COFIRING OF BIOMASS AT THE UNIVERSITY OF NORTH DAKOTA

Hutton, Phillip N.

National Energy Technology Laboratory (U.S.)

关键词: Modifications;    Biomass;    Testing;    Subbituminous Coal;    01 Coal, Lignite, And Peat;   

DOI  :  10.2172/802151
RP-ID  :  FG26-00NT40807--04
RP-ID  :  FG26-00NT40807
RP-ID  :  802151

美国|英语

来源: UNT Digital Library

【 摘 要 】

A project funded by the U.S. Department of Energy's National Energy Technology Laboratory was completed by the Energy & Environmental Research Center to explore the potential for cofiring biomass at the University of North Dakota (UND). The results demonstrate how 25% sunflower hulls can be cofired with subbituminous coal and provide a 20% return on investment or 5-year payback for the modifications required to enable firing biomass. Significant outcomes of the study are as follows. A complete resource assessment presented all biomass options to UND within a 100-mile radius. Among the most promising options in order of preference were sunflower hulls, wood residues, and turkey manure. The firing of up to 28% sunflower hulls by weight was completed at the university's steam plant to identify plant modifications that would be necessary to enable cofiring sunflower hulls. The results indicated investments in a new equipment could be less than $408,711. Data collected from test burns, which were not optimized for biomass firing, resulted in a 15% reduction in sulfur and NO{sub x} emissions, no increase in opacity, and slightly better boiler efficiency. Fouling and clinkering potential were not evaluated; however, no noticeable detrimental effects occurred during testing. As a result of this study, UND has the potential to achieve a cost savings of approximately $100,000 per year from a $1,500,000 annual fossil fuel budget by implementing the cofiring of 25% sunflower hulls.