Patent ID: 8398731

Claim:
A fuel treatment device, comprising: a reforming section that produces a hydrogen-rich gas containing carbon monoxide and water; a converting section that produces a hydrogen-rich gas containing a lower concentration of carbon monoxide by reacting the carbon monoxide and the water in the hydrogen-rich gas; a mixing channel that includes a gas supply region at an upstream side and a gas diffusion region at a downstream side, and produces a mixed gas by mixing the hydrogen-rich gas containing the lower concentration of the carbon monoxide with air containing oxygen; an air supplying section that is connected to an upstream end of the mixing channel and supplies air to the mixing channel; and a selective oxidizing section that is connected to a downstream end of the mixing channel and converting the mixed gas into a fuel gas by reacting the carbon monoxide and the oxygen in the mixed gas, wherein the mixing channel has two or more gas supply ports connecting the gas supply region with the converting section, and the gas diffusion region does not have the gas supply ports, the mixing channel includes one tube aligned in a radial direction of the fuel treatment device, and one channel aligned along a long axis of the fuel treatment device, the tube includes the gas supply region, the channel includes the gas diffusion region, and a length of the gas diffusion region is 0.5 to 2 times a length of the gas supply region.