甲醇-乙醇分离塔设计

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1、刘总，以下是Aspen在不同状态方程下设计的甲醇乙醇分离塔参数：给定参数数值进料量14kg/h（10t/month）甲醇百分数0.7乙醇百分数0.3塔顶甲醇浓度0.995塔顶冷凝器压力105Kpa塔釜压力110Kpa进料温度67C本-罗宾逊状态方程下计算结果：参数单位Minimumrefluxratio:（最小回流比）2.05103502Actualrefluxratio:（实际回流比）4.10207004Minimumnumberofstages:（最小塔板数）22.4154172Numberofactualstages:（实际塔板数）30.6956

2、764Feedstage:（进料板数）17.3535025Numberofactualstagesabovefeed:（实际进料板数）16.3535025Reboilerheatingrequired:（再沸器热量）13939.6694kcal/hrCondensercoolingrequired:（冷凝器冷凝量）13918.4179kcal/hrDistillatetemperature:（馏出物温度）64.9441012CBottomtemperature:（塔釜温度）78.7822818CDistillatetofeedfraction:（这个参

3、数不懂，可能是顶出料占进料百分数）0.76766365回流比一定时，塔顶甲醇浓度和塔板数关联图（X轴表示甲醇浓度，Y轴表示塔板数）：塔顶甲醇浓度一定时，塔板数和回流比的关联图（X轴表示回流比，Y轴表示塔板数）：理想状态方程下塔各参数计算结果：参数单位Minimumrefluxratio:1.80086733Actualrefluxratio:3.60173466Minimumnumberofstages:19.5093594Numberofactualstages:27.0712084Feedstage:14.0684564Numberofactual

4、stagesabovefeed:13.0684564Reboilerheatingrequired:11792.7233kcal/hrCondensercoolingrequired:11765.5301kcal/hrDistillatetemperature:65.4594945CBottomtemperature:80.1283075CDistillatetofeedfraction:0.76766365对比本-罗宾逊方程计算结果可知，两种计算结果接近，可作为塔设计的参考值。进料参数：Substream:MIXEDMoleFlowkmol/secM

5、ETHA-018.4958e-05ETHAN-012.5324e-05TotalFlowkmol/sec0.00011028TotalFlowkg/sec0.00388888TotalFlowcum/sec5.2417e-06TemperatureK340.336243PressureN/sqm101325.001VaporFrac0LiquidFrac1SolidFrac0EnthalpyJ/kmol-242676651EnthalpyJ/kg-6881868.9EnthalpyWatt-26762.823EntropyJ/kmol-K-246047

6、.42EntropyJ/kg-K-6977.4577Densitykmol/cum21.0391259Densitykg/cum741.906693AverageMW35.26319LiqVol60Fcum/sec4.8999e-06塔顶甲醇物料参数：Substream:MIXEDMoleFlowkmol/secMETHA-018.4533e-05ETHAN-011.2662e-07TotalFlowkmol/sec8.4659e-05TotalFlowkg/sec0.00271444TotalFlowcum/sec3.6313e-06Temperat

7、ureK338.609498PressureN/sqm105000VaporFrac0LiquidFrac1SolidFrac0EnthalpyJ/kmol-234249220EnthalpyJ/kg-7305872.8EnthalpyWatt-19831.386EntropyJ/kmol-K-227747.76EntropyJ/kg-K-7103.1022Densitykmol/cum23.3139009Densitykg/cum747.516857AverageMW32.0631394LiqVol60Fcum/sec3.417e-06塔釜乙醇物料参

8、数：Substream:MIXEDMoleFlowkmol/secMETHA-014.2479