Power plants – Combustion products used as motive fluid – Process
Reexamination Certificate
2006-06-13
2006-06-13
Kim, Ted (Department: 3746)
Power plants
Combustion products used as motive fluid
Process
C060S039182
Reexamination Certificate
active
07059134
ABSTRACT:
A cogeneration system having a gas turbine generator (10) that provides combustion air via an exhaust to a heat recovery steam generator (13) has a gas-seal stack (19) coupled there between. The gas-seal stack (19) prevents substantial portions of the exhaust gas from exiting there through due to formation of a column of higher density ambient air. This blockage is achieved without resort to mechanical. pneumatic pathway control devices. Conversely, if and when the gas turbine generator (10) shuts down, ambient air is drawn through the gas-seal stack (19) and serves to support continued combustion in the heat recovery steam generator (13). In one embodiment, an induction fan (or fans) (16) is located at the exhaust of the heat recovery steam generator (13) such that combustion air is pulled through the heat recovery steam generator (13) rather than pushed there through. This aids in minimizing backpressure at the exhaust of the gas turbine generator (10).
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ExxonMobil Upstream Research Company
Kim Ted
LandOfFree
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