Patents by Inventor Kevin A. Kunz

Kevin A. Kunz 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).

  • Pressure swing adsorption process for separating para-xylene and ethylbenzene from mixed C8 aromatics
    Patent number: 6627783
    Abstract: A pressure swing adsorption process to separate para-xylene and ethylbenzene from C8 aromatics uses a para-selective adsorbent, preferably a non-acidic, medium pore molecular sieve of the MFI structure type, and is operated isothermally in the vapor phase at elevated temperatures and pressures. A fixed bed of adsorbent is saturated with para-xylene and ethylbenzene, which are preferentially adsorbed, then the feed to the process is stopped. Lowering the partial pressure desorbs the para-xylene and ethylbenzene. The process effluent is rich in para-xylene and ethylbenzene. A stream of non-adsorbed meta-xylene and ortho-xylene may be obtained prior to desorption of para-xylene and ethylbenzene.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: September 30, 2003
    Assignee: BP Corporation North America Inc.
    Inventors: Ruth Ann Doyle, Jeffrey T. Miller, Kevin A. Kunz
  • Pressure swing adsorption process for separating para-xylene and ethylbenzene from mixed C8 aromatics
    Publication number: 20020099251
    Abstract: A pressure swing adsorption process to separate para-xylene and ethylbenzene from C8 aromatics uses a para-selective adsorbent, preferably a, non-acidic, medium pore molecular sieve of the MFI structure type, and is operated isothermally in the vapor phase at elevated temperatures and pressures. A fixed bed of adsorbent is saturated with para-xylene and ethylbenzene, which are preferentially adsorbed, then the feed to the process is stopped. Lowering the partial pressure desorbs the para-xylene and ethylbenzene. The process effluent is rich in para-xylene and ethylbenzene. A stream of non-adsorbed meta-xylene and ortho-xylene may be obtained prior to desorption of para-xylene and ethylbenzene.
    Type: Application
    Filed: July 10, 2001
    Publication date: July 25, 2002
    Inventors: Ruth Ann Doyle, Jeffrey T. Miller, Kevin A. Kunz