Reactor equipped with a heat exchange function

In addition to high energy efficiency comparable to self heat integrated is obtained, the reactor can be significantly reduced pressure loss, and by placing the filter inside the reactor flow path, thermal regeneration is easy discharging particulate matter reducer (DPF) is a suitable reactor for applications such as. The reactor heat transfer surfaces, preferably one or preferably at the center of both flow paths of the two-fluid countercurrent heat exchange structure having two flow paths separated by the heat transfer surface, which is formed by the waveform transmission body in part, by providing a heating means such as a catalyst layer and an electric heater, in which mutually to heat transfer from the downstream one fluid upstream of the other fluid between the two fluids. Further, the flow path of the reactor may be provided with a filter at the same position and / or near the heating means.