Process for treating a gas stream or effluent

B - Operations – Transporting – 01 – D

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B01D 53/40 (2006.01) B01D 53/02 (2006.01) B01D 53/14 (2006.01)

Patent

CA 2759404

One exemplary embodiment can be a process for treating a tail gas stream from a sulfur recovery zone. Generally, the process includes passing the tail gas stream through, in sequence, a hydrogenation zone, a quench zone, and an acid gas removal zone using a solvent. The solvent can include at least one of a dimethyl ether of polyethylene glycol, a N-methyl pyrrolidone, a N-formyl morpholine, a N-acetyl morpholine, a tetrahydro-1,4-oxazine, and a mixture comprising diisopropanolamine and tetrahydrothiophene-1,1-dioxide.

Selon l'invention, un mode de réalisation à titre d'exemple peut être un procédé pour traiter un courant de gaz de queue provenant d'une zone de récupération de soufre. D'une manière générale, le procédé comprend l'opération consistant à faire passer le courant de gaz de queue à travers, de façon séquentielle, une zone d'hydrogénation, une zone de désactivation et une zone d'élimination de gaz acide à l'aide d'un solvant. Le solvant peut comprendre au moins l'un parmi un éther diméthylique de polyéthylène glycol, une N-méthylpyrrolidone, une N-formylmorpholine, une N-acétylmorpholine, une tétrahydroxy-1,4-oxazine, et un mélange comportant une diisopropanolamine et du tétrahydrothiophène-1,1-dioxyde.

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