公开(公告)号：US3932584A

公开(公告)日：1976-01-13

申请号：US436721

申请日：1974-01-25

申请人： Tokuzo Asakusa ,  Taketoshi Honma ,  Isao Hirashita ,  Koichi Yasui ,  Yoshio Nishi ,  Koichi Murayama

发明人： Tokuzo Asakusa ,  Taketoshi Honma ,  Isao Hirashita ,  Koichi Yasui ,  Yoshio Nishi ,  Koichi Murayama

IPC分类号： B01D53/52 ,  B01D53/77 ,  C01B17/05 ,  C10K1/12 ,  D21C11/06 ,  C01B17/16

CPC分类号： C01B17/05 ,  B01D53/523

摘要： Hydrogen sulfide-containing waste gases whose complete treatment is indispensable from the viewpoint of environmental pollution problem, are purified in two steps consisting of a first step in which the gases are absorbed in an aqueous solution of sodium hydroxide or/and sodium sulfide, and a second step in which sulfuric acid and sulfur dioxide gas are simultaneously introduced into the resulting solution after absorption to deposit sulfur. Further, for recovery of the resulting sulfur, a particular apparatus is provided.

摘要翻译： 从环境污染问题的观点来看，完全处理是必不可少的含硫化氢废气，由两个步骤进行纯化，第一步是将气体吸收在氢氧化钠或/和硫化钠的水溶液中， 第二步是将硫酸和二氧化硫气体在吸收后同时引入所得溶液中以沉积硫。 此外，为了回收所得的硫，提供了特定的装置。