Ethanol is produced commercially by the hydration of ethylene C2H4(g) + H2O(v) → C2H5OH (v) Some of the product is converted to diethyl ether in the undesired side reaction 2C2H5OH(v) ↔(C2H5)2O(v) +...


Ethanol is produced commercially by the hydration of ethylene
C2H4(g) + H2O(v) → C2H5OH (v)
Some of the product is converted to diethyl ether in the undesired side reaction
2C2H5OH(v) ↔(C2H5)2O(v) + H2O(v)
The combined feed to the reactor contains 53.7mole% C2H4, 36.7% H2O and balance nitrogen
which enters the reactor at 310°C. The reactor operates isothermally at 310°C. An ethylene
conversion of 5% is achieved, and the yield of ethanol (moles ethanol produced/mole ethylene
consumed) is 0.9. Calculate the reactor heating or cooling requirement in kJ/mol feed.


C, (NO)=29.5x10-3 +0.8188x10-s T -0.2925x10-8T2+0.3653x10-12T3<br>[kJ/molK]<br>AHE (kJ/mol)<br>NH3<br>-46.19<br>NO<br>90.37<br>C, (kJ/molK)<br>34.31 x10-3+ 5.469x10-ST+0.3661x10-8T2-11x10-12T3<br>29.1 x10-3+ 1.158x10-5T-0.6076x10-8T2+1.311 x10-12T3<br>29 x10-3+ 0.2199x10-ST+0.5723x10-8T2-2.871 x10-12T3<br>AHº (kJ/mol)<br>CH4<br>T(°C)<br>T(°C)<br>T(°C)<br>T(°C)<br>T(°C)<br>T(°C)<br>T(°C)<br>T(°C)<br>T(°C)<br>-74.85<br>02<br>N2<br>НСНО<br>-115.9<br>34.28 x10-3+ 4.268x10-5T-8.694x10-12T3<br>CO2<br>-393.5<br>36.11x10-3 + 4.233x10-5T-2.887x10-8T2<br>H20(v)<br>-241.83<br>33.46 x10-34 0.6880x10-ST+0.7604x10-8T2-3.593x10-12T3<br>C2H5OH<br>-235.31<br>61.34 x10-3+ 15.72x10-ST-8.749x10-8T²+19.83x10-12T3<br>CH3CHO<br>-166.2<br>0.05048+ 1.326X104T-8.050x10$T²+2.380 x10-11T³<br>H2<br>28.84x10-3+0.00765x10-5T+0.3288x10-8T2-0.8698x10-12T3<br>C7H16<br>-187.8<br>0.2427<br>C6HSCH3<br>50<br>94.18 x10-3+ 38x10-5T-27.86x10-8T2+8.033x10-12T3<br>T(°C) |<br>(C2H5)20(1)<br>-272.8<br>0.08945+ 40.33x10-5T-2.244x10-7T2 T(°C)_<br>C2H4<br>52.28<br>40.75 x10-3+ 11.47x10-5T-6.891x10-8T2+17.66x10-12T3<br>C2H40<br>-51<br>-4.69+0.2061T-9.995X10-ST²<br>(J/molK)<br>T(K)<br>H20(1)<br>-285.84<br>Heat of vaporization of diethylether =26.05 kJ/mol<br>Table B.8 Specific Enthalpies of Selected Gases: SI Units<br>À(kJ/mol)<br>Reference state: Gas, Pret = 1 atm, Tref = 25°C<br>Air<br>co<br>CO:<br>H;O<br>-0.72<br>-0.73<br>-0.73<br>-0.72<br>-0.73<br>-0.92<br>-0.84<br>25<br>0.00<br>0.00<br>0.00<br>0.00<br>0.00<br>0.00<br>0.00<br>2.19<br>2.19<br>2.16<br>2.54<br>6.01<br>9.57<br>13.23<br>100<br>2.24<br>2.19<br>2.90<br>200<br>5.15<br>5.31<br>8.47<br>5.13<br>5.06<br>5.16<br>7.08<br>300<br>8.17<br>8.12<br>7.96<br>8.17<br>11.58<br>400<br>11.24<br>11.72<br>11.15<br>10.89<br>11.25<br>16.35<br>500<br>14.37<br>15.03<br>14.24<br>13.83<br>14.38<br>21.34<br>17.01<br>600<br>17.55<br>18.41<br>17.39<br>16.81<br>17.57<br>26.53<br>20.91<br>20.59<br>23.86<br>27.19<br>30.56<br>19.81<br>22.85<br>700<br>20.80<br>21.86<br>20.82<br>31.88<br>24.92<br>29.05<br>33.32<br>37.69<br>800<br>24.10<br>25.35<br>24.13<br>37.36<br>900<br>27.46<br>25.93<br>28.89<br>32.47<br>27.49<br>42.94<br>1000<br>30.86<br>29.04<br>30.91<br>48.60<br>1100<br>34.31<br>36.07<br>33.99<br>32.19<br>34.37<br>54.33<br>42.18<br>35.39<br>37.81<br>41.34<br>1200<br>39.70<br>37.46<br>37.87<br>60.14<br>46.78<br>1300<br>43.38<br>47.07<br>40.97<br>38.62<br>41.40<br>65.98<br>51.47<br>56.25<br>61.09<br>1400<br>44.89<br>44.51<br>41.90<br>44.95<br>71.89<br>1500<br>48.45<br>50.77<br>48.06<br>45.22<br>48.51<br>77.84<br>

Extracted text: C, (NO)=29.5x10-3 +0.8188x10-s T -0.2925x10-8T2+0.3653x10-12T3 [kJ/molK] AHE (kJ/mol) NH3 -46.19 NO 90.37 C, (kJ/molK) 34.31 x10-3+ 5.469x10-ST+0.3661x10-8T2-11x10-12T3 29.1 x10-3+ 1.158x10-5T-0.6076x10-8T2+1.311 x10-12T3 29 x10-3+ 0.2199x10-ST+0.5723x10-8T2-2.871 x10-12T3 AHº (kJ/mol) CH4 T(°C) T(°C) T(°C) T(°C) T(°C) T(°C) T(°C) T(°C) T(°C) -74.85 02 N2 НСНО -115.9 34.28 x10-3+ 4.268x10-5T-8.694x10-12T3 CO2 -393.5 36.11x10-3 + 4.233x10-5T-2.887x10-8T2 H20(v) -241.83 33.46 x10-34 0.6880x10-ST+0.7604x10-8T2-3.593x10-12T3 C2H5OH -235.31 61.34 x10-3+ 15.72x10-ST-8.749x10-8T²+19.83x10-12T3 CH3CHO -166.2 0.05048+ 1.326X104T-8.050x10$T²+2.380 x10-11T³ H2 28.84x10-3+0.00765x10-5T+0.3288x10-8T2-0.8698x10-12T3 C7H16 -187.8 0.2427 C6HSCH3 50 94.18 x10-3+ 38x10-5T-27.86x10-8T2+8.033x10-12T3 T(°C) | (C2H5)20(1) -272.8 0.08945+ 40.33x10-5T-2.244x10-7T2 T(°C)_ C2H4 52.28 40.75 x10-3+ 11.47x10-5T-6.891x10-8T2+17.66x10-12T3 C2H40 -51 -4.69+0.2061T-9.995X10-ST² (J/molK) T(K) H20(1) -285.84 Heat of vaporization of diethylether =26.05 kJ/mol Table B.8 Specific Enthalpies of Selected Gases: SI Units À(kJ/mol) Reference state: Gas, Pret = 1 atm, Tref = 25°C Air co CO: H;O -0.72 -0.73 -0.73 -0.72 -0.73 -0.92 -0.84 25 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2.19 2.19 2.16 2.54 6.01 9.57 13.23 100 2.24 2.19 2.90 200 5.15 5.31 8.47 5.13 5.06 5.16 7.08 300 8.17 8.12 7.96 8.17 11.58 400 11.24 11.72 11.15 10.89 11.25 16.35 500 14.37 15.03 14.24 13.83 14.38 21.34 17.01 600 17.55 18.41 17.39 16.81 17.57 26.53 20.91 20.59 23.86 27.19 30.56 19.81 22.85 700 20.80 21.86 20.82 31.88 24.92 29.05 33.32 37.69 800 24.10 25.35 24.13 37.36 900 27.46 25.93 28.89 32.47 27.49 42.94 1000 30.86 29.04 30.91 48.60 1100 34.31 36.07 33.99 32.19 34.37 54.33 42.18 35.39 37.81 41.34 1200 39.70 37.46 37.87 60.14 46.78 1300 43.38 47.07 40.97 38.62 41.40 65.98 51.47 56.25 61.09 1400 44.89 44.51 41.90 44.95 71.89 1500 48.45 50.77 48.06 45.22 48.51 77.84
Jun 11, 2022
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