Screw Compressor Gas Compression

Rotary screw compressors fill a need in the natural gas compression and process gas compression industries by supplying larger volume, low-pressure applications. Screw compressors are rugged and can handle some liquid entrainment in upset conditions. Discharge oil separation and filtration is critical since oil is injected into the compression chamber for sealing and cooling. Screw compressors are less expensive then a process centrifugal and reciprocating types.
Sep-Pro is an OEM and builds the compressor units: skid base, oil separators, oil systems, and piping and PLC controls.
            Screw compressors are used in open systems such as natural gas compression where the gas needs to be reasonably clean and in closed separation systems suchs as industrial refrigeration. Oil serparation and filtering are critical in open systems because of oil loss and make-up. Sep-Pro uses a three stage coalescing oil separator. A screw compressor can be combined in a staged series configuration with higher-pressure reciprocation or centrifugal compressors. The screw compressor can take a low-pressure gas (i.e. 10-30 psig) and compress to 250-300 psig. This reduces the required size of a higher stage compressor by the inverse ratio of the compression ratio. This significantly reduces equipment cost.
            Sep-Pro builds the systems to hazardous area specs i.e. Class I, Group D, Div 1 or 2 if required. The piping spec can conform to ANSI B31.3 the Chemical plant and Refining Piping Code. All vessels will be ASME U stamped.