Off-gas processing | Amine regeneration

Sour refinery off-gasses contain large amounts of H₂S, which can be harmful to human health and the environment if emitted in large amounts.

H₂S in refinery recycle and off-gasses is removed from the process by absorption in amine absorbers. The rich amine loaded with H₂S is regenerated in the amine regeneration unit by stripping off the acid gas.

The acid gas, primarily consisting of H₂S and water vapor, is subsequently routed to sulfur recovery unit or a wet gas sulfuric acid unit (WSA) and the regenerated lean amine solution is recycled to the amine absorbers.

Process licensing

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Applications within this area

Claus tail gas treatment

Topsoe offers a range of tail gas treatment catalysts that allow you to reach sulfur recoveries of 99.9% and comply with today's tight regulations.

Fuel gas hydrotreating

Topsoe’s customized catalytic solution to clean up refinery fuel gas is the only offering of its kind and is commercially proven to improve refinery operations.

Sour water stripping

Topsoe's technology helps you to remove the sulfur compounds and ammonia impurities from your derived sour water before you reuse it in the refinery or discharge it.

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