Kajian CFD Reduksi Emisi Gas Buang Pada Pembakaran Burner Non-Premixed Berbahan Bakar HSD (High-Speed Diesel) Menggunakan Metode Steam Injection

Aninda, Nayla Rizky (2026) Kajian CFD Reduksi Emisi Gas Buang Pada Pembakaran Burner Non-Premixed Berbahan Bakar HSD (High-Speed Diesel) Menggunakan Metode Steam Injection. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Peningkatan permintaan energi termal di sektor industri menyebabkan ketergantungan tinggi terhadap burner non-premixed berbahan bakar HSD (High-Speed Diesel), namun dalam proses pembakarannya burner non-premixed berbahan bakar HSD menghasilkan emisi polutan yang tinggi. Proses pembakaran bahan bakar diesel menghasilkan berbagai emisi gas buang berbahaya seperti NOx, SO2, CO, UHC, dan jelaga (soot) yang berdampak negatif terhadap lingkungan dan kesehatan. Salah satu metode yang dapat menurunkan emisi adalah dengan menambahkan steam injection, yaitu penginjeksian uap air ke dalam ruang bakar. Penelitian terdahulu yang menggunakan pendekatan eksperimental umumnya memiliki keterbatasan analisis emisi yang tidak menyeluruh. Oleh karena itu, penelitian ini menggunakan pendekatan simulasi Computational Fluid Dynamics (CFD) untuk menganalisis pengaruh penambahan steam injection pada pembakaran burner non-premixed berbahan bakar HSD terhadap emisi gas buang, dengan variasi mass flow rate steam/heated air sebesar 0,7 hingga 1,1 kg/h. Hasil simulasi menunjukkan bahwa penambahan steam injection efektif menurunkan temperatur outlet, emisi NOx, SO2, CO2, dan jelaga secara signifikan dibandingkan dengan pembakaran tanpa steam (heated air). Namun, pada emisi CO dan UHC (Unburned Hydrocarbon) ditemukan fenomena trade-off, yaitu penurunan emisi hanya terjadi hingga mass flow rate tertentu sebelum akhirnya kembali meningkat. Apabila dibandingkan dengan burner kondisi standar tanpa steam, pada penambahan steam dengan mass flow rate 0,9 kg/h terjadi penurunan emisi NOx sebesar 67%, penurunan emisi SO2 sebesar 10%, penurunan emisi jelaga (soot) sebesar 14 %, penurunan emisi CO2 sebesar 10%, dan penurunan UHC sebesar 54%. Namun pada penambahan steam mengalami kenaikan emisi CO sebesar 18%. Seluruh hasil emisi NOx, SO2, dan CO dari simulasi dengan steam injection berada di bawah baku mutu emisi yang ditetapkan Peraturan Menteri Negara Lingkungan Hidup Nomor 07 Tahun 2007. Penelitian ini diharapkan dapat memberikan rekomendasi pengembangan burner ramah lingkungan yang mendukung pengendalian polusi udara.
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The increasing demand for thermal energy in the industrial sector has led to a high dependency on non-premixed burners fueled by High-Speed Diesel (HSD), yet the combustion process of HSD-fueled non-premixed burners produces significant pollutant emissions. Diesel fuel combustion generates various harmful exhaust emissions such as NOx, SO2, CO, UHC, and soot, which negatively affect the environment and human health. One method that can be applied to reduce these emissions is steam injection, which involves injecting steam into the combustion chamber. Previous studies using experimental approaches are generally limited by incomplete emission analysis. Therefore, this study employs a Computational Fluid Dynamics (CFD) simulation approach to analyze the effect of steam injection on the exhaust emissions, with steam/heated air mass flow rate variations ranging from 0.7 to 1.1 kg/h. The simulation results show that steam injection effectively reduces outlet temperature as well as NOx, SO2, CO2, and soot emissions significantly compared to combustion without steam (heated air). However, for CO and Unburned Hydrocarbon (UHC) emissions, a trade-off phenomenon was found, in which emission reduction only occurs up to a certain mass flow rate before increasing again. Compared to the standard burner condition without steam, the addition of steam at a mass flow rate of 0.9 kg/h resulted in a 67% reduction in NOx emissions, a 10% reduction in SO2 emissions, a 14% reduction in soot emissions, a 10% reduction in CO2 emissions, and a 54% reduction in UHC emissions. However, the addition of steam resulted in an 18% increase in CO emissions. All NOx, SO2, and CO emission results from the steam-injected simulations remain below the emission standards set by the Indonesian Ministry of Environment Regulation No. 07 of 2007. This research is expected to provide recommendations for developing environmentally friendly burners that support air pollution control.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Burner Non-Premixed, Computational Fluid Dynamics, Emisi, High Speed Diesel, Injeksi Uap, Emission, Steam Injection
Subjects:	T Technology > T Technology (General) > T57.5 Data Processing T Technology > T Technology (General) > T57.62 Simulation T Technology > TJ Mechanical engineering and machinery > TJ263.5 Boilers (general) T Technology > TJ Mechanical engineering and machinery > TJ265.E23 Thermodynamics.
Divisions:	Faculty of Vocational > Mechanical Industrial Engineering (D4)
Depositing User:	Nayla Rizky Aninda
Date Deposited:	03 Aug 2026 10:12
Last Modified:	03 Aug 2026 10:12
URI:	http://repository.its.ac.id/id/eprint/142363

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