B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 53/14 (2006.01) B01D 53/62 (2006.01) B01D 53/86 (2006.01)
Patent
CA 2521195
Novel solvents and methods of use for the removal of CO2 from flue gas, natural gas, hydrogen gas, synthesis gas, and other process and waste gas streams are provided. The solvent contains an alkali salt such as potassium carbonate and a polyamine such as piperazine (PZ) where the polyamine concentration is at least 1.5 equivalents/Kg H2O and the alkali salt concentration is at least 0.5 equivalents/Kg H2O. The preferred alkali salt/polyamine ratio is from approximately 1:2 to 2:1, and no additional alcohol is required for solubilizng the PZ. This chemical solvent and method of use provides efficient and effective removal of CO2 from gaseous streams and other sources.
L'invention concerne de nouveaux solvants et procédés d'utilisation en vue de l'élimination du CO¿2? émanant de gaz de carneau, de gaz naturel, de gaz d'hydrogène, de gaz de synthèse et d'autres écoulements de gaz de transformation et résiduaires. Le solvant contient un sel alcalin, notamment un carbonate de potassium et une polyamine, notamment un pipérazine (PZ), dont la teneur est d'au moins 1,5 équivalents/Kg H¿2?O alors que la teneur en sel alcalin est d'au moins 0,5 équivalents/Kg H¿2?O. Le rapport sel alcalin/polyamine préféré oscille entre environ 1:2 et 2:1, et aucun alcool supplémentaire n'est nécessaire pour solubiliser le PZ. Ce solvant chimique et son procédé d'utilisation garantissent une élimination efficace de CO¿2? provenant d'écoulements gazeux et d'autres sources.
Cullinane John
Rochelle Gary
Board Of Regents The University Of Texas System
Norton Rose Canada S.e.n.c.r.l.,s.r.l./llp
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