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“Garbage to Gas” Team Bravo Mentor Eleftherios Avtzis David Garcia

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Presentation on theme: "“Garbage to Gas” Team Bravo Mentor Eleftherios Avtzis David Garcia"— Presentation transcript:

1 “Garbage to Gas” Team Bravo Mentor Eleftherios Avtzis David Garcia
Bryan Isles Zack Labaschin Alena Nguyen Mentor Dan Rusinak Che Team Bravo

2 Municipal Solid Waste EPA 2008 report on MSW generation
Approximately 250 million tons of MSW generated by Americans in 2008 ~33.2% is recycled and composited (83 million tons) Approximately 4.5 pounds of MSW generated per person per day 1.5 pounds of the 4.5 is recycled and composited. Che Team Bravo

3 Municipal Solid Waste Che Team Bravo

4 Why MSW? Renewable Energy Source Helps the Environment (CH4 emissions)
Cost effective Transportation Reduction Located near cities and existing infrastructure Che Team Bravo

5 Disadvantages of MSW Preparation of feedstock
A lower heating value than conventional feedstocks Higher Ash content than conventional feedstocks Che Team Bravo

6 Design Basis Commercial Scale Production
2500 metric tonnes per day MSW  1800 metric tonnes per day Syngas Landfill choice Location Proximity to City Water Sources Size and expansion

7 Design Basis River Bend Prairie Landfill 88 Acres
20 Acres of expansion Access to MSW of Chicago Rail and River access Residential Limited Expansion

8 Design Basis Newton County Landfill 265 Acres Room for expansion
Access to MSW of South Chicago Transportation No river access

9 Design Basis Environmental Review Positives
Removal of MSW from local landfill (75% of 2500 metric tonnes per day low end value enter gasification processing) Gasification by-products are captured and properly stored (no venting into atmospheres) Negatives 400 million lbs of hazardous waste per year (mostly ash) 100,000 lbs will need relocation (cannot be further utilized)

10 Design Basis Industrial Standard Review
Clean Syngas produced in 2.05 ratio H2/CO for use by chemical production Clear Statement of Feedstock MSW from landfills Return to landfill includes: glass, appliances, paints or oils Metal will be recycled

11 BFD Che Team Bravo

12 MSW to RDF MSW – municipal solid waste in
Sorting – removal of recycle metals and other rejects Screening procedures Shredding and drying RDF – Refuse Derived Fuel out

13 Gasification Reactions
C is a carbon containing compound C + ½ O2  CO :: MJ/kmol Char reacts with CO2 and steam C + H2O  CO + H2 :: MJ/kmol CO + ½ O2  CO2 :: MJ/kmol H2 + ½ O2  H2O :: MJ/kmol Che Team Bravo

14 Water-Gas Shift Reaction
CO + H2O  CO2 + H2 :: - 41 MJ/kmol Slightly exothermic Required to achieve syngas ratio of 2.05 Great opportunity for heat recovery Che Team Bravo

15 TBE Gasification Process

16 Disadvantages of Other Processes
High pressure/Energy intensive Lower quality raw syngas Air or oxygen requirements Poor scale up Unproven technology

17 Advantages of TBE Process
Low pressure Relatively low temperature Efficient ash removal Indirect gasification Residence time less than one second

18 References Municipal Solid Waste (MSW) to Liquid Fuels Synthesis, Volume 1: Availability of Feedstock and Technology (PNNL-18144) Municipal Solid Waste (MSW) to Liquid Fuels Synthesis, Volume 2: A Techno-economic Evaluation of the Production of Mixed Alcohols (PNNL-18482) - TBE - Rentech Municipal Solid waste Generation, Recycling, and Disposal in the United States: Facts and Figures for 2008 – EPA Higman, Christopher and van der Burgt, Maarten. Gasification 2nd Edition. Gulf Professional Publishing. Oxford, 2008.

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