聚烯烃装置气力输送系统问题分析及改进措施

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作者单位:: 中国石油兰州石化榆林化工有限公司，陕西榆林 719000
PetroChina Lanzhou Petrochemical Company Yulin Branch，Yulin 719000，China

关键词:: 聚乙烯；粉料；气力输送；过滤器；改进
polyethylene；powder；pneumatic conveying；filter；improvement

摘要:: 摘要：介绍了高密度聚乙烯装置粉料输送系统工艺流程，阐述了粉料输送系统存在的问题，结

合生产实际提出了粉料输送系统优化循环气返回线工艺流程、增设单向阀、增设平衡管、缓存

料斗下料线蝶阀更换为短接、增设保温板房、增设远程切断总阀、增设应急放空阀等改进措

施，杜绝了因粉料输送系统故障造成装置被迫停车的现象，延长了装置运行周期，为聚乙烯装

置设计提供了相关技术支持和理论依据。

Abstract: This paper introduced the process flow of powder conveying system in HDPE plant, expounded the problems existing in

powder conveying system, put forwardsome improvement measures combining with the actual production, such as optimizing the

circulating gas return line process of the powder conveying system, adding a check valve, a balance pipe, a insulation board room, a

remote cut-off main valve, an emergency emptying valve,replacing the butterfly valve of the blanking line of the cache hopper with

short connections, prevented the plant from being forced to shutdown due to the failure of the powder conveying system, extended

the operation cycle of the plant, which provided relevant technical support and theoretical basis for the design of polyethylene plant.