Nan Shi

Title: Innovations by Inventor Nan Shi

Introduction

Nan Shi is a prominent inventor based in Qingdao, China. He has made significant contributions to the field of environmental remediation and materials science. With a total of two patents to his name, his work focuses on innovative methods for treating contaminated soil and producing high-quality carbon fibers.

Latest Patents

One of Nan Shi's latest patents is a combined treatment method for petroleum-contaminated soil. This method includes impurity removal pretreatment, photocatalytic pre-oxidation, stepwise thermal desorption of petroleum from soil, and high-temperature oxidation. Utilizing iron-titanium composite metal oxide (ITCMO) as a catalyst, the process conducts oxidation pretreatment under light conditions, effectively breaking down macromolecular petroleum contaminants. The method achieves a removal rate of over 98.00%, allowing for the efficient and harmless remediation of high-concentration petroleum-contaminated soil, which can then be reused.

Another significant patent involves the preparation methods of high modulus carbon fiber (HMCF) and its precursor, mesophase pitch (MP). The preparation method includes separating components with a molecular weight distribution of 400 to 1,000 from heavy oil raw material through size-exclusion chromatography (SEC). The components undergo ion-exchange chromatography (IEC) to obtain modified feedstock oil, which is then subjected to thermal polycondensation and carbonization. The resulting MP is characterized by high mesophase content, low softening point, and excellent spinnability, making it a high-quality raw material for HMCFs.

Career Highlights

Nan Shi is affiliated with the China University of Petroleum, where he conducts research and develops innovative solutions in his field. His work has garnered attention for its practical applications in environmental sustainability and advanced materials.

Collaborations

Nan Shi collaborates with notable colleagues, including Dong Liu and Fushan Wen, to further enhance his research and development efforts.

Conclusion

Nan Shi's contributions to the fields of environmental remediation and materials science highlight his innovative spirit and dedication to solving pressing challenges. His patents reflect a commitment to advancing technology for a sustainable future.