Patents by Inventor Kerman N. Dukandar

Kerman N. Dukandar 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).

  • Converting isobutane and refinery C4S to propylene
    Patent number: 11932597
    Abstract: A process for converting isobutane to propylene. The process including dehydrogenating isobutane to produce a mixed product stream comprising isobutane and isobutene, skeletal isomerizing the mixed product stream comprising isobutane and isobutene to convert isobutene to n-butenes including 1-butene and 2-butenes and to recover a skeletal isomerization reaction product comprising isobutane, isobutene, butadiene, 1-butene, and 2-butenes. The process further including fractionating the skeletal isomerization reaction product, isomerizing the 1-butene contained therein to 2-butenes, recovering an overhead fraction comprising isobutane, a side draw fraction comprising isobutane and isobutene, and a bottoms fraction comprising 2-butenes, and combining the bottoms fraction with ethylene and converting the ethylene and 2-butenes to produce a reaction effluent comprising propylene.
    Type: Grant
    Filed: March 10, 2023
    Date of Patent: March 19, 2024
    Assignee: LUMMUS TECHNOLOGY LLC
    Inventors: Martinus J. Almering, Kerman N. Dukandar, Oliver Chen
  • CONVERTING ISOBUTANE AND REFINERY C4S TO PROPYLENE
    Publication number: 20230286886
    Abstract: A process for converting isobutane to propylene. The process including dehydrogenating isobutane to produce a mixed product stream comprising isobutane and isobutene, skeletal isomerizing the mixed product stream comprising isobutane and isobutene to convert isobutene to n-butenes including 1-butene and 2-butenes and to recover a skeletal isomerization reaction product comprising isobutane, isobutene, butadiene, 1-butene, and 2-butenes. The process further including fractionating the skeletal isomerization reaction product, isomerizing the 1-butene contained therein to 2-butenes, recovering an overhead fraction comprising isobutane, a side draw fraction comprising isobutane and isobutene, and a bottoms fraction comprising 2-butenes, and combining the bottoms fraction with ethylene and converting the ethylene and 2-butenes to produce a reaction effluent comprising propylene.
    Type: Application
    Filed: March 10, 2023
    Publication date: September 14, 2023
    Applicant: LUMMUS TECHNOLOGY LLC
    Inventors: Martinus J. Almering, Kerman N. Dukandar, Oliver Chen