en.Wedoany.com Reported - As of May 12, the polypropylene plant at PetroChina Daqing Petrochemical had achieved 1,010 days of continuous and stable operation, setting a new long-term operation record for similar units in China and demonstrating the company's continuous optimization capabilities in polyolefin plant operation and maintenance management.
The plant operates on a single-line basis, with tightly integrated process sections such as polymerization, flashing, and pelletizing, making long-term operation highly challenging. Through technical breakthroughs and meticulous management, Daqing Petrochemical elevated its operational cycle from its historical best to a new industry benchmark. During this operational cycle, the plant has cumulatively produced over 300,000 tons of polypropylene products.
In terms of technological innovation, to address bottlenecks restricting stable operation, such as inaccurate pressure indications in the loop reactors and reduced heat exchange capacity in the reboilers, the technical task force at Daqing Petrochemical's No.1 Chemical Division adopted a "dual-pressure comprehensive judgment method" and optimized interlock strategies. This enabled precise control of core process parameters, significantly enhancing the operational stability of the plant.
Regarding scientific operation and maintenance, the company strictly controls the polymerization reaction temperature, stabilizing its fluctuation range within 0.3 degrees Celsius. Simultaneously, it implements a predictive maintenance model, utilizing online monitoring systems for precise assessments to improve the operational quality of key units like the extrusion pelletizer, reducing the plant's material consumption to a low level of 1,006 kg/ton.
In terms of talent support, the company enhances the skills and emergency response capabilities of its staff through mentorship programs, practical drills, and incentive-based assessments. The No.1 Chemical Division has established an emergency authorization mechanism with clear responsibilities and rights, effectively strengthening the "one-minute response capability" and providing a guarantee for the plant's long-term safe operation.
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