Abstract
Gas turbines were selected for base-load operation because the waste heat could be utilized in this natural gas liquid extraction plant. It is the object of this paper to present the operation experience of a gas turbine driving a propane compressor used for base-load operation in a combined cycle. The turbines drive centrifugal refrigeration compressors for the extraction of propane, heavier liquid components, and helium from natural gas. As this is one of the largest plants of its type, the operating experience and performance are outlined. The selection, method of operation, reliability, and maintenance costs of this combined-cycle plant are discussed. It is not practical to generalize on selection of combining prime movers and major machinery for an extraction plant or a mechanical drive combined cycle. Each case must be individually evaluated and is dependent upon its location, application, and economic factors. The conclusion describes the reliability and availability of the combined cycle as borne out by approximately four years of operation.
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