PENGARUH DEMINERALISASI BATUBARA DENGAN PENAMBAHAN ADSORBEN SEKAM PADI TERHADAP POTENSI PEMBENTUKAN SLAGGING DAN FOULING
Keywords:
Coal, rice husk, slagging, fouling, sulfurAbstract
This study aims to evaluate the effect of coal demineralization with the addition of rice husk adsorbent on the potential formation of slagging and fouling. The demineralization process was carried out by mixing coal and rice husk at various ratios (100:0 to 50:50), followed by analysis of total sulfur content using a LECO S832 DR Sulfur Analyzer and ash mineral composition using an AAS Varian AA240 SF. The results showed that adding rice husk significantly reduced the sulfur content of coal by up to 50% and decreased the slagging (Rs) and fouling (Rf) indices from medium/high to low categories. Increasing the rice husk ratio also raised SiO₂ content while reducing Al₂O₃, Fe₂O₃, CaO, and MgO concentrations. It is concluded that rice husk is an effective adsorbent for coal demineralization, capable of lowering sulfur content and mitigating slagging and fouling potential, thereby improving combustion efficiency and reliability in boiler systems.
Downloads
References
ASTM International. (2018). ASTM D3174-18: Standard Test Method for Ash in the Analysis Sample of Coal and Coke from Coal. ASTM, USA.
ASTM International. (2018). ASTM D4239-18: Standard Test Method for Sulfur in the Analysis Sample of Coal and Coke Using High-Temperature Tube Furnace Combustion Methods. ASTM, USA.
ASTM International. (2019). ASTM C618-19: Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete. ASTM, USA.
Babcock & Wilcox. (2021). Steam: Its Generation and Use (42nd Edition). Babcock & Wilcox, USA.
Babcock & Wilcox. (2018). B&W Boiler Cleaning and Ash Handling Services. Technical Bulletin, B&W Corporate Library.
Badan Pusat Statistik. (2021). Statistik Padi Indonesia 2020. BPS RI.
BP. (2023). Statistical Review of World Energy 2023. BP p.l.c. https://www.bp.com
Chen, W., et al. (2022). Effects of Rice Husk Ash on Mineral Transformation and Slagging Behavior during Coal Combustion. Applied Energy, 311, 118698. https://doi.org/10.1016/j.apenergy.2022.118698
Dey, S., et al. (2021). Sustainable utilization of rice husk ash as adsorbent: A review. Environmental Technology & Innovation, 21, 101267. https://doi.org/10.1016/j.eti.2020.101267
Fei, T., Zhang, W., & Zhao, Y. (2021). SO₂ Absorption by Multiple Biomass Ash Types. ACS Omega, 6(45), 30291–30298.
Fernandez, R., et al. (2021). Evaluation of slagging and fouling indices for coal combustion using B&W method. Fuel Processing Technology, 213, 106720. https://doi.org/10.1016/j.fuproc.2020.106720
Gupta, S., & Banerjee, R. (2019). Evaluation of Alkali to Acid Ratio and Its Correlation with Fouling Propensity in Thermal Boilers. Energy Reports, 5, 780–788. https://doi.org/10.1016/j.egyr.2019.06.012
2.png)
