Gas turbine engine gaseous fuel injector

Details Gas turbine engine gaseous fuel injector Gas turbine engine gaseous fuel injector

1986-04-29

1987-12-22

Croyle, Carlton R.

Power plants

Combustion products used as motive fluid

Combustion products generator

60748, F02C 100

Patent

active

047139382

ABSTRACT:
A gaseous fuel injector for an industrial gas turbine plant is arranged to operate on fuel produced from a coal gasifier for normal running or natural gas for starting purposes. The injector is self purging to prevent the ingestion of natural gas or combustion products into the passage of the fuel injector for the lower calorific value fuel. The fuel injector has fuel ducts and gas flow passages in a duct assembly attached to the head of each flame tube of a gas generator. For starting, natural gas flows through the duct and the central passage, while air flows through the outer passage preventing ingestion of natural gas and combustion products into the outer fuel duct. When running on fuel from a coal gasifier both ducts run full of fuel, as do the passages. The air for the coal gasifier may be provided by the gas generator.

REFERENCES:
patent: 3691765 (1972-09-01), Carlisle
patent: 3713588 (1973-01-01), Sharpe
patent: 4342198 (1982-08-01), Willis
patent: 4425755 (1984-01-01), Hughes

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