MARINE EXHAUST GAS PURIFICATION DEVICE AND SHIP ENGINE SYSTEM

摘要

A marine exhaust gas purification device provided with: an exhaust line having a first exhaust line for allowing exhaust gas to pass through during operation in a gas mode, and a second exhaust line for allowing exhaust gas to pass through during operation in a diesel mode; an exhaust gas purification section for reducing the nitrogen oxide concentration in the exhaust gas passing through the second exhaust line, the exhaust gas purification section being provided to the second exhaust line; and an exhaust line switching part capable of switching between a first switched state for allowing exhaust gas to pass through the first exhaust line, and a second switched state for allowing exhaust gas to pass through the second exhaust line.