Metso Paper Inc.

Valmet Technologies, Inc.

Olli Huhtala

Richard Solin

Pasi Rajala

Paavo Sairanen

Pertti Heikkil&auml;

Petri Norri

Hannu Kokkala

Ilkka Eivola

Johan Lindholm

Markku Laitonen

Timo Vuokko

Tapani Tilli

Heli Kankare

Janne Mäkelä

Matias SJÖLUND

Kimmo Kaasinen

Tom Thorn

The invention relates to an apparatus and a method for removing a broken pulp web from a pulp dryer. The apparatus includes a maintenance platform arranged at the first or the second end of the pulp dryer, outside the walls of the pulp dryer; a device for shifting the maintenance platform in a substantially vertical direction to a desired height with respect to the pulp dryer, and an extraction device fixed to the edge of the maintenance platform facing the dryer for pulling a broken pulp web out of the pulp dryer.

Apparatus for removing a broken pulp web from a pulp dryer

A device () and method for removing a broken pulp web () from a pulp dryer and a maintenance platform () comprising such a device. The device () comprises an actuator (), a pulling means () functionally coupled to the actuator and adapted to be driven by the actuator, and a gripping means () coupled to the pulling means () and comprising means () for engaging to the pulp web. The actuator is arranged to actuate the gripping means via the pulling means. The actuator is used to pull the gripping means and along with it, the pulp web out from the pulp dryer.

Devices and method for removing broken pulp web from a pulp dryer and maintenance platform for a pulp dryer

The invention relates to an arrangement for threading a pulp web (W) from the press section () of a pulp machine to the dryer () of the pulp machine. The arrangement comprises a closing tail threading belt () or the like, which is arranged to convey the narrow tail end (W) formed on the pulp web (W) inside the dryer (), where the tail threading cord travels outside the edge of the normal web line of the pulp web. The tail end (W) can subsequently be broadened into a normal-width pulp web (W). The arrangement further comprises means () for gripping the tail end (W) in order to bring the tail end inside/between a closing tail threading cord () or the like, whereby the gripping means () are arranged to function at the normal running speed of the pulp machine. The arrangement comprises means () by which the tail threading cord () can be moved inwards from its normal route, towards the pulp web, to travel essentially in the same line with the tail end formed on the edge of the pulp web before the tail end is conveyed inside the tail threading cord, and means () by which the tail threading cord () and the tail end (W) inside it can be moved back to the normal route located outside the edge of the pulp web before entering the dryer ().

Arrangement for threading of web in a pulp machine

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

A fiber containing pulp, such as chemical pulp, mechanical pulp, thermomechanical pulp, TMP, de-inked water, or fiber containing sludge, is dried in an effective and efficient manner. The wet pulp is first dewatered mechanically, such as by using a drum or screw press. Then dewatered pulp is passed to a dryer. The dryer has first and second apertured cylindrical surfaces defining a gap between them, and drying gas is blown through one of the apertured surfaces, then through a pulp layer moving in the drying gap between the cylindrical surfaces, and then through the apertures in the other cylindrical surface, to evaporate water from the pulp and dry it to a dry matter content of over 80%, preferably about 85-90%.

Method and apparatus for drying pulp

Growing community of inventors

Littoinen, Finland

Olli Huhtala