EXHAUST GAS PURIFICATION SYSTEM AND SHIP HAVING THE SAME

摘要

An exhaust gas purification system includes, as an exhaust gas path of an engine to be mounted in a ship, a main path which is in communication with outside, a bypass path which branches off from a halfway portion of the main path, and a combined casing with which both the main path and the bypass path are in communication. A selective catalyst reduction device is accommodated in the combined casing at a location close to the main path. A path-switching member which switches exhaust gas moving direction is placed in a branched portion between the main path and the bypass path. A reducing agent injection body is placed in the main path between the path-switching member and the combined casing.

主权项

1. An exhaust gas purification system comprising, as exhaust gas paths of an engine to be mounted in a ship, a main path which is in communication with outside and a bypass path which branches off from a halfway portion of the main path, and comprising a combined casing with which both the main path and the bypass path are in communication, wherein
a selective catalyst reduction device which accelerates reduction of NOx existing in exhaust gas of the engine is accommodated in the combined casing at a location close to the main path, a path-switching member which switches exhaust gas moving directions between the main path and the bypass path is placed in a branched portion between the main path and the bypass path, and a reducing agent injection body of a reducing agent supply device which supplies reducing agent to exhaust gas is placed in the main path between the path-switching member and the combined casing.