PHG Energy lands Tennessee gasification project

By Anna Simet | March 05, 2015

PHG Energy and the city of Lebanon, Tennessee, have signed a deal to install a gasification plant at the city’s wastewater treatment plant.

The project will employ PHGE’s downdraft gasification technology to daily convert up to 64 tons of blended waste wood, sewer sludge and scrap tires into power, up to 300 kilowatts that will be used for the power needs of both the plant and the wastewater treatment facility.

About 5 to 10 percent of the fuel put in will exit the backend of the plant in the form of a biochar that may be recycled or sold for ag or industrial uses.

Tom Stanzione, PHGE president, said the Lebanon project will deploy what his company believes is the world’s largest downdraft gasifier. “This is the same basic technology we utilized in all our previous designs, and we have upgraded capacity and power density to accomplish a lot more gasification in what is not a lot more space,” he said.

PHGE completed a similar, but smaller-sized project in Covington, Tennessee, in 2013.  While a standard PHGE gasifier, such as the one installed in Covington, can convert up to 12 tons of feedstock per day to fuel gas, the Lebanon model will process up to 64 tons per day without substantially increasing the footprint of the plant, according to PHGE.

While Lebanon marks PHGE’s second municipal waste-based project, the company has installed 12 other gasifiers in industrial and commercial settings, for industrial brick manufacturing clients to replace natural gas usage with wood waste.

The project is scheduled to be complete in early 2016.