| 摘要 |
A flow distribution system for the plenum chamber (12) of a gas-liquid- solids fluidised bed reactor includes a downwardly directed conduit (10) and a flow distributor device such as a baffled nozzle (16) attached to the inner end of the conduit, the nozzle containing at least two parallel baffle plates for mixing and radial flow dispersion of gas-liquid materials in the lower portion of the plenum (12); the initially downward flow is then deflected generally upwardly by the curved lower head of the reactor plenum chamber and passes uniformly upwardly through a flow distribution grid (18) into the fluidised bed (20). A sparger (40) can be provided in the plenum above the flow distributor device for feeding additional gas-liquid mixture into the reactor. In an alternative embodiment, the flow distribution system includes a conical- shaped flow deflector device (46) having its base rigidly attached to the plenum lower wall and having its apex aligned with the conduit. <IMAGE> |
