Yongrong Yang

Title: Yongrong Yang and His Work in Olefin Polymerization.

Introduction

Yongrong Yang is an inventor associated with Hangzhou, China. His patent work concerns olefin polymerization, with a focus on combining catalyst systems and reactor processes to improve polyolefin production.

Latest Patents

Yang is associated with 1 patent: “Olefin Polymerization Method and System.” The invention combines supported dual catalysts with a series process involving two reactors. A liquid material produced through heat exchange and gas-liquid separation of a circulating gas stream enters the first reactor, where it contacts the catalysts and undergoes polymerization. The reaction material and the first polyolefin then move to a second reactor for further polymerization.

The process enables particles to circulate between the reactors, improving the mixing of polyolefins with substantially different properties and helping prevent phase separation. Introducing ethylene gas into the first reactor also lowers the hydrogen-to-ethylene ratio, which can increase polyethylene molecular weight and improve product performance.

Career Highlights

Yang’s listed organizational affiliations include China Petroleum & Chemical Corporation and Zhejiang University. His patent reflects work on reactor design and process control for producing polyolefins with improved properties.

Collaborations

His listed coworkers include Jingdai Wang and Jingyuan Sun.

Conclusion

Yongrong Yang’s patent focuses on a two-reactor olefin polymerization process designed to improve catalyst contact, polymer mixing, and the performance of the resulting polyolefins.