Device for mixing of a fluid into a pulp-suspension

Details Device for mixing of a fluid into a pulp-suspension Device for mixing of a fluid into a pulp-suspension

1999-09-29

2000-12-05

Hoffmann, John

Paper making and fiber liberation

Apparatus

Digester

162234, 162243, 162261, 211 4611, 211 4617, 261 85, 261 87, 261DIG42, 366307, D01G 1300

Patent

active

061561592

ABSTRACT:
Process and device for mixing fluid into a pulp suspension of cellulose-containing fiber material, in which the pulp suspension is pumped in through a pump inlet (17), brought into rotation and, at the desired reaction pressure, mixed with the said fluid while passing through a reaction sector comprising a stator shell (1), a rotor (7) which is coaxial therewith, and at least one fluid inlet (23), after which the pulp mixture leaves the reaction sector through a pulp outlet (20), in which the fluid, via the said fluid inlet (23), is supplied in the vicinity of the center of rotation of the rotating pulp suspension, where the local pressure in the pulp suspension is lower, due to the centrifugal force increasing radially outwards, than the reaction pressure prevailing at the periphery of the pulp suspension.

REFERENCES:
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patent: 3404065 (1968-10-01), Ingemarsson
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patent: 3725193 (1973-04-01), Montigny et al.
patent: 4339206 (1982-07-01), Ahs
patent: 4577974 (1986-03-01), Prough et al.
patent: 4842690 (1989-06-01), Gazdik et al.
patent: 5405497 (1995-04-01), Torregrossa
patent: 5536368 (1996-07-01), Makela et al.
patent: 5863120 (1999-01-01), Gallagher et al.

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