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The switch grass is fed to the 1200C solar thermal reactor. At these temperatures, biomass can be converted to CO and H2, that is, syn
The switch grass is fed to the 1200C solar thermal reactor. At these temperatures, biomass can be converted to CO and H2, that is, syn gas, which then can be used for liquid fuels. Switch grass, which is approximately %/s cellulose (C6H10O5) and 1/3 lignin (C10H12O3) will be fed with steam to produce CO,H22 and a small amount of ash, which we will neglect. In order to simplify this process into a tractable home problem, we assume the switch grass is volatilized immediately upon entering the plug-flow reactor and that the reactions and postulated rate laws are (1) Cellulose: C6H50O5(C)+H2O(W)6H2+6CO (2) Lignin: C30H12O3(L)+7H2O(W)13H2+10CO (AIChE J., 55, 286 (2009)). Also see Science, 326, 1472 (2009) The rate laws and constants are hypothesized to be r1C=k1CCCCWr2L=k2LCLCW2 With k1C=3104(maldm3)/s and k2L=1.4107(moldm5)/s Total gas concentration in the feed and reactor with CTa=KT0P0=(0.082)(1473)1atm=0.00828mol/dm3 with the entering molar flow rates of cellulose, lignin, and water are FCo=0.00411mol/s and FL0=0.00185 mol/s,FWo0=0.02mol/s, respectively. 1. Plot and analyze the molar fiow rates as a function of PFR volume up to V=0.417 dim 9. 2. Plot and analyze YC,,YW,YL and SSC/H2 down the reactor. Describe what you find. 3. Repeat (a) for cifferent molar flow rates of woter
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