Method of unplugging dense conveying system

Details Method of unplugging dense conveying system Method of unplugging dense conveying system

1981-03-16

1983-06-21

Love, John J.

Conveyors: fluid current

Processes

406 45, 406 95, B65G 5316

Patent

active

043891438

ABSTRACT:
The plugging of fluidized solids in long transfer lines is a particularly troublesome problem from an operational standpoint. Obstructions are cleared by closing off the transfer line at both ends, introducing an inert (non-deleterious) gas into the conduit at a few atmospheres pressure above the pressure at the conduit output, maintaining the gas pressure for a time to allow pressure equilization along the conduit, and thereafter opening the conduit outlet to permit the plugged solids to refluidize and then clear the line.

REFERENCES:
patent: 2897005 (1959-07-01), Wiltse
patent: 3929379 (1975-12-01), Krambrock
patent: 4067622 (1978-01-01), Krambrock et al.
patent: 4171925 (1979-10-01), Krambrock
The South African Mechanical Engineer-vol. 25; Dec. 1975-p. 395, described in Pneumotransport 3, Third International Conference on the Pneumatic Transport of Solids in Pipes, Apr. 7th-9th, 1976 and is entitled Latest Developments and Applications of High Density Pneumatic Conveying Systems, by W. Flatt-Buhler Brothers Ltd., Switzerland.

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