Indirect-Fired Rotary Calciner Transforms Wood Biomass into Biocoal

October 9, 2014

1 Min Read
Indirect-Fired Rotary Calciner Transforms Wood Biomass into Biocoal

Heyl & Patterson Inc. supplied an indirect-fired rotary calciner to the University of Minnesota Duluth’s Natural Resources Research Institute (NRRI) minerals lab in Coleraine, MN to transform wood biomass into torrefied wood, or “biocoal.”

The biocoal will have an energy content of more than 10,000 BTUs per lb, and the facility will produce approximately 28,800 lb per day. The calciner is the key part of a “torrefaction island” that integrates a rotary dryer, pelletizer, and other components to facilitate the efficient generation of carbon-neutral electricity on a distributed basis. This system focuses on the cost and thermal effectiveness of the value-added conversion of wood biomass into biocoal.

The biocoal produced at the Coleraine facility will support the University’s research on modern steam-based electricity generation and the categorization of viable fuel options from biomass, including wastes, crop residues, and other forest resources. The project will address the specific needs and challenges facing Minnesota’s residents, forestry industry, electric power generators, and business community.

Heyl & Patterson Inc., Carnegie, PA 412-788-9810

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