形成光滑的壳体的条件下,并且随后冷却以形成抵抗机械降解的硬的,平滑的球体,从而增强颗粒稳定性, 进一步接近以比非硬化颗粒更慢的速率稳定或最大的压降。 这种处理产生的颗粒可以以更重的颗粒负载或更小的压力在管道中泵送。