公开(公告)号：US3848860A

公开(公告)日：1974-11-19

申请号：US33350673

申请日：1973-02-20

申请人： TAISEI CORP

发明人： MAEDA H ,  MOHRI E ,  MATSUI Y ,  IKEDA T

IPC分类号： C22B15/06 ,  C21C5/40 ,  F23J11/02 ,  F24F7/06 ,  C21C5/38

CPC分类号： C21C5/40 ,  Y02P10/283

摘要： 1. A WASTE GAS COLLECTING DEVICE OF A CONVERTER, COMPRISING AN APRON ARRANGED TO COVER THE ENTIRE SHELL OF THE CONVERTER EXCEPT FOR THE MOUTH OF SAID CONVERTER, OPPOSED UPRIGHT WINDSHIELD PLATES PROVIDED ON THE FRONT SIDE OF THE CONVERTER TO SHIELD BOTH SIDES OF THE CONVERTER AND APRON, A WINDSHIELD PLATE SUSPENDED BELOW THE CONVERTER, A WASTE GAS HOOD ARRANGED ABOVE THE REAR PORTION OF THE CONVERTER AND EXTENDING FORWARDLY TO A POINT TO COVER THE MOUTH OF THE CONVERTER DURING THE REACTION STAGE, SAID WASTE GAS HOOD BEING PROVIDED WITH AN OPENING AT THE FORWARD END PORTION THEREOF, AND A MOVABLE HOOD SLIDINGLY MOVED ON SAID WASTE GAS HOOD TO OPEN AND CLOSE SAID OPENING AND ADAPTED TO COVER THE MOUTH OF THE CONVERTER OVER THE SECTION OF THE ARCUATE LOCUS OF MOVEMENT OF THE CONVERTER MOUTH FROM THE POSITION IN THE REACTION STAGE TO THE POSITION IN THE MATERIAL CHARGING STAGE, SAID DEVICE

BEING USED IN A WASTE GAS TREATMENT SYSTEM HAVING A WASTE GAS EXHAUST ROUTE INCLUDING THE WASTE GAS HOOD, A DUST CHAMBER A WASTE HEAT BOILER AND A COTTRELL PRECIPITATOR, AND A SULFURIC ACID PLANT IN WHICH A WASTE GAS EMERGING FROM THE CONVERTER DURING THE REACTION STAGE AND SUPPLIED THERETO THROUGH SAID WASTE GAS EXHAUST ROUTE BY AN EXHAUST FAN IS DESULFURIZED THROUGH A PROCESS OF RECOVERING SO2 FROM SAID WASTE GAS IN THE FORM OF SULFURIC ACID.