Nirou Hoshishima

Title: Innovations of Nirou Hoshishima

Introduction

Nirou Hoshishima is a notable inventor based in Okayama, Japan. He has made significant contributions to the field of chemical engineering, particularly in the production of terephthalic acid. With a total of 3 patents to his name, Hoshishima's work focuses on improving filtration and crystallization processes.

Latest Patents

One of Hoshishima's latest patents is a "Crossflow type filtering operation method using ceramic filter." This invention provides a simple filtering operation method capable of conducting a filtering operation without clogging in a ceramic filter for an extended period. It is particularly useful in filtering fine crystals of terephthalic acid in an oxidation reaction mother liquor obtained during the production process. The method involves filtering fine crystals and performing a backwashing operation while maintaining a flowing circulation of the oxidation reaction mother liquor under predetermined conditions.

Another significant patent is the "Method of crystallization." This invention relates to a multi-stage crystallization process that includes feeding a solution of terephthalic acid or a slurry containing partially precipitated terephthalic acid to a first crystallization vessel. The process allows for the continuous supply of a cleaning solvent to prevent clogging in the delivery conduit, even when operated for several months.

Career Highlights

Hoshishima has worked with Mitsubishi Gas Chemical Company, Inc., where he applied his expertise in chemical processes. His innovative approaches have contributed to advancements in the industry, particularly in the production of terephthalic acid.

Collaborations

Throughout his career, Hoshishima has collaborated with notable colleagues, including Fumiya Zaima and Fumio Ohkoshi. These collaborations have further enhanced his research and development efforts in the field.

Conclusion

Nirou Hoshishima's contributions to the field of chemical engineering through his patents and innovative methods have made a significant impact on the production processes of terephthalic acid. His work continues to influence advancements in filtration and crystallization techniques.