This invention relates to a process for adsorbing sulfur dioxide impurity from a gas. More particularly, it relates to improving an impure gas and producing a hydrogen sulfide-rich gas.
Even as a minor component in a gas, sulfur dioxide is an obnoxious and harmful impurity. Its effective removal from a gaseous mixture which normally must be vented to the atmosphere is a continuing problem. There is a need for an efficient and economic means for removing sulfur dioxide impurity from a gas, especially for a regenerative adsorbent system wherein oxidized sulfur is converted to reduced sulfur suitable for use as feed to a Claus sulfur plant and the like. The present invention provides an effective solution to the problem.