Reverse Engineering Komposisi Material Grinding Pulverizer untuk Meningkatkan Keandalan Penggilingan Batu bara di PT PLN Nusantara Power Unit Pembangkitan Tanjung Awar-Awar
DOI:
https://doi.org/10.47178/nnten846Keywords:
Rekayasa balik, rol penggiling, penghancur, pelapisan permukaan keras, efisiensi energi, keandalan pembangkitAbstract
Penelitian ini bertujuan mengevaluasi penerapan reverse engineering komposisi material grinding roller untuk meningkatkan efisiensi dan keandalan pulverizer di PT PLN Nusantara Power UP Tanjung Awar-Awar. Permasalahan utama adalah keausan grinding roller akibat variasi karakteristik batu bara berdasarkan Hardgrove Grindability Index (HGI), yang meningkatkan beban penggilingan dan konsumsi energi. Metode penelitian meliputi karakterisasi material melalui pengujian X-Ray Fluorescence (XRF), kekerasan, dan metalografi, dilanjutkan redesain komposisi material serta aplikasi lapisan hardfacing berbasis karbida krom. Evaluasi dilakukan pada enam unit pulverizer dengan membandingkan konsumsi daya sebelum implementasi (Juli 2024) dan sesudah implementasi (Mei–Juni 2025). Hasil menunjukkan perbaikan homogenitas struktur mikro dan penurunan konsumsi daya pada seluruh unit. Penghematan energi mencapai 1.261,83 GJ atau 350.512,45 kWh, dengan estimasi penghematan batu bara sebesar 217.317,72 kg dan biaya operasional Rp288,12 juta. Estimasi reduksi emisi meliputi CO₂ sebesar 559,46 ton, SO₂ 1,27 ton, NO₂ 0,04 ton, dan partikulat 0,06 ton. Hasil penelitian menunjukkan bahwa reverse engineering berpotensi meningkatkan efisiensi energi dan mendukung keandalan operasional serta keberlanjutan lingkungan pembangkit.
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