PARTICULATE MATTER REMOVAL DEVICE

摘要

Provided is a particulate matter removal device wherein the temperature difference between an upstream part and a downstream part within the filter can be reduced and the entire filter can be heated with good uniformity when the filter is heated and regenerated. This particulate matter removal device is equipped with: multiple filter storage chambers (12) into each of which an exhaust gas (4) is introduced; filters (14) provided in the filter storage chambers (12) to trap particulate matter in the exhaust gas (4); and valves (8), which are provided on the inlet side of the filter storage chambers (12), and which are open during trapping of the particulate matter, thereby allowing the exhaust gas (4) to pass through, and are closed during regeneration, thereby blocking the exhaust gas (4). This particulate matter removal device is further equipped with: bypass passages (20) that supply a portion of the exhaust gas (4) as a heat transfer gas (22) to the upstream side of the filters (14) during regeneration of the filters (14); and heating devices (24) that heat the heat transfer gas (22) and then supply the heated gas to the filters (14).