Hydrogen production by ethanol steam reforming

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					Hydrogen production by ethanol
      steam reforming
       PhD student: José Antonio Torres
         Supervisor: Daniel Montané
          Wood Biopolymers Group
Presentation outline

           • Introduction
              – Motivation
              – Overall Objective
           • Research scope
              – Catalyst preparation &
                 characterization
              – Reactor engineering
           • Workplan
              – Project stages and work
                 packages
Presentation outline

           • Introduction
              – Motivation
              – Overall Objective
           • Research scope
              – Catalyst preparation &
                characterization
              – Reactor engineering
           • Workplan
              – Project stages and work
                packages
                                                                                  600




                                            CO2 Atmospheric concentration [ppm]
 Where the problem                                                                500


                                                                                  400

 came from                                                                        300


                                                                                  200

• Environmental problems                                                          100

   – Atmospheric pollution                                                             0

   – Greenhouse effect
                                                                                               until 1900           1900-2000           2000-2050
                                                                                                                 Historic Periods




                                                                                  25


• Global dependency on fossil fuels                                               20




                                      Million barrels per day
   – Fair balance between:                                                        15


                                                                                  10
         limited        increasing
           oil              oil                                                   5
        reserves       consumption
                                                                                  0
                                                                                           1     2      3       4     5     6       7    8    9     10
                                                                                                                      Top ten


                                                                                                            Oil Producers   Oil Consumers
Generating solutions

• Desired characteristics
   –   Renewable energy source
   –   Easy to: produce, store and transport
   –   Widely available
   –   Environmentally friendly
   –   Reasonable cost is a MUST

                         Major improve
                         in the technology for
                         producing energy
Deciding the course of action


                 Reactor
                            H2
       Biomass                       Fuel Cell       Energy
                 Module


  Catalytic                                      High
  Reaction           15%                         efficiency



                                 85%


                       SR   Others
Objective

                              H2
 H2O       Reactor          Separation
Ethanol    Module

H2O
          Combustion
CO2
                       Steam reforming reaction
                       C2H5OH+3H2O                2CO2+6H2
                          DHr=173.1 kJ/mol
Presentation outline

           • Introduction
              – Motivation
              – Overall Objective
           • Research scope
             – Catalyst preparation &
               characterization
             – Reactor engineering
           • Workplan
             – Project stages and work
               packages
Catalytic reactor scopes

             Micro: Catalyst



  Levels     Meso: Reactor



             Macro: Process
Catalyst preparation & characterization




 Product characteristics   Knowledge required   Performance on
                             Engineering
   Longevity/Strength                            •Activity
                             Materials           •Selectivity
   High Surface Area         Science             •Stability
      Active Phase           Chemistry
Reactor design

                          Packed Bed


   Configurations

                          Monolith




              Performance on
              •Reaction kinetics
              •Hydrodynamics/Pressure drop
              •Mass/heat transfer
Presentation outline

           • Introduction
              – Motivation
              – Overall Objective
           • Research scope
              – Catalyst preparation &
                 characterization
              – Reactor engineering
           • Workplan
             – Project stages and work
               packages
 Project stages and work packages
       Start


     Prepare the
     packed bed
       reactor
                                                                 Perform
                            No             Analyze             experiments
                                         performance

Is the experimental
equipment working                                                                   Look for
                                                                 Analyze
   appropriately?                                                                   variations
                                                               performance
                                    No   Is the catalyst
                      Prepare the
                                           adequate?
                        catalyst
               Yes                                                                          No

                                                           Is the monolith giving
                                                            satisfactory results?
                                                   Yes
    Perform an
 experimental test

                                                                        Yes
                                         Prepare the
                                          monolith                Report
                                                                 findings

				
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posted:6/13/2012
language:English
pages:13