Studi Numerik Pengaruh Co-Firing 15 Persen Amonia Pada Elevasi Burner A Dan B Terhadap Distribusi Temperatur Dan Emisi Pada Boiler PLTU 210 MW

Wijayakusuma, Andika Prathama (2025) Studi Numerik Pengaruh Co-Firing 15 Persen Amonia Pada Elevasi Burner A Dan B Terhadap Distribusi Temperatur Dan Emisi Pada Boiler PLTU 210 MW. Other thesis, Institut Teknologi Sepuluh Nopember.

Text 5007211069-Undergraduate_Thesis.pdf Restricted to Repository staff only Download (7MB) | Request a copy

Abstract

Sebagian besar pasokan energi listrik di Indonesia masih berasal dari Pembangkit Listrik Tenaga Uap (PLTU) berbahan bakar batu bara. Namun, pembakaran batu bara memberikan kontribusi besar terhadap emisi gas rumah kaca (GHG), dengan total emisi pada tahun 2022 mencapai 15,274.0 Metric Ton CO2 menurut Internasional Energy Agency. Sebagai solusi, teknologi co-firing dengan bahan bakar alternatif seperti amonia mulai dikembangkan, sejalan dengan target bauran Energi Baru Terbarukan (EBT) sebesar 23% pada tahun 2025. Penelitian ini bertujuan untuk menganalisis pengaruh penambahan amonia sebesar 15% terhadap distribusi temperatur dan emisi CO₂ serta NOx dalam boiler PLTU tipe pulverized coal berkapasitas 210 MW. Simulasi numerik dilakukan menggunakan ANSYS Fluent dengan validasi terhadap data aktual pembakaran 100% batu bara. Dua skenario co-firing dianalisis, yaitu injeksi amonia melalui burner A (Case 1) dan burner B (Case 2). Hasil menunjukkan bahwa temperatur flue gas mengalami penurunan masing-masing sebesar 33°C dan 34°C pada Case 1 dan 2 akibat peningkatan fraksi H₂O dari pembakaran amonia. Emisi CO₂ menurun hingga 13,2%, sedangkan emisi NOx juga berkurang meskipun tidak signifikan, menunjukkan adanya reaksi reduksi pada kondisi tertentu. Perbedaan elevasi buner injeksi amonia tidak berpengaruh secara signifikan terhadap performa maupun emisi hasi pembakaran. Co-firing amonia terbukti dapat mengurangi emisi tanpa mengganggu performa termal boiler.
=================================================================================================================================
Most of Indonesia's electricity supply still relies on coal-fired power plants (CFPP). However, coal combustion significantly contributes to greenhouse gas (GHG) emissions, with total emissions reaching 15,274.0 metric tons of CO₂ in 2022, according to the International Energy Agency. As a solution, co-firing technology using alternative fuels such as ammonia has been introduced, aligning with the national renewable energy mix (EBT) target of 23% by 2025. This study aims to analyze the impact of adding 15% ammonia on flue gas temperature distribution and emissions of CO₂ and NOx in a 210 MW pulverized coal boiler. Numerical simulations were performed using ANSYS Fluent, with validation conducted by comparing results from 100% coal combustion with actual operational data. Two co-firing scenarios were analyzed: ammonia injection through burner A (Case 1) and burner B (Case 2). Results show a flue gas temperature reduction of 33°C in Case 1 and 34°C in Case 2, mainly due to increased H₂O mass fraction from ammonia combustion. CO₂ emissions decreased by up to 13.2%, while NOx emissions also declined slightly, indicating the occurrence of reduction reactions under certain conditions. Differences in ammonia injection burner elevation do not significantly affect performance or combustion emissions. Overall, ammonia co-firing has been shown to reduce emissions without compromising the thermal performance of the boiler.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Amonia , Co-Firing, Temperatur, Elevasi, 3D Modelling, Emisi
Subjects:	T Technology > TJ Mechanical engineering and machinery T Technology > TJ Mechanical engineering and machinery > TJ164 Power plants--Design and construction T Technology > TJ Mechanical engineering and machinery > TJ263.5 Boilers (general) T Technology > TJ Mechanical engineering and machinery > TJ265.E23 Thermodynamics. T Technology > TJ Mechanical engineering and machinery > TJ808 Renewable energy sources. Energy harvesting.
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User:	Andika Prathama Wijayakusuma
Date Deposited:	30 Jul 2025 06:06
Last Modified:	30 Jul 2025 06:06
URI:	http://repository.its.ac.id/id/eprint/123377

Actions (login required)

View Item