-
公开(公告)号：US4021202A
公开(公告)日：1977-05-03
申请号：US653147
申请日：1976-01-28
申请人： Edwin L. Field , Charles R. Lamantia , Richard R. Lunt , James E. Oberholtzer , James R. Valentine
发明人： Edwin L. Field , Charles R. Lamantia , Richard R. Lunt , James E. Oberholtzer , James R. Valentine
CPC分类号： B01D53/501 , B01D53/50
摘要： Method and apparatus for removing sulfur dioxide from stack gases. The stack gases are scrubbed with an aqueous wash liquid containing one or more alkali metal compounds which react to form the bisulfite, sulfite and sulfate salts of the alkali metal. The spent absorbent liquid effluent is then treated with calcium compounds in at least two separate reaction stages, the conditions of ion concentration and pH of the first stage being maintained to favor the precipitation of calcium sulfate in the presence of SO.sub.3.sup.= ions. In the succeeding reaction stages the precipitation of the desired amount of SO.sub.3.sup.= ions is carried out to form calcium sulfite. The resulting compound of calcium with sulfite and sulfate (which may in part be in the form of mixed crystals) are removed and the regenerated liquid is recycled.
摘要翻译： 从烟气中除去二氧化硫的方法和装置。 堆叠气体用含有一种或多种碱金属化合物的水性洗涤液体洗涤，所述碱金属化合物反应形成碱金属的亚硫酸氢盐，亚硫酸盐和硫酸盐。 然后在至少两个独立的反应阶段用废弃的吸收剂液体流出物用钙化合物进行处理，保持离子浓度和第一阶段的pH条件以有利于在SO 3离子存在下沉淀硫酸钙。 在随后的反应阶段，进行所需量的SO 3离子的析出以形成亚硫酸钙。 所得到的具有亚硫酸盐和硫酸盐（其可以部分为混合晶体的形式）的钙化合物被除去，再生的液体被再循环。
-
公开(公告)号：US3944649A
公开(公告)日：1976-03-16
申请号：US424212
申请日：1973-12-13
申请人： Edwin L. Field , Charles R. Lamantia , Richard R. Lunt , James E. Oberholtzer , James R. Valentine
发明人： Edwin L. Field , Charles R. Lamantia , Richard R. Lunt , James E. Oberholtzer , James R. Valentine
CPC分类号： B01D53/501 , B01D53/50
摘要： Method and apparatus for removing sulfur dioxide from stack gases. The stack gases are scrubbed with an aqueous wash liquid containing one or more alkali metal compounds which react to form the bisulfite, sulfite and sulfate salts of the alkali metal. The spent absorbent liquid effluent is then treated with calcium compounds in at least two separate reaction stages, the conditions of ion concentration and pH of the first stage being maintained to favor the precipitation of calcium sulfate in the presence of SO.sub.3.sup.= ions. In the succeeding reaction stages the precipitation of the desired amount of SO.sub.3.sup.= ions is carried out to form calcium sulfite. The resulting compounds of calcium with sulfite and sulfate (which may in part be in the form of mixed crystals) are removed and the regenerated liquid is recycled.
摘要翻译： 从烟气中除去二氧化硫的方法和装置。 堆叠气体用含有一种或多种碱金属化合物的水性洗涤液体洗涤，所述碱金属化合物反应形成碱金属的亚硫酸氢盐，亚硫酸盐和硫酸盐。 然后在至少两个独立的反应阶段用废弃的吸收剂液体流出物用钙化合物进行处理，保持离子浓度和第一阶段的pH条件以有利于在SO 3离子存在下沉淀硫酸钙。 在随后的反应阶段，进行所需量的SO 3离子的析出以形成亚硫酸钙。 所得到的具有亚硫酸盐和硫酸盐（其可以部分为混合晶体的形式）的钙化合物被除去，再生的液体被再循环。
-
搜索结果
2 条记录 (耗时 0.012 秒)
