基于Aspen Plus的DMS制取DMSO的过程模拟和节能优化
Process simulation and energy-saving optimization of DMSO production from DMS based on Aspen Plus
针对DMS制取DMSO过程中DMSO纯度低、能耗高的问题,首先运用Aspen Plus软件对过氧化氢氧化法制DMSO进行初步模拟,然后运用灵敏度分析模块对精馏塔进行参数优化,接着在分析塔的能耗后对DMSO初分离塔和DMSO精制塔进行热泵精馏改造,最后以夹点技术为指导,通过删除小面积换热器、选用合理公用工程的方法对流程换热网络进行优化。模拟结果表明,热泵精馏改造后,总公用工程消耗减少85%;DMSO纯度由96.94%提升至99.99%;换热网络优化后,总公用工程消耗减少5%,碳排放量减少33%。在完成所有节能优化后,总公用工程消耗较初始流程减少85.75%,碳排放量减少33%,DMSO纯度稳定达到99.99%。
To address the problems of low DMSO purity and high energy consumption in the production of DMSO from DMS,the hydrogen peroxide oxidation process for synthesizing DMSO was simulated using Aspen Plus.Sensitivity analysis was employed to optimize key parameters of the distillation column.Based on the energy consumption profile,heat pump-assisted distillation was implemented for both the DMSO pre-separation and purification columns.Furthermore,guided by pinch analysis,the heat-exchange network was systematically optimized by eliminating minor heat exchangers and rationally selecting utility systems.The simulation results indicate that,after the heat pump retrofit,total utility consumption decreased by 85%,and DMSO purity increased from 96.94% to 99.99%.Subsequent optimization of the heat-exchange network further reduced total utility consumption by 5% and carbon emissions by 33%.Overall,after all energy-saving optimizations,the total utility demand was reduced by 85.75%,carbon emissions decreased by 33%,and product purity remained stable at 99.99%.
DMSO / 过氧化氢氧化法 / 换热网络优化 / 热泵精馏 / Aspen Plus
DMSO / hydrogen peroxide oxidation / heat exchanger network optimization / heat pump distillation / Aspen Plus
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教育部产学研协同育人项目(241001665294741)
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