Abstract: An improved exhaust system and catalytic converter element for a diesel engine wherein the improvement comprises: holding means for restricting the movement of catalytic converter elements in an overhead exhaust manifold; an improved catalytic converter element having at least one retaining rod extending through the catalyst substrate and/or having at least one retaining lip projecting into the substrate; a stabilizer projecting from the cover for the element insertion slot for receiving an end portion of the catalytic converter element to restrict the movement of the converter element in the exhaust manifold; perforated flow distribution elements provided upstream of the catalytic converter elements; and/or vertical coupling manifolds which each receive exhaust from a pair of engine cylinders and then deliver the combined exhaust stream to a separate one of the inlet openings in the bottom of the overhead exhaust manifold.

Abstract: An improved exhaust system and catalytic converter element for a diesel engine wherein the improvement comprises: holding means for restricting the movement of catalytic converter elements in an overhead exhaust manifold; an improved catalytic converter element having at least one retaining rod extending through the catalyst substrate and/or having at least one retaining lip projecting into the substrate; a stabilizer projecting from the cover for the element insertion slot for receiving an end portion of the catalytic converter element to restrict the movement of the converter element in the exhaust manifold; perforated flow distribution elements provided upstream of the catalytic converter elements; and/or vertical coupling manifolds which each receive exhaust from a pair of engine cylinders and then deliver the combined exhaust stream to a separate one of the inlet openings in the bottom of the overhead exhaust manifold.

Abstract: An improved exhaust system for a diesel engine and an improved overhead exhaust manifold segment therefore wherein the improvement comprises a plurality of catalytic converter elements removably positionable in the overhead exhaust manifold over the outlet ends of a series of exhaust port legs extending upwardly to the bottom of the overhead exhaust manifold from the cylinder exhaust ports.

Abstract: An industrial catalytic converter and a removable catalyst element therefor wherein a solid extension is secured on the catalyst element such that, when the catalyst element is positioned in the converter housing, the solid extension will project into the element insertion channel of the housing in a manner effective to at least partially block the flow of exhaust gas around the catalyst element.

Abstract: A dampening device for suppressing vibrations of a tube assembly in a catalytic combustor which includes, a plurality of closely oriented, parallel tubes with each tube having at least one expanded region and at least one narrow region. The expanded regions being structured to contact at least one adjacent tube, thus providing support and minimizing degradation of the joint connecting the tubes to the tube sheet, and degradation of the tubes themselves. Such degradation can result from vibration due to flow of cooling air inside of the tubes, flow of the fuel/air mixture passing over the tubes transverse and longitudinal to the tube bundle, and/or other system/engine vibrations.

Abstract: A catalytic combustor includes a plurality of rectangular, tubular subassemblies having the catalyst coating on their outside surfaces. The subassemblies are held in spaced relationship within channels in support walls so that the catalyst coated surfaces of adjacent subassemblies define a catalyst-coated channel, and the interior of the tubular subassemblies defines uncoated channels. This structure permits precise location and support for the various subassemblies, provides wide flexibility in selecting the number and size of catalyst coated subassemblies, and provides for multiple possible flow paths for cooling air and fuel-air mixture through the catalytic combustor.

Abstract: A catalytic combustor (34) for a gas turbine engine (30). A fuel-air mixture (50) is reacted on a catalytic surface (54) of a catalytic heat exchanger module (36) to partially combust the fuel (48) to form heat energy. The fuel-air mixture is formed using compressed air (44) that has been pre-heated to above a reaction-initiation temperature in a non-catalytic cooling passage (46) of the catalytic heat exchanger module (36). Because the non-catalytic cooling passages (46) provide the necessary pre-heating of the combustion air, no separate pre-heat burner is required. Fuel (48) is added to the pre-heated air (44) downstream of the non-catalytic cooling passage (46) and upstream of the catalytic surface (54), thereby eliminating the possibility of flashback of flame into the cooling passages (46). Both can-type (60) and annular (80) combustors utilizing such a combustion system are described.

Abstract: A catalytic combustor (34) for a gas turbine engine (30). A fuel-air mixture (50) is reacted on a catalytic surface (54) of a catalytic heat exchanger module (36) to partially combust the fuel (48) to form heat energy. The fuel-air mixture is formed using compressed air (44) that has been pre-heated to above a reaction-initiation temperature in a non-catalytic cooling passage (46) of the catalytic heat exchanger module (36). Because the non-catalytic cooling passages (46) provide the necessary pre-heating of the combustion air, no separate pre-heat burner is required. Fuel (48) is added to the pre-heated air (44) downstream of the non-catalytic cooling passage (46) and upstream of the catalytic surface (54), thereby eliminating the possibility of flashback of flame into the cooling passages (46). Both can-type (60) and annular (80) combustors utilizing such a combustion system are described.

Abstract: A catalytic combustor includes a plurality of rectangular, tubular subassemblies having the catalyst coating on their outside surfaces. The subassemblies are held in spaced relationship within channels in support walls so that the catalyst coated surfaces of adjacent subassemblies define a catalyst-coated channel, and the interior of the tubular subassemblies defines uncoated channels. This structure permits precise location and support for the various subassemblies, provides wide flexibility in selecting the number and size of catalyst coated subassemblies, and provides for multiple possible flow paths for cooling air and fuel-air mixture through the catalytic combustor.

Abstract: A dampening device for suppressing vibrations of a tube assembly in a catalytic combustor which includes, a plurality of closely oriented, parallel tubes with each tube having at least one expanded region and at least one narrow region. The expanded regions being structured to contact at least one adjacent tube, thus providing support and minimizing degradation of the joint connecting the tubes to the tube sheet, and degradation of the tubes themselves. Such degradation can result from vibration due to flow of cooling air inside of the tubes, flow of the fuel/air mixture passing over the tubes transverse and longitudinal to the tube bundle, and/or other system/engine vibrations.

Abstract: A combustion turbine which produces a reduced amount of NOx is provided. The combustion turbine reduces the amount of NOx produced by utilizing a secondary combustor. By using a secondary combustor the working gas of the combustion turbine does not need to be heated above 2500° F., the temperature at which a substantial amount of NOx begins to form, until the working gas is entering the turbine assembly. The secondary combustor assembly heats the working gas by injecting a combustible gas, or compressed air if the primary combustor produces a fuel rich working gas, into the elevated temperature working gas. This gas combusts and heats the working gas adjacent to the beginning of the turbine assembly. Because the working gas is not raised above 2500° F. until it is about to enter the turbine assembly, the time during which NOx is formed is reduced.