【Insights from Other Companies】Nanhua Company Develops Salt Removal Technology for Rubber Antioxidants

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Nanhua Company achieves breakthrough in desalination technology for rubber antioxidants. Recently, a significant breakthrough was made in the desalination technology related to RT PES, an intermediate product for rubber antioxidants developed by Nanhua Company. New desalting agents and processes were created, which help reduce the production costs of rubber antioxidants such as 6PPD and IPPD, thereby enhancing the competitiveness of these products and enabling the company to save substantial amounts in overall costs. Previously, Nanhua Company’s production of RT Pepsis was constrained by three factors: high alkali consumption, salt accumulation that led to rising waste disposal costs, and unstable production. To address these challenges, in October 2024, Nanhua Company established a dedicated task force to focus on the key issues related to production technology and made every effort to overcome these technical hurdles. As a result, it was successful in breaking through the bottlenecks associated with RT Pisi’s desalination proprietary technology, thereby laying a solid foundation for the subsequent construction and operation of the facilities. In August this year, on the basis of completing preliminary tasks such as pilot tests and side-line trials, Nanhua Company independently designed and constructed the first set of RT-Pease desalination units, which were successfully put into operation. Overcoming the challenges posed by the high-temperature environment, researchers remained at the production site continuously, monitored the operation of the equipment in real time, and kept optimizing the operating parameters, which resulted in a 59% reduction in alkali consumption and 100% reuse of the alkaline solution. In September, the consumption of quaternary ammonium salts in RT PES products reached a record low.