Developing Sub-Bituminous Coal Sintering Ratio for Predicting Coal Ash Slagging Factors
Fossil fuels such as coal, gas, and distillate are the core fuels for thermal plants. The thermal coal-fired power plant accounts for 40% of global electricity generation. The thermal coal plant is expected to continue generating electricity until 2040, covering roughly 60–75% of the energy dema...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Universitas Indonesia
2021-10-01
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| Series: | International Journal of Technology |
| Subjects: | |
| Online Access: | https://ijtech.eng.ui.ac.id/article/view/4892 |
| Summary: | Fossil
fuels such as coal, gas, and distillate are the core fuels for thermal plants.
The thermal coal-fired power plant accounts for 40% of global electricity
generation. The thermal coal plant is expected to continue generating
electricity until 2040, covering roughly 60–75% of the energy demand. Coal is largely used as fuel
in thermal power plants in generating electricity. Coal ash causes slagging and
fouling at the boiler in the furnace, superheater tube, and pendant tube. Thus,
the prediction of coal slagging and fouling is imperative for forecasting
boiler repair work and outage. Therefore, this study was conducted in a thermal
coal-fired power plant generating 700 megawatts. X-ray diffraction analysis
(XRD) was applied to analyze the ash composition. A coal sintering method was
developed as an indicator to predict ash slagging. Several coals with different
characteristics were selected to conduct the coal ash analysis. Furthermore,
sub-bituminous coal sintering indexes for predicting coal ash slagging factors
were also developed. From this study, there are minimal ash deposition
tendencies for sub-bituminous coal ash with a low sinter ratio of 0.2, whereas
the ash deposition tendencies are high for high sinter ratios of 0.8 and above. |
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| ISSN: | 2086-9614 2087-2100 |