Patent ID: 6422396
Filing Date: 2002-07-23
Classification: B01D,Y10S

Abstract:
A coalescer for removing water from hydrocarbon fluids, comprising:porous hydrophobic media for passage of hydrocarbon fluids therethrough; said media comprising at least three hydrophobic layers, said layers having a negative density gradient with small pores upstream and larger pores downstream, the three layers include a first layer having a Frazier air permeability of from 8 to 15 cfm/ft2 at 0.5â€³ H2O &Dgr;P and an average basis weight of 246Â±10 lb/3000 ft2, a second layer having a Frazier air permeability of from 120 to 170 cfm/ft2 at 0.5â€³ H2O &Dgr;P and an average basis weight of 168Â±8 lb/3000 ft2, and a third layer having a Frazier air permeability of from 800 to 1000 cfm/ft2 at 0.5â€³ H2O &Dgr;P and an average basis weight of 99Â±6 lb/3000 ft2.