March 2020

Valves, Pumps and Turbomachinery

Variable capacity control technology facilitates efficient operation for reciprocating compressors

Reciprocating compressors are used extensively in refinery and petrochemical operations to keep feedstocks and products moving through miles of piping.

Sanford, J., Siemens

Reciprocating compressors are used extensively in refinery and petrochemical operations to keep feedstocks and products moving through miles of piping. They also help balance loads and dispense those feedstocks into production processes at precise pressures and timings. Maximizing compressor efficiency and minimizing energy use are key concerns for process engineers. This article details how a variable capacity control technology, such as a hydraulic variable volume clearance pocket (HVVCP), can quickly pay for itself with energy savings—sometimes in just months, depending on the application. It gives operators the ability to align compressor capacity with demand, while minimizing the recyc

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