Institut Francais Du Pe'trole

Prosernat

Chantal Rigaill

Fabrice Lecomte

Géraldine Laborie

Michel Thomas

Eszter Toth

Lionel Waintraub

The raw natural gas is deacidized and dehydrated in units DA and DH. The treated gas is then purified by adsorption of the mercaptans in first enclosure A. Part of the purified gas is heated in E, then fed into second enclosure Aso as to discharge the water adsorbed by the adsorbent material contained in this second enclosure. A water-laden purge gas is fed into third enclosure Acontaining a mercaptan-laden adsorbent material. In A, the mercaptans are desorbed and replaced by the water. The gas from the third enclosure is washed in unit L, then recycled.

Method of purifying a natural gas by mercaptan adsorption

Method of regenerating a glycol solution containing water, hydrocarbons and salts. The glycol solution is expanded in drum (), then distilled in column (). The concentrated glycol collected at the level of reboiler () is placed under vacuum to vaporize the water and to precipitate the salts. The salts are separated from the glycol in separation device (). The concentrated glycol freed of the salts is stored in capacity ().

Method of regenerating an aqueous glycol solution containing salts

The raw natural gas is pretreated in treating unitThe treated gas is then purified by adsorption of the mercaptans in first enclosureThe various cuts that make up the purified gas are separated in fractionating unitPart of the methane making up the purified gas is saturated with a C5+ hydrocarbon in contactorthen it is fed into second enclosureso as to regenerate the adsorbent material contained in this second enclosure. The gas from the second enclosure is washed in unitthen recycled.

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Yerres, France

Chantal Rigaill