| 摘要 |
<p>Method for deacidifying a gas, particularly natural gas, containing H2S and/or CO2 as well as mercaptans, wherein the gas is brought in contact with a primary absorption zone (3) with a generatable absorbing liquid, a purified gas is evacuated at the head of the zone (3) and a primary liquid containing H2S and CO2 is evacuated at the bottom, said liquid is subjected to a regeneration in a zone (2) and the regenerated liquid is recycled (29, 32, 35) to the zone (3). A fraction (37) of the regenerated primary liquid is taken and is brought in contact in a secondary absorption zone (4) with the gas (5) issued from the zone (3), the gas purified at head (6) is evacuated from the zone (4) while at the bottom of said zone a secondary stream (39) of liquid laden with mercaptans is drawn (12) and relieved (41) in order to produce a secondary regenerated liquid (45) which is adjoined (32) to the primary regenerated liquid before drawing the fraction (37).</p> |
