Duoshan Zhao

Title: Duoshan Zhao and His Butadiene Extraction Invention.

Introduction

Duoshan Zhao is an inventor based in Beijing, China. His work includes a process designed to improve the efficiency and environmental performance of butadiene-1,3 extraction.

Latest Patents

Zhao is associated with 1 patent, titled “Process of Butadiene-1,3 Extraction.” The invention combines first and second extractive fractionation with distillation and alkyne fractionation. By adding an alkyne fractionator to an existing butadiene extraction unit and adjusting operating conditions, the process aims to increase yield and production capacity while reducing energy and material consumption per unit of butadiene.

The patent description also reports that the process can reduce vinyl acetylene offgas discharge by approximately 3,400 tons per year, helping to limit environmental pollution and conserve energy. It states that the investment required to add an alkyne fractionator is similar across different plant scales, while potential returns increase with plant scale and output.

Career Highlights

Zhao’s patent focuses on improving an established industrial extraction process through equipment additions and process-condition adjustments. The described benefits include increased production, improved economic performance, and reduced emissions.

Collaborations

The provided information identifies Meng Wang and Minghua Wang as Zhao’s coworkers. It does not specify their roles in developing the patent.

Conclusion

Duoshan Zhao’s patented process addresses industrial efficiency and emissions by refining butadiene-1,3 extraction, with reported benefits in production capacity, resource use, and environmental impact.