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Inside the Qinzhou Port Petrochemical Industrial Park, the steel arm of a 1,250-ton crawler crane pierced through the morning mist. With the last epoxy reactor precisely installed in its base, the \"heart\" of the Phase 3 HPPO project at Huayi Qinzhou Base has been properly in place. This 72-hour \"steel waltz\" not only set a new record in the history of chemical manufacturing in the Beibu Gulf, but also marked China’s push toward achieving production capacities in the hundreds of billions in the field of propylene oxide produced via the hydrogen peroxide method. As the core of the HPPO process, the epoxidation reactor directly determines the purity of the 300,000 tons per year propylene oxide plant. Compared to the traditional chlorohydrin method, although the hydrogen peroxide method offers significant environmental advantages, the design of its reactors has long been constrained by foreign patents. The domestically produced equipment installed this time features 12 layers of precision catalyst beds, which enable the conversion rate of hydrogen peroxide to reach 98.5% while reducing by-products by 40%. Once operational, the project will be able to meet 15% of the country’s demand for polyurethane raw materials, providing a boost to industries such as those involved in manufacturing seats for new energy vehicles and insulation materials for cold chain logistics.
China’s hydrogen peroxide-based propylene oxide production process is striving to reach a production capacity of 100 billion units.