초록 ▼

While a fuel cell operates, a fuel cell system allows a carbon dioxide rich gas discharged from an anode of the fuel cell through consumption of hydrogen to be fed into a carbon dioxide recovery element of a carbon dioxide recovery unit. The carbon dioxide recovery element is packed with a zeolite,

While a fuel cell operates, a fuel cell system allows a carbon dioxide rich gas discharged from an anode of the fuel cell through consumption of hydrogen to be fed into a carbon dioxide recovery element of a carbon dioxide recovery unit. The carbon dioxide recovery element is packed with a zeolite, which absorbs and retains a polar substance CO2. When the fuel cell stops operation, a recovery element heating burner receives a supply of the hydrogen-containing carbon dioxide rich gas fed via a first exhaust conduit of the fuel cell and a supply of methanol from a methanol reservoir, and combusts hydrogen contained in the carbon dioxide rich gas as well as the supply of methanol. This keeps the zeolite packed in the carbon dioxide recovery element under a heating condition, which allows carbon dioxide previously absorbed and retained to be released from the zeolite. A reforming reaction unit of a methanol reformer and the fuel cell are filled with the released carbon dioxide fed therein.

대표청구항 ▼

A reformer comprising reformer means for reforming hydrocarbon to generate a hydrogen rich gas; gas feeding means for feeding a carbon dioxide-containing gas; carbon dioxide absorption means for absorbing and retaining carbon dioxide in said carbon dioxide-containing gas under a first condition and

A reformer comprising reformer means for reforming hydrocarbon to generate a hydrogen rich gas; gas feeding means for feeding a carbon dioxide-containing gas; carbon dioxide absorption means for absorbing and retaining carbon dioxide in said carbon dioxide-containing gas under a first condition and releasing the absorbed and retained carbon dioxide under a second condition; carbon dioxide release means for keeping said carbon dioxide absorption means under said second condition to release the absorbed and retained carbon dioxide from said carbon dioxide absorption means; and replacement means for supplying the carbon dioxide released by said carbon dioxide release means to said reformer means to replace said hydrocarbon with said carbon dioxide.