Method of preventing metal dusting in a gas heated reforming apparatus

Abstract

The specification describes a gas heated reformer apparatus comprising: one or more tubes containing a steam reforming catalyst; and a shell surrounding said tube(s) and together with the tube(s) defining a shell side; wherein the shell comprises an inlet and outlet for a heat exchange medium; wherein the shell side is provided with a water gas shift catalyst located at one or more areas of the shell side where during use the heat exchange medium in contact with the shell side has a temperature of 500-750° C. Also described is a plant for producing hydrogen, ammonia or methanol comprising the gas heated reformer. A water gas shift catalyst can be retrofitted to an existing gas heater reformer.

Dependencies are inferred from the claim text.