Fremgangsmåde til afköling af en exotermisk reaktionszone og reaktorenhed

摘要

Process for cooling an exothermic reaction zone (5) by introducing a stream of water (3) and a hydrocarbon-containing stream (6) into a plurality of humidifying tubes (4) extending through a catalytic exothermic reaction zone (5) of a catalytic fixed bed with solid catalyst, passing the stream of water in a falling film along the inner circumference of the humidifying tubes (4), and humidifying the hydrocarbon-containing stream with water in the humidifying tubes in indirect heat exchange with the exothermic reaction zone.