| 摘要 |
<p>A process for producing liquid and/or gaseous products from gaseous reactants comprises feeding (14) them, at a low level, into a slurry bed (40) of particles suspended in a liquid, to react as they rise therethrough to form the products, the reactants and any gaseous product assisting in maintaining the suspension. The liquid product forms, together with the suspension liquid, the liquid phase of the bed. Any gaseous product and unreacted reactants rise from the bed into a head space (44). Slurry passes downwardly in the bed through downcomers (22, 32) located respectively in first and second downcomer regions (20, 30) of the bed, thereby redistributing solid particles within the bed. The second downcomer region is spaced vertically with respect to the first downcomer region. Any gaseous product and unreacted reactants are withdrawn (16) from the head space (44) and liquid phase is withdrawn (18) from the bed. Preferably a Fischer-Tropsch synthesis takes place with the gaseous reactants being in the form of a synthesis gas stream comprising mainly carbon monoxide and hydrogen.</p> |
