Exhaust gas filter, method of manufacturing the exhaust gas filter, and exhaust gas processing device using the exhaust gas filter

摘要

An exhaust gas filter including a filter base body which has many pores and has a flow-in surface, in which exhaust gas containing particulate matter flows, and an exhaust surface, from which purified gas is exhausted, the exhaust gas filter having at least a function of removing the particulate matter from the exhaust gas by passing the exhaust gas through the filter base body from the flow-in surface toward the exhaust surface, wherein a micropore structure, in which agglomerates of particulates having fine gaps are connectedly provided and which is air-permeable and which collects the particulate matter contained in the exhaust gas, is provided at the filter base body at a surface and/or within the pores which open and communicate the flow-in surface and the exhaust surface to and with one another. A method of manufacturing the exhaust gas filter comprises forming a micropore structure precursor and sintering the micropore structure precursor. An exhaust gas processing device comprises a flow-in port, an exhaust port, a gas flow path connecting the flow-in port and the exhaust port, and the exhaust gas filter.