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Sundyne is releasing enhanced “fit-for-purpose” centrifugal compressors. Cogeneration power plants require gas pressures in the range of 250-750 psig in their turbines for optimal operation. Interstate gas pipelines transport gas at different pressures – ranging anywhere from 30 to 125 psig. In order to boost incoming gas pressures to levels required by turbines, many plants are deploying Sundyne fuel gas boosters.
Sundyne’s high speed digital control system integrates all the compressor control functionality in one system, including surge protection, load-sharing capabilities, compressor-switching and discharge pressure control. This system can be configured to control compressors in multiple configurations including variable inlet guide vanes, suction throttling, variable speed and/or gas recirculation.
Unlike alternative sealing arrangements such as labyrinth, carbon rings or single seal configurations, Sundyne’s Tandem Dry Gas Seals offers a fully controlled gas emission system and helps to avoids fuel gas contamination. The oil-less design eliminates concerns related to oil contamination. For fuel gas boosting applications, oil content should be less than 1 ppm to guarantee optimal gas combustion in the turbine. Compared to alternative technologies, such as oil-flooded screw compressors, Sundyne’s technology eliminates oil contamination without relying on filtration or separation systems.
Sundyne fully integrated compressor trains include auxiliary systems such as air/water cooled gas heat exchangers; nitrogen generators; valve skids, and all the associated monitors & controllers. As a result, third-party packages are not required, which shortens delivery times. While many Sundyne gas compressors are built “fit-for-purpose,” the company also manufactures units to meet stringent API 617 standards.