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1. (WO2015047712) IONIC LIQUID AND SOLVENT MIXTURES FOR HYDROGEN SULFIDE REMOVAL

Pub. No.:    WO/2015/047712    International Application No.:    PCT/US2014/054641
Publication Date: Fri Apr 03 01:59:59 CEST 2015 International Filing Date: Wed Sep 10 01:59:59 CEST 2014
IPC: B01D 53/18
B01D 53/52
Applicants: UOP LLC
Inventors: BRODERICK, Erin M.
BHATTACHARYYA, Alakananda
MEZZA, Beckay J.
Title: IONIC LIQUID AND SOLVENT MIXTURES FOR HYDROGEN SULFIDE REMOVAL
Abstract:
The invention comprises a process for removal of hydrogen sulfide from gaseous mixtures. The process involves the use of a mixture of a physical absorption solvent and an ionic liquid. The mixtures provided improved absorption of hydrogen sulfide, when compared to physical absorption solvents without the ionic liquid at low partial pressures of hydrogen sulfide. A regeneration cycle involving the addition of a solvent, such as water, is used to regenerate the mixture.