Patents by Inventor Mark R. Gulley

Mark R. Gulley 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 reducing oxygen consumption in black liquor oxidation
    Patent number: 4313788
    Abstract: High heat recovery and minimized oxygen requirement for oxidation of sulfur compounds in black liquor is obtained by integrating the oxidation into the multiple effect evaporation system of the pulp mill recovery sequence. The oxidation step is carried out at an intermediate stage in the multiple effect concentration of weak black liquor in counterflow to the external heat input, and the thus oxidized liquor is then further concentrated by flow through the remaining effects of the system co-currently with the direction of heat flow.
    Type: Grant
    Filed: May 12, 1980
    Date of Patent: February 2, 1982
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Mark R. Gulley