A. Ahlstrom Corporation

Jukka Heino

Raimo O Kohonen

Kaj Henricson

Pentti A Vikio

Erkki E Savolainen

Pasi H Immonen

Erikki Savolainen

Method and apparatus for treating a gas containing aqueous fiber suspension in a fiber line process of a pulp mill including at least one of pulp screening, washing and bleaching includes (a) transferring the gas containing fiber suspension at a consistency to a treatment station; (b) treating said fiber suspension at the same level by removing a portion of the water from the fiber suspension so as to generate aqueous filtrate and treated fiber suspension having a relatively higher consistency; (c) simultaneously pumping and degassing the filtrate at the same level; and (d) pumping the treated fiber suspension having the relatively higher consistency away from the treatment station at the same level by imparting to the treated fiber suspension sufficient shear force so as to render the fiber suspension pumpable.

Method and apparatus for treating a gas containing aqueous fiber

Method and apparatus for treating a fiber suspension

Filter cylinder with drainage surface

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Savonlinna, Finland

Jukka Heino