Sten L Haggstrom

Title: Sten L Haggstrom: Innovator in Delignification and Bleaching Processes

Introduction

Sten L Haggstrom is a notable inventor based in Overhornas, Sweden. He has made significant contributions to the field of chemical processing, particularly in the delignification and bleaching of lignocellulosic materials. With a total of three patents to his name, Haggstrom's work has advanced the efficiency and effectiveness of these processes.

Latest Patents

Haggstrom's latest patents include a method for controlling the supply of delignifying and/or bleaching chemicals. This innovative process allows for the continuous delignification and/or bleaching of lignocellulosic materials, such as wood and pulp. By controlling the addition of chemicals based on their relative consumption, time, and temperature, the process maintains a consistent level of chemical effectiveness throughout the treatment stage. Another significant patent involves the acid bleaching of cellulose pulp with peroxides. This process operates at a pH range of about -0.5 to about 3, followed by aqueous alkaline extraction of dissolvable lignin without the need for intermediate washing.

Career Highlights

Sten L Haggstrom is associated with Mo och Domsjo Aktiebolag, a company known for its innovative approaches in the chemical industry. His work has not only contributed to the company's success but has also positioned him as a key figure in the development of advanced chemical processes.

Collaborations

Haggstrom has collaborated with notable coworkers, including Greta K Fossum and John R Bergstrom. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

Sten L Haggstrom's contributions to the field of chemical processing, particularly in delignification and bleaching, highlight his role as an influential inventor. His patents reflect a commitment to improving industrial processes, making a lasting impact on the industry.