Patent ID: 6581297
Filing Date: 2003-06-24
Classification: B01D,B60T

Abstract:
A twin tower gas drying system for purifying a gas stream, comprising:(a) a separation means for removing particulate material from a stream of unpurified gas; (b) a pre-filtering means for removing impurities from said stream of unpurified gas flowing from said separation means; (c) first and second coalescing filters capable of removing contaminants from said stream of unpurified gas flowing from said pre-filtering means; (d) a first tower having a first dessicant material therein for removing moisture from said stream of unpurified gas received from said first coalescing filter so as to supply a first stream of purified gas therefrom; (e) a second tower having a second dessicant material therein for removing moisture from said remaining stream of unpurified gas received from a second of said coalescing filters so as to supply a second stream of purified gas therefrom; and (f) a control means for controlling flow of said unpurified and purified streams of gases through said drying system such that said drying system is capable of alternately switching between supplying unpurified gas to said first tower and supplying unpurified gas to said second tower.