Patents by Inventor Behzad Nazar

Behzad Nazar 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).

  • Rectified reflux deethanizer
    Patent number: 5884504
    Abstract: The present invention is an improvement in the combined fractionation steps of deethanization and C2 splitting for ethylene and ethane separation. Theoretical stages are added to the rectification section of a deethanizer above a liquid or vapor sidedraw. Polymer grade ethylene product up comprising to 30 percent of the ethylene in the deethanizer feed is obtained in an overhead stream according to the present invention. Lesser recovery at the same ethylene purity or higher recovery at lower ethylene purity are obtained varying recovery or numbers of additional stages in the rectification. An overall reduction in total cold utilities for the overhead condensers for the deethanizer and downstream C2 splitter are obtained in practicing the present invention.
    Type: Grant
    Filed: August 28, 1997
    Date of Patent: March 23, 1999
    Assignee: Brown & Root, Inc.
    Inventor: Behzad Nazar
  • Rectified reflux deethanizer
    Patent number: 5678424
    Abstract: The present invention is an improvement in the combined fractionation steps of deethanization and C2 splitting for ethylene and ethane separation. Theoretical stages are added to the rectification section of a deethanizer above a liquid or vapor sidedraw. Polymer grade ethylene product up comprising to 30 percent of the ethylene in the deethanizer feed is obtained in an overhead stream according to the present invention. Lesser recovery at the same ethylene purity or higher recovery at lower ethylene purity are obtained varying recovery or numbers of additional stages in the rectification. An overall reduction in total cold utilities for the overhead condensers for the deethanizer and downstream C2 splitter are obtained in practicing the present invention.
    Type: Grant
    Filed: January 22, 1996
    Date of Patent: October 21, 1997
    Assignee: Brown & Root, Inc.
    Inventor: Behzad Nazar