초록 ▼

There has thus been provided a highly efficient metal-ceramic catalytic combustor for a gas turbine/catalytic combustor assembly. The catalyst zone is formed of a high temperature resistant metal wire mesh, e.g., palladium coated tungsten or ferritic stainless steel screen, e.g., 40 mesh, which is a

There has thus been provided a highly efficient metal-ceramic catalytic combustor for a gas turbine/catalytic combustor assembly. The catalyst zone is formed of a high temperature resistant metal wire mesh, e.g., palladium coated tungsten or ferritic stainless steel screen, e.g., 40 mesh, which is aluminized with metallic aluminum, and heated to convert the outermost layer of aluminum to aluminum oxide and encourage the diffusion of the inner layer of aluminum into the body of the metal wire, desirably forming a thin metal/aluminum alloy layer. The outer surface because of the Kerkendall Effect is porous and readily accepts and strongly bonds to a metal oxide coat, e.g., a magnesia/alumina, or magnesia/alumina/yttria, or barium oxide/alumina, or barium oxide/alumina/yttria wash coat. There may also be included a catalyst deposited on the ceramic outer coat, e.g., a noble metal catalyst, for enhancement of the combustion of an air/fuel mixture. Because the metals from which the wire mesh is formed all have melting points above the maximum temperature of operation, i.e., 2700°F., the screen itself has significant tensile strength at temperature.

대표청구항 ▼

A catalytic combustor device for gas turbine power plants comprising a housing, a primary fuel mixing zone, and a catalytic combustor in axially spaced relation to said fuel mixing zone within said housing, said catalytic combustor being characterized by a coated catalyst support member disposed in

A catalytic combustor device for gas turbine power plants comprising a housing, a primary fuel mixing zone, and a catalytic combustor in axially spaced relation to said fuel mixing zone within said housing, said catalytic combustor being characterized by a coated catalyst support member disposed in air/fuel intercepting relation in said fuel mixing zone within said housing, said catalyst combustor comprising nonnesting layers of said coated catalyst support member which is nonlinearly corrugated and which is made of a first layer composed of a high temperature resistant refractory metal or a ferritic stainless steel, a second layer composed of a noble metal adhered to said first layer, a third layer composed of a refractory metal oxide on said second layer, and fourth layer composed of a catalytically active noble metal catalyst supported on said third layer, said coated catalyst support member being in the form of a metal-ceramic honeycomb which is opaque to infrared.