Synthesis reactor

摘要

A reactor for catalytic gas reactions such as synthesis of methanol or ammonia comprises at least one cylindrical catalyst bed having a height not greater than half its over-all diameter and defined on its underside by a grid supported by a dished plate having peripheral mechanical connection to a downward extension of the bed wall. Preferably there are several such beds and an indirect heat exchanger upsteam of the downstream-most bed. The reactor is suitably 5-10 m in diameter and is especially for use at under 120 bar abs in an integrated process for producing methanol and ammonia.