Apparatus for treating fibrous material with a gas

Details Apparatus for treating fibrous material with a gas Apparatus for treating fibrous material with a gas

1982-03-09

1984-01-17

Alvo, Steve

Paper making and fiber liberation

Apparatus

Digester

162 65, 162243, 162246, 34171, D21C 706, D21C 708, D21C 910

Patent

active

044262566

ABSTRACT:
A method and apparatus provide for the continuous treatment of a porous, fibrous material such as paper pulp, with a gas, such as ozone. The material is entrained with gas and passed in a first path. The material and gas move in a path defined by a downwardly curved upper wall and an open bottom, with a baffle disposed adjacent the bottom termination of the downwardly curved wall, so that the material is separated from the gas, the material flowing in a second path and the gas in a third path, distinct from the second path. The material in the second path is moved so that it intersects the flow of gas in the third path at least once, with the gas passing through the material while remaining in the third path, until the desired treatment of the material has been achieved. Preferably the second path is a serpentine path including horizontal portions, and the third path is a substantially straight downward path. After treatment, the material is discharged in a fourth path, and the gas passes along a fifth path.

REFERENCES:
patent: 1871773 (1932-08-01), Bennett
patent: 2425335 (1947-08-01), Messing et al.
patent: 3726756 (1973-04-01), Polak
patent: 3814664 (1974-06-01), Carlsmith
patent: 4123317 (1978-10-01), Fritzvold et al.
patent: 4253825 (1981-03-01), Fasano
patent: 4278496 (1981-07-01), Fritzvold

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