Vibration method for unplugging a slurry pipeline

Details Vibration method for unplugging a slurry pipeline Vibration method for unplugging a slurry pipeline

1984-06-11

1985-11-05

Nase, Jeffrey V.

Conveyors: fluid current

Pulsing fluid current

4255, 134 1, 134 2212, 134 24, 134169C, 406191, 406197, B65G 5366

Patent

active

045510415

ABSTRACT:
Method for unplugging a pipeline filled with fluid and solid material by blocking the pipeline below the plugged portion, injecting pressure pulses into the pipeline on both sides of the plugged portion until the plugged portion becomes fluidized and then forcing water into and through the plugged portion to remove the plug. The method further contemplates controlling the frequency and the phase of the injected pressure pulses to best match the length of the pipeline between the injected pulses so that the pulse applied to each side of the plug is out of phase.

REFERENCES:
patent: 2267064 (1941-12-01), Wikelund
patent: 2621668 (1952-12-01), Crispin
patent: 2877781 (1959-03-01), Lipp et al.
patent: 4389143 (1983-06-01), Nadin et al.

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