Heat Recovery Steam Generator System Including NOx Removal Catalyst Arranged in Multi-stage Pattern

摘要

The present invention is a technology that utilizes a plurality of spaces merely serving as a maintenance in the heat recovery boiler as the installation space of the catalyst layer for removing nitrogen oxides in the exhaust gas, the temperature band of the exhaust gas passing through the maintenance space It characterized in that the multi-stage arrangement in a separable manner for the flue gas denitrification catalyst layer having an activity in. Accordingly, not only can the space efficiency inside the boiler be improved, but also the flexibility of the process can be achieved, thereby optimizing the heat recovery. In particular, since the exhaust gas treatment in the low temperature zone by the multi-stage arrangement of the catalyst layer is possible, problems such as suppression of generation of catalyst poison forming material, prolongation of catalyst life, and suppression of corrosion of the device can be solved at once.;Nitrogen oxide, denitrification catalyst, maintenance and repair space, heat recovery boiler, low temperature treatment