Performance analysis and pilot plant test results for the Komorany fluidized bed retrofit project
- POWER International, Inc., Coeur d`Alene, ID (United States)
Detailed heat and mass balance calculations and emission performance projections are presented for an atmospheric fluidized bed boiler bottom retrofit at the 927 MWt (steam output) Komorany power station and district heating plant in the Czech Republic. Each of the ten existing boilers are traveling grate stoker units firing a local, low-rank brown coal. This fuel, considered to be representative of much of the coal deposits in Central Europe, is characterized by an average gross calorific value of 10.5 MJ/kg (4,530 Btu/lb), an average dry basis ash content of 47 %, and a maximum dry basis sulfur content of 1.8 % (3.4 % on a dry, ash free basis). The same fuel supply, together with limestone supplied from the region will be utilized in the retrofit fluidized bed boilers. The primary objectives of this retrofit program are, (1) reduce emissions to a level at or below the new Czech Clean Air Act, and (2) restore plant capacity to the original specification. As a result of the AFBC retrofit and plant upgrade, the particulate matter emissions will be reduced by over 98 percent, SO{sub 2} emissions will be reduced by 88 percent, and NO{sub x} emissions will be reduced by 38 percent compared to the present grate-fired configuration. The decrease in SO{sub 2} emissions resulting from the fluidized bed retrofit was initially predicted based on fuel sulfur content, including the distribution among organic, pyritic, and sulfate forms; the ash alkalinity; and the estimated limestone calcium utilization efficiency. The methodology and the results of this prediction were confirmed and extended by pilot scale combustion trials at a 1.0 MWt (fuel input), variable configuration test facility in France.
- Research Organization:
- North Dakota Univ., Grand Forks, ND (United States)
- OSTI ID:
- 374587
- Report Number(s):
- DOE/MC/30097-5161-Pt.2; CONF-9410458-Pt.2; ON: DE96011553; TRN: 96:004422-0013
- Resource Relation:
- Conference: 2. international conference on energy and environment: transitions in East Central Europe, Prague (Czech Republic), 31 Oct - 1 Nov 1994; Other Information: PBD: Dec 1995; Related Information: Is Part Of Advanced power assessment for Czech lignite, Task 3.6, Part 2; Sondreal, E.A.; Mann, M.D.; Weber, G.W.; Young, B.C.; PB: 774 p.
- Country of Publication:
- United States
- Language:
- English
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