Bloom Energy Corporation
FUEL CELL SYSTEM INCLUDING HIGH-TEMPERATURE DESULFURIZATION SUBSYSTEM AND METHOD OF OPERATING THE SAME

Abstract:

A fuel cell system includes a hot box, a stack of fuel cells disposed in the hot box, and a desulfurization subsystem. The desulfurization subsystem may include a sulfur adsorption reactor containing a metal oxide, such as ZnO, configured to adsorb sulfur species from fuel, a first fuel conduit configured to provide fuel to the reactor, and a second fuel conduit configured to receive fuel from the reactor. The desulfurization subsystem may be configured to heat the reactor to an operating temperature ranging from about 200.degree. C. to about 450.degree. C., using heat generated in the hot box.