High temperature combuster

Combustion – Fuel disperser installed in furnace – Disperser feeds into permeable mass – e.g. – checkerwork – etc.

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Details

431328, 431329, 502525, 502527, 422180, 60723, F23D 2100

Patent

active

050262734

ABSTRACT:
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.degree. F., the screen itself has significant tensile strength at temperature.

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4,711,009 Dated 12/8/87-Cornelison et al. C1 29-157R.

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