jay babin owt thailand. trash to gas to electricity use landfill gas (lfg) to power an engine to run...
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Jay BabinOWT Thailand
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Trash to Gas to ElectricityUse Landfill Gas (LFG) to power an engine to
run a generator to produce electricityElectricity can be used “in-house” or sold to
the gridMore gas produced means more power
(potentially)More gas captured means more powerOver 1,200 LFG to energy projects world-
wide From 0.5 MW to >50 MW
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Trash to Gas to ElectricityOrganic material in landfills will biodegrade.
With oxygen present produce carbon dioxide (CO2) and water
Without oxygen (anaerobic) produce methane (CH4), CO2, and water
Thus need to promote anaerobic biodegradation
Couple with enhanced recovery
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Sanitary Landfill
Source: BAGCHI Waste Management
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LFG Utilization (Trash to Cash)
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Trash to Gas to ElectricityLandfill gas consists of CH4 (50-60%) CO2
(35-45) and other trace gases (H2S, O2)Must optimize both gas production as well as
gas collectionCollect the gas (horizontal and/or vertical
wells)Pre-treatment (KOP) to remove waterEither Flare Further treatment (filters/cooler) then
generate electricity
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LFG Generation for 3,000 TPD to 2010
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LFGE Economics in Thailand
Power Pricing -three components:
VSPP Standard Pricing:
SupplyPeak: THB 2.9278/kWh Off-peak: THB 1.1154/kWh
assume 2.02 Bt/KWhFt charge:
THB 0.9255/kWhAdder:
THB 2.5/kWhTotal of 5.4471 Bt/kWh
VSPP Power Purchase Agreement (PPA)
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LFG Economics in Thailand
1 MW/year Electricity produced provides 7,446,000 kWh (assume 85% available)
= 40,559,106 THB/year=1,329,806 $US/year @ 30.5 THB/$US
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Electricity Revenue (3,000 TPD)
Total electricity revenue is $US 140 Million
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GHG Revenue
130 m3 of = 1 Tonne of CO2 equivalents GHG income is 46 M $USTOTAL Revenue = 186 M $US
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CostsExtremely variable
Power costs ~750 K/MW (7.5 M $US)Gas Collection Infrastructure 1 M $US/MW = 10 M $US
Infrastructure (compound) cost (~400 K/MW) 4 M $US
Labour 1 M $US/year = 22 M $USO&M 1 M $US/year = 22 M $USTotal 65.5 M $USExcluding Gas rights (negotiable)
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EconomicsRevenue = 186 M $USCost = 65.5 M $USNet (excluding gas rights) is 120.5 M $US
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