B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 53/14 (2006.01)
Patent
CA 2498195
A plant includes an absorber (105) that receives a feed gas (10) at a pressure of at least 400 psig and comprising at least 5 mol% carbon dioxide, wherein the absorber (105) is operated at an isothermal or decreasing top -to-bottom thermal gradient, and wherein the absorber (105) employs a physical solvent to at least partially remove an acid gas from the feed gas (10). Such configuration advantageously provide cooling (108) by expansion of the rich solvent (21) generated in the absorber (105), wherein both a semi-rich solvent (13) generated and recycled to the absorber (105) and the feed gas (10) are cooled by expansion of the rich solvent (21).
Selon l'invention, une installation comporte un absorbeur (105) recevant un gaz d'alimentation (10) à une pression d'au moins 400 psig, contenant au moins 5 % molaires de dioxyde de carbone. Ledit absorbeur (105) est employé à un gradient thermique sommet vers base isotherme ou diminuant, et fait intervenir un solvant physique afin d'extraire au moins partiellement un gaz acide du gaz d'alimentation (10). De telles configurations permettent, de manière avantageuse, d'obtenir un refroidissement (108) par expansion du solvant riche (21) produit dans l'absorbeur (105), un solvant semi-riche (13) produit et recyclé vers l'absorbeur (105) et le gaz d'alimentation (10) étant refroidis par expansion du solvant riche (21).
Fluor Corporation
Smart & Biggar
LandOfFree
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