Shigeki Ishine

Title: Shigeki Ishine: Innovator in Sodium Carbonate Anhydride Preparation

Introduction

Shigeki Ishine is a notable inventor based in Ube, Japan. He has made significant contributions to the field of chemical engineering, particularly in the preparation of sodium carbonate anhydride. His innovative approach has led to advancements in the production processes of this important chemical compound.

Latest Patents

Shigeki Ishine holds a patent for the "Preparation of sodium carbonate anhydride." This patent describes a method for obtaining a thick suspension of sodium carbonate anhydride through the countercurrent contacting of high-pressure steam with a suspension of sodium bicarbonate or sodium sesquicarbonate in a concentrated sodium carbonate solution. The process involves maintaining a reaction temperature above 150°C to promote the decomposition reaction to near completion, resulting in a high concentration of HCO₃⁻ ions in the solution. The suspension is then cooled to transition the anhydride to the monohydrate, followed by the separation of the crystalline monohydrate from the mother liquor. The calcination of this monohydrate yields a dense soda ash with high purity and uniform particle size, while the mother liquor is recycled for further preparation of sodium bicarbonate suspension.

Career Highlights

Shigeki Ishine is associated with Central Glass Company, Limited, where he has applied his expertise in chemical processes. His work has not only contributed to the company's advancements but has also positioned him as a key figure in the field of chemical innovation.

Collaborations

Shigeki Ishine has collaborated with notable colleagues, including Yosisige Fujita and Kazuyoshi Morita. Their combined efforts have fostered a productive environment for innovation and development within their field.

Conclusion

Shigeki Ishine's contributions to the preparation of sodium carbonate anhydride exemplify the impact of innovative thinking in chemical engineering. His work continues to influence the industry and showcases the importance of collaboration in achieving significant advancements.