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以环丁砜-芳烃-非芳烃抽提体系液液相平衡实验数据为基础,利用Aspen Plus化工流程模拟软件,开发了l套用于芳烃液液抽提装置模拟的稳态工艺模型。基于某石化企业实际运行数据,采用该稳态工艺模型实现了对芳烃抽提装置的过程模拟。结果表明,各塔工艺操作参数与工业实际情况吻合较好。在此基础上,通过灵敏度分析考察了反洗比、溶剂比和回流比等重要操作参数对产品质量及装置能耗的影响,获得了液液抽提装置的最佳工艺操作参数,如抽提塔反洗比为0.38,汽提塔溶剂比为1.06和溶剂回收塔回流比为0.80等。优化结果与目前实际运行工况相比,可有效降低蒸汽消耗。
Based on the liquid-liquid equilibrium experimental data of sulfolane-aromatics-non-aromatic extraction system, a set of steady-state process models for the simulation of aromatics liquid-liquid extraction unit were developed using Aspen Plus chemical process simulation software. Based on the actual operation data of a petrochemical enterprise, the process simulation of aromatics extraction unit was realized by using the steady state process model. The results show that the operation parameters of each tower are in good agreement with the industrial actual situation. On this basis, the influence of the important operating parameters such as backwash ratio, solvent ratio and reflux ratio on product quality and device energy consumption was investigated through sensitivity analysis, and the optimum process parameters of liquid-liquid extraction device were obtained, such as extraction The tower backwash ratio was 0.38, the stripper solvent ratio was 1.06, and the solvent recovery column reflux ratio was 0.80. The optimization result can effectively reduce the steam consumption compared with the actual operating conditions.