Patent ID: 9039986
Filing Date: 2015-05-26
Classification: B01J,F28D

Abstract:
1. A steam cooled chemical reactor comprising: a vertical vessel containing a catalytic bed, and a plate heat exchanger comprising a plurality of plated having internal passages or channels embedded in said catalytic bed, said heat exchanger being arranged to cool the catalytic bed by evaporation of a cooling water flow, and comprising a water inlet and a steam outlet, and a piping to distribute the water and collect the steam flow to/from the internal passages or channels of the plates of the heat exchanger, wherein said water inlet and steam outlet are located underneath the heat exchanger, and said piping and the heat exchange plates are arranged to provide a path for the cooling flow comprising a first ascending path from bottom to top of the catalytic bed, and a second descending path from top to the bottom of catalytic bed, a plurality of evaporation channels providing said second descending path, and one or more water upcomer(s) providing said first ascending path, wherein the total cross section of the evaporation channels of each plate is greater than the total cross section of the one or more water upcomer(s) of the same plate, and wherein the number of evaporation channels of each plate is greater than the number of the water upcomer(s) of the same plate.