| 摘要 |
PROBLEM TO BE SOLVED: To provide a reformer hardly causing powdering and abrasion of a catalyst, having a large heat transfer area based on the amount of the catalyst, made without using an expensive material, capable of heating the catalyst to a prescribed temperature, small in pressure drop caused by a catalytic layer, and thereby capable of enabling the reformer to be extremely compacted and the cost to be reduced. SOLUTION: The catalytic layer 16 is produced by arranging plural reforming catalysts 11 having cylindrical shapes and through-holes in the axis directions, in series in the axis direction and an outer tube 12 has an inner diameter slightly larger than the outer diameter of the catalyst layer 16. The outer tube 12 is fixed at one terminal 12a, and extended in the axis direction so as to surround the catalytic layer 16 and so as to be longer than the catalytic layer, and closed at the other terminal 12b. The inner tube 14 has an outer diameter slightly smaller than that of the through-hole of the catalytic layer 16, is fixed at one terminal 14a, extended in the through-hole in the axis direction, and opened at the other terminal 14b present at this side of the other terminal 12b of the outer tube 12.
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