Patents by Inventor Arju H. Bhojwani

Arju H. Bhojwani 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).

  • Solids quench boiler and process
    Patent number: 4550769
    Abstract: A process for quenching and cooling reactor effluent is provided. The apparatus utilized to practice the process includes a section for introducing relatively cool particulate solids into a hot effluent stream to effect initial quenching and a section to further cool the composite quenched effluent and solids. The process employs relatively cool particulate solids to quench hot effluent and indirect heat exchange between water and the quenched effluent-solids mix to generate high pressure steam and further cool the mix.
    Type: Grant
    Filed: May 7, 1982
    Date of Patent: November 5, 1985
    Assignee: Stone & Webster Engineering Corp.
    Inventors: Arju H. Bhojwani, Herman N. Woebcke
  • Solids quench boiler and process
    Patent number: 4437979
    Abstract: A process for quenching and cooling the reactor effluent in a thermal regenerative cracking (TRC) system is disclosed. The process for quenching the reactor effluent includes the steps of introducing particulate solids into the reactor effluent stream, passing the composite stream of reactor effluent and particulate solids in indirect heat exchange relationship with a coolant, separating the solids and quenched effluent and returning the separated solids to quench effluent.
    Type: Grant
    Filed: February 2, 1982
    Date of Patent: March 20, 1984
    Assignee: Stone & Webster Engineering Corp.
    Inventors: Herman N. Woebcke, Arju H. Bhojwani, Robert J. Gartside
  • Solids quench boiler
    Patent number: 4426359
    Abstract: Apparatus for quenching and cooling the reactor effluent in a thermal regenerative cracking (TRC) system. The quench apparatus includes a section for introducing relatively cool particulate solids into a hot effluent stream to effect initial quenching and a section to further cool the composite of quenched effluent and solids.
    Type: Grant
    Filed: February 2, 1982
    Date of Patent: January 17, 1984
    Assignee: Stone & Webster Engineering Corp.
    Inventors: Herman N. Woebcke, Arju H. Bhojwani, Robert J. Gartside
  • Thermal regenerative cracking (TRC) apparatus
    Patent number: 4370303
    Abstract: An improved Thermal Regenerative Cracking (TRC) apparatus and process includes: (10) an improved low residence time solid-gas separation device and system; and (2) an improved solids feeding device and system; as well as an improved sequential thermal cracking process; an improved solids quench boiler and process; an improved preheat vaporization system; and an improved fuel gas generation system for solids heated. One or more of the improvements may be incorporated in a conventional TRC system.
    Type: Grant
    Filed: June 11, 1981
    Date of Patent: January 25, 1983
    Assignee: Stone & Webster Engineering Corp.
    Inventors: Herman N. Woebcke, Arju H. Bhojwani, Robert J. Gartside, Axel R. Johnson
  • Solids quench boiler
    Patent number: 4356151
    Abstract: Apparatus for quenching and cooling the reactor effluent in a thermal regenerative cracking (TRC) system. The quench apparatus includes a section for introducing relatively cool particulate solids into a hot effluent stream to effect initial quenching and a section to further cool the composite of quenched effluent and solids.
    Type: Grant
    Filed: July 3, 1980
    Date of Patent: October 26, 1982
    Assignee: Stone & Webster Engineering Corp.
    Inventors: Herman N. Woebcke, Arju H. Bhojwani, Robert J. Gartside
  • Solids quench boiler and process
    Patent number: 4351275
    Abstract: Apparatus and process for quenching and cooling reactor effluent. The apparatus includes a section for introducing relatively cool particulate solids into a hot effluent stream to effect initial quenching and a section to further cool the composite quenched effluent and solids. The process employs relatively cool particulate solids to quench hot effluent and indirect heat exchange between water and the quenched effluent-solids mix to generate high pressure steam and further cool the mix.
    Type: Grant
    Filed: October 5, 1979
    Date of Patent: September 28, 1982
    Assignee: Stone & Webster Engineering Corp.
    Inventors: Arju H. Bhojwani, Robert J. Gartside, Herman N. Woebcke
  • Thermal regenerative cracking (TRC) process
    Patent number: 4318800
    Abstract: An improved Thermal Regenerative Cracking (TRC) apparatus and process includes: (1) an improved low residence time solid-gas separation device and system; and (2) an improved solids feeding device and system; as well as an improved sequential thermal cracking process; an improved solids quench boiler and process; an improved preheat vaporization system; and an improved fuel gas generation system for solids heated. One or more of the improvements may be incorporated in a conventional TRC system.
    Type: Grant
    Filed: July 3, 1980
    Date of Patent: March 9, 1982
    Assignee: Stone & Webster Engineering Corp.
    Inventors: Herman N. Woebcke, Arju H. Bhojwani, Robert J. Gartside, Axel R. Johnson