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Gas Turbine Emissions
Abstract
Historically, preliminary design information regarding gas turbine emissions has been unreliable, particularly for facilities using steam injection and other forms of Best Available Control Technology (BACT). This was probably attributed to the lack of regulatory interest in the 'real world' test results coupled with the difficulties of gathering analogous bench test data for systems employing gas turbines with Heat Recovery Steam Generators (HRSG) and steam injection. It appears that the agencies are getting a better grasp of emissions, but there are still problem areas, particularly CO and unburned hydrocarbon emissions. The lag in data has resulted in the imposition of a CO reactor as BACT for the gas turbine. With the renewed concern about the environment, air permits will have a high profile with offsets being the next fix beyond BACT. 'The manner in which technology developers and electric utilities will share emissions reductions in the coming era of pollution allowance trading
is becoming prominent on the agendas of strategic planners at technology vendors and
the electric power industry....' (1) Therefore, it becomes increasingly important
that the proponents of gas turbine-based
facilities establish more reliable data on
their proposed emissions.
This paper addresses the gas turbine emissions experiences of eight cogeneration plants utilizing: 1) steam injection for both NOx
control and power augmentation, 2) CO
reactors, 3) selective catalytic reduction units. It also looks at possible regulatory
actions.
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Citation
Frederick, J. D. (1990). Gas Turbine Emissions. Energy Systems Laboratory (http://esl.eslwin.tamu.edu). Available electronically from https : / /hdl .handle .net /1969 .1 /92275.