Patent ID: 6955705
Filing Date: 2005-10-18
Classification: B01D,C10L,Y10S

Abstract:
1. A method of compressing and dehydrating a wet natural gas produced from a low-pressure well, comprising the steps of: a) feeding said wet natural gas to a rotary screw compressor; b) feeding a dehydrating agent to said rotary screw compressor and permitting said dehydrating agent to associate with said wet natural gas within said rotary screw compressor; c) causing said rotary screw compressor to compress and dehydrate said wet natural gas to produce a dehydrating agent/water mixture in a liquid phase and a compressed dry natural gas in a gaseous phase; d) feeding said dehydrating agent/water mixture and said compressed dry natural gas from said rotary screw compressor to a separator; e) causing said separator to separate said dehydrating agent/water mixture from said compressed dry natural gas; f) feeding said compressed dry natural gas from said separator to a cooler; g) causing said cooler to cool said compressed dry natural gas; h) feeding said cooled compressed dry natural gas from said cooler to a gathering system or sales line; i) feeding said dehydrating agent/water mixture from said separator to a reboiler; j) causing said reboiler to heat said dehydrating agent/water mixture to a temperature that causes vaporization of said water from said dehydrating agent/water mixture and recovery of said dehydrating agent; k) feeding said recovered dehydrating agent from said reboiler to a dehydrating agent pump; l) causing said dehydrating agent pump to feed said recovered dehydrating agent from said pump to said cooler; m) causing said cooler to cool said recovered dehydrating agent; n) feeding said cooled recovered dehydrating agent from said cooler to a dehydrating agent filter; o) permitting said dehydrating agent filter to filter said cooled recovered dehydrating agent; p) feeding said filtered cooled recovered dehydrating agent from said dehydrating agent filter to said rotary screw compressor for reuse in step (a).