Patents by Inventor Michael T. Melchior

Michael T. Melchior 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).

  • Process for removing acid gases using a basic salt activated with a non-sterically hindered diamine
    Patent number: 4376101
    Abstract: Acidic gases containing carbon dioxide are removed from a normally gaseous mixture by absorbing CO.sub.2 from the gaseous mixture with an aqueous solution comprising a basic alkali metal salt or hydroxide and an activator or promoter system for the salt or hydroxide which contains (i) at least one non-sterically hindered diamine defined as having both a primary and a tertiary amino moiety wherein the primary amino moiety is attached to a primary carbon atom, and (ii) an amino acid, and desorbing at least partially the absorbed CO.sub.2 from the aqueous solution.
    Type: Grant
    Filed: November 13, 1981
    Date of Patent: March 8, 1983
    Assignee: Exxon Research and Engineering Co.
    Inventors: Guido Sartori, Chang J. Kim, Michael T. Melchior, David W. Savage
  • 1-Secondary or 1-tertiary alkyl or cycloalkyl-hexahydro-2-pyrimidinones and 1-secondary or 1-tertiary alkyl or 1-cycloalkyl-2-imidazolidinones and their use as antifoaming agents
    Patent number: 4343716
    Abstract: Antifoaming agents for use in acid gas scrubbing processes comprising 1-secondary or 1-tertiary alkyl- or 1-cycloalkyl-hexahydro-2-pyrimidinones and 1-secondary or 1-tertiary alkyl- or 1-cycloalkyl-2-imidazolidinones are disclosed.
    Type: Grant
    Filed: June 25, 1979
    Date of Patent: August 10, 1982
    Assignee: Exxon Research & Engineering Co.
    Inventors: Michael T. Melchior, George E. Milliman, Guido Sartori
  • Process for converting cyclic urea to corresponding diamine in a gas treating system
    Patent number: 4282193
    Abstract: Acidic gases such as carbon dioxide are removed from a gaseous mixture including the acidic component by contacting the gaseous mixture in a scrubbing system with an acid absorbing solution comprising a basic alkali metal compound and an activator, during which process at least a portion of the activator is converted to cyclic urea. At least a portion of the scrubbing solution is transferred to a thermal conversion zone wherein at least a portion of the cyclic urea is converted back to the activator afterwhich the scrubbing solution is returned to the scrubbing system from the thermal conversion zone.
    Type: Grant
    Filed: February 19, 1980
    Date of Patent: August 4, 1981
    Assignee: Exxon Research & Engineering Co.
    Inventors: Michael T. Melchior, George E. Milliman, Chang J. Kim, George R. Chludzinski
  • Method of removing carbon dioxide from gases utilizing an alkaline absorption solution containing a cyclic urea anti-foaming agent
    Patent number: 4183903
    Abstract: Antifoaming agents for use in acid gas scrubbing processes comprising 1-secondary or 1-tertiaryalkyl- or 1-cycloalkyl-hexahydro-2-pyrimidinones and 1-secondary or 1-tertiary alkyl- or 1-cycloaklyl-2-imidazolidinones are disclosed.
    Type: Grant
    Filed: August 2, 1978
    Date of Patent: January 15, 1980
    Assignee: Exxon Research & Engineering Co.
    Inventors: Michael T. Melchior, George E. Milliman, Guido Sartori