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process_simulation_by_aspen_plus

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									Process Simulation by
     Aspen Plus
Process Simulators
 Sequential Modular Approach (1960-70s)
  • Flexible Flowsheet from M. W. Kellogg Corp. in
    1958
  • ASPEN PLUS from Aspen Technology, Inc.
  • PRO/II from Simulation Sciences, Inc.
  • HYSYS from Hyprotech, Ltd.
 Equation Oriented Approach (1980-90s)
  • SPEEDUP from Aspen Technology, Inc.




                                                     2
Example
 Aspen Plus Bioethanol from Corn Model




                                          3
Production of Fuel
  Grade Ethanol
Distillation
 T-xy Diagram




                 5
Azeotropic Distillation
(Seider et al., 2009)




                          6
Pressure Swing Adsorption
(Pruksathorn and Vitidsant, 2009)




                                    7
Pressure Swing Distillation




                D1                     D2




          C-1                    C-2
                            F2
      F




                      P-1
                 B1                    B2




                                            8
Carbon Capture
  Technology
Kyoto Protocol
 1997-12-11 Adopted
 2005-02-16 Entered into Force
 2009-06




                                  10
Global Warming




                 11
Global Warming Caused by CO2?




                                12
CO2 Absorption by MEA
 Reactions
 2 H2O ↔ H3O+ + OH-
 CO2 + 2 H2O ↔ HCO3- + H3O+
 HCO3- + H2O ↔ H3O+ + CO3-2
 MEA + H3O+ ↔ MEAH+ + H2O
 MEA + HCO3- ↔ MEACOO- + H2O

 where
 MEA = C2H7NO (monoethanolamine)
 MEAH+ = C2H8NO+
 MEACOO- = C3H6NO3-



                                   13
CO2 Absorption by MEA
 Absorber-Stripper Process

           T REAT ED
                                                                                                 CO2


                                        LEAN-C

    MEA
                                                     COOLER
                          PUM P2
                                                            LEAN-X




                         ABSORBER                                                                STRIPPER
                                                                     RICH-X             RICH-H



                                            RICH-P     HX                     HEATER




    FEED
                       RICH

                                                                                       LEAN

                                   PUM P1




                                                                                                            14

								
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