Evaluasi Efisiensi Boiler Pulverized Coal pada Co-Firing Sawdust PLTU Pacitan
DOI:
https://doi.org/10.58466/njh5st52Kata Kunci:
efisiensi boiler, co-firing, sawdust, pulverized coal, heat lossAbstrak
Penelitian ini mengevaluasi efisiensi boiler tipe pulverized coal pada penerapan direct co-firing biomassa sawdust di PLTU Pacitan Unit 1. Analisis menggunakan data operasi dan performance test pada skema 100% batubara serta skema co-firing 1%, 2%, dan 5% sawdust pada beban sekitar 295 MW. Efisiensi boiler dihitung dengan metode tidak langsung atau heat-loss method berdasarkan ASME PTC 4, dengan mempertimbangkan analisis ultimate dan proximate bahan bakar, komponen rugi panas, fuel rate, temperatur gas keluar air heater, dan data emisi. Hasil menunjukkan bahwa peningkatan komposisi sawdust mengubah karakteristik bahan bakar, terutama penurunan nilai kalor, kandungan sulfur, abu, dan Hardgrove Grindability Index, serta kenaikan total moisture. Efisiensi boiler berbasis LHV diperoleh sebesar 91,96% pada 100% batubara, 92,61% pada 1% sawdust, 92,30% pada 2% sawdust, dan 91,74% pada 5% sawdust. Pada co-firing 5%, konsumsi bahan bakar meningkat sekitar 1,19% dibandingkan coal firing, sedangkan emisi SO2, NOx, dan partikulat menurun serta tetap berada di bawah baku mutu. Dengan demikian, co-firing sawdust mendukung penurunan emisi, tetapi efisiensi boiler dan sistem penanganan bahan bakar perlu dipantau secara berkelanjutan.
Unduhan
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