DUAL-FUEL ENGINE EXHAUST HEAT RECOVERY APPARATUS AND DUAL-FUEL ENGINE EXHAUST HEAT RECOVERY APPARATUS CONTROL METHOD

摘要

PROBLEM TO BE SOLVED: To appropriately denitrate dual-fuel engine exhaust gas and appropriately recover exhaust heat.;SOLUTION: A dual-fuel engine exhaust gas recovery apparatus comprises: a switching damper supplying and distributing dual-fuel engine exhaust gas discharged from a dual-fuel engine to a denitration distribution channel 20 and an exhaust heat recovery distribution channel 19; and a controller controlling the switching damper to change the distribution of the dual-fuel engine exhaust gas to be supplied between the denitration distribution channel 20 and the exhaust heat recovery distribution channel 19 on the basis of fuels used in the dual-fuel engine. The dual-fuel engine exhaust heat recovery apparatus 1 thus configured can appropriately denitrate the dual-fuel engine exhaust gas and appropriately recover exhaust heat from the dual-fuel engine exhaust gas by appropriately distributing the dual-fuel engine exhaust gas to the exhaust heat recovery distribution channel 19 and the denitration distribution channel 20 on the basis of the fuels supplied to the dual-fuel engine, even if the nitrogen oxide concentration of the dual-fuel engine exhaust gas changes.;COPYRIGHT: (C)2015,JPO&INPIT