Bin Liu

Title: Innovations in Waste Lubricating Oil Recycling by Bin Liu

Introduction

Bin Liu is a prominent inventor based in Qingdao, China, known for his significant contributions to the field of waste lubricating oil recycling. With a total of 6 patents, Liu has developed innovative methods that enhance the efficiency and quality of lubricating oil recovery processes. His work not only addresses environmental concerns but also promotes resource utilization.

Latest Patents

Liu's latest patents include a method for hydrotreating and recycling waste lubricating oil. This method involves a two-step process of slurry bed pre-hydrotreatment and deep hydrotreatment. The process begins with the removal of mechanical impurities from waste lubricating oil, followed by flash distillation to separate free water and light hydrocarbons. The bottom product is then mixed with hydrogen and a self-sulfurizing oil-soluble transition metal catalyst before entering a slurry bed reactor for pre-hydrotreatment. The resulting liquid product undergoes hydrocyclone separation and solvent washing to yield a pre-treated lubricating oil component. This component is further processed in a series of reactors to produce high-quality naphtha, diesel oil, and lubricating base oil. The advantages of this method include simple processing procedures, high oil liquid yield, and excellent lubricating oil base quality.

Another notable patent is the method for pre-hydrotreating and purifying waste lubricating oil. This method also starts with the removal of mechanical impurities and flash distillation. The bottom product is mixed with hydrogen and a self-sulfurizing oil-soluble transition metal catalyst, entering a slurry bed reactor for pre-hydrotreatment. The gas product is purified through adsorption and recycled, while the liquid product is separated to obtain a purified lubricating oil component. This method boasts high conversion rates and good quality, further emphasizing Liu's innovative approach to waste oil recycling.

Career Highlights

Throughout his career, Bin Liu has worked with notable organizations, including the China University of Petroleum and CRRC Qingdao Sifang Co., Ltd. His experience in these institutions has allowed him to refine his expertise in the field of lubricating oil recycling and contribute to advancements in this area.

Collaborations

Liu has collaborated with esteemed colleagues such as Yongming Chai and Chenguang Liu. Their joint efforts have further propelled innovations in waste lubricating oil recycling.