Patents by Inventor Graeme Humphries

Graeme Humphries 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).

  • POWER RECOVERY
    Publication number: 20150167501
    Abstract: The invention relates to a method and apparatus for recovering power from the gaseous stream produced by an oxidation reaction. Specifically, the invention is based on heating the gaseous stream from the oxidation reaction to a temperature of at least 800° C. and recovering energy through a gas turbine. The compressor stage of the gas turbine compresses the oxidant feed to the reactor thereby at least partially offsetting the cost of providing the high temperature and pressure reaction conditions in the reactor. The invention also provides improved control of the power recovery system by optimising the efficiency of the gas turbine by feeding gas to the gaseous stream to modulate the flow of gas to the turbine relative to the compressor discharge flow in order to compensate for the consumption of oxidant in the reactor.
    Type: Application
    Filed: February 19, 2015
    Publication date: June 18, 2015
    Applicant: INVISTA NORTH AMERICA S.A R.L.
    Inventors: Harald B. CARRICK, Graham R. AIRD, Graeme HUMPHRIES
  • POWER RECOVERY FOR USE IN START-UP OR RE-START OF A PURE TEREPHTHALIC ACID PRODUCTION PROCESS
    Publication number: 20130255259
    Abstract: The invention relates to a method and system for recovering power from the gaseous stream produced by a paraxylene-air oxidation reaction. Specifically, the invention is based on heating the gaseous stream from the oxidation reaction to a temperature of at least 600° C., recovering energy through an expander, heating the expander vent stream and recovering heat from the vent stream. The recovered heat is used to maintain the oxidation process, purification process, start-up the process, or re-start the process after an interruption.
    Type: Application
    Filed: May 24, 2013
    Publication date: October 3, 2013
    Inventors: Harald B. CARRICK, Graham AIRD, Graeme HUMPHRIES
  • POWER RECOVERY
    Publication number: 20110100007
    Abstract: The invention relates to a method and apparatus for recovering power from the gaseous stream produced by an oxidation reaction. Specifically, the invention is based on heating the gaseous stream from the oxidation reaction to a temperature of at least 800° C. and recovering energy through a gas turbine. The compressor stage of the gas turbine compresses the oxidant feed to the reactor thereby at least partially offsetting the cost of providing the high temperature and pressure reaction conditions in the reactor. The invention also provides improved control of the power recovery system by optimising the efficiency of the gas turbine by feeding gas to the gaseous stream to modulate the flow of gas to the turbine relative to the compressor discharge flow in order to compensate for the consumption of oxidant in the reactor.
    Type: Application
    Filed: May 6, 2009
    Publication date: May 5, 2011
    Applicant: INVISTA North Americs S,a.r.l.
    Inventors: Harald B. Carrick, Graham Robert Aird, Graeme Humphries