A hydrogen generation apparatus 200 includes: an evaporating part 7; a reforming reaction part 9A connected to the downstream side of the evaporating part; a carbon monoxide reducing part 20 provided downstream from the reforming reaction part; and a gas guiding part 21 disposed between the reformin
A hydrogen generation apparatus 200 includes: an evaporating part 7; a reforming reaction part 9A connected to the downstream side of the evaporating part; a carbon monoxide reducing part 20 provided downstream from the reforming reaction part; and a gas guiding part 21 disposed between the reforming reaction part and the carbon monoxide reducing part and configured to guide a gas that has passed through the reforming reaction part to the carbon monoxide reducing part. The evaporating part and the carbon monoxide reducing part are arranged to be adjacent to each other such that, at least, a part of the evaporating part and a part of the carbon monoxide reducing part are heat exchangeable with each other. The evaporating part is configured such that a heat exchange amount at a portion of the evaporating part, the portion corresponding to the carbon monoxide reducing part, is less than a heat exchange amount at a portion of the evaporating part, the portion not corresponding to the carbon monoxide reducing part.
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1. A hydrogen generation apparatus comprising: an evaporating part configured to evaporate water of a fluid that contains a raw material gas and the water to transform the water into steam, the raw material gas and the water being raw materials for hydrogen;a reforming reaction part connected to a d
1. A hydrogen generation apparatus comprising: an evaporating part configured to evaporate water of a fluid that contains a raw material gas and the water to transform the water into steam, the raw material gas and the water being raw materials for hydrogen;a reforming reaction part connected to a downstream side of the evaporating part and configured to be supplied from the evaporating part with a fluid containing the raw material gas and the steam, the reforming reaction part including a reforming reaction catalyst which causes a reforming reaction to progress between the raw material gas and the steam contained in the fluid;a carbon monoxide reducing part provided downstream from the reforming reaction part and including at least one of a shift reactor and a selective oxidation reactor, the shift reactor including a shift reaction catalyst which causes a shift reaction to progress between carbon monoxide and water, the selective oxidation reactor causing a selective oxidation reaction to progress between carbon monoxide and oxygen;a burner configured to heat at least the reforming reaction part and the carbon monoxide reducing part by performing combustion; anda gas guiding part disposed between the reforming reaction part and the carbon monoxide reducing part and configured to guide a gas that has passed through the reforming reaction part to the carbon monoxide reducing part by causing the gas to turn around, whereinthe evaporating part and the carbon monoxide reducing part are arranged to be adjacent to each other such that, at least, a part of the evaporating part and a part of the carbon monoxide reducing part are heat exchangeable with each other, andthe evaporating part includes: a first evaporating portion which corresponds to the carbon monoxide reducing part; and a second evaporating portion which does not correspond to the carbon monoxide reducing part and which is formed upstream from the first evaporating portion, the evaporating part being configured such that a heat exchange amount between the first evaporating portion and water su lied from the water supply unit is less than a heat exchange amount between the second evaporating portion and the water supplied from the water supply unit. 2. The hydrogen generation apparatus according to claim 1, comprising: a first cylinder with a first bottom face formed at one end of the first cylinder;a second cylinder formed at an outer side of the first cylinder;a third cylinder with a third bottom face, the third cylinder being formed at an outer side of the second cylinder;a raw material supply unit configured to supply the raw material gas to first space which is space formed between a side wall of the first cylinder and a side wall of the second cylinder;the water supply unit configured to supply the water to the first space;the burner, formed within the first cylinder, configured to be supplied with a combustible gas and combustion air and to perform combustion; anda flue gas passage, formed at an inner side of the first cylinder, through which a flue gas from the burner flows, whereinthe evaporating part is formed in the first space, and is configured to transform the water into steam by absorbing heat from the flue gas,the reforming reaction part is disposed in the first space at a position downstream from the evaporating part,the carbon monoxide reducing part is disposed in second space formed between the side wall of the second cylinder and a side wall of the third cylinder,the gas guiding part is configured to cause the reformed gas from the first space to turn around at a position between the first bottom face and the third bottom face, and to supply the reformed gas to the second space, andthe first evaporating portion is formed between the carbon monoxide reducing part and the first cylinder. 3. The hydrogen generation apparatus according to claim 2, wherein the evaporating part includes a water passage which is formed by partitioning by a passage component, anda distance between adjacent portions of the passage component is greater in the first evaporating portion than in other portions different from the first evaporating portion. 4. The hydrogen generation apparatus according to claim 2, wherein the evaporating part includes the first evaporating portion, the second evaporating portion, and a third evaporating portion which does not correspond to the carbon monoxide reducing part and which is formed downstream from the first evaporating portion, andthe evaporating part is configured such that the heat exchange amount decreases in the following order: the heat exchange amount at the second evaporating portion; the heat exchange amount at the third evaporating portion; and the heat exchange amount at the first evaporating portion. 5. The hydrogen generation apparatus according to claim 4, wherein the evaporating part includes a water passage which is formed by partitioning by a passage component, anda distance between adjacent portions of the passage component increases in the following order: the distance in the second evaporating portion; the distance in the third evaporating portion; and the distance in the first evaporating portion. 6. The hydrogen generation apparatus according to claim 2, wherein the carbon monoxide reducing part includes: a shift conversion catalyst layer formed at an upstream side of the carbon monoxide reducing part; anda selective oxidation catalyst layer formed at a downstream side of the carbon monoxide reducing part,the first evaporating portion includes: a fourth evaporating portion formed between the selective oxidation catalyst layer and the first cylinder;a sixth evaporating portion formed between the shift conversion catalyst layer and the first cylinder; anda fifth evaporating portion formed between the upstream evaporating portion and the downstream evaporating portion, andthe first evaporating portion is configured such that the heat exchange amount is less at the fourth evaporating portion and the sixth evaporating portion than at the fifth evaporating portion. 7. The hydrogen generation apparatus according to claim 6, the evaporating part includes a water passage which is formed by partitioning by a passage component, anda distance between adjacent portions of the passage component is greater in the fourth evaporating portion and the sixth evaporating portion than in the fifth evaporating portion. 8. The hydrogen generation apparatus according to claim 6, wherein the evaporating part includes the first evaporating portion, a second evaporating portion formed upstream from the first evaporating portion, and a third evaporating portion formed downstream from the first evaporating portion, andthe evaporating part is configured such that the heat exchange amount decreases in the following order: the heat exchange amount at the second evaporating portion; the heat exchange amount at the third evaporating portion; the heat exchange amount at the fifth evaporating portion; the heat exchange amount at the fourth evaporating portion; and the heat exchange amount at the sixth evaporating portion. 9. The hydrogen generation apparatus according to claim 2, wherein the evaporating part includes a water passage which is formed by partitioning by a passage component, andthe passage component is not disposed in the first evaporating portion. 10. The hydrogen generation apparatus according to claim 3, wherein the passage component is sandwiched between the first cylinder and the second cylinder, and is a spiral rod-like member. 11. The hydrogen generation apparatus according to claim 3, wherein the passage component is formed of a metal with a round cross section. 12. The hydrogen generation apparatus according to claim 2, wherein the evaporating part includes a water passage which is formed by partitioning by a passage component, andthe water passage has a greater cross section in the first evaporating portion than in other portions different from the first evaporating portion. 13. A fuel cell power generation system comprising: the hydrogen generation apparatus according to claim 1; and a fuel cell.
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이 특허에 인용된 특허 (2)
Clawson Lawrence G. ; Mitchell William L. ; Bentley Jeffrey M. ; Thijssen Johannes H. J., Method for converting hydrocarbon fuel into hydrogen gas and carbon dioxide.
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