Total Sa

Institut Francais Du Pe'trole

Ifp Energies Nouvelles

Viep Hoang Dinh

Ludovic Raynal

Julia Magne-Drisch

Jean Elgue

Gauthier Perdu

Damien Roquet

Anne-Claire Lucquin

Christina Streicher

Bénédicte Chommeloux

Jean-Paul Cousin

The gas-liquid contact column comprises at least an upper trayand a lower tray, as well as a downcomerfor sending the liquid from the upper tray to the lower tray. The trays comprise gas ports. A packingis arranged between the upper tray and the lower tray. The upper tray comprises meansfor withdrawing liquid from the upper tray, the liquid withdrawn being distributed over the packing. The gas-liquid contact column is particularly well suited for absorption of the COand of the HS contained in a natural gas or in a syngas, and for capture of the COcontained in combustion fumes.

Gas-liquid contact column and method using a combination of trays and packings

The invention provides a method of extracting the hydrogen sulfide contained in a gas comprising aromatic hydrocarbons, wherein the following stages are carried out: a) contacting said gas with an absorbent solution so as to obtain a gas depleted in hydrogen sulfide and an absorbent solution laden with hydrogen sulfide, b) heating and expanding the hydrogen sulfide-laden absorbent solution to a predetermined temperature and pressure so as to release a gaseous fraction comprising aromatic hydrocarbons and to obtain an absorbent solution depleted in aromatic hydrocarbons, said temperature and pressure being so selected that said gaseous fraction comprises at least 50% of the aromatic hydrocarbons and at most 35% hydrogen sulfide contained in said hydrogen sulfide-laden absorbent solution, c) thermally regenerating the absorbent solution depleted in aromatic hydrocarbon compounds so as to release a hydrogen sulfide-rich gaseous effluent and to obtain a regenerated absorbent solution.

Method of extracting the hydrogen sulfide contained in a hydrocarbon gas

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Bizanos, France

Viep Hoang Dinh