Dongyun Ren

Title: Innovations of Dongyun Ren in Rubber Recycling

Introduction

Dongyun Ren is a notable inventor based in Nanjing, China. He has made significant contributions to the field of rubber recycling, particularly through his innovative methods for preparing reclaimed rubber. His work emphasizes energy efficiency and environmental protection, making it highly relevant in today's sustainability-focused landscape.

Latest Patents

Dongyun Ren holds a patent for a "Method of continuous preparation of reclaimed rubber using multi-stage screw extruders." This invention pertains to a method of preparing reclaimed rubber, specifically utilizing multi-stage screw extruders. The process involves the compaction and addition of a mixture of rubber powder and softener into a counter-rotating twin screw extruder. The softener permeates the waste rubber powder uniformly under heat, facilitating the primary desulfurization of the rubber waste. Following this, a preliminary devulcanized material is continuously added to a second multi-screw extruder, where rapid desulfurization and regeneration occur through the use of an activator and shear action. The desulfurized rubber powder is then cooled and transported into a third multi-screw extruder, enhancing the deprocessing performance under low temperature. The entire process is conducted under closed oxygen isolation conditions, ensuring safe, simple, and continuous desulfurization regeneration. This method is not only energy-saving but also environmentally friendly, yielding excellent properties in the recycled rubber.

Career Highlights

Throughout his career, Dongyun Ren has worked with prominent organizations, including Nanjing Green Gold Giant Rubber & Plastic Hi-tech Co., Ltd. and Beijing University of Chemical Technology. His experience in these institutions has allowed him to refine his expertise in rubber recycling technologies.

Collaborations

Dongyun Ren has collaborated with notable colleagues such as Liqun Zhang and Jinwei Shi. Their joint efforts have contributed to advancements in the field of rubber recycling and have fostered innovation in sustainable practices.

Conclusion

Dongyun Ren's innovative methods in rubber recycling highlight his commitment to sustainability and environmental protection. His contributions are paving the way for more efficient recycling processes in the rubber industry.