TECHNOLOGY FOCUS - CHEMICAL ENGINEERING - Preferred Process: The first combustion effluent stream comprises combustion effluent produced from the combustion of a fuel gas stream and/or a portion of the anode waste gas stream and a portion of the anode waste gas stream is combusted with the cooled first combustion effluent stream. The first combustion effluent stream has an inlet temperature of 600-800degreesC. The inlet temperature of the first combustion effluent is equal to that of the second combustion effluent stream. The process further includes passing the first combustion effluent stream and the second combustion effluent stream to a flue gas heat exchange zone to provide indirect heat exchange between the first and second combustion effluent streams. The reforming zone is disposed in a first zone of a multiple zone heat exchanger in which the first combustion effluent stream is passed through a second zone of the multiple zone heat exchanger and the second combustion effluent stream is passed through a third zone of the multiple zone heat exchanger. The first zone is intimate thermal contact with the second and third zones of the multiple zone heat exchanger. The reformate stream is passed to an anode side of the fuel cell to generate electric power and recovering the anode waste gas stream. The anode waste gas stream is combusted with an excess air stream at an excess air rate in a first combustion zone to provide the first combustion effluent stream at a first combustion temperature and the cooled first combustion effluent is recombusted with a portion of the anode waste gas stream in a second combustion zone to provide a second combustion effluent stream in a second combustion temperature, and the process is controlled by measuring the first combustion temperature and adjusting the excess air rate to maintain a uniform first combustion temperature.Preferred Materials: The feedstock comprises a hydrocarbon or an oxygenate that passes with the stream at reforming conditions to a reforming zone containing a steam reforming catalyst to produce the reformate stream comprising hydrogen; the cooled first combustion effluent stream is reheated by combustion with an auxiliary fuel stream to provide the second combustion effluent stream at a second combustion temperature; and essentially all of the anode waste gas stream withdrawn from the fuel cell is combusted with an excess air stream to provide the first combustion effluent stream at a first combustion effluent temperature equal to the second combustion temperature.