《化工系统工程基础》课程：assignment1

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1、大作业1高低压脱丙烷塔是乙烯生产装置中分离部分的重要流程，目的是将裂解气中C3以下组分（包含C3）与C3以上组分分离开来。木题的目的是对该流程进行模拟，通过调节两塔的操作参数（冋流比、蒸出比等），使高压塔塔顶和低压塔塔釜采出的浓度要求达到标准。（条件和要求略）解：运用ASPENPLUS实现如下:<>PUMP1A其中高压分离和低压分离塔都采用RADFRAC,依题意，高压分离塔不含有冷凝回流。输入所有block和输入物流1、8的数据。初始操作，对于高压分离塔HP,设定操作条件boilupratio1（再沸比率）。对于低压分离塔LP,设定操作条件boilupratio1

2、,refluxratio4（回流比率）。得到的仿真数据如下：HeatandMaterialBalanceTableStreamID12345678910Temperaturec16.0-8.3-24.865.662.610.712.8-46.012.848.6Pressurebar13.74013.51012.12012.5008.3807.90017.24012.12012.1408」00VaporFrac1.0000.9191.0000.0000.0000.0000.0000.2850.0000.147MoleFlowkmoyhr3565.9903565.99

3、03843.668340.623265.88374.74174.741543.56074.741340.623MassFlowkg/hr90244.26190244.26191682.11918110.75414962.3103148.4443148.4441200.1533148.45918110.754VolumeFlowcum/hr5748.8984904.4135905.09634.57027.3645.9255.961234.6775.961170.553EnthalpyGcaVhr-0.966■3.122・0.455-1.062-1.2120.0090

4、.013()」790.013-1.062MoleFlowkinoVhrco2.4602.4602550trace().090traceH2486.490486.490491.630trace5J40traceCH4950.940950.9401030.600trace79.660traceC2H229.74029.74029.740<0.001trace<0.001<0.001<0.001<0.001C2H41248.6701248.6701516340tracetracetracetrace267.670tracetraceC2H6132.730132.7301

5、69.570<0.001trace<0.001<0.00136.840<0.001<0.001C3H426.25026.2501&60412.19411.8760.31703174.230031712.194C3H6422.620422.620545.51192.96120.49972.46272.462143.39072.46292.961C3H812.39012.39017.5823.2601.2981.9611.9616.4901.9613.260C4H6127.430127.43013.519113.941113.941tracetrace0.030tra

6、ce113.941C4H108&5408&5408.02280.53880.538tracetrace0.020trace80.538C5H1237.73037.730trace37.73037.730tracetracetrace37.730可以看岀，分离没有达到要求，分析原因是LP的再沸器再沸比率和回流比率都较低。调整HP的boilupratio至0.9。调整LP的boilupratio2.5,refluxratio4.5。再次进行仿真:HeatandMaterialBalanceTableStreamID12345678910Temperaturec16.0

7、-83-26363.571.713.214.7-46.014.746.6Pressurebar13.74013.51012.12012.5008.3807.90017.24012.12012.1408.100VaporFrac1.0000.9191.0000.0000.0000.0000.0000.2850.0000」46MoleFlowknx)l/hr3565.9903565.9903860.652386.670248.897137.772137.772543.560137.772386.670MassFlowkg/hr90244.26190244.261921

8、48.58