Patent ID: 8226736

Claim:
A fuel processor to purify a fuel using an adsorbent, the fuel processor comprising: a desulfurizer comprising a housing having an inlet and an outlet and having the adsorbent disposed in the housing; a first sulfur sensor configured to detect at least one of an electrical, a physical, and a chemical characteristic variation of the adsorbent in a first region of the adsorbent and to determine a concentration of sulfur adsorbed on the adsorbent in the first region of the adsorbent, wherein the first region is adjacent to the inlet; and a second sulfur sensor configured to detect at least one of an electrical, a physical, and a chemical characteristic variation of the adsorbent in a second region of the adsorbent and to determine a concentration of sulfur adsorbed on the adsorbent in the second region of the adsorbent, wherein the second region is adjacent to the outlet, wherein the first sulfur sensor is installed in the first region of the adsorbent and the second sulfur sensor is installed in the second region of the adsorbent.