Catalytic reaction chamber, e.g. for steam reforming, includes system, preferably passage reduction tube, in catalytic tube to promote heat exchange between reactants and product gas

摘要

In a chamber for carrying out a catalytic raction, having a catalytic tube (CT) (10) with an internal product gas evacuation tube (ET) (12), catalyst (13) between the ET and the CT internal surface, reactant and catalyst supplies (15, 16) in the upper part of the chamber and a CT heater in the lower part of the chamber, heat exchange between reactants and product gas is promoted in the upper part of the CT (above the catalyst). A chamber for carrying out a chemical reaction in presence of catalyst comprises at least one catalytic tube (CT) (10) containing an internal product gas evacuation tube (ET) (12) leading to the exterior; catalyst (13) located between the evacuation tube and the CT internal surface; a reactant supply (15) and catalyst supply (16) in the upper part of the chamber; and a CT heater in the lower part of the chamber. The novel feature is that the upper part of the CT (above the catalyst) contains a system promoting heat exchange between the reactants and the product gas. An independent claim is included for a steam reforming process carried out using a reactor-heat exchanger as above.