초록 ▼

A combustor for the combustion of fuel gas is described. The fuel gas entering the combustor by an inlet pipeline is a compressed admixture with air of a concentration below the lower explosive limit. The fuel gas/air admixture passes within a tube to pass to the combustion zone where combustion occ

A combustor for the combustion of fuel gas is described. The fuel gas entering the combustor by an inlet pipeline is a compressed admixture with air of a concentration below the lower explosive limit. The fuel gas/air admixture passes within a tube to pass to the combustion zone where combustion occurs only by reaction/self-combustion. The combusted gas passes by a tortuous path provided by an arrangement of baffles to the outlet duct. The exhausting combusted gas passes over the outer surface of the tube and gives up preheating heat to the inlet gas therein. A gas turbine system for utilizing waste fuel gas also is described that includes a combustor as described that provides combusted fuel to the expansion stage of the turbine.

대표청구항 ▼

[ I claim:] [1.] A combustor for the combustion of a fuel gas comprising a mixture of air and at least one combustible gas, wherein the concentration of air in the fuel gas is such that the fuel gas is below the lower flammability limit for the at least one combustible gas, the combustor comprising

[ I claim:] [1.] A combustor for the combustion of a fuel gas comprising a mixture of air and at least one combustible gas, wherein the concentration of air in the fuel gas is such that the fuel gas is below the lower flammability limit for the at least one combustible gas, the combustor comprising a vessel having an inlet for the supply of fuel gas, a combustion zone, an array of hollow tubes having one end open to the supplied fuel gas and the other end open to the combustion zone, the tubes being spaced-apart so that the outside of the tubes form an exit path for combusted gas from the combustion zone passing to an outlet from the vessel, a portion of the heat of the combusted gas being transferred through walls of the tubes to the fuel gas within the tubes to preheat the fuel gas before entering the combustion zone, wherein the end of the tubes open to the combustion zone are arranged so that the preheated fuel gas entering the combustion zone is mixed with the combusted gas to provide further heating of the preheated fuel gas within the combustion zone, and wherein the combustion zone is free of catalysts and has a volume sufficient to contain the preheated fuel gas for a time sufficient for flameless, non-catalytic combustion of the preheated fuel gas to occur.