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ENCH 4300—Capstone UT Chattanooga August 14, 2014 Advisor: Dr. Jim Henry Jordan Buecker

Carpet Waste Gasification: Technical, Economic, Environmental Assessment for Carpet Mills An Interim Presentation. ENCH 4300—Capstone UT Chattanooga August 14, 2014 Advisor: Dr. Jim Henry Jordan Buecker Christopher Burns Katharine Davis Hemali Dholakia Kevin O’Brien. Outline.

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ENCH 4300—Capstone UT Chattanooga August 14, 2014 Advisor: Dr. Jim Henry Jordan Buecker

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  1. Carpet Waste Gasification:Technical, Economic, Environmental Assessment for Carpet MillsAn Interim Presentation ENCH 4300—Capstone UT Chattanooga August 14, 2014 Advisor: Dr. Jim Henry Jordan Buecker Christopher Burns Katharine Davis HemaliDholakia Kevin O’Brien

  2. Outline • Problem Statement • Principle of Gasification • Methodology • Proposed Systems • Syngas Uses • Environmental Analysis • Economics • Conclusions

  3. Problem Statement • 250 tons per day of post-consumer carpet (PCC) • Currently pay disposal fees • Reclaim a portion of the chemical energy from the PCC

  4. Problem Statement • PCC has lower heating value of 8,800 Btu/lb • Bituminous coal LHV = 11,000 Btu/lb • Natural gas LHV = 20,000 Btu/lb • Gasification Processes PCC considered • Produce syngas • Syngas LHV = 8,000-12,000 Btu/lb

  5. Principle of Gasification

  6. Methodology • 250 tons/day of post consumer carpet • Carpet composition (wt%)

  7. Methodology Total 79 MM BTU/hr

  8. Methodology • Employed ChemCad modeling software • Material balance • Energy balance

  9. Proposed SystemsAir Gasifier

  10. Proposed SystemsAir Gasifier • N2 presence reduces heating value • Produces NOx

  11. Proposed SystemsO2Gasifier

  12. Proposed SystemsO2Gasifier • Capital increase due to N2 separation • Capital decrease due to volumetric flow from the gasifier

  13. Proposed SystemsSteam Gasifier

  14. Proposed SystemsSteam Gasifier • Lower Temperature • Produces CH4 (higher heating value syngas)

  15. Current Syngas Use Current Syngas Use Exhaust Steam Boiler Air Syngas Plant Use

  16. Potential Syngas Use Exhaust High Pressure Steam Boiler Air Syngas Steam Turbine Condensate Low Pressure Steam Condenser

  17. Potential Syngas Use Low Temp Exhaust High Pressure Steam Boiler Hot Exhaust Steam Turbine Work Gas Turbine Air Work Syngas

  18. Energy Recovery

  19. Pollutants

  20. Interim Conclusions • Technologically and Environmentally Feasible • Economic Analysis will be performed

  21. Questions We Have • What were the strong points? • What can be improved upon? • What can be omitted?

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