Kun Zhang

Title: Innovations by Kun Zhang in Pulp Bleaching Technology

Introduction

Kun Zhang is an accomplished inventor based in Nanning, China. He has made significant contributions to the field of pulp bleaching technology. His innovative approach focuses on enhancing the efficiency of chlorine dioxide bleaching processes.

Latest Patents

Kun Zhang holds a patent for an apparatus and process aimed at excess heat recovery during high-temperature pulp bleaching. The patent details a system where the pulp from the high-temperature chlorine dioxide bleaching stage enters a tube-side of a chlorine dioxide preheater through a pipeline. Low-temperature chlorine dioxide from a storage tank is introduced into the shell-side pipeline of the preheater. A stabilizer, at a concentration of 0.5 mol/L, can be added during preheating to prevent chlorine dioxide from decomposing. The preheated chlorine dioxide is then transferred to a pulp mixer, where the pH is adjusted to a range of 3.2 to 3.8. The mixed pulp subsequently moves into a high-temperature chlorine dioxide bleaching tower for the bleaching process. The cooling pulp, exiting the preheater, undergoes washing in an alkaline extraction stage. The wastewater generated from this washing process flows directly into an effluent treatment system and is recycled after treatment.

Career Highlights

Kun Zhang is affiliated with Guangxi University, where he continues to advance research in pulp bleaching technologies. His work has garnered attention for its potential to improve environmental sustainability in the pulp and paper industry.

Collaborations

Kun Zhang collaborates with notable colleagues, including Xueping Song and Chengrong Qin, who contribute to his research endeavors.

Conclusion

Kun Zhang's innovative work in pulp bleaching technology exemplifies the importance of advancements in industrial processes. His patent for excess heat recovery demonstrates a commitment to enhancing efficiency and sustainability in the pulp and paper sector.