Cellulose Technology for Pulp and Paper Process Development

RISE's unique chain of pilot facilities enables testing of the entire process, from wood raw material to finished pulp, at a smaller scale before investments are made in full-scale production. This reduces both risk and implementation costs while providing a sound basis for decision-making.

We provide the knowledge and expertise you need in areas such as:

• Suitability of wood and other biomass feedstocks for different pulp and paper applications
• Wood handling and chip preparation
• Chip pre-treatment processes
• Cooking and bleaching conditions
• Novel cooking and bleaching agents, including enzymes
• Brightness and brightness stability
• Pulp reactivity
• Pulp and fibre properties
• Environmental performance and impact

From urgent process challenges to long-term development

We support both short-term troubleshooting and long-term development projects. Our expertise spans the optimisation of pulping, oxygen delignification and bleaching processes, as well as the investigation and resolution of acute operational issues on the fibre line.

Whether your goal is to improve process efficiency, evaluate new raw materials, reduce environmental impact or develop the next generation of pulp products, we can support you from initial studies through to industrial implementation.

• Optimised cooking and bleaching strategies to improve pulp quality and process economics
• Development of sustainable pulping processes with reduced environmental impact
• Process conversion and optimisation to accommodate new raw materials and/or end products
• Fractionation of cellulose, hemicellulose and lignin from various feedstocks to meet biorefinery requirements
• Integration of biorefinery processes into chemical pulp mills
• Production of speciality cellulose grades for applications such as textile fibres and nanocellulose

1. Initial Needs Assessment
Together with RISE experts, you identify your challenges, objectives and key questions.

2. Project Planning
RISE recommends suitable pilot trials, tests or analytical studies based on your specific needs.

3. Testing and Evaluation
Studies and analyses are carried out at laboratory, pilot or industrial scale, depending on the scope of the project.

4. Results and Next Steps
You receive a clear report with findings, recommendations and support for further implementation and process development.

The following areas are encompassed within the field of dissolving pulp:

• The manufacturing process and subsequent evaluation of dissolving pulp is undertaken for the specific applications for which it is intended.
• The viscose process is one of several processes that can be used to regenerate cellulose.
• Cellulose derivatives are another category of material that can be produced through the process of cellulose regeneration.
• Modification of fibres is another process that can be used to produce cellulose derivatives. This includes pulp fibres, natural fibres such as cotton, and recycled textile fibres.

RISE possesses a distinctive chain of pilots, which are utilised for conducting studies across the entire process, from the extraction of raw wood materials to the generation of finished fluff pulp. This encompasses a series of meticulous procedures, including chipping, cooking, bleaching, and the rigorous evaluation of properties via a state-of-the-art analysis laboratory.

In addition to the purely technical aspects, RISE is able to assist with the evaluation of the specific analyses employed for the purpose of quality assessment of fluff pulp.

• Fibre dimensions are analyzed
• Energy consumption - hammer mill
• Ratio measurement
• Dry forming is performed to produce the small pads which are then used to analyze absorption properties.
• Complete physical testing can of course also be carried out to evaluate the physical properties of the pulp.

We always work in close dialogue with our customers to ensure value.

It is imperative for the paper and pulp industry to comprehend the bleaching process in order to implement the requisite adjustments and optimisations. This will enable the production of high-quality products that exhibit the desired characteristics and durability. This approach not only aligns with customer requirements and expectations but also contributes to reducing environmental impact and promoting sustainable production methods.

Bleaching of cellulose

Cellulosa kan utvinnas från betydligt fler råvaror än skog. Marin biomassa, såsom alger och tång, samt jordbruksrestprodukter erbjuder nya möjligheter för framtidens biobaserade material.

Genom att använda underutnyttjade och förnybara råvaror kan trycket på skogsresurser minska samtidigt som nya, hållbara materialflöden skapas. Dessa råvaror har potential att bidra till en mer cirkulär och resurseffektiv bioekonomi.

Marin biomassa och jordbruksrester kan användas för att utveckla högpresterande förpackningsmaterial och andra innovativa biobaserade produkter. För att möjliggöra industriell användning krävs kunskap om råvarornas egenskaper, processbarhet och prestanda.