Tulane Gasification Presentation (no backup

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Tulane Gasification Presentation (no backup Powered By Docstoc
					       Solid Fuel Gasification and Syngas
                  Applications
    8th Annual Tulane University Engineering Forum
                      May 9, 2008


                           Larry Bailey
              Eastman Gasification Services Company




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                            About Eastman

    • Founded by George Eastman in
      1920 to supply photographic
      chemicals for Eastman Kodak

    • Became an independent company in 1994

    • Headquartered in Kingsport, TN

    • Global manufacturer of chemicals, plastics and fibers

    • Approximately 11,000 employees worldwide

    • 2007 sales revenue of $6.8 B

    • Pioneer in coal gasification – first commercial U.S.
      coal gasification facility in 1983


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     E A ST M A N                          Chemicals from
                                            Wood (1920)




  A History Based on Use of Domestic Alternative Feedstocks




=Chemicals from Coal (1983)                               Oct 07
                 "Gasification 101"

                            Just the Basics
        C + O2 + H2O                               CO         +     H2
     Carbon + Oxygen + Water                Carbon Monoxide + Hydrogen

    The partial oxidation of carbon to produce a "synthesis" gas or "syngas".
                 Gasification is not combustion (C + O2   CO2).




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               Gasification Basics
                                                 Gasifier Section:
                 Oxygen
                                                 •Controlled chemical reaction
                 (95-99+%)
                                                 •High temperature
                       N2                        •High pressure
                                                 •Short residence time


    Air
                                                 Products (syngas):
                                                 •CO   can adjust             Gas
                               Gasifier          •H2 CO/H2 ratio            Clean-Up
             Air
          Separation           (quench                                       Before
             Unit                type)           By-products:               Product
                                                 •H2S •Ash (slag)             Use!
Carbon Source                                    •CO2 •Steam
(e.g., coal) + Water

           +                                     Quench Zone (quench gasifier only):
                                                 •Gas and molten ash quenched in
                                                 circulating water bath
                                                 •Ash/slag discharged out bottom as
                            Rod Mill
                                          Slag   inert, glassy frit (saleable byproduct)


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    Carbon            Air                Industrial Gasification (IG)
    Source            Separation (ASU)
                                                                                      Capture of
                                                                                CO2
                                                                                      Essentially
                                         Gas Cooling                                    all CO2
       +                            Shift
                                                   Carbon        Mercury
                                                    Beds         Removal
                     O2             Reactor                                            Clean
                                  CO +H2O     CO2 + H2                                Syngas
                                  Water-Gas Shift Reaction                                           Syngas
      H2O                                                                                           Conversion
                                                                                       CO/H2
                                    Particulate
    Quench                          Scrubber                 Acid Gas Removal
    Gasifier                                                   e.g., Rectisol

                                                             Sulfur
                                 Fines
                                                        > 99.9% Deep
                                                        Sulfur Removal
    LockHopper
                                                                                                    Products:
                                                                           Conversion of            Chemicals
                                                                             Carbon into            Fertilizers
                             Non-Leachable                                 Useful Products          Hydrogen
               Slag/Frit   Heavy Metal Removal
                                                                                                       Etc.


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    Solids Handling – Feedstock Slurry Preparation
     (with some gasifiers, can feed as dry solids)




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                                          Eastman Confidential Information
     Shift Reactor Adjusts H2/CO Ratio
                                  Shifted
                                  Syngas




                              CO + H2O         H2 + CO2

                                 Exothermic
    Raw Syngas
                                Shift Reaction




=                                                           Oct 07
                                   Eastman Confidential Information
    AGR Technologies Provide Deep Sulfur Removal
                           (AGR = Acid Gas Removal)
"Clean Syngas"
    CO, H2                 Major Technology Options:
                 Clean
                 Solvent   • MDEA (methyldiethanolamine) – Chemical absorption,
                             98% to 99+% S removal, large CO2 slip, moderate
                             operating temperature, lowest capital cost, often
                             inadequate for chemical production from syngas
                           • Selexol tm (UOP) – Physical absorption, 99+% S
                             removal, variable CO2 slip, higher cost than MDEA
                           • Rectisol tm (Lurgi/Linde) - Physical absorption, 99.5%
                             to 99.9+% S removal, complete CO2 removal possible,
                             similar total cost to Selexol tm, coldest operating temp.
                           • Warm Syngas Cleanup - New technologies (e.g.,
             Dirty           RTI/Eastman) being developed that operate at high
             Solvent         temperatures (> 600 F) and at ppm sulfur levels
                           The H2S recovered from these technologies is
                            further converted to either elemental sulfur (e.g.,
          "Dirty Syngas"
          CO,H2,CO2,H2S     Claus/SCOT) or sulfuric acid.

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    Hg Removal Demonstrated for Almost 25 Years




      Vapor-Phase
    Mercury Removal

       Essentially complete
    mercury removal (> 95%)
    via activated carbon beds




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                                        Eastman Confidential Information
    Eastman's Coal Gasification Facility – Kingsport, TN




=                                                      Oct 07
     Eastman Chemicals from Coal – The Big Picture


     It’s likely you have used a product based
    on coal gasification from Eastman’s facility.




                                 Acetic Anhydride
                                   Acetic Acid
        Coal                        Methanol
                                  Methyl Acetate




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Syngas from Gasification has Multiple Applications




                           Syngas
                                                              Iron
      Fuel
                                                            Reduction
      Gas




        Building Blocks
         for Chemical     Transportation/          Clean Electricity
            Industry      Aviation Fuels
                           (Civilian & Military)




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    Gasification Can Produce Almost Any
        Product Made from Oil or NG




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          Questions?




          We Believe So.

    Eastman – Making It Happen.

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