Axens

Ifp Energies Nouvelles

Guillaume Parer

Pierre-Yves Lanfrey

Bruno Delfort

Xavier Courtial

Bernard Chambon

Aurélie Wender

Elsa Muller

The present invention relates to a process for regenerating a rich MEG aqueous solution (), recovering a maximum amount of MEG while at the same time removing the carboxylic acid salts, including:

Method for regenerating an aqueous solution of MEG containing salts with purge treatment

The present invention proposes to use a dry stream which is rich in C4 to C10 hydrocarbons as stripping agent for improving the regeneration of the liquid desiccant according to the invention. This dry stream rich in C4 to C10 hydrocarbons is extracted from the gas derived from the dehydration, for example during a step of extraction of NGL located downstream of the gas dehydration unit. The stream of stripping agent recovered at the outlet of the liquid desiccant regeneration unit may be recycled into the process of the invention or sent to a unit external to the process according to the invention. For example, this stream of stripping agent recovered at the outlet of the regeneration unit is sent to a unit which can receive wet condensates, such as a three-phase separation unit at the inlet of a crude gas processing plant, a condensate stabilization unit, etc.

Process for dehydrating a hydrocarbon-based gas

Growing community of inventors

Rueil-Malmaison, France

Guillaume Parer