Patent ID: 7695536

Claim:
An apparatus for manufacturing a fuel gas, comprising: a modifier for modifying a hydrogen-containing fuel to produce a modified gas; said modifier comprising: a modifying unit for modifying the hydrogen-containing fuel; a hydrogen-containing fuel supply mechanism for supplying said hydrogen-containing fuel, wherein said hydrogen-containing fuel supply mechanism has an injector, separate and distinct from a valve; an ejector for drawing the hydrogen-containing fuel from the hydrogen-containing fuel supply mechanism; and modifying air supply means for supplying modifying air and for setting the pressure of the modifying air delivered to the ejector such that the hydrogen-containing fuel is kept at a required flow rate independent of pressure fluctuations downstream of the ejector, wherein the ejector mixes said hydrogen-containing fuel drawn from said hydrogen-containing fuel supply mechanism and said modifying air delivered from said modifying air supply mechanism into a mixture, and supplies the mixture to said modifying unit, wherein the ejector draws the hydrogen-containing fuel from the hydrogen-containing fuel supply mechanism based upon a pressure at which the modifying air is delivered from the modifying air supply mechanism, and wherein the injector is disposed upstream of the ejector.