Hitoo Kakiyama

Title: Hitoo Kakiyama: Innovator in Coal Liquefaction

Introduction

Hitoo Kakiyama is a notable inventor from Tosu, Japan, recognized for his contributions to the field of coal liquefaction. With a total of 3 patents, Kakiyama has made significant advancements in the production of ashless liquid fuels and the liquefaction of coal.

Latest Patents

Kakiyama's latest patents include a process for the production of ashless liquid fuels. This innovative method involves mixing powdery coal with a pitch that has a C/H ratio ranging from 0.90 to 1.20. The mixture undergoes heat treatment at temperatures between 400°C and 450°C, followed by the removal of a solid coagulated material formed in the treated product. The pitch used is derived from the heat treatment of residual oil during crude oil distillation. Another significant patent is his process for liquefying coal, which aims to produce liquid fuel and pitch-like substances suitable for various carbonaceous materials. This process incorporates powdery coal with heavy oil that has a high carbon content, subjecting the mixture to heat treatment at temperatures between 320°C and 400°C for a duration of 0.5 to 10 hours.

Career Highlights

Throughout his career, Hitoo Kakiyama has held prominent positions, including Director-General of the Agency of Industrial Science and Technology. His leadership in these roles has contributed to advancements in industrial science and technology in Japan.

Collaborations

Kakiyama has collaborated with notable individuals in his field, including Hidemasa Honda and Yasuhiro Yamada. Their collective efforts have furthered research and development in coal liquefaction technologies.

Conclusion

Hitoo Kakiyama's innovative work in coal liquefaction and ashless fuel production has made a lasting impact on the industry. His patents and career achievements reflect his dedication to advancing technology in this vital area.