摘要:
A methanation catalyst, a carbon monoxide removing system, a fuel processor, and a fuel cell including the same, and more particularly a non-supported methanation catalyst including the catalytically active non-precious metal particles and the metal oxide particles, and a carbon monoxide removing system, a fuel processor, and a fuel cell including the same. The methanation catalyst has high selectivity for the methanation of carbon monoxide instead of the methanation of carbon dioxide and the reverse water gas shift reaction of carbon dioxide, which are side reactions of the methanation of carbon monoxide, maintains high concentration of generated hydrogen as small amounts of hydrogen and carbon dioxide are consumed, and effectively removes carbon monoxide at low operating temperatures of 200° C. or less.
摘要:
A non-pyrophoric shift reaction catalyst includes an oxide carrier impregnated with platinum (Pt) and cerium (Ce). The non-pyrophoric shift reaction catalyst may be prepared by uniformly mixing a platinum precursor, a cerium precursor, and an oxide carrier in a dispersing medium to obtain a mixture; drying the mixture; and calcining the dried mixture. The shift reaction catalyst having a non-pyrophoric property has an excellent reaction activity even at a low temperature and can efficiently remove carbon monoxide in fuel.
摘要:
A fuel processor having a CO removal unit including an apparatus for warming a CO shifter, is provided. A method of using the fuel processor is also provided. The fuel processor includes a reformer that extracts hydrogen gas from a raw fuel by reacting the raw fuel with water. A burner heats up the reformer to a temperature suitable for extracting the hydrogen gas. A CO shifter removes CO produced during the extraction reaction from the hydrogen gas, and a medium path line in which a heat exchange medium disposed therein absorbs heat from the reformer and passes the heat to the CO shifter. A fuel processor having the above structure can greatly reduce the time required to increases the temperature of the CO shifter to an appropriate operating temperature at an early stage of start up, since a rapid heating of the CO shifter is possible using the heat exchange of steam.
摘要:
A desulfurizer for fuel gas for a fuel cell includes: a first adsorption tank including an adsorber having selective adsorption capacity for a thiophene-based compound and a second adsorption tank including an adsorber having selective adsorption capacity for a mercaptan-based compound. The desulfurizer uses separate adsorbers having selective adsorption capacity for a thiophene-based compound and a mercaptan-based compound, in multiple stages to perform a more efficient and economical desulfurizing of a fuel gas to remove various sulfur compounds, especially thiophene-based compounds and mercaptan-based compounds compared to a desulfurizer using a single adsorber.
摘要:
A hydrogen generator having double burners and a method of operating the samewhere the hydrogen generator includes a housing, a barrier wall to divide a space in the housing into a first chamber and a second chamber, a fuel reformer installed in the first chamber, a first burner installed in the first chamber to heat a fuel reformer, a shift reactor installed in the second chamber, a second burner mounted in the barrier wall to heat the shift reactor, and a first igniter and a second igniter respectively ignite the first burner and the second burner.
摘要:
A fuel processor having a CO removal unit including an apparatus for warming a CO shifter, is provided. A method of using the fuel processor is also provided. The fuel processor includes a reformer that extracts hydrogen gas from a raw fuel by reacting the raw fuel with water. A burner heats up the reformer to a temperature suitable for extracting the hydrogen gas. A CO shifter removes CO produced during the extraction reaction from the hydrogen gas, and a medium path line in which a heat exchange medium disposed therein absorbs heat from the reformer and passes the heat to the CO shifter. A fuel processor having the above structure can greatly reduce the time required to increases the temperature of the CO shifter to an appropriate operating temperature at an early stage of start up, since a rapid heating of the CO shifter is possible using the heat exchange of steam.
摘要:
A hydrogen generator having double burners and a method of operating the samewhere the hydrogen generator includes a housing, a barrier wall to divide a space in the housing into a first chamber and a second chamber, a fuel reformer installed in the first chamber, a first burner installed in the first chamber to heat a fuel reformer, a shift reactor installed in the second chamber, a second burner mounted in the barrier wall to heat the shift reactor, and a first igniter and a second igniter respectively ignite the first burner and the second burner.
摘要:
A fuel cell system that includes a liquid fuel tank containing a non-sulfur-containing liquid fuel and water; a reformer generating a hydrogen-rich gas from the liquid fuel and water received from the liquid fuel tank; a reformer burner heating the reformer by burning a gaseous fuel received from a gaseous fuel tank, and a fuel cell stack generating electrical energy from the hydrogen-rich gas received from the reformer. The liquid fuel tank is connected to the gaseous fuel tank, and the liquid fuel mixed with water is supplied to the reformer by the pressure of the gaseous fuel tank.
摘要:
A non-pyrophoric shift reaction catalyst includes an oxide carrier impregnated with platinum (Pt) and cerium (Ce). The non-pyrophoric shift reaction catalyst may be prepared by uniformly mixing a platinum precursor, a cerium precursor, and an oxide carrier in a dispersing medium to obtain a mixture; drying the mixture; and calcining the dried mixture. The shift reaction catalyst having a non-pyrophoric property has an excellent reaction activity even at a low temperature and can efficiently remove carbon monoxide in fuel.
摘要:
A fuel processor having an improved structure to rapidly increase a temperature of a CO removing unit to an operation temperature, and a method of operating the fuel processor, includes a reformer that produces hydrogen gas by reacting a fuel and water; a CO removing unit that removes CO from the hydrogen produced in the reformer. The CO removing unit comprises a CO shift reactor including a first catalyst that catalyzes a reaction between steam and CO and a second catalyst that catalyzes a reaction between oxygen and CO and between hydrogen and oxygen, and a CO remover including a third catalyst that catalyzes a reaction between oxygen and CO; and an air supply unit that supplies air to the CO shift reactor and the CO remover. The use of the fuel processor can greatly reduce a warming up time required to reach a normal operation of the fuel processor since the CO shift reactor can be rapidly heated using a direct reaction between oxygen and CO and between oxygen and hydrogen during an initial start up operation.