| 摘要 |
PURPOSE:To prevent the deformation failure of inner pipe by heating the inner pipe with the high temp. gas flowing in the inner pipe and with packing particles, and absorbing the thermal stress due to the volumetric increase caused by thermal expansion of the packing particles with conical tube bodies. CONSTITUTION:The inner pipe 31 flowing high temp. gas 41 in the inner part, an outer pipe 32 disposed concentrically to the outer peripheral side of the inner pipe, and an internal pipe 33 disposed concentrically between the inner pipe and the outer pipe are provided, and a 1st annular part 34 which is formed between the inner pipe and the internal pipe and a raw material 9 is introduced in, a catalyst layer 35 formed with catalyst 36 packed in the annular part 34, and a 2nd annular part 37 which is formed between the internal pipe and the outer pipe and the gas generated from the raw material 9 passed through the catalyst layer 35 is to pass through, are formed. Moreover, an end cap 38 which connects the annular part 34 with the annular part 37 and introduces the gas flowing out of the catalyst layer 35 into the annular part 37, the conical tube bodies 47 having flange part at the bottom surface, and a packing particle layer 48 formed by packing the packing particles 49 so as to surround the conical tube bodies in the inner pipe, are provided. |
