TREESEARCH logotype 2 black

Holmen

NeoPulp – New perspective to the development of pulp fibre properties

Heterogeneity is one of the fundamental scientific and technological challenges of all bio-based materials. The research area of NeoPulp is pulping and papermaking processes. We plan to study the heterogeneity between fibres that affects both process performance and the properties of current and new fibre-based materials. This is a largely unexplored research area where the […]

NeoPulp – New perspective to the development of pulp fibre properties Läs mer »

Improved uniformity of the fibers liberated in the kraft pulp digester 

This project sets out to elucidate mass transport characteristics during delignification of wood chips as a means of understanding and controlling non-uniform delignification effects, associated to low efficiency and poor property control in the current pulping processes. To obtain information on local variations of delignification effect in a wood chip, the treated chips will be

Improved uniformity of the fibers liberated in the kraft pulp digester  Läs mer »

Efficient Washing of Paper grade pulp in the kraft process

The project contributes to strengthened Swedish competitiveness through its expected research results and new fundamental knowledge for the development of an efficient pulp washing process and thus through an increased pace of innovation in the transition to a circular economy. After pulping the wood chips, the resulting pulp fibres and cooking liquor are separated in a

Efficient Washing of Paper grade pulp in the kraft process Läs mer »

The kinetics of lignin extraction in oxygen delignification.

The current and future environmental challenges call for improved and more sustainable processes in the pulp industry. To contribute to a sustainable and competitive Swedish bioeconomy the pulp industry needs to increase efficiency without increasing the use of hazardous chemicals. Oxygen delignification is a unit process that has been used in pulp mill fiberlines between

The kinetics of lignin extraction in oxygen delignification. Läs mer »

Multi scale modeling of the delignification kinetics during kraft cooking

The kraft process is today the dominant industrial technology for the production of pulp from wood.In this process, wood chips are boiled with chemicals in order to dissolve lignin, hemicellulose andextractives. The process itself contains several complex mass transport mechanisms, where thechemicals are to be transported into the wood chip and then further into the

Multi scale modeling of the delignification kinetics during kraft cooking Läs mer »

Controlling product characteristics on board machine utilization process data

Quality on any board and paper products is dependent on being able to maintain low variability within product characteristics. A common problem is that these characteristics are measured cannot be measured online in the production, and is the time resolution will therefor be very low. The product characteristics will be dependent on the process characteristics, where

Controlling product characteristics on board machine utilization process data Läs mer »