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L30-Energy_Balance_Reactive_System

# L30-Energy_Balance_Reactive_System - Energy Balancein...

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1 Energy Balance- in Reactive System

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2 LEARNING OBJECTIVES By the end of this topic, you should be able to: Performed energy balance for reactive system
3 ENERGY BALANCES ON REACTIVE PROCESSES * ENERGY BALANCES ON REACTIVE PROCESSES * Generally it is the same as the procedures used in solving the energy balances for the non-reactive system: - FLOWCHART! - MATERIAL BALANCES TO DETERMINE STREAM COMPONENTS - REFERENCE STATES - INLET-OUTLET ENTHALPY TABLE - CALCULATE H - SOLVE THE ENERGY BALANCES BY INCORPORATING THE HEAT OF REACTION INTO THE EQUATION

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4 ENERGY BALANCE EQUATION Generally, the energy balance equation for any process unit is given as: Input + Generation - Output - Consumption = Accumulation Enters through system boundaries Produced within system only for reactive system (+) or (-) Leaves through system boundaries Consumed within system only for reactive system Buildup within system only for transient operation
5 EXAMPLE 1 100 mol of propane at 25 100 mol of propane at 25 o C is completely burned in a C is completely burned in a furnace with 20% excess air. The air is fed at 300 furnace with 20% excess air. The air is fed at 300 o C and a C and a flue gases stream at 1000 flue gases stream at 1000 o C is discharged from the

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L30-Energy_Balance_Reactive_System - Energy Balancein...

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