Configurations and methods for sox removal in...

B - Operations – Transporting – 01 – D

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B01D 53/86 (2006.01) B01D 53/50 (2006.01) B01D 53/52 (2006.01) C01B 17/04 (2006.01)

Patent

CA 2586381

Sulfur oxides are removed from an oxygen-containing acid gas (102) in configurations and methods in which oxygen is removed from the acid gas using reducing gases at relatively high temperature. The so treated acid gas is then fed to a direct reduction reactor (130) in which the sulfur species are converted to elemental sulfur (132). Contemplated configurations are particularly effective and economically attractive as they are generally not limited by reaction equilibrium as present in a Claus reaction and do not require solvent and solvent-associated equipment.

L'invention concerne des dispositifs et des procédés destinés à l'extraction d'oxydes de soufre d'un gaz acide contenant de l'oxygène, l'oxygène étant extrait du gaz acide par réduction des gaz à température relativement élevée. Les gaz acides ainsi traités sont ensuite injectés dans un réacteur à réduction directe dans lequel les espèces sulfureuses sont transformées en soufre élémentaire. Les dispositifs de l'invention sont particulièrement efficaces et intéressants du point de vue économique, car ils ne sont pas limités par des conditions d'équilibre, comme dans un procédé Claus, et ne nécessitent pas de solvants ou d'équipements associés à des solvants.

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