Contact person
Lars Sundvall
Gruppchef Processteknik
Contact Lars
Cellulose - Pulp Technology
Pulp production plays a central role in the bioeconomy, the transition towards a fossil-free society, and circular processes. The main part of the fiber line is the pulp mill, where wood is treated with chemicals to produce pulp with exposed fibers, and for certain applications, the pulp is subsequently bleached.
Pulp technology at RISE supports research and development to meet the industry's constantly changing needs and challenges, as well as stricter requirements from authorities and customers. The focus is on developing sustainable and cost-effective process solutions throughout the value chain, from various raw materials, including recycled materials, to pulp for various purposes.
RISE works on improving existing processes for pulp cooking, oxygen delignification, bleaching, and developing new processes for pulp production. Optimizing processes for maximum raw material utilization, chemical savings, energy, water efficiency, and continuous reduction of environmental footprint are at the core of research and development.
With extensive experience in chemical pulp production (cooking and bleaching), access to modern equipment, and qualified specialists, RISE facilitates testing of ideas, laboratory and pilot-scale demonstrations, and accelerates implementation and troubleshooting on an industrial scale. We can provide the answers and information you need regarding:
- Suitability of raw materials (wood and other biomass) for various paper/cellulose applications
- Wood and pulp quality issues
- Wood chip treatments
- Cooking and bleaching conditions
- New cooking and bleaching agents, including enzymes
- Brightness and light stability
- Pulp activity
- Pulp and fiber properties
- Environmental impact
We work on both long-term research to improve existing cooking, oxygen delignification, and bleaching processes, as well as addressing acute process problems on the fiber line.
Some examples of what RISE can offer in pulp technology:
- Optimized cooking and bleaching strategies for pulp quality and process economics
- New sustainable pulp processes with minimal environmental impact
- Process transition regarding raw materials and/or final product
- Fractionation of cellulose, hemicellulose, and lignin from various raw materials according to the needs of the biorefinery
- Integration of biorefinery processes into chemical pulp mills
- Production of specialty cellulose for applications such as textiles and nanocellulose.
Dissolving Pulp
The field of dissolving pulp includes both manufacturing and evaluation of the pulp for different applications. The main application is the viscose process but there are also other processes for regenerating the cellulose and different types of cellulose derivatives. This field also includes modification of fibers such as pulp fibers, natural fibers such as cotton and recycled textile fibers.
The expertise in the field includes process optimization of the chemical pulping process, the viscose process and subsequent spinning process as well as treatment of fibers for more efficient modification and improved dissolution of the cellulose.
Fluff Pulp
With an increased population, sanitary products are used to a greater extent. Producers for fluff pulp can at RISE optimize and develop the process and product, both for the environment and the user, and performing a quality assessment of the original pulp can be part of that work.
Read more about Fluff pulp
Bleaching of Cellulose
By understanding the bleaching process and implementing necessary adjustments and optimizations, the paper and pulp industry can produce high-quality products with desired characteristics and durability. This not only helps meet customer requirements and expectations but also reduces environmental impact and promotes sustainable production methods.
