Patent ID: 6217839
Filing Date: 2001-04-17
Classification: B01D

Abstract:
A process for treating a gas stream containing a sulfur compound, the process comprising:a) passing the gas stream through a gas inlet into a lower portion of a scrubber comprising a vertically oriented vessel;b) contacting the gas stream with a downwardly flowing quench medium introduced into the vessel through a quench zone inlet at the top of a quench zone to yield both an upwardly flowing quenched gas stream and a downwardly flowing quench effluent within the vessel;c) contacting the quenched gas stream with a downwardly flowing liquid adsorbent introduced into the vessel through an adsorption zone inlet at the top of an adsorption zone above the quench zone at adsorption conditions to yield both an upwardly flowing treated gas stream and a downwardly flowing adsorption effluent within the vessel;d) combining the quench effluent and the adsorption effluent in a liquid collection zone in the vessel below the quench zone to yield a bottoms liquid product within the vessel;e) withdrawing the bottoms liquid product from the vessel through a liquid outlet;f) contacting a first portion of the bottoms liquid product with an oxidizing agent and a solid catalyst at oxidation conditions to yield a treated liquid;g) withdrawing the treated gas stream from an upper portion of the vessel through a gas outlet; andh) adding water to the vessel through a water inlet.