Analisis Tekno-Ekonomi Retrofit Sistem Penangkapan CO2 Pasca Pembakaran Berbasis Amina pada PLTU Batubara Ultra-Supercritical 1000 MW

Giri, Yoga Yama (2026) Analisis Tekno-Ekonomi Retrofit Sistem Penangkapan CO2 Pasca Pembakaran Berbasis Amina pada PLTU Batubara Ultra-Supercritical 1000 MW. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Retrofit sistem penangkapan CO₂ pada Pembangkit Listrik Tenaga Uap (PLTU) eksisting berpotensi menurunkan emisi secara signifikan, tetapi menyebabkan penalti energi dan peningkatan biaya pembangkitan. Penelitian ini mengevaluasi dampak teknis dan ekonomi penerapan sistem penangkapan CO₂ pascapembakaran berbasis advanced amine FG+ pada PLTU batubara ultra-supercritical berkapasitas netto 1.000 MW di Indonesia. Simulasi dilakukan menggunakan Integrated Environmental Control Model (IECM) v12.0 dengan membandingkan base plant dan skenario retrofit pada tingkat penangkapan CO₂ sebesar 60%, 70%, 80%, dan 90%. Laju konsumsi batubara dipertahankan konstan pada seluruh skenario. Analisis dibatasi pada proses penangkapan dan kompresi CO₂ di sisi pembangkit, tanpa memperhitungkan transportasi dan penyimpanan. Hasil simulasi menunjukkan bahwa peningkatan tingkat penangkapan memperbesar penalti energi dari 173,4 menjadi 257,3 MW, terutama akibat ekstraksi uap untuk regenerasi pelarut, sehingga daya netto menurun dari 1.000 MW pada base plant menjadi 826,5–742,5 MW. Efisiensi netto berbasis HHV turun dari 41,59% menjadi 34,37–30,89%, sedangkan intensitas emisi CO₂ berkurang dari 0,814 menjadi 0,394–0,110 ton CO₂/MWh. Kebutuhan modal tambahan sistem penangkapan berada pada kisaran 802,6–1.038,7 juta USD, sementara LCOE meningkat dari 29,68 menjadi 56,39–69,08 USD/MWh. CO₂ avoidance cost berada pada rentang 55,93–63,59 USD/ton CO₂. Secara keseluruhan, variasi tingkat penangkapan menunjukkan adanya trade-off antara manfaat pengurangan emisi dan kinerja teknis serta ekonomi pembangkit. Tingkat penangkapan yang lebih tinggi menghasilkan pengurangan emisi yang lebih besar, tetapi juga meningkatkan penalti energi, kebutuhan modal, dan biaya pembangkitan.
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Retrofitting a CO₂ capture system at an existing coal-fired power plant can significantly reduce emissions but results in an energy penalty and increased electricity generation costs. This study evaluates the technical and economic impacts of implementing an advanced amine FG+-based post-combustion CO₂ capture system at a 1,000 MW net ultra-supercritical coal-fired power plant in Indonesia. Simulations were conducted using the Integrated Environmental Control Model (IECM) v12.0 by comparing the base plant with retrofit scenarios at CO₂ capture rates of 60%, 70%, 80%, and 90%. Coal consumption was maintained constant across all scenarios. The analysis was limited to CO₂ capture and compression processes at the power plant, excluding CO₂ transport and storage. The simulation results show that increasing the capture rate raised the energy penalty from 173.4 to 257.3 MW, primarily due to steam extraction for solvent regeneration, reducing net power output from 1,000 MW in the base plant to 826.5–742.5 MW. The HHV-based net efficiency decreased from 41.59% to 34.37–30.89%, while CO₂ emission intensity declined from 0.814 to 0.394–0.110 tCO₂/MWh. The additional capital requirement for the capture system ranged from USD 802.6 million to USD 1,038.7 million, while the levelized cost of electricity increased from USD 29.68/MWh to USD 56.39–69.08/MWh. The CO₂ avoidance cost ranged from USD 55.93 to USD 63.59/tCO₂. Overall, the variation in capture rates demonstrates a trade-off between emission-reduction benefits and the technical and economic performance of the power plant. Higher capture rates achieve greater emission reductions but also increase the energy penalty, capital requirements, and electricity generation costs.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	analisis tekno-ekonomi; IECM; penangkapan CO₂ pascapembakaran; PLTU ultra-supercritical; tingkat penangkapan. techno-economic analysis; IECM; post-combustion CO₂ capture; ultra-supercritical coal-fired power plant; capture rate.
Subjects:	T Technology > TD Environmental technology. Sanitary engineering > TD171.75 Climate change mitigation T Technology > TD Environmental technology. Sanitary engineering > TD899.S68 Steam power plants
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21101-(S2) Master Thesis
Depositing User:	Yoga Yama Giri
Date Deposited:	30 Jul 2026 01:53
Last Modified:	30 Jul 2026 01:53
URI:	http://repository.its.ac.id/id/eprint/140028

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