Apparatus and method for regulating flow through a pumpbox

摘要

A pumpbox apparatus includes a reservoir volume having a first inlet for receiving a feedstock stream and a second inlet for receiving a water stream, the reservoir volume being in communication with a discharge outlet disposed to discharge accumulated liquid from the reservoir volume. The reservoir volume is operable to accumulate the feedstock stream and the water stream in the reservoir volume while withdrawing a discharge stream through the discharge outlet to cause a flow of liquid through the pumpbox. The first inlet defines a first flow velocity region between the first inlet and the second inlet and a second flow velocity region between the second inlet and the discharge outlet. The first flow velocity is lower than the second flow velocity to facilitate flotation of a low specific gravity portion of the feedstock through the first region toward an upper surface of the liquid accumulated in the reservoir volume.

主权项

1. A pumpbox apparatus for processing a feedstock stream, the apparatus comprising:
a reservoir having a first inlet for receiving the feedstock stream and a second inlet for receiving a water stream, the reservoir being in communication with a discharge outlet disposed to discharge accumulated liquid from the reservoir, the reservoir being operable to accumulate the feedstock stream and the water stream to a first liquid level in the reservoir while withdrawing a discharge stream through the discharge outlet to cause a flow of liquid through the pumpbox, the first inlet being located above the second inlet and defining a first flow region between the first inlet and the second inlet, the second inlet being located above the discharge outlet and defining a second flow region between the second inlet and the discharge outlet, a first flow velocity in the first flow region being lower than a second flow velocity in the second flow region to facilitate flotation of a low specific gravity portion of the feedstock through the first flow region toward an upper surface of the liquid accumulated in the reservoir; and a collector for collecting at least a portion of the low specific gravity portion from an upper surface of the accumulated volume when the first liquid level is above the first inlet.