Pulverization induced charge: In-line dry coal cleaning. Technical progress report {number_sign}6, October 1--December 31, 1995 Page: 1 of 6
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WE/ PC.l 4 2b-(
TECHNICAL PROGRESS REPORT #6
Title:
Organization:
Report Period:
Grant Period:Pulverization Induced Charge: In-Line Dry Coal Cleaning (DE-
PS22-94PC94225)
Center for Applied Energy Research, University of Kentucky
3572 Iron Works Pike
Lexington, KY 40511
10/1/95-12/31/95
9/8/94-8/31/971. Grant Objective: No change
2. Technical Approach Changes: No changes.
3. Progress Report by Task:
Task 1. Charge DeterminationsDirect firing coal pulverization systems, both pressurized and suction types, are the
predominate design for utility pulverized coal (PC) boilers. Pressurized systems incorporate a fan
prior to the pulverizer, which blows prepared coal after pulverization through a classifier and into
burner pipes. Suction systems utilize an exhauster fan to pull prepared coal after pulverization
through a classifier and blows the coal into the burner pipes. On-site measurements on a
pressurized system at the Spurlock Station of East Kentucky Power in Maysville, KY have
already been performed, the results from which were presented in previous reports. During this
quarter, a second series of on-site tests were performed on a suction pulverizer system at the
Widows Creek Plant of theTennessee Valley Authority (TVA) in Stevenson, AL.
The furnace on which tests were performed at Widows Creek was a 500 MW tangentially
fired unit, burning high sulfur (non-compliance) bituminous coal. The inclusion of a non-
compliance, high sulfur coal in the test matrix provides for direct comparisons to the compliance
coal tests conducted at the EKP site. The TVA furnace had a total of 20 burners, 5 on each
corner, each of which was supplied by five pulverizers. The crushed coal is pulled from the
pulverizer, through the exhauster and exits via a 32" pipe which subsequently splits into the
individual burner pipes leading to the burners. Measurements were made in the 32" pipe
immediately downstream of the exhauster.
A 55 gallon drum of crushed coal was collected from the first pulverizer for the tests to be
performed at the CAER within Task 2. A one inch probe was used to withdraw a stream of airMASTER
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Pulverization induced charge: In-line dry coal cleaning. Technical progress report {number_sign}6, October 1--December 31, 1995, report, June 1, 1996; Lexington, Kentucky. (https://digital.library.unt.edu/ark:/67531/metadc666070/m1/1/: accessed April 23, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.