Patents by Inventor Harold Unger

Harold Unger has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Hydrogenation of high boiling hydrocarbons
    Patent number: 4411768
    Abstract: In a hydrogenation operation employing an ebullated catalytic bed, recycle is recovered from the hydrogenated product with at least 25%, by volume, of the recycle boiling above 950.degree. F. The recycle is cooled to a temperature of from 350.degree. to 600.degree. F. to separate coke precursors, prior to recycle to the hydrogenation. Higher conversion levels can be achieved by effecting recycle in such manner.
    Type: Grant
    Filed: April 21, 1982
    Date of Patent: October 25, 1983
    Assignee: The Lummus Company
    Inventors: Harold Unger, Morgan C. Sze, Roger P. Van Driesen
  • Feedstock treatment
    Patent number: 4199434
    Abstract: A pyrolysis fuel oil is treated by soaking in the presence of sulfur for a period of time sufficient to react the highly unsaturated compounds present in the oil, followed by heating the soaked fuel oil at a temperature of from 850.degree. F. to 1100.degree. F. and an outlet pressure of from 300 to 600 psig to provide a treated feed having an API gravity of -3.degree. or less. The feed may be employed for the production of needle coke and/or carbon black and/or electrode binder pitch.
    Type: Grant
    Filed: February 13, 1978
    Date of Patent: April 22, 1980
    Assignee: The Lummus Company
    Inventors: Morgan C. Sze, Thomas M. Bennett, Harold Unger
  • Production of formaldehyde in carbon steel reactors
    Patent number: 3965194
    Abstract: A carbon steel reactor can be used for producing formaldehyde from methanol by passivating the reactor with respect to formic acid production by treatment with either hydrogen sulfide in the absence of oxygen or a mixture of sulfur dioxide and oxygen.
    Type: Grant
    Filed: October 19, 1973
    Date of Patent: June 22, 1976
    Assignee: The Lummus Company
    Inventors: Morgan C. Sze, Harold Unger
  • Hydrogenation of high boiling hydrocarbons
    Patent number: RE32265
    Abstract: .[.In a hydrogenation operation employing an ebullated catalytic bed, recycle is recovered from the hydrogenated product with at least 25%, by volume, of the recycle boiling above 950.degree. F. The recycle is cooled to a temperature of from 350.degree. to 600.degree. F. to separate coke precursors, prior to recycle to the hydrogenation. Higher conversion levels can be achieved by effecting recycle in such manner..]..Iadd.Disclosed is a hydrogenation process using at least one fluidized catalytic stage and a recycle material of heavy hydrogenated effluent. The heavy effluent material is cooled to a temperature within 350.degree.-600.degree. F. to separate toluene and heptane insoluble coke precursors prior to recycle. This separation may be enhanced by the use of centrifugation, filtration or a bed of particulate material (e.g. calcined coke). .Iaddend.
    Type: Grant
    Filed: May 17, 1985
    Date of Patent: October 14, 1986
    Assignee: Lummus Crest, Inc.
    Inventors: Harold Unger, Morgan C. Sze, Roger P. Van Dreisen