Hideaki Kumagai

Title: Hideaki Kumagai: Heavy-Oil Hydrorefining Innovations

Introduction

Hideaki Kumagai is an inventor based in Toda, Japan, whose patent work focuses on catalysts and processes for hydrorefining heavy oil. His listed inventions address catalyst pore structure, desulfurization, and the removal and retention of metals. He is associated with Japan Energy Corporation and has 2 patents in the provided information.

Latest Patents

“Hydrofining Catalyst and Hydrofining Process” describes a heavy-oil hydrorefining catalyst with at least 0.5 mL/g of total pore volume in pores no larger than 60 nm, and a broad pore-size distribution across 8 to 30 nm. The patent states that the catalyst offers strong desulfurization and demetalization performance over an extended operating period. In multi-layer catalyst systems, it can also support stable operation at higher temperatures while maintaining desulfurization performance and improving demetalization.

“Catalyst for Hydrofining and Method for Preparation Thereof” concerns a hydrogenation-active metal supported on a refractory porous carrier. The specified catalyst has a median pore diameter of 8 to 20 nm and a nitrogen-adsorption pore volume of at least 0.56 cm³/g, alongside a substantial volume of larger pores measured by mercury intrusion porosimetry. The invention aims to combine high demetallizing activity with strong capacity to retain deposited metals. Its preparation involves kneading a porous powder principally composed of gamma-alumina, molding and calcining it, and then supporting the active metal component.

Career Highlights

Kumagai’s listed patent portfolio centers on improving heavy-oil processing through catalyst design and preparation. The inventions emphasize pore-size distribution and pore volume as factors that can support desulfurization, demetalization, and sustained catalyst performance. His work is associated with Japan Energy Corporation.

Collaborations

The provided information identifies Hiroki Koyama and Toru Saito as Kumagai’s coworkers. Their specific roles in the listed patents are not stated.

Conclusion

Hideaki Kumagai’s two listed patents focus on hydrorefining catalysts designed to improve heavy-oil treatment, metal removal, and operating stability.