Study of Coal Water Fuel Ratio (AFR) Using Stoikiometry Method in PT. TARA in Kutai Kartanegara District of East Kalimantan Province in Indonesia.
- Country : Indonesia
- Subject : Chemistry
Air Fuel Ratio (AFR) is the ratio of the amount of air and fuel in the combustion process in units of mass or volume. In this study, Air Fuel Ratio (AFR) stoichiometry measured by calculating the amount of substance, chemical reaction equivalence, and air mass required in the combustion process of coal. Research data obtained by proximate analysis, namely inherent moisture, ash content, volatile matter, and fixed carbon. Ultimate analysis consist of carbon (C), hydrogen (H), oxygen (O), nitrogen (N), and sulfur (S). Data processing of this study based on each basis of coal analysis report, namely as received, air dried, dry, and dry ash free. AFR stoichiometry analysis is carried by calculating the amount of substances for each element, chemical reaction equivalence, and calculating the amount of combustion oxygen. Because the AFR analysis of this study used mass units, the calculation of the amount of air mass and the AFR value is based on the basis and chemical reaction. The results of this study showed that the type of coal based on proximate and ultimate analysis was lignite coal. The results of chemical reactions consist of CHS+O2 and CHONS+O2 which affect the AFR value due to the difference in the amount of oxygen in the chemical reaction equivalence. The air fuel ratio (AFR) value of CHS+O2 and CHONS+O2 as received basis 5.42 and 3.42, air dried basis 6.49 and 4.95, dry basis 8.09 and 7.23, dry ash free base 9.71 and 8.67.
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