Patents by Inventor Biswanath SAHA

Biswanath SAHA 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).

  • Methods for catalytic cracking
    Patent number: 10550336
    Abstract: The present disclosure provides methods and apparatus for catalytic cracking of hydrocarbon feed. The apparatus includes a plurality of stages, wherein hydrocarbon feed is introduced into a bottom stage reactor and flows in an overall upward direction. A reaction catalyst stream is introduced into a top stage reactor and flows in an overall downward direction. In each of the stages, the hydrocarbon feed is allowed to come in contact with the reaction catalyst stream received at the particular stage for cracking of the hydrocarbon feed. The final cracked product stream is obtained at an outlet of the top stage reactor and a final spent catalyst stream is obtained at an outlet of the bottom stage reactor.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: February 4, 2020
    Assignee: BHARAT PETROLEUM CORPORATION LIMITED
    Inventors: Ravi Kumar Voolapalli, Seetaram Chebrolu, Biswanath Saha
  • METHODS AND APPARATUS FOR CATALYTIC CRACKING
    Publication number: 20160160134
    Abstract: The present disclosure provides methods and apparatus for catalytic cracking of hydrocarbon feed. The apparatus includes a plurality of stages, wherein hydrocarbon feed is introduced into a bottom stage reactor and flows in an overall upward direction. A reaction catalyst stream is introduced into a top stage reactor and flows in an overall downward direction. In each of the stages, the hydrocarbon feed is allowed to come in contact with the reaction catalyst stream received at the particular stage for cracking of the hydrocarbon feed. The final cracked product stream is obtained at an outlet of the top stage reactor and a final spent catalyst stream is obtained at an outlet of the bottom stage reactor.
    Type: Application
    Filed: December 3, 2015
    Publication date: June 9, 2016
    Inventors: Ravi Kumar VOOLAPALLI, Seetaram CHEBROLU, Biswanath SAHA