Patents Assigned to Brown & Root USA, Inc.
  • Method and apparatus for gas phase polymerization of olefins in vertically stacked reactors
    Patent number: 5143705
    Abstract: A method and apparatus are disclosed for producing polyolefins by a fluidized gas phase polymerization process utilizing two stacked, substantially vertically aligned, reactors and a substantially vertical product transfer line for transfer of intermediate polyolefin polymer product from the polymerization zone of the upper reactor to the polymerization zone of the lower reactor. This abstract shall not be construed to define or limit in any way the scope of the invention, which is measured solely by the appended claims.
    Type: Grant
    Filed: February 22, 1991
    Date of Patent: September 1, 1992
    Assignee: Brown & Root USA, Inc.
    Inventor: Gerald M. Platz
  • Apparatus for gas phase polymerization of olefins in vertically stacked reactors
    Patent number: 5034195
    Abstract: A method and apparatus are disclosed for producing polyolefins by a fluidized gas phase polymerization process utilizing two stacked, substantially vertically aligned, reactors and a substantially vertical product transfer line for transfer of intermediate polyolefin polymer product from the polymerization zone of the upper reactor to the polymerization zone of the lower reactor. This abstract shall not be construed to define or limit in any way the scope of the invention, which is measured solely by the appended claims.
    Type: Grant
    Filed: November 18, 1988
    Date of Patent: July 23, 1991
    Assignee: Brown & Root USA, Inc.
    Inventor: Gerald M. Platz