| 摘要 |
AN APPARATUS FOR STEAM REFORMING OF HYDROCARBONS IS DESCRIBED COMPRISING A HEAT EXCHANGE REFORMER HAVING DISPOSED WITHIN@ PLURALITY OF VERTICAL CATALYST-FILLED TUBES, THROUGH WHICH A GAS MIXTURE COMPRISING HYDROCARBON AND STEAM MAY BE PASSED. AND TO WHICH HEAT MAY BE TRANSFERRED BY MEANS OF A HEAT EXCHANGE MEDIUM FLOWING AROUND THE EXTERNAL TUBE SURFACES, WHEREIN HEAT EXCHANGE ADAPTING MEANS ARE PROVIDED WITHIN THE REFORMER SO THAT THE TUBES HAVE A ZONE OF LOWER HEAT EXCHANGE EXTENDING FROM THE BOTTOM OF THE CATALYST UP TO 25% OF THE CATALYST DEPTH WITH NO HEAT EXCHANGE ENHANCEMENT MEANS PROVIDED IN SAID ZONE. A PROCESS FOR STEAM REFORMING OF HYDROCARBONS USING SAID APPARATUS IS ALSO DESCRIBED. |
