Network heat exchanger device, method and uses thereof

A chemical reactor for exothermic or endothermic processes comprising a stack of a network mixer plate for performing the reaction and a heat exchanger plate,

• wherein the network mixer plate comprises an array of chambers, each chamber being interconnected by at least two channels to at least two other chambers, for mixing and dividing one or more reaction fluids sequentially through said chambers,
• wherein the heat exchanger plate comprises a channel for the flow of a thermofluid,
• wherein the channel of the heat exchanger plate and the chambers of the network mixer plate are lined up to transfer heat between said chambers of the network mixer plate and said channel of the heat exchanger plate,
• wherein each chamber of the network mixer plate is a spherical or cylindrical chamber, comprising two or three channels and two or three apertures for connection to said channels,
• wherein the chambers diameters of the network mixer plate are between 1 mm and 50 mm and the channels width or diameters of the network mixer plate are between 0.25 mm and 10 mm, and
• wherein the Reynolds number of the flow of the network mixer is larger than 100.