| 摘要 |
A multi-tubular steam reformer is disclosed, which comprises a steam reforming zone heated by an external heat source and contains a plurality of parallel steam reforming tubes (each comprising a gas supply inlet); a fixed bed of steam reforming catalyst; and a solid, inert insert having an upstream end and a downstream end and is placed in the tube downstream of the gas supply inlet and upstream of the catalyst bed The insert has a tortuous free fluid flow path and the upstream end of the catalyst bed is adjacent to the downstream end of the insert. The ratio of the length of the insert and the length of the catalyst bed is in the range of from 0.05 to 0.5. The invention further relates to a process for catalytic steam reforming of a hydrocarbonaceous feedstock comprising an oxygenated hydrocarbonaceous compound in such multi-tubular steam reformer. |
