公开(公告)号：US4552635A

公开(公告)日：1985-11-12

申请号：US639528

申请日：1984-08-09

申请人： Theodore J. Jenczewski ,  William H. Skinner, Jr.

发明人： Theodore J. Jenczewski ,  William H. Skinner, Jr.

IPC分类号： B01D53/50 ,  B01D61/44 ,  C01B17/74 ,  B01D13/02

CPC分类号： C01B17/745 ,  B01D53/501 ,  B01D61/445

摘要： Methods for removal of sulfur oxides, e.g., SO.sub.2 and SO.sub.3, from sulfuric acid tail gases by alkaline solution scrubbing, acidification of the alkaline scrubbing solution containing absorbed sulfur valves, liberation of concentrated SO.sub.2 from the acidified solution and regeneration of the alkaline scrubbing solution by means of two- or three-compartment electrodialytic water splitters are disclosed. A completely closed loop method suitable for continuous removal of sulfur oxides from sulfuric acid tail gas, recovery of concentrated SO.sub.2 for use in sulfuric acid plants, regeneration of alkaline scrubbing process solution and improvement in the water balance in sulfuric acid plant by use of two- and three-compartment electrodialytic water splitters is also disclosed.

摘要翻译： 通过碱性溶液洗涤从硫酸尾气中除去SO2和SO3的硫氧化物的方法，含有吸收的硫化氢阀的碱性洗涤溶液的酸化，浓缩的SO 2从酸化溶液中的释放和碱性洗涤溶液的再生 公开了两室或三室电渗析水分离器的方法。 一种完全闭环的方法，适用于从硫酸尾气中连续除去硫氧化物，回收硫酸设备中使用的浓硫酸，再生碱性洗涤工艺溶液，并通过使用二氧化硫改善硫酸厂的水分平衡， 还公开了三室电渗析水分离器。