公开(公告)号：EP2065640A3

公开(公告)日：2015-10-14

申请号：EP08163065.9

申请日：2008-08-27

申请人： Korea Institute of Energy Research

发明人： Kim, Hyouck-ju ,  Park, Hwa-choon ,  Chung, Dae-hun ,  Choi, Jae-joon

IPC分类号： F22B35/00 ,  F22B1/18 ,  F22B7/02 ,  F22B7/12 ,  F22B9/14 ,  F01N9/00

CPC分类号： F01N9/00 ,  F01N2570/14 ,  F22B9/14 ,  Y02A50/2344 ,  Y02T10/47

摘要： Disclosed therein is a gas temperature control apparatus for a DeNOx boiler in an engine cogeneration plant, which is installed to keep a reaction temperature of denitrification catalyst used to remove nitrogen oxide generated from an internal combustion engine in the engine cogeneration plant. The gas temperature control apparatus includes a connection passageway between a high-temperature gas part of a combustion tank of the boiler and an intermediate-temperature gas part formed after a first heat exchange, and a flow control valve mounted in the passageway to thereby control a volume of bypass combustion gas. The gas temperature control apparatus can easily raise temperature of combustion gas even though temperature of the inside water of the boiler does not reach a normal operation state since the flow control valve mounted in the connection passageway between the high-temperature gas part and the intermediate-temperature gas part, thereby greatly reducing a time period to reach an activation temperature of the denitrification catalyst.