CHEN 4460 – Process Synthesis, Simulation and Optimization Dr. Mario Richard Eden Department of Chemical Engineering Auburn University Lab Lecture No.

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Presentation transcript:

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 October 30, 2006 Heat and Power Integration

Example 1 Given the stream information below, design the MER network StreamTsTs TtTt Cp [kW/ o C]  T min = 10 o C

Example 1 – Solution  T min = 10 o C StreamTsTs TtTt Cp [kW/ o C] Temperature Driving Force T H - Δ T

Example 1 – Solution  T min = 10 o C StreamTsTs TtTt Cp [kW/ o C] Temperature Driving Force T H - Δ T IntervalTiTi T i -T i+1  Cp H -  Cp C ΔHiΔHi

Example 1 – Solution  T min = 10 o C StreamTsTs TtTt Cp [kW/ o C] Temperature Driving Force T H - Δ T IntervalTiTi T i -T i+1  Cp H -  Cp C ΔHiΔHi

Example 1 – Solution  T min = 10 o C StreamTsTs TtTt Cp [kW/ o C] Temperature Driving Force T H - Δ T IntervalTiTi T i -T i+1  Cp H -  Cp C ΔHiΔHi = = = =

Example 1 – Solution  T min = 10 o C StreamTsTs TtTt Cp [kW/ o C] Temperature Driving Force T H - Δ T IntervalTiTi T i -T i+1  Cp H -  Cp C ΔHiΔHi = = = =

Example 1 – Solution Enthalpy Cascade Diagram T Cold pinch : 140 Q H min : 60 Q C min : 225

Example 1 – Solution HEN Grid Diagram o C 150 o C 180 o C 105 o C30 o C 60 o C 40 o C Cp 140 o C 150 o C 140 o C 150 o C T Cold pinch : 140 Q H min : 60 Q C min : 225

Example 1 – Solution HEN Grid Diagram T Cold pinch : 140 Q H min : 60 Q C min : o C 150 o C 180 o C 105 o C30 o C 60 o C 40 o C Cp 140 o C 150 o C 140 o C 105 o C 150 o C

Example 1 – Solution HEN Grid Diagram T Cold pinch : 140 Q H min : 60 Q C min : o C 150 o C 180 o C 105 o C30 o C 60 o C 40 o C Cp 140 o C 150 o C 140 o C 105 o C 150 o C 60 kW 160 o C H 60 kW

Example 1 – Solution HEN Grid Diagram T Cold pinch : 140 Q H min : 60 Q C min : o C 150 o C 180 o C 105 o C30 o C 60 o C 40 o C Cp 140 o C 150 o C 140 o C 105 o C 150 o C 60 kW 160 o C 60 kW 240 kW 195 kW C 200 kW H 90 o C 52.5 o C C 25 kW

Example 2 Given the stream information below, design the MER network StreamTsTs TtTt Cp [kW/ o C]  T min = 10 o C

Example 2 – Solution  T min = 10 o C Temperature Driving Force T H - Δ T StreamTsTs TtTt Cp [kW/ o C]

Example 2 – Solution StreamTsTs TtTt Cp [kW/ o C] IntervalTiTi T i -T i+1  Cp H -  Cp C ΔHiΔHi  T min = 10 o C Temperature Driving Force T H - Δ T

Example 2 – Solution StreamTsTs TtTt Cp [kW/ o C] IntervalTiTi T i -T i+1  Cp H -  Cp C ΔHiΔHi  T min = 10 o C Temperature Driving Force T H - Δ T

Example 2 – Solution StreamTsTs TtTt Cp [kW/ o C] IntervalTiTi T i -T i+1  Cp H -  Cp C ΔHiΔHi = = = =  T min = 10 o C Temperature Driving Force T H - Δ T

Example 2 – Solution StreamTsTs TtTt Cp [kW/ o C] IntervalTiTi T i -T i+1  Cp H -  Cp C ΔHiΔHi = = = =  T min = 10 o C Temperature Driving Force T H - Δ T

Example 2 – Solution Enthalpy Cascade Diagram T Cold pinch : 80 Q H min : 80 Q C min : 50

Example 2 – Solution HEN Grid Diagram T Cold pinch : 80 Q H min : 80 Q C min : o C 150 o C 135 o C 140 o C80 o C 30 o C 60 o C Cp 80 o C 90 o C 80 o C 90 o C

Example 2 – Solution HEN Grid Diagram T Cold pinch : 80 Q H min : 80 Q C min : o C 90 o C 80 o C 90 o C 80 o C 30 o C 60 o C Cp 180 o C 150 o C 135 o C 140 o C

Example 2 – Solution HEN Grid Diagram T Cold pinch : 80 Q H min : 80 Q C min : kW 134 o C H 30 kW 80 o C 90 o C 80 o C 90 o C 80 o C 30 o C 60 o C Cp 60 kW 110 o C H 50 kW 180 o C 150 o C 135 o C 140 o C

Example 2 – Solution HEN Grid Diagram T Cold pinch : 80 Q H min : 80 Q C min : kW 134 o C H 30 kW 80 o C 90 o C 80 o C 90 o C 80 o C 30 o C 60 o C Cp 60 kW 110 o C H 50 kW 90 kW 35 o C 10 kW 80 o C C 50 kW 180 o C 150 o C 135 o C 140 o C