Patent ID: 9695373
Date: 2017-07-04
CPC Classifications: B01D,C10L

Claim:
1. A method for dehydrating natural gas, comprising: a) circulating a desiccant between a contactor, a flash tank and a still with a reboiler; b) introducing wet gas into the contactor with dry or lean desiccant, the dry or lean desiccant absorbing water vapor from the wet gas resulting in a rich or wet desiccant and dry gas; c) extracting flash gas from the rich or wet desiccant in the flash tank; d) removing the water vapor from the rich or wet desiccant in the still by heating the rich or wet desiccant to vaporize the water vapor resulting in the dry or lean desiccant; e) recirculating the dry or lean desiccant from the still to the contactor; f) firing the reboiler with the flash gas from the flash tank; g) burning flash gas in a burner associated with a vent stack of the reboiler when not firing the reboiler with the flash gas; and h) circulating dry or lean desiccant from the still to the flash tank.