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Heat and Power Integration. CHEN 4460 – Process Synthesis, Simulation and Optimization Dr. Mario Richard Eden Department of Chemical Engineering Auburn University Lab Lecture No. 6 – Heat and Power Integration November 6, 2012. Example 1.
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Heat and Power Integration CHEN 4460 – Process Synthesis, Simulation and Optimization Dr. Mario Richard EdenDepartment of Chemical EngineeringAuburn University Lab Lecture No. 6 – Heat and Power Integration November 6, 2012
Example 1 • Given the stream information below, design the MER network Tmin = 10 oC
Example 1 – Solution Tmin = 10 oC Temperature Driving ForceTH-ΔT
Example 1 – Solution Tmin = 10 oC Temperature Driving ForceTH-ΔT
Example 1 – Solution Tmin = 10 oC Temperature Driving ForceTH-ΔT
Example 1 – Solution Tmin = 10 oC Temperature Driving ForceTH-ΔT
Example 1 – Solution Tmin = 10 oC Temperature Driving ForceTH-ΔT
Example 1 – Solution • Enthalpy Cascade Diagram T Cold pinch : 140 QH min : 60 QC min: 225
Cp 150oC 150oC 180oC 1 40oC 2 150oC 150oC 150oC 2 40oC 4 140oC 140oC 180oC 3 60oC 3 140oC 140oC 105oC 4 30oC 2.6 Example 1 – Solution • HEN Grid Diagram T Cold pinch : 140 QH min : 60 QC min: 225
Example 1 – Solution • HEN Grid Diagram Cp 150oC 150oC 180oC 1 40oC 2 150oC 150oC 150oC 2 40oC 4 140oC 140oC 180oC 3 60oC 3 140oC 105oC 105oC 4 30oC 2.6 T Cold pinch : 140 QH min : 60 QC min: 225
60 kW 60 kW H Example 1 – Solution • HEN Grid Diagram Cp 150oC 150oC 180oC 1 40oC 2 150oC 150oC 150oC 2 40oC 4 160oC 140oC 140oC 180oC 3 60oC 3 140oC 105oC 105oC 4 30oC 2.6 T Cold pinch : 140 QH min : 60 QC min: 225
25 kW C 240 kW 200 kW C 195 kW Example 1 – Solution • HEN Grid Diagram Cp 60 kW 52.5oC 150oC 150oC 180oC 1 40oC 2 150oC 150oC 90oC 150oC 2 40oC 4 60 kW 160oC 140oC 140oC 180oC H 3 60oC 3 140oC 105oC 105oC 4 30oC 2.6 T Cold pinch : 140 QH min : 60 QC min: 225
Example 2 • Given the stream information below, design the MER network Tmin = 10 oC
Example 2 – Solution Tmin = 10 oC Temperature Driving ForceTH-ΔT
Example 2 – Solution Tmin = 10 oC Temperature Driving ForceTH-ΔT
Example 2 – Solution Tmin = 10 oC Temperature Driving ForceTH-ΔT
Example 2 – Solution Tmin = 10 oC Temperature Driving ForceTH-ΔT
Example 2 – Solution Tmin = 10 oC Temperature Driving ForceTH-ΔT
Example 2 – Solution • Temperature Interval Diagram
Example 2 – Solution • Enthalpy Cascade Diagram T Cold pinch : 80 QH min : 80 QC min: 50
Example 2 – Solution • HEN Grid Diagram Cp 90oC 90oC 180oC 1 60oC 3 90oC 90oC 150oC 2 30oC 1 80oC 80oC 135oC 3 30oC 2 80oC 80oC 140oC 4 80oC 5 T Cold pinch : 80 QH min : 80 QC min: 50
Example 2 – Solution • HEN Grid Diagram Cp 90oC 90oC 180oC 1 60oC 3 90oC 90oC 150oC 2 30oC 1 80oC 80oC 135oC 3 30oC 2 80oC 80oC 140oC 4 80oC 5 T Cold pinch : 80 QH min : 80 QC min: 50
270 kW 60 kW 50 kW 30 kW H H Example 2 – Solution • HEN Grid Diagram Cp 90oC 90oC 180oC 1 60oC 3 90oC 90oC 150oC 2 30oC 1 110oC 80oC 80oC 135oC 3 30oC 2 134oC 80oC 80oC 140oC 4 80oC 5 T Cold pinch : 80 QH min : 80 QC min: 50
270 kW 90 kW 60 kW 10 kW 50 kW 50 kW 30 kW H C H Example 2 – Solution • HEN Grid Diagram Cp 90oC 90oC 180oC 1 60oC 3 80oC 90oC 90oC 150oC 2 30oC 1 35oC 110oC 80oC 80oC 135oC 3 30oC 2 134oC 80oC 80oC 140oC 4 80oC 5 T Cold pinch : 80 QH min : 80 QC min: 50