We are pleased to announce that we have officially been granted a patent for the technology related to the Swirling Flow Classification Unit Technology (Spray Drying Apparatus and Spray Drying Method), which we have recently developed.

Patent Overview
Title: Spray Drying Apparatus and Spray Drying Method
International Publication Number: WO2020/031227
International Publication Date: February 13, 2020
Patent Holder: PRECI Co., Ltd.
URL: https://www.j-platpat.inpit.go.jp/c1801/PU/JP-2020-031227/19/ja

Key Features of the Technology
This invention relates to a core auxiliary technology for spray drying processes, including the Swirling Flow Classification Unit developed by us. The Swirling Flow Classification Unit is a classification device capable of improving powder collection efficiency at the bottom of the process chamber in spray dryers and spray coolers. Because the unit is powered by the process gas itself, no additional utility connections or installation work are required. It can also be retrofitted into existing production processes with minimal effort.

In fine ceramics granule production processes, granulated particles collected at the bottom of the process chamber are generally treated as the final product. Fine particles that pass through the process chamber are subsequently collected by a cyclone. However, particles recovered by the cyclone may be damaged due to the swirling airflow generated inside the cyclone. As a result, these particles are often discarded or recycled back into the raw material rather than being treated as final products. Therefore, improving the collection efficiency at the bottom of the process chamber directly contributes to enhanced process productivity and higher product yields. The Swirling Flow Classification Unit reduces the amount of powder that passes through the process chamber by generating a swirling airflow using rotating blades driven by the process gas. Simply installing the unit above the cyclone duct can significantly improve particle collection efficiency at the bottom of the chamber.

CEO’s Comment
We believe that the granting of this patent is a recognition of the powder processing expertise and research achievements that we have cultivated over many years. Through the commercialization of products utilizing this patented technology, we will continue to support our customers in addressing challenges in both R&D and manufacturing operations. We remain committed to developing proprietary technologies, strengthening our intellectual property portfolio, and driving continuous technological innovation.

Hayato Kato, Group CEO

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