| MISSION: Collect specifics on Coffin Butte's landfill (gas generation, current utilization, current effiencies of power generation) |
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| Landfill : |
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| Coffin Butte Landfill |
| Gas Supply : |
| Landfill gas is comprised of fifty to sixty percent methane, forty to fifty percent carbon monoxide and less than one percent hydrogen, oxygen, nitrogen and other trace gases. |
| Current Utilization System : |
| Three 850 kilowatt diesel engines designed to burn landfill gas. Plant is running at near-100% capacity. |
| System Efficiencies : |
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| Powered by a 75HP motor, a blower draws gas from the landfill wells and compresses the gas on its way to the engines. |
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| The methane gas is collected in wells at the landfill and piped to the power plant. One of the wells can be seen at the left with a collection pipe angling down toward the right. |
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| Water vapor and particulates are removed from the gas before delivery to the engines. |
| Three 16-cylinder Caterpillar engines use the landfill gas for fuel. Each engine turns a generator capable of producing 820 kilowatts of electricity. |
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| REFERENCE |
| Estimated Methane generation :1.48(mmscf/d) |