Study Analisa Slug-Fly Ash Pada Cyclone Untuk Keandalan Operasi Boiler Stocker PLTU Holtekamp Jayapura-Papua

Prakoso, Indarto Joko (2025) Study Analisa Slug-Fly Ash Pada Cyclone Untuk Keandalan Operasi Boiler Stocker PLTU Holtekamp Jayapura-Papua. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Permasalahan penurunan performance Pembangkit Listrik Tenaga Uap akibat dari slug-Fly Ash pada Cyclone diakibatkan sering terjadi penumpukan slug/penumpukan padat Fly Ash pada Cyclone, ID fan. Hal ini menyebabkan terjadinya gangguan pada sistem operasi PLTU – Holtekamp. Simulasi dan analisa fluida menunjukkan bahwa desain tangensial single cyclone memiliki efisiensi paling tinggi dengan nilai 100% untuk semua ukuran partikel (1, 5, dan 10 mikron), di mana tidak ada fly ash yang ikut terbuang ke outlet flue gas. Axial multicyclone menunjukkan performa paling rendah dalam menangkap fly ash, dengan efisiensi hanya 4.06% untuk partikel 1 mikron, 7.8% untuk 5 mikron, dan 50.7% untuk 10 mikron. Ini mengindikasikan bahwa desain axial kurang optimal untuk menangani fly ash berukuran kecil. Tangensial multicyclone (dengan konfigurasi 264 unit) menunjukkan efisiensi tertinggi tercatat pada partikel 50 mikron (90.3 %), sedangkan untuk 12 micron (80.3%), 10 micron (26.8%), 5 mikron (60.9%) dan 1 mikron hanya (41.7%). Rekomendasi utama adalah penggunaan konfigurasi tangensial multicyclone dengan jumlah unit sebanyak 33 x 8 atau 264 cyclone yang disusun secara miring ke atas. Konfigurasi ini terbukti lebih efisien dibandingkan dengan 22 x 5 atau 110 unit axial singlecyclone dalam menangkap partikel fly ash, terutama pada ukuran partikel kecil (1–12 mikron). Penyusunan miring memungkinkan aliran fluida mengalir lebih stabil dan mendukung efisiensi pemisahan partikel di setiap unit cyclone.
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The performance degradation issue of the Steam Power Plant (PLTU) caused by slug-fly ash in the cyclone is due to the frequent accumulation of solid fly ash within the cyclone and the ID fan. This accumulation leads to operational disturbances in the Holtekamp Steam Power Plant system. Fluid simulation and analysis indicate that the tangential single cyclone design achieves the highest efficiency, reaching 100% for all particle sizes (1, 5, and 10 microns), with no fly ash discharged through the flue gas outlet. In contrast, the axial multicyclone design demonstrates the lowest performance in capturing fly ash, with efficiency values of only 4.06% for 1-micron particles, 7.8% for 5 microns, and 50.7% for 10 microns. This indicates that the axial design is less effective in handling smaller fly ash particles. The tangential multicyclone configuration (consisting of 264 units) shows the highest recorded efficiency for 50-micron particles at 90.3%, followed by 80.3% for 12 microns, 60.9% for 5 microns, 41.7% for 1 micron, and only 26.8% for 10-micron particles. The primary recommendation is to use a tangential multicyclone configuration with 33 x 8 units (264 cyclones) arranged in an upward-sloping manner. This configuration has proven to be more efficient than the 22 x 5 (110 units) axial single cyclone system, particularly in capturing smaller-sized fly ash particles (1–12 microns). The inclined arrangement allows the fluid flow to be more stable, enhancing particle separation efficiency in each cyclone unit.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	PLTU, slug-Fly Ash, Particle, Cyclone, Axial, Tangensial CFPP, slug-Fly Ash, Particle, Cyclone, Axial, Tangential
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ164 Power plants--Design and construction
Divisions:	Faculty of Industrial Technology > Mechanical Engineering > 21101-(S2) Master Thesis
Depositing User:	Indarto Joko Prakoso
Date Deposited:	05 Aug 2025 11:39
Last Modified:	05 Aug 2025 11:39
URI:	http://repository.its.ac.id/id/eprint/127035

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