The pneumatic conveying system of Unit PP3 at Yulin Petrochemical achieved successful initial commissioning with all 11 compressors

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Successful one-time commissioning of 11 compressors in the pneumatic conveying system of the PP3 unit at Yueneng Chemical Industry Company Author/Source: Beijing Petrochemical Engineering Co., Ltd. Date: 2020-09-21 Views: 33 Recently, the 11 compressors in the pneumatic conveying system of the 400,000-ton/year polypropylene unit (hereinafter referred to as the “PP3 unit”) as part of Yueneng Chemical Industry Company’s first-phase expansion project, which was EPC-managed by Beijing Petrochemical Engineering Co., Ltd., were successfully commissioned all at once. This system is a crucial component in the post-treatment unit of PP3 device products; it is responsible for transporting the dried powder produced by the upstream units to the extruder for centralized granulation, and then to the packaging silo, serving as a link between the upstream and downstream processes. It is understood that this system mainly consists of a powder conveying system, a granule conveying system, and a granule processing system. The design capacity of the powder conveying system is 65 tons per hour of polypropylene powder; the gas used for conveying is nitrogen, and the power required for this purpose is provided by three oil-free, air-cooled single-stage screw nitrogen compressors with an inlet air flow rate of 5400 standard cubic feet per hour, operating in a two-in-use-one-backup configuration. The design capacity of the pellet conveying system PK-892 is 80 tons per hour for polypropylene pellets, while the design capacity of PK-901 is 90 tons per hour for polypropylene pellets; compressed air is used as the conveying gas in both systems. The pelletizing system PK-892 is powered by 2 oil-free, air-cooled single-stage screw air compressors with an inlet air flow rate of 4130 standard cubic feet per hour, while the pelletizing system PK-901 is powered by 1 air compressor with an inlet air flow rate of 5850 standard cubic feet per hour and 2 oil-free, air-cooled single-stage screw air compressors with an inlet air flow rate of standard cubic feet per hour. All compressors passed their initial test run successfully this time, laying a solid foundation for the subsequent purging of the entire pneumatic conveying system and the establishment of its operational processes.