| 摘要 |
<p>A plant (10) for producing hydrogen from a feed gas comprising short chain hydrocarbons, the plant comprising reactor means (14) defining channels for treating the feed gas in three successive stages, the channels for treating the feed gas in each case being adjacent to respective heat transfer channels, and the successive treatment stages being as follows: (a) pre-heating the feed gas (16b); (b) subjecting a mixture of steam and the heated feed gas to reforming (18b) in the presence of a reforming catalyst, while providing heat from adjacent channels (18a) in which catalytic combustion occurs; and (c) subjecting the gases produced by reforming to the water gas shift reaction (20b) in the presence of a shift catalyst, whilst removing heat into adjacent channels (20a) to generate steam. Preferably the reactor means is a single integrated reactor (14) in which all three of the successive treatment stages (16, 18, 20) occur, so that the heat transfers between the various fluids are also integrated. Such a reactor may be formed by a stack of plates between which the treatment channels and heat transfer channels are defined alternately in the stack.</p> |
