Patents Represented by Attorney Van D. Harrison, Jr.

Find this attorney in the Justia Lawyer Directory

  • Treating foul refinery waste waters with absorber gas
    Patent number: 3984316
    Abstract: Refinery waste waters containing dissolved hydrogen sulfide and ammonia are stripped of hydrogen sulfide by a countercurrent stream of refinery absorber gas which removes substantially all of the hydrogen sulfide and none of the ammonia. The dissolved ammonia is subsequently removed by steam stripping, leaving a waste water sufficiently clean to be non-polluting.
    Type: Grant
    Filed: July 30, 1975
    Date of Patent: October 5, 1976
    Assignee: Ashland Oil, Inc.
    Inventors: George I. Worrall, Donald A. Strege, George D. Myers
  • Method and catalyst for removing mercaptans and mercaptide compounds from aqueous alkaline solutions
    Patent number: 3980582
    Abstract: Disclosed is a catalyst and method for converting mercaptans and mercaptide compounds in aqueous alkaline solution to disulfides. Catalytic agent is metal compound of tetrapyridinoporphyrazine (TPPA) preferably impregnated on an inert granular support. Method comprises contacting mercaptans and mercaptide compounds in aqueous alkaline solution with air in the presence of the catalyst and subsequently separating alkaline solution from the resultant disulfide compounds.
    Type: Grant
    Filed: March 3, 1975
    Date of Patent: September 14, 1976
    Assignee: Ashland Oil, Inc.
    Inventors: Gilbert P. Anderson, Jr., Clifford Ward
  • Method for preparing graphite articles
    Patent number: 3957957
    Abstract: Graphite products particularly suited for use in nuclear reactors are prepared by combining thermal petroleum pitch and particulated coke made from the same pitch into a moldable composition. The composition is molded into a desired shape. The shape is baked, impregnated with additional pitch, baked further, and then heated to temperatures sufficient to graphitize it. For nuclear applications a petroleum pitch low in sulfur content is preferred.
    Type: Grant
    Filed: May 30, 1974
    Date of Patent: May 18, 1976
    Assignee: Ashland Oil, Inc.
    Inventors: John W. Newman, Charles D. Hoertz, Jr.
  • Selective hydrogenation of aromatics and olefins in hydrocarbon fractions
    Patent number: 3943053
    Abstract: Hydrocarbon fractions boiling between 180.degree. and 600.degree.F. and containing aromatics, olefins, and sulfur and nitrogen compounds are hydrogenated with a platinum-palladium catalyst to reduce the concentration of aromatics and olefins. The catalyst is prepared by saturating a porous inert carrier, preferably alumina, with an aqueous acid solution of chloroplatinic acid and palladium (ous) chloride in a specified mole ratio of platinum to palladium. The saturated carrier is subsequently dried, calcined and reduced.
    Type: Grant
    Filed: October 4, 1974
    Date of Patent: March 9, 1976
    Assignee: Ashland Oil, Inc.
    Inventors: Stephen M. Kovach, George D. Wilson