Metso Paper Inc.

Valmet Corporation

Valmet Technologies Oy

Richard Solin

Mika Viljanmaa

Pertti Heikkila

Hans Sundqvist

Seppo Luomi

Juha Kivimaa

Matti Lares

Bertel Karlstedt

Pertti Heikkil&auml;

Olli Huhtala

Pasi Rajala

Johan Lindholm

Rami Aaltonen

Matti Lepisto

Pertti K Heikkilä

Markku Laitonen

Roland Banecki

Eelis Matilainen

Tapani Tilli

Heli Kankare

Knut Ringbom

Jean Jansen

Pertti HeikkilÄ

Eveliina Karjala

Juha Kovanen

Petri Lewandowski

Antti MÄNTYNEN

Sampo Immonen

Sari Behm

Mikko MAJAMÄKI

Toni Tikka

The object of the invention is an end part () of an air dryer, the air dryer being applicable for drying a pulp web, such as a cellulose web or the like. The end part comprises a fan tower (), and a roll tower in which a number of turn roll () are arranged mainly on top of each other in order to turn the travelling direction of the pulp web in the air dryer, the longitudinal axis of the roll. towers being parallel, and a fan tower arranged at a distance from the roll tower, adjacent to it, comprising a number of fans arranged on top of each other, a single fan being arranged to blow heated air as drying air to a dryer group. The end part further comprises one or more centrifugal fans () arranged in the direct vicinity or the roll tower, and a number of end drying means () arranged between the roll tower and the dryer group of&#x2014;the fan of the fan tower, to which end drying means drying air is supplied with said centrifugal fan or fans. A further object of the invention is also a method in the end part of an air dryer, an air dryer and use of a centrifugal fan.

End part of an air dryer, air dryer, method in the end part of an air dryer and use of fan

A nozzle arrangement in an airborne web-drying apparatus for drying a coated paper web ( ) or the like. The nozzle arrangement comprises at least one overpressure nozzle ( ), which is arranged to blow drying air both in the web's travel direction and against the web's travel direction. The nozzle arrangement comprises further a direct impingement nozzle ( ) combined with the exit side and/or the entrance side ( ) of the overpressure nozzle, in which direct impingement nozzle a plurality of nozzle slots or nozzle orifices ( ) are formed in order to blow drying air mainly perpendicularly toward the web. The perpendicular distance (a ) from the nozzle surface ( ) of the direct impingement nozzle ( ) to the web is larger than the perpendicular distance (a ) from the supporting surface ( ) of the overpressure nozzle ( ) to the web.

Nozzle arrangement in airborne web-drying and method for improving heat transfer in airborne web-drying

A method and a device for stabilizing the web run in a paper machine or the like having a blow suction module ( ) mounted above and/or below the web. The blow suction module comprises a blow nozzle unit ( ) extending across the web, through which gas, such as air or combustion gas, is blown against the web ( ) from the blow nozzle unit, and a first air discharge unit ( ) arranged on the front side of the blow nozzle unit, and a second air discharge unit ( ) arranged on the back side of the blow nozzle unit, which remove air or gas from between the web and the blow suction module. The blow suction module is asymmetric regarding the first and second air discharge units, so that more air or gas is discharged via the first air discharge unit than via the second air discharge unit.

Method and apparatus for stabilizing the running of a web in a paper machine or a like

Method and apparatus for drying a coated paper web (W) or the like web. The apparatus (,) comprises sequentially in the running direction of the web&mdash;a turning device (,) arranged on the first side of the web and provided with blow nozzles (,), with which the running direction of the web to be dried is turned in a non-contacting way, and web drying devices (,&prime;) arranged on the first and the second sides of the web, in which the web is dried in a non-contacting manner. The apparatus further comprises a counterpart (,) provided with overpressure nozzles (,), arranged on the second side of the web at the point of the turning device (,), for stabilizing the web run by means of blows generating a local overpressure between the web (W) and the carrier surfaces of the overpressure nozzles (,).

Method and apparatus for drying a coated paper web or the like

A method and flotation dryer unit effects drying of a web such as a coated paper web. The flotation dryer unit advantageously includes several nozzle boxes extending across the web for feeding drying air toward the web to be dried, a distribution chamber for drying air for leading the dry air into the nozzle boxes, and a suction chamber for gathering the drying air led toward the web from the web area and for directing it to the side of the web. The suction chamber is divided into an equalizing space and an air transport chamber by a perforated plate for equalizing the return air flow occurring from the web area.

Flotation dryer unit and method of use

A method and device for contact-free treatment of a web in which the web is treated, for example supported, reversed, spread, carried, and/or dried, by blowings which provide a carrier-face zone. The carrier-face zone has a curved form regulatable in a direction transverse to the direction of progress of the web. The nozzle-carrier face unit of the device is bent to the curved form in the cross direction of the machine while a frame part of the device is kept in a stationary position. The device includes a regulation arrangement for bending the nozzle-carrier-face unit to a curve form in the direction transverse to the running direction of the web while the frame part of the device is supported in a stationary position.

Method and device in contact-free treatment of a web

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Kemiö, Finland

Richard Solin