200 HP Acid Gas Pump Package

Application:

Acid Gas Injection of Liquid H2S/CO2

Location:

Wapiti Area (Alberta, Canada)

Objective:

Injection pressure of 95% H2S & 5% CO2 precluded the use of a 6-stage compressor due to condensing temperature on interstage. A 5-stage compressor was used, with the process being condensed and sub-cooled prior to the last pumping stage.

Design Challenges:

A “seal-less” double diaphragm tri-plex pump was selected for this application. Maintaining correct NPSH requirements for the pump in this critical service, while minimizing costs through sub-cooling. Correctly designing the accumulator to work with the 5-stages of compression, and the last pumping stage.