Desain Pabrik Metanol Dari CO2 Flue Gas dan CH4 Melalui Teknologi Dry Methane Reforming

Firdaus, Adam Savana and Deanti, Jhechonia Louisa Adma (2026) Desain Pabrik Metanol Dari CO2 Flue Gas dan CH4 Melalui Teknologi Dry Methane Reforming. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Desain pabrik metanol (CH3OH) ini dirancang dengan memanfaatkan karbon dioksida (CO2) dari flue gas PLTU Paiton Unit 3 dan metana (CH4) dari Perusahaan Gas Negara sebagai bahan baku utama melalui teknologi Dry Methane Reforming (DMR). Pemilihan proses ini didasarkan pada ketersediaan bahan baku yang melimpah di Indonesia serta potensinya dalam pemanfaatan gas rumah kaca, sehingga mendukung upaya pengurangan emisi karbon dan pengembangan industri kimia berkelanjutan. Proses produksi metanol terdiri atas tiga tahapan utama, yaitu pretreatment flue gas menggunakan teknologi Pressure Swing Adsorption (PSA) untuk menghilangkan nitrogen, pembentukan gas sintesis melalui reaksi Dry Methane Reforming yang menghasilkan karbon monoksida dan hidrogen, serta tahap sintesis metanol yang mengonversi CO dan H2 menjadi CH3OH dengan kemurnian hingga 99,8%. Teknologi DMR dipilih karena mampu memanfaatkan CO2 dan CH4 secara langsung serta menghasilkan rasio syngas yang sesuai untuk sintesis metanol. Perancangan pabrik meliputi penyusunan Process Flow Diagram (PFD), Piping and Instrumentation Diagram (P&ID), Hazard and Operability Study (HAZOP), penentuan spesifikasi peralatan utama, serta perhitungan neraca massa, neraca energi, dan analisis keekonomian. Pabrik direncanakan beroperasi secara kontinyu selama 24 jam per hari dan 330 hari per tahun dengan kapasitas produksi 300.000 ton/tahun. Hasil analisis ekonomi menunjukkan nilai CAPEX sebesar Rp 4,02 triliun, OPEX sebesar Rp 1,5 triliun per tahun, Internal Rate of Return (IRR) sebesar 13,59%, Break Even Point (BEP) sebesar 51%, Pengembalian modal di tahun kesembilan serta Net Present Value (NPV) bernilai positif, sehingga pabrik metanol ini dinyatakan layak secara teknis dan ekonomis serta memberikan manfaat lingkungan melalui pemanfaatan gas buang industri.
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This methanol (CH3OH) plant is designed to utilize carbon dioxide (CO2) from the flue gas of PLTU Paiton Unit 3 and methane (CH4) supplied by Perusahaan Gas Negara as the main feedstocks through Dry Methane Reforming (DMR) technology. The selection of this process is based on the abundant availability of feedstocks in Indonesia and their potential utilization as greenhouse gases, thereby supporting carbon emission reduction and the development of a sustainable chemical industry. The methanol production process consists of three main stages, namely flue gas pretreatment using Pressure Swing Adsorption (PSA) to remove nitrogen, syngas generation through the Dry Methane Reforming reaction producing carbon monoxide and hydrogen, and methanol synthesis, where CO and H2 are converted into CH3OH. Dry Methane Reforming is selected due to its ability to directly utilize CO2 and CH4 while producing a syngas composition suitable for methanol synthesis. The plant design includes the development of a Process Flow Diagram (PFD), Piping and Instrumentation Diagram (P&ID), Hazard and Operability Study (HAZOP), determination of major equipment specifications, as well as mass and energy balance calculations and economic analysis. The plant is designed to operate continuously for 24 hours per day and 330 days per year with a production capacity of 300,000 tons per year. The economic evaluation indicates a CAPEX of Rp4.02 trillion, OPEX Rp 1,5 trillion, an Internal Rate of Return (IRR) of 13.59%, a Break Even Point (BEP) of 51%, and a positive Net Present Value (NPV). These results demonstrate that the methanol plant is technically and economically feasible while providing environmental benefits through the utilization of industrial flue gas.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Metanol, Flue Gas, Dry Methane Reforming, Syngas, Metana, Karbon monoksida, Hidrogen, Methanol, Flue Gas, Dry Methane Reforming, Syngas, Methane, Carbon Monoxide, Hydrogen.
Subjects:	T Technology > TP Chemical technology T Technology > TP Chemical technology > TP155.5 Chemical plants--Design and construction
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Chemical Engineering > 24201-(S1) Undergraduate Thesis
Depositing User:	Jhechonia Louisa Adma Deanti
Date Deposited:	22 Jul 2026 03:45
Last Modified:	22 Jul 2026 03:45
URI:	http://repository.its.ac.id/id/eprint/136220

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