Heat exchanger-integrated reaction device having supplying and return ducts for reaction section

A heat exchanger-intergrated reaction device, comprising:

• the heat exchange section having an integrated stacking structure of a plurality of planar flow path layers divided by sheet partition walls, which serve as heat exchange surfaces,
• the plurality of planar flow paths extending in one direction with two types of flow paths, namely a plurality of supplying and a plurality of return paths of the same fluid, alternately placed adjacent to each other,
• regions having outlets of the supplying paths and inlets of the return paths being provided on one side surface of the heat exchange section located at one end of the extending direction,
• the regions having the outlets of the plurality of supplying paths being provided with openings for discharging the fluid on the cross sections of every other stacked layers of the plurality of the planar flow paths, whereas the regions having the inlets of the plurality of return paths being provided with openings for receiving the fluid on the cross sections of every other stacked layers of the plurality of the planar flow paths not provided with the afore-mentioned openings,
• the reaction section in which reaction elements and/or heating elements are placed comprising at least one supplying duct and at least one return duct, wherein the supplying ducts and the return ducts being made to be connected with each other with space provided facing opposite to the heat exchange section,
• characterized in that
• at least one of the regions where the outlets of the supplying paths exist, or where the inlets of the return paths exist, is provided at two or more positions,
• space is provided between the heat exchange section and the reaction section, the space being divided into a plurality of collection ducts for collecting the flows of the fluid from the regions having the openings for discharging the fluid a smaller number of supplying ducts of the reaction section and a plurality of distribution ducts for distributing the flows of the fluid from the return duct of the reaction section into a larger number of regions having the openings for receiving the fluid, and that openings for allowing all the collection ducts to be connected with the supplying ducts of the reaction section are provided along with openings for allowing all the distribution ducts to be connected with the return ducts of the reaction section.