摘要
乙烯是石化工业的重要基础原料,其生产过程复杂,涉及裂解、急冷、压缩和低温分离等多个环节.文章围绕乙烯生产过程存在的反应器温度分布不均、裂解炉管积碳和分离塔操作复杂等问题展开分析,提出了一系列优化对策.通过优化进料分布、强化传热传质、改进炉管材质和优选裂解工况等措施,有效改善了温度场均匀性,减缓了积碳速率,提高了分离塔操作的稳定性.实际应用表明,优化后乙烯收率提高 3 个百分点以上,能耗降低 10%以上,为乙烯装置的安全、高效、稳定运行提供了理论指导和实践依据.
Abstract
Ethylene is a vital raw material in the petrochemical industry,with its production process being intricate,encompassing steps such as cracking,quenching,compression,and cryogenic separation.This paper delves into issues prevalent in ethylene production process,including uneven temperature distribution in reactors,coking of pyrolysis furnace tubes,and the complexity of distillation column operations.It subsequently proposes a series of optimization strategies.By optimizing feedstock distribution,enhancing heat and mass transfer,improving furnace tube materials,and selecting optimal cracking conditions,the uniformity of the temperature field is significantly improved,the rate of coke deposition is slowed down,and the stability of distillation column operations is heightened.Practical applications have demonstrated that these optimizations lead to an increase in ethylene yield by over 3 percentage points and a reduction in energy consumption by more than 10%,thereby providing theoretical guidance and practical evidence for the safe,efficient,and stable operation of ethylene plants.
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