Metso Paper Karlstad Ab

Valmet Aktiebolag

Valmet Ab

Leif Videgren

Petteri Venetjoki

Ulf Haraldsson

Anders Lindén

Tord Gustavsson

Elin Engqvist

Jan Malm

Rune Skogsberg

Christian Ako

Arvid Johansson

Stefan PÅLSSON

Christian ÅKÖ

Aspects provide for a Whitewater processing system suitable for managing an ejected Whitewater spray during operation of a paper or board making machine. A de-air system may provide for improved removal of air from the Whitewater. A calming system may reduce turbulence in a liquid flow, reducing turbulence in the flume. The de-air system and calming system may be disposed together or separately. Certain aspects may be implemented with a turbine (e.g., used to generate electricity from the Whitewater spray). Some aspects may provide for improved handling of variable spray velocities.

Apparatus and method for processing white water in a paper machine

The invention relates to a unit () for deaeration of drainage water from a paper machine, said unit comprising an inlet () for receiving the drainage water in a first flow direction, an outlet () for removing the drainage water to a subsequent deaeration channel, and a first chamber () that is arranged downstream of the inlet, said first chamber comprising a first chamber part (), which comprises a guide wall portion () for redirecting the drainage water in a second flow direction that differs from the first flow direction, said guide wall portion being formed by a plurality of curved guide walls () which interact with the drainage water so that the drainage water is decelerated and air is forced out of the drainage water, and two end walls () which are arranged on respective sides of the guide walls, wherein each end wall of at least one of the flow channels exhibits an opening () that communicates with the flow channel for removing air that has been released from the drainage water in the flow channel. The invention also relates to a method for such a deaeration.

Unit and method for deaeration of drainage water

The invention discloses a pre-assembled self-supporting unit () for a twine wire forming section. The unit comprises an integrated save-all tray () and other integrated elements such as cross walkway (), piping beam (), connecting arms (). The rolls () for supporting at least one forming clothing loop () and the other elements are mounted onto this separate unit instead of being mounted onto the same machine frame. The unit provides a diminished foot print for the forming section, and it is dimensioned to fit in a standard transport container.

Unit in a forming section of a papermaking machine

Tissue machine

Portion of a tissue machine

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Karlstad, Sweden

Leif Videgren