Location History:
- Karlstad, SE (2014)
- Sundsvall, SE (2014 - 2017)
Company Filing History:
Years Active: 2014-2017
Title: Fredrik Wilgotson: Innovator in Kraft Pulp Processing
Introduction
Fredrik Wilgotson is a notable inventor based in Sundsvall, Sweden. He has made significant contributions to the field of pulp and paper technology, particularly in kraft cooking methods. With a total of three patents to his name, Wilgotson's work focuses on enhancing the efficiency and yield of chemical pulp production.
Latest Patents
One of Wilgotson's latest patents is the "Kraft cooking method using polysulfide cooking liquor." This innovative method aims to increase the pulping yield from lignin-containing cellulosic material by utilizing polysulfide cooking liquor. The process involves a first impregnation stage at high alkali and polysulfide concentrations, conducted at low temperatures. Additionally, knots are incorporated into a high-pressure conduit that connects an impregnation vessel to a digester.
Another significant patent is the "Method and arrangement for adding treatment liquors to cellulose material in a down flow vessel." This method facilitates the addition of treatment liquid to comminuted cellulose material, such as wood chips, during the continuous manufacture of chemical pulp. The process employs a down-flow vessel where chips descend in a plug flow, allowing for continuous feeding of treated chips from the bottom. The design includes at least one telescopic pipe that extends into the plug flow, enabling adjustments for the addition of treatment liquid based on operational parameters.
Career Highlights
Throughout his career, Fredrik Wilgotson has worked with prominent companies in the industry, including Valmet AB and Valmet Aktiebolag. His experience in these organizations has contributed to his expertise in pulp processing technologies.
Collaborations
Wilgotson has collaborated with notable colleagues such as Daniel Trolin and Mikael Lindstrom. Their joint efforts have further advanced the field of kraft pulp production.
Conclusion
Fredrik Wilgotson's innovative patents and career achievements highlight his significant role in the advancement of kraft pulp processing technology. His contributions continue to influence the industry and improve production methods.