VORRICHTUNG ZUR DURCHFUEHRUNG EXOTHERMER, KATALYTISCHER GASREAKTIONEN FUER DIE AMMONIAK- ODER METHANOL-SYNTHESE

摘要

In an apparatus for carrying out exothermic catalytic gas reactions for ammonia or methanol synthesis, essentially consisting of a high- pressure shell and an insert with an upper closing cover, the insert containing at least two superposed catalyst vessels (6, 10) in an annular cylindrical arrangement with a gas-permeable inner wall and outer wall for radial gas flow from the outside inwards and two gas/gas heat exchangers (5, 9) of shell-and-tube construction centrally within the first and second catalyst vessel, a solution is to be provided which makes it possible to dispense with a central guide tube. This is achieved in such a way that the first heat exchanger (5) is connected on the tube side to the inner annular space (11) of the second catalyst bed (6) and to the outlet branch (15) for the reaction gas, that the first heat exchanger (5) for the fresh gas to be heated is connected on the shell side to the lower free space (4) and to the connection chamber (7), and that the tube plate (13) has orifices (12) in the outer region as a connection between the annular space (11) and the upper tube plate chamber (14).