NOVELTY - The reformer has a thermally insulated housing (12) enclosing multiple catalyst tubes (14) loaded with annular catalyst beds (72). Each catalyst tube encloses a central regenerator tube (50) which includes an inwardly tapered frustoconical portion (H2) for holding excessive amount of compacted catalyst in catalyst tubes and for providing a process gas flow channel minimizing catalyst bed fluidization.    USE - For producing hydrogen enriched fuel from raw fuel such as natural gas for fuel cell power plants.    ADVANTAGE - The provision of regenerator tubes with inwardly tapered fuel to conical portion allows for holding of excessive amount of catalyst and minimizing fluidization in catalyst bed thus preventing excessive setting and crushing of catalyst leading to loss in height of catalyst bed. The catalyst is catalyst bed is compacted to maximize reformer performance. The tapered portions of regenerator tube provides a process gas flow channel, that reduces the fluidization of catalyst bed. The manifolds formed by plates conducting loads of catalyst tube assembly and regenerator tube assembly to side wall of housing provides an efficient supporting structure that keeps the tube bundles aligned and distributes loading forces evenly.    DETAILED DESCRIPTION - The tapered portion of regenerator tube is covered by a perforated plate to allow gas to flow from catalyst bed to regenerator tube. The reformer housing includes a manifold for receiving process gas, formed between the bottom of housing and a primary plate conducting the weight of regenerator tube assembly connected to it to the side wall. A manifold receiving raw fuel gas opening into the catalyst beds is formed between the primary plate and a secondary plate conducting the weight of catalyst tube assembly to the side wall of housing.    DESCRIPTION OF DRAWING(S) - The figure shows the fragmented cross-sectional view of reformer.    Housing (12)    Catalyst tubes (14)    Regenerator tube (50)    Catalyst bed (72)    Frustoconical portion of regenerator tube (H2).