| 摘要 |
PURPOSE:To prevent breakage of heat conducting packed particles and sleeve pipe by separating an annular space between a reforming pipe and a sleeve pipe with perforated plates in a direction of the axis of the reforming pipe to a size permitting rearrangement of heat conducting packed particles corresponding to the displacement due to thermal expansion and contraction of the sleeve pipe. CONSTITUTION:An outside pipe 2a and an inside pipe 2b of a reforming pipe 2 construct a concentric double pipe structure interposing a reforming catalyst bed 3, forming a return path 13 at the top 12 of one end thereof, allowing fed fuel gas introduced into the outside pipe 2a to be converted to reformed gas when it passes through a catalyst bed 3 and to be discharged through the inside pipe 2b. Further, in a vessel 1 of the reformed, plural numbers of pipes 2 protected by a sleeve pipe 19 are located so as to set the head 12 of the return path in a combustion chamber 7. And, annular spaces 20a-20d between the pipe 2 and the pipe 19 contg. the heat conducting packed particles 9 are separated by perforated plates 8a-8l to a size permitting rearrangement enabling the heat conducting packed particles 9 to absorb the displacement due to thermal expansion and contraction of the pipe 19. |
