Cofiring urban wood waste with Powder River Basin coal at the Michigan City generating station
Conference
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OSTI ID:585257
- and others
Northern Indiana Public Service Co. (NIPSCO) and the Electric Power Research Institute (EPRI) sponsored cofiring tests of urban wood waste with Powder River Basin (PRB) coal at the Michigan City Generation Station Boiler No. 12. Michigan City Boiler No. 12 is a supercritical unit generating 3.25x10{sup 6} lb/hr of 3500psig/1000{degrees}F/1000{degrees}F steam for the generation of 469 MW{sub e}. The test was unique in several respects: cofiring with PRB coal; preblending wood waste and coal, and storing the blend for 4 months; and cofiring in a supercritical boiler. Further, it was the most extensive test involving urban wood waste. Some 1,000 tons of biofuel were cofired with a blend of Black Thunder (PRB) and Shoshone coal. Data were obtained for an evaluation of the impacts of cofiring on unit capacity, stability, efficiency, and the formation of emissions. The test results demonstrated that cofiring could be accomplished, and that there were no technical fatal flaws to deploying this technology. At the same time the test program documented impacts of cofiring on boiler capacity, efficiency, and emissions. Capacity can be impacted when the boiler is clean; however after the boiler has returned from an outage and run for several months, there is no capacity impact. Efficiency is impacted by cofiring; this reduces the economic value of the biofuel. Virtually all emissions are reduced by cofiring, and significant environmental benefits can be obtained in this area. The paper below summarizes the tests and associated results.
- Research Organization:
- Coal and Slurry Technology Association, Washington, DC (United States)
- OSTI ID:
- 585257
- Report Number(s):
- CONF-980309--PROC.
- Country of Publication:
- United States
- Language:
- English
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