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1、采用 aspen 模擬乙醇和水的萃取分離本設(shè)計(jì)乙醇 -水的溫度組成圖1102T-xy diagram for H2O/ETHAN-01100TOTAL TDEW 1.0133 barTOTAL TBUB 1.0133 bar989694C92e90meT8886848280780.000.050.100.150.200.250.300.350.400.450.500.550.600.650.700.750.800.850.900.951.00Liquid/vapor mass fraction, ETHAN-01Sensitivity Results Curve1.0000.995MASS0.

2、9900.9850.9800.975S0.970A0.9650.9600.9550.9500.9450.9400.93520.020.521.021.522.022.523.023.524.024.525.025.526.026.527.027.528.0VARY1 CQT PARAM NSTAGE所以理論塔板數(shù)選24Sensitivity Results Curve1.000MASS0.9980.9960.9940.992S A M0.9900.9880.9860.9840.98215.015.516.016.517.017.518.018.519.019.520.020.521.021.5

3、22.022.523.0VARY1 CQT FEED FEEDSSTAGE故選 20 合適Sensitivity Results Curve1.00MASS0.950.900.850.800.75A0.700.650.600.550.500.451.001.251.501.752.002.252.502.753.003.253.503.754.004.254.504.755.005.255.505.756.006.256.506.757.00VARY1 CQT YEC3 FEEDSSTAGE所以第四塊比較好Sensitivity Results Curve0.999490.99948MASS0

4、.999470.999460.999450.999440.99943SS0.99942A0.999410.999400.999390.999380.999370.999360.999350.999340.800.850.900.951.001.051.101.151.201.251.301.351.401.451.501.551.60VARY1 CQT COL-SPEC MOLE-RR所以回流比取1.2Sensitivity Results Curve0.99985MASS0.999800.999750.99970SS0.99965M0.999600.999550.999500.9994581

5、00820083008400850086008700880089009000910092009300940095009600970098009900100008000VARY1 YEC3 MIXED TOTAL MASSFLOW KG/HR所以可以去8100 ,考慮到回流中可沒能含有水此值應(yīng)大于8100,Sensitivity Results Curve1.000MASS0.9950.9900.9850.9800.975SSM0.9650.9600.9550.9500.9450.9401000150020002500300035004000450050005500600065007000750

6、080008500900095001000010500110001150012000125001300013500140001450015000VARY1 YEC3 MIXED TOTAL MASSFLOW KG/HR由圖紙當(dāng)萃取劑大于9000 是濃度接近于1Sensitivity Results Curve1.00MASS0.950.900.850.80SA 0.75M0.700.650.600.550.502.02.53.03.54.04.55.05.56.06.57.07.58.08.59.09.510.010.511.011.512.012.513.013.514.014.515.01

7、5.516.016.517.017.518.0VARY1 FRAC PARAM NSTAGE選8塊板Sensitivity Results Curve1.0000.9950.9900.9850.9800.975SS0.970M0.9650.9600.9550.9500.945MASS0.9402.252.502.753.003.253.503.754.004.254.504.755.005.255.505.756.006.256.506.757.002.00VARY1 FRAC YEC+S FEEDSSTAGE故選第四塊板作為進(jìn)料版所以常壓下無法達(dá)到99.95%Sensitivity Results Curve1.000MASS0.9950.990SSM0.9800.9750.9700.100.150.200.250.300.350.400.450.500.550.600.650.700.750.800.850.900.951.001.051.101.151.201.251.301.351.401.451.501.551.60VARY1 FRAC COL-SPEC MOLE-RR可見回流比為0.5 后基本上不再變化第一塔塔板,塔徑設(shè)計(jì)可見塔徑 1.8m乙醇出

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