Patent ID: 8109738
Filing Date: 2012-02-07
Classification: F04B

Abstract:
1. A gas pressure booster, comprising: a drive cylinder and a boost cylinder interconnected by reciprocating drive and boost pistons, the drive piston supplying force powered by a first gas stream at a higher pressure within the drive cylinder which exhausts to a second gas stream at a lower pressure; wherein fugitive gas emissions originating from one or more of sources including oil and gas wells, natural gas pipeline compressor stations or turbine compressor applications in oil refineries or chemical plants are captured in the boost cylinder and transported to the lower pressure second gas stream to eliminate gas discharged to atmosphere, and having two communicating three-way-valves, wherein one side of the valves connects the boost cylinder to an intake vapor line containing the fugitive gas emissions, and the other side of the valves connects the boost cylinder to a low pressure discharge gas line, the three-way-valves allowing gas pressures in the boost cylinder and the drive cylinder to equalize.