USE OF COAL DRYING TO REDUCE WATER CONSUMED IN PULVERIZED COAL POWER PLANTS Page: 3 of 46
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ABSTRACT
This is the fifth Quarterly Report for this project. The background and technical
justification for the project are described, including potential benefits of reducing fuel
moisture, prior to firing in a pulverized coal boiler.
A theoretical model, for computing the effects of dryer design and operating
conditions on performance of a continuous flow fluidized bed dryer, operating at steady
state conditions, is described. Numerical results from the model, compared to data from
a pilot scale lignite dryer located at Great River Energy's Coal Creek Station, show good
agreement.
The dryer model was used to perform parametric calculations on the effects of
dryer design and operating conditions on dryer performance and required in-bed heat
transfer. Other analyses show the first order effects of firing lignite and PRB coals,
dried to various moisture levels, on flow rates of coal, combustion air and flue gas, fan
and mill power and unit heat rate.iii
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Levy, Edward K.; Sarunac, Nenad; Feng, Gu & Zhang, Wei. USE OF COAL DRYING TO REDUCE WATER CONSUMED IN PULVERIZED COAL POWER PLANTS, report, April 1, 2004; United States. (https://digital.library.unt.edu/ark:/67531/metadc778754/m1/3/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.