Patents Represented by Attorney V. D. Harrison

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  • Removal of mercury from natural gas and liquid hydrocarbons utilizing downstream guard chabmer
    Patent number: 4709118
    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.
    Type: Grant
    Filed: September 24, 1986
    Date of Patent: November 24, 1987
    Assignee: Mobil Oil Corporation
    Inventor: Tsoung Y. Yan
  • Selective hydrogenation of acetylenic impurities in crude butadiene
    Patent number: 4704492
    Abstract: In a process wherein the vinyl acetylenes present as an impurity in a stream of butadienes are removed by hydrogenating the stream over a catalyst the loss of butadiene is lessened and catalyst aging is diminished by injecting the hydrogen in reduced quantities into a series of smaller catalyst beds connected in series.
    Type: Grant
    Filed: December 24, 1986
    Date of Patent: November 3, 1987
    Assignee: Mobil Oil Corporation
    Inventor: Margaret Nemet-Mavrodin
  • Recovery of mercury and heat energy from waste using fluidized beds
    Patent number: 4701212
    Abstract: Sulfur-impregnated activated carbon which has become spent by the absorption of mercury is made non hazardous for disposal purposes such as by burying. The spent carbon is at least partially combusted in a fluidized combustion zone. The solid residue is substantially reduced in mercury content. Combustion gases are cooled and condensed mercury is collected from the cooler.
    Type: Grant
    Filed: September 25, 1986
    Date of Patent: October 20, 1987
    Assignee: Mobil Oil Corporation
    Inventor: Tsoung Y. Yan
  • Method for determining effectiveness of catalytic dewaxing reactor
    Patent number: 4700562
    Abstract: The pour point of a catalytically dewaxed hydrocarbon oil is determined manually by the ASTM D-97-66 method and also by automatic apparatus such as the Herzog Electronic Pour Point Automatic MC 850 apparatus. A substantial divergence of the two indicates contamination by a waxy hydrocarbon oil such as the feedstock to the dewaxing process.
    Type: Grant
    Filed: January 8, 1986
    Date of Patent: October 20, 1987
    Assignee: Mobil Oil Corporation
    Inventors: Lawrence J. Altman, James B. Milliken