Organic Waste Fuels Vehicle Fleet in Sacramento
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Transcript of Organic Waste Fuels Vehicle Fleet in Sacramento
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Building lifetime relationships with our clients and employees.
Organic Waste Fuels Vehicle Fleet in Sacramento
Omni ResortJune 24. 2014
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• Convert Food Waste to energy (fuel) and fertilizer.
• Divert organics from landfill
• Produce Low Carbon CNG Vehicle Fuel
Project Overview
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Project Background
South Area Transfer Station Sacramento, CA
Unused siteSacramento County RFPClean World and Atlas Disposal were awarded the project BioCNG selected for biogas to vehicle fuel upgrading
Public-private partnership• Clean World owns and operates the digester• Atlas Disposal owns the CNG fueling station
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SATS Site
Before After
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Feedstocks
Source-separated organicsOff-spec. packaged food25 Tons per day- recently expanded to 100 TPD capacity
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Pre-processing Technology
DODA System
• Removes Contaminants
• Grinds and slurries wastes
• De-packages off-spec food.
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Anaerobic Digestion Process
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Anaerobic Phased Solids
• Separate hydrolysis and methane formation
• 3 tank system
• Thermophilic temperature
• High Solids ( 25%) Capability
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Biogas to Vehicle Fuel
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Biogas/Vehicle Fuel Benefits
• Significant savings over gasoline and diesel
• Lock in future fuel cost long term
•“Greenest” fuel resulting in a significant carbon footprint reduction
• Complies with CNG fuel specs and engine warranties
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Biogas Treatment Requirements/Considerations
Hydrogen Sulfide Removal
Gas Compression
Moisture Removal
Siloxane/VOC Removal
Carbon Dioxide Removal
Fuel Requirements:• Engine Manufacturers Specifications, SAE J1616
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Skid-mounted BioCNG 100Currently handling 50-75 scfm Produces the equivalent of 330 to 400 gallons of diesel fuel per day* Phase 2 increases production up to 1,400 DGE
*All biogas produced by the Clean World digester is currently being processedfor vehicle fuel.
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Package Engine Generator
• Operates in parallel with vehicle fuel production
• Includes gas conditioning
• A portion of waste gas from fuel production will go to the generator.
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CNG Fueling Station
250 psig “buffer” storage
4,500 psig CNG storage
Fast-fill dispensers
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Diesel CNG RNG-Landfill RNG- Dry AD RNG- Wet AD RNG-WWTP*-80
-60
-40
-20
0
20
40
60
80
100
120
95
75
13
-15
-48
-65
Carbon Intensity for Fuels and Renewable SubstitutegCO2e/MJ
Fuel Type and Pathway
Carb
on In
tens
ity
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5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 45,000 50,0000
50
100
150
200
250
300
Diesel
BioCNG
Miles Driven (x1000)
CO
2e E
mis
sion
s (to
ns)
Garbage Truck
Municipal Sweeper
Transit Buses
Regional Freight Truck
Bio-CNG v. Diesel Emission Reductions 10 garbage trucks converted from diesel to Bio-CNG – reduce 1,000+ tons CO2e annually
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Federal Renewable Fuel Standard Credits• Renewable Identification Numbers (RINs)
• Means to track, register and monetize environmental attributes of alternative vehicle fuels
• Available through 2022
• Direct payment from producers– not a tax credit
• The Advanced Biofuel (D-5) RIN is currently trading
at $0.52= $0.87/ DGE
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California Low Carbon Fuel Standard
• CARB digester pathway= -15g/MJ carbon intensity• Compared to diesel net carbon credit 110g/MJ
• $40/ton CO2=$ 4.64/decatherm (MMBtu)
• $0.60/ DGE
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A Success Story
A Productive Partnership
Clean World
Atlas Disposal
BioCNG
Advanced Technology
A Growing Business
Multiple Environmental Benefits
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Thank YouJay Kemp, PE, BCEE
Engineering [email protected]
Katie Oliver-Applications [email protected]
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