Flow control device for solid particulate material

Liquid heaters and vaporizers – Miscellaneous

Patent

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Details

110245, 16510416, F22B 100

Patent

active

047096632

ABSTRACT:
A flow control device for solid particulate material such as recycled granular solids utilized in a fluidized bed combustion vessel includes a generally horizontal material feeder conduit having an outlet end in communication with the fluidized bed of the combustion vessel and a receiving end remote therefrom. An upstanding material collector conduit having a lower end in communication with a receiving end of the feeder conduit is provided and an upper end of the collector conduit is adapted to receive a flow of particulate solid material to be fed at a controlled flow rate into the combustion vessel. The upstanding collector conduit forms a standpipe for retaining a quantity of material to establish a pressure sealing head or column of material extending upwardly of the receiving end of the feeder conduit. A gas assisted flow initiator and controller extends into the feeder conduit for directing a flow of pressurized gas into the solid particulate material to fluidize the same for travel into the combustion vessel at a selected flow rate.

REFERENCES:
patent: 4085707 (1978-04-01), Moss
patent: 4457289 (1984-07-01), Korenberg
patent: 4473032 (1984-09-01), Maintok
patent: 4538549 (1985-09-01), Stromberg
patent: 4584949 (1986-04-01), Brannstrom

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