Analisa Tekno-Ekonomi Dalam Strategi Reduksi Emisi CO2 Pada Transisi Energi Berupa Fuel Switching Batu Bara Ke Natural Gas Di Unit Furnace Pada Proses Produksi Pupuk NPK

Silviani, Devi Intan and Giarti, Rakhma Ayu (2025) Analisa Tekno-Ekonomi Dalam Strategi Reduksi Emisi CO2 Pada Transisi Energi Berupa Fuel Switching Batu Bara Ke Natural Gas Di Unit Furnace Pada Proses Produksi Pupuk NPK. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penggunaan batu bara sebagai bahan bakar utama dalam industri pupuk NPK memberikan kontribusi besar terhadap emisi karbon dioksida (CO₂), yang berdampak negatif terhadap lingkungan dan menghambat pencapaian target dekarbonisasi nasional. Untuk mengatasi hal tersebut, proyek akhir ini dilakukan dengan tujuan mengevaluasi kelayakan teknis dan keekonomian dari strategi fuel switching batu bara ke gas alam di unit furnace dalam proses produksi pupuk NPK. Dalam proses aktual, furnace berperan sebagai penyedia panas untuk rotary dryer dengan sistem pembakaran terbuka yang menggunakan batu bara secara langsung. Seiring meningkatnya tuntutan efisiensi dan keberlanjutan, dilakukan evaluasi terhadap opsi fuel switching ke bahan bakar gas alam. Proyek akhir ini mensimulasikan ulang proses pembakaran aktual di furnace menggunakan perangkat lunak Aspen Plus V14. Untuk batu bara, digunakan pendekatan reaktor berurutan (RYield–RStoic– RCSTR) guna merepresentasikan tahapan dekomposisi, pirolisis, dan pembakaran. Sedangkan untuk gas alam, pembakaran disimulasikan langsung melalui RCSTR karena sifatnya sebagai bahan bakar gas. Evaluasi dilakukan terhadap kinerja termal, emisi CO₂, serta indikator keekonomian meliputi Capital Expenditure (CapEx), Operational Expenditure (OpEx), Net Present Value (NPV), Internal Rate of Return (IRR), dan Payback Period (PP).
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The utilization of coal as the main fuel in the NPK fertilizer industry makes a major contribution to carbon dioxide (CO₂) emissions, which negatively impact the environment and hinder the achievement of national decarbonization targets. To overcome this, this final project was carried out with the aim of evaluating the technical and economic feasibility of the strategy of switching coal to natural gas in the furnace unit in the NPK fertilizer production process. In the actual process, the furnace acts as a heat provider for rotary dryers with an open combustion system that uses coal directly. As the demands for efficiency and sustainability increase, an evaluation of fuel switching options to natural gas fuel is being evaluated. This final project re-simulates the actual combustion process in the furnace using the Aspen Plus V14 software. For coal, a sequential reactor approach (RYield–RStoic– RCSTR) is used to represent the stages of decomposition, pyrolysis, and combustion. As for natural gas, combustion is simulated directly through RCSTR because of its nature as a gaseous fuel. Evaluation was carried out on thermal performance, CO₂ emissions, and economic indicators including Capital Expenditure (CapEx), Operational Expenditure (OpEx), Net Present Value (NPV), Internal Rate of Return (IRR), and Payback Period (PP).

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Fuel Switching, Dekarbonisasi, Batu Bara, Analisis Ekonomi, Emisi Karbon, Fuel Switching, Decarbonization, Coal, Economic Analysis, Carbon Emissions
Subjects:	T Technology > TP Chemical technology > TP155.5 Chemical plants--Design and construction T Technology > TP Chemical technology > TP350 Natural gas--Drying.
Divisions:	Faculty of Vocational > 24305-Industrial Chemical Engineering Technology
Depositing User:	Devi Intan Silviani
Date Deposited:	04 Aug 2025 04:48
Last Modified:	04 Aug 2025 04:48
URI:	http://repository.its.ac.id/id/eprint/125236

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