9- 34c. ±±..QHF==−=×Δ19400 mol H O 18.0 g1 kgkJh1mol10gkgkJ h steam generator233928 104 8134 106afbgReactor C: References:CH v,H g,HOv at600C8881022°²HCdTipvi560600560DCejdi=zfor CH ,CH0 88≈²(,HT) for HH O (interpolating from Table B.8)22Substance(mol h(kJ mol(mol h(kJ molC H2740HOHininoutout022±)²)±)²)....nHnH0178011681990001990015696010 86960119−−−−−−Energy balance :±±±²±².QHnHciiii+−∑∑Δ960 mol C H produced124.5 kJmolCHkJ h reactoroutin561 104This is a poorly designed process as shown. The reactor effluents are cooled to 25DC , and then all but the hydrogen are reheated after separation. Probably less cooling is needed, and in any case provisions for heat exchange should be included in the design. 9.29 a. b. CH OHHCHOH , H12OHO32222→++→(mol CH OH/h)0.42 mol CH OH/molnf(mol/h) at 145°C, 1 atm3reactornsmol H O( )/h20.58 mol air/mol
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