A method and apparatus for desulfurizing a gas and regenerating a sorbent is disclosed. The sulfur-containing feed gas which can be an effluent gas from a coal gasification reactor, for example, is desulfurized with a particulated metallic oxide sorbent in a transport riser. The sulfided sorbent is than...http://www.google.com/patents/US5447702?utm_source=gb-gplus-sharePatent US5447702 - Fluid bed desulfurization