Refrigeration

Refrigeration plants are widely used to separate natural gas liquids (mostly propane and heavier components) from the natural gas stream that comes from individual gas and oil wells, and other sources. In the straight refrigeration process, the natural gas stream is chilled to around -30°F with an external propane refrigeration system. The condensed liquids (NGLs) are separated in a low temperature separator and stabilized in a deethanizer column and the overhead gas from the deethanizer column is compressed, cooled and recycled to the inlet gas stream again for further processing. The NGLs (Propane + components) collected in the deethanizer column are pumped out to storage systems.