Studi Numerik Pengaruh Co-firing 10 Persen Hidrogen serta 10 Persen Amonia pada Elevasi Burner C dan D terhadap Distribusi Temperatur dan Emisi pada Boiler PLTU 210 MW

Pratyasanto, Isham Syarif (2026) Studi Numerik Pengaruh Co-firing 10 Persen Hidrogen serta 10 Persen Amonia pada Elevasi Burner C dan D terhadap Distribusi Temperatur dan Emisi pada Boiler PLTU 210 MW. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Tingginya ketergantungan Pembangkit Listrik Tenaga Uap (PLTU) pada batu bara berkontribusi besar terhadap emisi karbon global. Sebagai upaya dekarbonisasi, penelitian ini mempelajari penerapan co-firing menggunakan 10% hidrogen dan 10% ammonia pada boiler PLTU 210 MW. Simulasi numerik berbasis Computational Fluid Dynamics (CFD) dilakukan dengan memvariasikan lokasi injeksi pada elevasi Burner C dan Burner D, serta divalidasi terhadap data operasional 100% batu bara. Hasil simulasi menunjukkan bahwa co-firing menurunkan Furnace Exit Gas Temperature (FEGT) akibat meningkatnya uap air (H2O) yang menyerap panas. Penerapan co-firing berhasil mereduksi emisi CO2 di outlet boiler sebesar 5,80%–6,10% pada skenario hidrogen dan 8,24%–8,29% pada skenario ammonia. Terkait emisi NOx, injeksi hidrogen memicu kenaikan sebesar 5,21%–7,29% akibat tingginya suhu lokal yang membentuk thermal NOx. Sebaliknya, injeksi ammonia mampu menurunkan emisi NOx hingga 1,20%–5,50% karena ammonia bertindak sebagai agen pereduksi (self-DeNOx) di dalam ruang bakar. Secara keseluruhan, elevasi injeksi yang lebih tinggi (Burner D) memberikan hasil yang lebih baik untuk menekan emisi. Skenario co-firing 10% ammonia pada Burner D terbukti sebagai strategi paling optimal untuk mereduksi emisi CO2 dan NOx secara optimal tanpa mengganggu stabilitas termal boiler.
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The high dependence of coal-fired power plants on coal contributes significantly to global carbon emissions. As a decarbonization effort, this study investigates the application of co-firing using 10% hydrogen and 10% ammonia in a 210 MW power plant boiler. Numerical simulations based on Computational Fluid Dynamics (CFD) were conducted by varying the injection locations at the elevations of Burner C and Burner D, and validated against 100% coal operational data. The simulation results indicate that co-firing decreases the Furnace Exit Gas Temperature (FEGT) due to the increased formation of water vapor (H2O), which absorbs heat. The implementation of co-firing successfully reduced CO2 emissions at the boiler outlet by 5.80%–6.10% in the hydrogen scenario and 8.24%–8.29% in the ammonia scenario. Regarding NOx emissions, hydrogen injection triggered an increase of 5.21%–7.29% due to high local temperatures that promoted the formation of thermal NOx. Conversely, ammonia injection was able to reduce NOx emissions by 1.20%–5.50% because ammonia acts as a reducing agent (self-DeNOx) within the combustion chamber. Overall, the higher injection elevation (Burner D) provided better results in suppressing emissions. The 10% ammonia co-firing scenario at Burner D proved to be the most optimal strategy to reduce both CO2 and NOx emissions effectively without disrupting the thermal stability of the boiler.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Amonia, Boiler, Co-Firing, Emisi, Hidrogen, Ammonia, emissions, Hydrogen.
Subjects:	Q Science > QC Physics > QC320 Heat transfer T Technology > TJ Mechanical engineering and machinery > TJ164 Power plants--Design and construction T Technology > TJ Mechanical engineering and machinery > TJ263 Heat exchangers T Technology > TJ Mechanical engineering and machinery > TJ263.5 Boilers (general) T Technology > TJ Mechanical engineering and machinery > TJ265.E23 Thermodynamics.
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User:	Isham Syarif Pratyasanto
Date Deposited:	29 Jul 2026 07:48
Last Modified:	29 Jul 2026 07:48
URI:	http://repository.its.ac.id/id/eprint/139828

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