Development and testing of industrial scale, coal fired combustion system, Phase 3. Fifth quarterly technical progress report, January 1, 1993--March 31, 1993
In the present reporting period, the first quarter of calendar year 1993, the effort was divided between Task 2. ``Pre Systems Tests`` and Task 4 ``Economics and Commercialization Plan.`` A major part of the task 2 effort was devoted converting the nozzle from adiabatic to air cooted operation. This conversion will allow immediate implementation of the longer duration task 3.2 tests after the completion of the task 2 tests. Therefore, a significant pan of the exit nozzle conversion effort is also part of task 3.1, ``Combustor Refurbishment.`` In task 1 the only activity remaining is to receive the results of the BYU combustion modeling. The results are anticipated this Spring. One of the three remaining tests in task 2 was implemented in late January under freezing weather and snow conditions. Ice plugged the coal feed lines and stack scrubber water outlet and ice jammed and damaged the coal metering auger. While these lines were thawed, the combustor was fired with oil. The coal used in this test contained fine fibrous tramp material which passed through the two tramp material retaining screens and eventually plugged several of the coal feed lines to the combustor. This cut the planned coal feed rate in half. As a result it was decided for the next test to increase the number of coal injection ports by 50% in order to provide excess capacity in the pneumatic feed feed. This will allow continued operation even in the presence of fine tramp material in the coal.
- Research Organization:
- Coal Tech Corp., Merion Station, PA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC22-91PC91162
- OSTI ID:
- 10167400
- Report Number(s):
- DOE/PC/91162-T5; ON: DE93017784
- Resource Relation:
- Other Information: PBD: 17 May 1993
- Country of Publication:
- United States
- Language:
- English
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