WSA process developed by Haldor Ropsoe A/S, Denmark is an acid preparation technology from water contained sour gas, which converts refinery sour gas to concentrated sulfuric acid directly.

• 含水酸性气制酸 (WSA)的技术是丹麦托普索公司开发的一种酸性气直接制酸技术 ,与炼油厂通常采用的超级克劳斯法生产硫磺的工艺相比 ,该技术具有工艺流程简单 ,经济效益好等特点 ;