乙烯装置蒸汽系统运行分析及优化

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关键词:: 乙烯装置；蒸汽系统；运行分析；优化
Ethylene Plant; Steam System; Operation Analysis; Optimization

摘要:: 随着乙烯装置脱瓶颈改造实施，蒸汽管网系统运行工况与原设计偏差较大，蒸汽能耗升

高较多，通过与中国石油及中国石化乙烯装置蒸汽能耗对比分析，找出了导致乙烯装置蒸汽

能耗偏高的原因；重点分析了裂解炉产汽率低、中压蒸汽消耗量大及裂解气压缩机组运行效

率下降等突出问题；并提出从重点设备入手，通过提高蒸汽产量及减少蒸汽消耗量，同时通过

蒸汽梯级利用优化，提升用能效率，降低蒸汽能耗。

Following the debottlenecking revamp of the ethylene plant, significant deviations emerged between the actual operating

conditions of the steam pipe network system and the original design specifications, resulting in a substantial rise in steam energy

consumption. By conducting comparative analysis on steam energy consumption data from ethylene plants operated by PetroChina

and Sinopec, the root causes of excessive steam consumption in the ethylene unit were identified. This paper focuses on prominent

issues including low steam generation rate of cracking furnaces, high medium-pressure steam consumption, and reduced operational

efficiency of cracking gas compressor units. Corresponding countermeasures are proposed targeting key equipment: boosting steam

output, cutting steam consumption, and optimizing cascaded steam utilization to improve overall energy efficiency and reduce steam

energy consumption.