NOVELTY - A fuel processor consists of heater containing burner, reforming portion provided around heater, converting portion (11) provided around heater mixing portion (16) provided around the heater, carbon monoxide removing portion (14), and partition plate (200). The reforming portion generates hydrogen containing gas composed of carbon monoxide and water. The converting portion generates hydrogen containing gas comprising low-concentration carbon monoxide by reacting carbon monoxide and water in the hydrogen containing gas generated in the reforming portion.    USE - Fuel processor is used for preparing fuel gas for fuel cell power generator, for fuel cells in home cogeneration system and for manufacturing hydrogen-rich reformed gas.    ADVANTAGE - The fuel processor is prepared by simple and economical method, and provides mixing passage having excellent mixing capacity with simple structure without increasing pressure loss. The fuel processor exhibits constant carbon monoxide removal capability over long continuous operation even if load fluctuates.    DETAILED DESCRIPTION - A fuel processor consists of heater containing burner, reforming portion provided around heater, converting portion provided around heater mixing portion provided around the heater, carbon monoxide removing portion, and partition plates. The reforming portion generates hydrogen containing gas composed of carbon monoxide and water. The converting portion generates hydrogen containing gas comprising low-concentration carbon monoxide by reacting carbon monoxide and water in the hydrogen containing gas generated in the reforming portion. The mixing portion mixes air supplied from an air inlet portion (16a) and hydrogen containing gas generated in the converting portion. The carbon monoxide removing portion in which oxygen, carbon monoxide in the gas supplied from the mixing portion, and carbon monoxide removal catalyst (13) are reacted, to generate hydrogen containing gas hardly containing carbon monoxide. The partition plates partially comprises tilted portion, for dividing passage of mixing portion.    DESCRIPTION OF DRAWING(S) - The drawing shows longitudinal sectional view of mixing portion of fuel processor.    Converting portion (11)    Carbon monoxide removal catalyst (13)    Carbon monoxide removing portion (14)    Mixing portion (16)    Air inlet portion (16a)    Partition plate (200)