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A process for converting glycerol to the industrially important specialty chemical intermediates acrolein, C3H40, and hydroxyacetone (acetol), C3H6O2, has been proposed. C3H8O3-C3H40 + 2 H2O
A process for converting glycerol to the industrially important specialty chemical intermediates acrolein, C3H40, and hydroxyacetone (acetol), C3H6O2, has been proposed. C3H8O3-C3H40 + 2 H2O C3H303 C3H.O2 +H2O The reactions take place in the vapor phase at 400.0C in a fixed bed, isothermal reactor over an acid catalyst. The feed to the reactor is a vapor stream at 400.0C containing 25.0 mol% glycerol, 35.0% water, and the balance nitrogen. All of the glycerol is consumed in the reactor, and the product stream contains acrolein and hydroxyacetone in a 9.00:1 mole ratio. Data for the process species are shown below. Species A H (kJ/mol) Cp [kJ/mol C)] glycerol(v) -620 0.1745 acrolein(v) -65 0.0762 hydroxyacetone(v) -372 0.1096 water(v) -242 0.0340 nitrogen(v) 0.0 0.0291 Assume a basis of 100 mol fed to the reactor, and draw and completely label a flowchart. Carry out a degree-of-freedom analysis assuming that you will use extents of reaction for the material balances. Then calculate the molar amounts of all input and output species. Fill in the table below. Species Input n(mol) Output n (mol) glycerol(v) 25.0 0 acrolein(v) 0 22.5 hydroxyacetonelv) 0 2.50 water(v) 35.0 82.5 nitrogen(v) 40.0 40.0 Calculate the total heat added to or removed from the reactor (state which it is), using the constant heat capacities given in the above table. IQI = i = kJ to the reactor
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