Patent ID: 7854906

Claim:
A reactor for carrying out a reaction between at least a first and a second fluid starting material over a catalyst bed with premixing of the fluid starting materials into a reaction mixture before introduction into the catalyst bed within a delay time of less than 150 ms in a mixing-in device, wherein the mixing-in device comprises, arranged essentially transverse to an inflow direction of a first fluid starting material stream: two or three rows arranged behind one another of tubes which comprise turbulence generators on an outside surface of the tubes and constrict a flow cross section for the first fluid starting material stream to from ½ to 1/10, with a second fluid starting material stream being passed through interiors of the tubes and injected via openings in the tubes into the first fluid starting material stream; an upstream perforated plate upstream of the tubes, comprising openings; and a downstream perforated plate downstream of the tubes, comprising openings.