Radiating wall catalytic reactor and process for carrying out a chemical reaction in this reactor

摘要

Disclosed are a radiating wall catalytic reactor for providing heat from the inside wall surface 8 of a reaction chamber 1 by radiation 16 to support an overall endothermic gas phase chemical reaction taking place in the reaction chamber 1, and a process for carrying out a chemical reaction in the reactor. The reaction chamber 1 is provided with an entrance port 2 for introducing a gaseous reactant(s) in a continuous manner into the chamber 1 and an exit port 3 to enable the gaseous product(s) to leave the chamber 1 in a continuous manner. The reaction chamber 1 includes a plurality of catalyst segments (A)5, which has one void segment (B)6 on either side of it; and the reaction chamber 1 is made of a material(s) that is (are) suitable to resist a temperature of 700° C. or more.

主权项

1. A radiating wall catalytic reactor for providing heat from the inside wall surface (8) of a reaction chamber (1) by radiation (16) to support an overall endothermic gas phase chemical reaction taking place in the reaction chamber (1),
comprising a reaction chamber (1) with an entrance port (2) for the introduction of a gaseous reactants in a continuous manner into the reaction chamber (1) and an exit port (3) to enable a gaseous product to leave the reaction chamber (1) in a continuous manner, said reaction chamber (1) comprising a plurality of catalyst segments (A)(5) containing a catalyst material (4), and a plurality of void segments (B)(6), wherein an individual catalyst segment (A)(5) and an individual void segment (B)(6) are alternatively positioned; wherein the reaction chamber is adapted such that a gaseous stream flows through and comes into contact with the catalyst material (4); and wherein heat is radiated from the inside wall surface (8) in the void segments (B)(6) to a catalyst segment surface (9) constituting an interface between the catalyst segments (A)(5) and the void segments (B)(6); and a heating means for heating the reaction chamber (1) such that an outside wall surface (15) of the reaction chamber (1) is at a higher temperature than the inside wall surface (8) of the reaction chamber (1), wherein the reaction chamber is adapted such that a heat flux by radiation through the inside wall surface (8) occurs in one or more of the catalyst segments (A)(5) in the range of 15 to 100 kW/m2; wherein the plurality of the catalyst segments (A)(5) comprise a first catalyst segment (A)(5)(i) and a neighboring second catalyst segment (A)(5)(ii), and the gaseous reactant flows through the first catalyst segment (A)(5)(i), the void segment (B)(6), and the neighboring second catalyst segment A(5)(ii); and wherein one of more of the void segments (B)(6) contain a supporting member (10); said reaction chamber (1) being made of a material that is suitable to resist a temperature of 700° C. or more; and wherein the catalyst segments (A)(5) contain or consist of a porous metal foam structure which supports a catalyst or itself acts as a catalyst.