Gas Turbine Efficiency Sweden Ab

Kawasaki Jukogyo Kabushiki Kaisha

Catalytica Energy Systems, Inc.

John Barnes

Robert James Bland

John L Battaglioli

Adam Bailey

Robert Anthony Corr, Ii

Tim Caron

John Battaglioli

A combustor for a gas turbine is provided having a nozzle assembly located at one end and a combustion chamber defining a second end of the combustor. A venturi is positioned within the combustor, between the nozzle and the combustion chamber. The venturi defines a passageway therein having a first side facing the nozzle and a second side facing the combustion chamber. Compressed air is directed into an inlet in fluid communication with the first and second sides of the venturi passageway. The venturi passageway directs the compressed air from the inlet in opposite directions within the first and second sides of the passageway for cooling the venturi.

Venturi cooling system

A combustor for a gas turbine is provided having a nozzle assembly located at one end and a combustion chamber defining a second end of the combustor. A venturi is positioned within the combustor, between the nozzle and the combustion chamber. The venturi defines an internal passageway therein having a first side facing the nozzle and a second side facing the combustion chamber. Compressed air is directed into an inlet in fluid communication with the first and second sides of the internal passageway. The internal passageway directs the compressed air from the inlet in opposite directions within the first and second sides of the internal passageway for cooling the venturi.

The present invention provides a support structure for a catalyst disposed within an outer containment. Several unique arrangements and connections of supporting struts that form the structure provide a number of significant advantages and improvements. The support structure provides a very low disturbance of gas flow while maintaining a high amount of contact support with catalyst foils. In addition to a high tolerance of thermal gradients and fewer stress concentrations, strong support in radial and axial directions is also provided.

Thermally tolerant support structure for a catalytic combustion catalyst

Disclosed is a unique fuel and air premixing system for a gas turbine catalytic combustion system. The mixer utilizes a multi-channel counter-rotating swirler with aerodynamically shaped fuel pegs located upstream of the swirler. The premixing system provides the downstream catalyst with a fuel-air mixture sufficiently uniform for proper catalyst operation and wide operating limits. Features have been incorporated in the system to make it resistant to flameholding.

Growing community of inventors

Niskayuna, NY, United States of America

John Barnes