Location History:
- Bandhagen, SE (2018)
- Stockholm, SE (2021)
Company Filing History:
Years Active: 2018-2021
Title: Innovations by Inventor Stefan Antonsson
Introduction
Stefan Antonsson is a notable inventor based in Stockholm, Sweden. He has made significant contributions to the field of cellulose processing, holding 2 patents that showcase his innovative approaches. His work focuses on methods that enhance the efficiency and cost-effectiveness of cellulose material processing.
Latest Patents
One of his latest patents is titled "Method for recovering concentrated hydrolysate after hydrolysis of cellulose material." This invention discloses a method for obtaining a strong hydrolysate from cellulosic material after a hydrolysis process in a batch digester. The process involves a two-stage hydrolysis, where the first stage is a steam phase followed by a liquid phase. The steam phase is conducted to achieve a packing increase of at least 20% to 100% in the cellulosic material. The liquid phase includes adding hot, preferably acidified hydrolysis liquid while maintaining a specific liquid-to-wood ratio.
Another significant patent is the "Cost efficient kraft cooking method using polysulfide cooking liquor." This invention relates to a method for preparing kraft pulp with increased yield from lignin-containing cellulosic material using polysulfide cooking liquor. The method aims to create a cost-efficient system by utilizing heated polysulfide liquor in an atmospheric vessel, which provides the necessary steaming effect for the cellulose material while minimizing delignification during the impregnation process.
Career Highlights
Stefan has worked with prominent companies such as Valmet AB and Valmet Aktiebolag. His experience in these organizations has allowed him to develop and refine his innovative methods in cellulose processing.
Collaborations
Throughout his career, Stefan has collaborated with talented individuals, including Lari Lammi and Petteri Kuusisto. These collaborations have contributed to the advancement of his inventions and the overall progress in the field.
Conclusion
Stefan Antonsson's contributions to cellulose processing through his innovative patents demonstrate his commitment to enhancing efficiency and sustainability in the industry. His work continues to influence the field and inspire future innovations.