APPARATUS FOR THROTTLING A DRY PULVERIZED SOLID MATERIAL PUMP

摘要

A kinetic extruder for feeding pulverized coal from an atmospheric pressure hopper to an elevated pressure reactor vessel. In order to overcome the disadvantage of not being able to vary the feed rate of the pulverized coal in an efficient manner apparatus capable of controlling and adjusting the amount of material fed from a low pressure container into a pressurized container is employed. The apparatus comprises a rotor (2) with a plurality of generally-extending sprues (16), a hub (6) connected to a drive (8), throttleable control orifices (28) and a material supply (18) extending into the hub for feeding pulverized material thereto. Apparatus (26, 32) for controlling the gas pressure at the entrance to the control orifice (28) is connected to a pressure regulator and control system (36).