Chenguang Liu

Title: **Innovative Contributions of Chenguang Liu in Waste Lubricating Oil Treatment**

Introduction

Chenguang Liu, an accomplished inventor based in Qingdao, China, has made significant strides in the field of waste lubricating oil treatment. With a total of six patents to his name, Liu has developed innovative methods that not only enhance the recycling of waste lubricating oil but also promote environmental sustainability.

Latest Patents

Liu's latest patents highlight his pioneering work:

1. **Method for Hydrotreating and Recycling Waste Lubricating Oil**

This method involves a two-step process that begins with the removal of mechanical impurities from waste lubricating oil, followed by flash distillation to separate free water and light hydrocarbons. The resulting product undergoes pre-hydrotreatment using a slurry bed reactor, resulting in a high yield of refined products, including naphtha, diesel oil, and lubricating base oil. The process is noted for its simplicity, high liquid yield, and the capability for full-fraction resource utilization, making it a notable advancement in lubricant recycling technology.

2. **Method for Pre-Hydrotreating and Purifying Waste Lubricating Oil**

This innovation focuses on the purification of waste lubricating oil through the removal of impurities via flash distillation and subsequent steps that ensure a high conversion rate of non-ideal components. The use of a self-sulfurizing oil-soluble transition metal catalyst enhances the efficiency and effectiveness of the process, allowing for long-term stable operation and improved quality of the end product.

Career Highlights

Throughout his career, Chenguang Liu has held positions at prestigious institutions including the First Institute of Oceanography and China University of Petroleum. His work has significantly impacted the development of methods that address waste oil challenges and improve resource recovery processes.

Collaborations

Liu has collaborated with notable colleagues in his field, including Yanliang Pei and Baohua Liu. These partnerships have fostered the exchange of ideas and innovation, further aiding in the advancement of waste lubricating oil recycling technologies.

Conclusion

Chenguang Liu stands out as a key innovator in the field of waste lubricating oil treatment. His patents not only underscore his technical expertise but also reflect a commitment to sustainable practices in the industry. By developing effective methods for recycling and purifying waste lubricating oil, Liu contributes significantly to environmental protection and resource efficiency.