Patent ID: 6711914
Filing Date: 2004-03-30
Classification: B01D,C10L,Y10S

Abstract:
A process for pretreating a natural gas under pressure containing hydrocarbons, at least one of the acid compounds hydrogen sulfide and carbon dioxide, and water, comprising the following stages:a) cooling the natural gas so as to produce a liquid phase and a gas phase, b) separating the liquid phase obtained in stage a) from the gas phase obtained in stage a), c) contacting, in a first contact zone, the gas phase obtained in stage b) with a liquid phase obtained in stage d) to produce a gas phase and a liquid phase, d) contacting, in a second contact zone, the gas phase obtained in stage c) with a liquid phase obtained in stage e) to produce a gas phase and a liquid phase, e) cooling the gas phase obtained in stage d) to produce a liquid phase and a gas phase.