| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a regeneration device for low-temperature working denitration catalysts, capable of providing a means for recovering performance of the denitration catalysts when deteriorated due to generation of acid ammonium sulfate by means of a simple and low-cost device in a large diesel main engine for a vessel. <P>SOLUTION: The low-temperature denitration device comprises denitration catalysts provided on an exhaust gas passage of the diesel main engine in parallel to be respectively opened/closed by a plurality of opening/closing valves, and a regeneration mechanism for the denitration catalysts composed to operate when exhaust gas temperature is a specified value or less. For regeneration of the denitration catalysts, exhaust gas from a diesel engine for power generation, provided separately from the diesel main engine, and of which exhaust gas temperature is higher than the specified value, is sent to the exhaust gas to the denitration catalyst to raise the temperature of the denitration catalyst by opening the opening/closing valve, and thereby the denitration catalyst is regenerated. <P>COPYRIGHT: (C)2010,JPO&INPIT |
