SCR SYSTEM HAVING BYPASS SYSTEM

摘要

Disclosed herein is a selective catalytic reduction (SCR) system for a ship, for purifying exhaust gas emitted from the exhaust gas equipment of the ship and exhausting the purified exhaust gas from the ship. The disclosed SCR system comprises: an SCR reactor connected at a front end thereof to the exhaust gas equipment, and including a catalyst that is activated by exhaust gas entering therein; a reducing agent supply line provided to supply NH3 or urea into the SCR reactor; and a bypass system for causing the exhaust gas flow emitted from the exhaust gas equipment to bypass the SCR reactor under abnormal conditions.