Method for introducing solids into a solids upflow vessel

Details Method for introducing solids into a solids upflow vessel Method for introducing solids into a solids upflow vessel

1979-09-12

1981-02-10

Garris, Bradley

Material or article handling

Apparatus for moving intersupporting articles into, within,...

Stack forming apparatus

48 86A, 48197R, 48210, 201 41, 202262, 414187, 414198, B65G 2504, C10B 3102, C10B 4722

Patent

active

042498554

ABSTRACT:
A method for introducing particulate solids upwardly through a bottom solids inlet of a solids upflow vessel wherein after full extension of a piston to displace solids from a feed cylinder into the solids upflow vessel, the piston is partially retracted to "relax" the bed of solids in the solids upflow vessel. The bed relaxation step reduces the piston-to-solids pressure during the pumping stroke as well as substantially reducing the solids loading pressure on the device used to prevent backflow of solids from the upflow vessel during refilling of the feed cylinder.

REFERENCES:
patent: 300385 (1884-06-01), Mathieu
patent: 2501153 (1950-03-01), Berg
patent: 2640014 (1953-05-01), Berg
patent: 2871170 (1959-01-01), Bewley et al.
patent: 2875137 (1959-02-01), Lieffers et al.
patent: 2895884 (1959-07-01), Switzer
patent: 4033467 (1977-07-01), Bewley et al.
patent: 4037736 (1977-07-01), Pownall et al.

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