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Carpet Waste Gasification: Carpet Waste Gasification: Technical, Economic, Environmental Assessment for Carpet Mills An Interim Presentation ENCH 4300—Capstone.

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Presentation on theme: "Carpet Waste Gasification: Carpet Waste Gasification: Technical, Economic, Environmental Assessment for Carpet Mills An Interim Presentation ENCH 4300—Capstone."— Presentation transcript:

1 Carpet Waste Gasification: Carpet Waste Gasification: Technical, Economic, Environmental Assessment for Carpet Mills An Interim Presentation ENCH 4300—Capstone UT Chattanooga April 26, 2015 Advisor: Dr. Jim Henry Jordan Buecker Christopher Burns Katharine Davis Hemali Dholakia 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 o Bituminous coal LHV = 11,000 Btu/lb o Natural gas LHV = 20,000 Btu/lb Gasification Processes PCC considered o 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%) ComponentPercentage of Carpet (wt%) Percentage removed pre-gasification (wt%) Polypropylene (PP)17 Calcium Carbonate (CaCO 3 ) 3580 Polyethylene Terephtalate (PET) 6 Nylon 6 (N 6)17100 Nylon 6,6 (N 6,6)14 Styrene Butadiene Rubber (SBR) 11

7 Methodology MaterialHeat of Combustion (BTU/lb) Flowrate (lb/hr)MMBTU/hr PP CaCO PET SBR N Total 79 MM BTU/hr

8 Methodology Employed ChemCad modeling software Material balance Energy balance

9 Proposed Systems Air Gasifier

10 N 2 presence reduces heating value Produces NO x

11 Proposed Systems O 2 Gasifier

12 Capital increase due to N 2 separation Capital decrease due to volumetric flow from the gasifier

13 Proposed Systems Steam Gasifier

14 Lower Temperature Produces CH 4 (higher heating value syngas)

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

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

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

18 Energy Recovery Gasifier MM BTU/h BTU/lb PCCW Air O Steam353500

19 Pollutants Gasifierlb/h CO2 lb CO2/MM BTU Coal comparelb/h NOx Coal compare Air %300-14% O %negligible Steam %negligible

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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