Recently, related experts of Sinopec Organization jointly developed the "450,000 t/y fluidized bed drier" jointly developed by Tianhua Institute, Sinopec Beijing Engineering Construction Co., Ltd. and Tianjin Branch, and jointly developed by Tianhua Institute and Sinopec Baling Petrochemical Company. The SEBS grinding machine composes sets of units to conduct the subject identification. The 450,000 tons/year fluidized bed dryer is the world's largest single polypropylene unit. The production capacity and product quality meet and exceed the process requirements, and the overall technology has reached the international advanced level. Obtained two Chinese patents. The successful development of the SEBS grinding machine complete set has broken the monopoly of foreign companies on this technology. This achievement has been granted a Chinese utility model patent license and applied for one Chinese invention patent. The overall technology has reached the international advanced level, and nationalization is of great significance.

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