公开(公告)号：US3780166A

公开(公告)日：1973-12-18

申请号：US3780166D

申请日：1969-07-08

申请人： METALLGESELLSCHAFT AG

发明人： DRECHSEL H ,  DORR K ,  GRIMM H ,  ROWEDDER G

IPC分类号： C01B17/765 ,  C01B17/76

CPC分类号： C01B17/7655

摘要： A PROCESS OF CATALYTICALLY REACTING SO2-CONTAINING GAS TO FORM SO3 IN A CATALYTIC PLANT INCLUDING A PLURALITY OF CATALYST STAGES AND IN WHICH SO3 IS CONDENSED BETWEEN CATALYST STAGES FORMING SULFURIC ACID, CHARACTERIZED IN THAT:

(A) THE SO3-CONTAINING GAS LEAVING THE FIRST OF TWO SUCCESSIVE STAGES IS TRANSFERRED ALONG A CLOSED FLOW PATH INTO THE SECOND OF SAID TWO STAGES; (B) A PARTIAL STREAM IS SEPARATED FROM SAID TRANSFERRED STREAM AND COOLED, AND SO3 IS CONDENSED FROM THE PARTIAL STREAM; (C) SAID PARTIAL STREAM FOLLOWING SAID CONDENSING IS COMBINED WITH THE BALANCE OF SAID TRANSFERRED STREAM AND AND THE COMBINED STREAM IS INTRODUCED INTO THE SECOND CATALYST STAGE.