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

Published byXavier Stevison Modified over 9 years ago

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

1 Carpet Waste Gasification: Technical, Economic, Environmental Assessment for Carpet Mills An Interim Presentation ENCH 4300—Capstone UT Chattanooga Jordan Buecker April 12, 2017 Christopher Burns Advisor: Dr. Jim Henry 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
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 Percentage of Carpet (wt%) Percentage removed pre-gasification (wt%)
Methodology 250 tons/day of post consumer carpet Carpet composition (wt%) Component Percentage of Carpet (wt%) Percentage removed pre-gasification (wt%) Polypropylene (PP) 17 Calcium Carbonate (CaCO3) 35 80 Polyethylene Terephtalate (PET) 6 Nylon 6 (N 6) 100 Nylon 6,6 (N 6,6) 14 Styrene Butadiene Rubber (SBR) 11

7 Methodology PP -18600 1700 -32 CaCO3 800 700 0.6 PET -9500 630 -6 SBR
Material Heat of Combustion (BTU/lb) Flowrate (lb/hr) MMBTU/hr PP -18600 1700 -32 CaCO3 800 700 0.6 PET -9500 630 -6 SBR -18900 1100 -21 N66 -13800 1400 -19 Total 79 MM BTU/hr

8 Methodology Employed ChemCad modeling software Material balance
Energy balance

9 Proposed Systems Air Gasifier

10 Proposed Systems Air Gasifier
N2 presence reduces heating value Produces NOx

11 Proposed Systems O2 Gasifier

12 Proposed Systems O2 Gasifier
Capital increase due to N2 separation Capital decrease due to volumetric flow from the gasifier

13 Proposed Systems Steam Gasifier

14 Proposed Systems Steam Gasifier
Lower Temperature Produces CH4 (higher heating value syngas)

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

16 Potential Syngas Use Exhaust High Pressure Steam Air Boiler 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 Gasifier MM BTU/h BTU/lb PCCW Air 58 5800 O2 Steam 35
3500

19 Pollutants Air 14000 240 13% 300 -14% O2 negligible Steam 11000 310
Gasifier lb/h CO2 lb CO2/MM BTU Coal compare lb/h NOx Air 14000 240 13% 300 -14% O2 negligible Steam 11000 310 48%

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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