Kvaerner Pulping Ab

Kvaerner Pulping Aktiebolag

Soren Gustavsson

Vidar Martin Snekkenes

Mikael H Lindstrom

Krister Olsson

Christofer Lindgren

Johan Engstrom

Petter Tibbling

Christer Fahlgren

Ewa W Johansson

This invention relates to a new and improved way of continuously cooking fiber material, wherein temperatures and alkaline levels are controlled to be maintained within specific levels in different zones of the digesting process in order to optimize chemical consumption and heat-economy, and, at the same time, achieving very good pulp properties.

Method and device for the continuous cooking of pulp

This invention relates to a new and improved way of continuously cooking fiber material, wherein temperatures and alkaline levels are controlled to be maintained within specific levels in different zones of the digesting process in order to optimize chemical consumption and heat-economy and at the same time achieve very good pulp properties.

Method for the continuous cooking of pulp

A method of manufacturing chemical pulp out of comminuted cellulosic fiber material comprising digesting the fiber material with digestion liquid without preceding peroxide stage. According to the invention the comminuted fiber material is treated in at least one stage prior to said digestion, in the presence of a liquid containing at least one compound having the ability to form complexes with metals existing naturally in the fiber material.

Pulp production

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Karlstad, Sweden

Soren Gustavsson