Thomas R Mcgowan

US Patent:

20030221409, Dec 4, 2003

Filed:

May 29, 2002

Appl. No.:

10/157214

Inventors:

Thomas McGowan - Atlanta GA, US

International Classification:

F02C007/22

US Classification:

060/039170, 060/734000

Abstract:

A combustion chamber in a combustion turbine is operated in a fuel rich mode, so that combustion is incomplete in the combustion chamber. Additional air can be added either in the expansion turbine or in additional combustion chambers, with additional combustion taking place either in the expansion turbine or in the additional combustion chambers. The process is better able to maintain a steady temperature throughout the expansion turbines, achieving higher efficiencies and more nearly approximately the more efficient infinite reheat cycle than the simple Brayton cycle. The atmosphere at the exit to the combustion chamber is reducing, rather than the normal oxidizing atmosphere, so oxidation of nitrogen to produce NOis lessened, and the ability to use other alloys is enhanced. Emissions of CO, a greenhouse gas, are reduced per unit of power produced.

US Patent:

46017305, Jul 22, 1986

Filed:

Jul 13, 1984

Appl. No.:

6/630641

Inventors:

Thomas F. McGowan - Atlanta GA
R. Lynnard Tessner - Elberton GA
Robert A. Cassanova - Tucker GA
William S. Bulpitt - Atlanta GA

Assignee:

Georgia Tech Research Corporation - Atlanta GA

International Classification:

C10J 334
C10J 342

US Classification:

48 76

Abstract:

A fixed bed gasifier for wood or other solid fuel has an air supply grate or grid spanning its interior horizontally substantially above the floor of the gasifier reactor vessel. The air supply tubes forming the grid are widely spaced apart to offer minimal resistance to the downward movement of ash in the reactor vessel. The ends of the grid tubes are supported by stuffing boxes on the side wall of the reactor vessel. An ash removal auger communicates with an ash pit at the bottom of the gasifier reactor vessel and a separately powered rotating ash plow operates in the ash pit above the ash removal auger and below the level of the air supply grate or grid.