The expected increase in hydrogen demand results in the development of propane steam reforming. In the furnace, two main reactions take place, the steam reforming and the WGS:

C3H8ðgÞ 13H2OðgÞ-3COðgÞ 17H2ðgÞ

COðgÞ 1H2OðgÞ-CO2ðgÞ 1H2ðgÞ

The reforming reaction takes place over Ni catalyst in the tubes of the furnace. The feed consists of a mixture of steam and propane with a molar ratio of 5:1 at 125C. The products leave the furnace at 800C.

Assume complete propane conversion.

The reaction is endothermic, and thus energy must be provided. A hot flue gas with a composition of 22% CO2 and the rest nitrogen is fed at 1400C and 1 atm, and exits at 900C. The flue gas is further used to produce steam by cooling it down to 250C. Water is fed at 25C and the stream is produced at 125C and 1 atm. Determine the molar composition of the gas product and the flue gas required to produce the steam required by the reforming stage.