EXAMPLE #2: HEAT MANAGEMENT USING A DILUENT Reaction :A->B. AHr= 50.000 BTU/b-mol 25 BTU1b-moL-F Make 100 mohrofB: @r=5.0 MM BTU/r Let Fa=feed rate ofa Fd=feed rate of diluent Conversion Fa Fd ATadiabatic(F) 0.25000 400 0.l10000 200 0.0250000 0.110004000 40 0.25004500 40 Use diluent if cheaper and if there is a purge loss. If flow rate is too high, go to cooling 11/29/99 Recycle structure11/29/99 Recycle Structure 6 EXAMPLE #2: HEAT MANAGEMENT USING A DILUENT Reaction: A --> B, DHr = 50,000 BTU/lb-mol Cp = 25 BTU/lb-mol-F Make 100 mol/hr of B: Qr = 5.0 MM BTU/hr Let Fa = feed rate of A Fd = feed rate of diluent Conversion Fa Fd DTadiabatic (F) 0.2 500 0 400 0.1 1000 0 200 0.02 5000 0 40 0.1 1000 4000 40 0.2 500 4500 40 Use diluent if cheaper and if there is a purge loss. If flow rate is too high, go to cooling