US 7,597,746 B2
Configurations and methods for acid gas and contaminant removal with near zero emission
John Mak, Santa Ana, Calif. (US); and Curt Graham, Mission Viejo, Calif. (US)
Assigned to Fluor Technologies Corporation, Aliso Viejo, Calif. (US)
Appl. No. 10/532,262
PCT Filed Feb. 12, 2003, PCT No. PCT/US03/04376
§ 371(c)(1), (2), (4) Date Sep. 27, 2005,
PCT Pub. No. WO2004/058384, PCT Pub. Date Jul. 15, 2004.
Claims priority of provisional application 60/434358, filed on Dec. 17, 2002.
Prior Publication US 2006/0150812 A1, Jul. 13, 2006
Int. Cl. B01D 53/14 (2006.01)
U.S. Cl. 95—169  [95/181; 95/183; 95/199; 95/229; 95/235; 95/236; 95/237; 96/234; 96/243] 19 Claims
OG exemplary drawing
 
1. A gas treatment plant comprising:
a first absorber in which a lean solvent absorbs carbon dioxide, hydrogen sulfide, and a hydrocarbon;
a second absorber fluidly coupled to the first absorber in which at least part of the hydrogen sulfide is separated from the carbon dioxide;
a sulfur plant that receives the at least part of the hydrogen sulfide to produce a sulfur product and a tail gas, wherein at least part of the tail gas is hydrogenated and is recycled to the absorber; and
a regenerator that is fluidly coupled to the first and second absorber, wherein the regenerator produces an acid gas, and wherein at least part of the hydrocarbon is separated from the acid gas as a hydrocarbon liquid.