Desain Pabrik Dimetil Eter Hijau Berbasis Pemanfaatan Emisi Co2 Industri Semen Dan Hidrogen Hijau Dari Elektrolisis Air

Prayoga, Putra Adi and Muhammad, Dzaky Ariq (2026) Desain Pabrik Dimetil Eter Hijau Berbasis Pemanfaatan Emisi Co2 Industri Semen Dan Hidrogen Hijau Dari Elektrolisis Air. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Dimetil eter (DME) merupakan senyawa eter yang dapat digunakan sebagai bahan bakar alternatif beremisi rendah. Pembakaran DME menghasilkan emisi NOx, CO, dan particulate matter (PM) yang lebih rendah. DME dengan rasio pencampuran yang tepat berpotensi digunakan sebagai bahan campuran LPG karena kemiripan sifat fisik dengan propana dan n-butana. Produksi DME secara konvensional umumnya dilakukan melalui rute berbasis bahan baku fosil, seperti gas alam atau batu bara, yang melibatkan proses reforming yang menghasilkan syngas (H2 dan CO). Rute ini telah berkembang secara komersial, namun proses tersebut masih menghasilkan emisi karbon yang relatif tinggi. Oleh karena itu, diperlukan proses produksi DME hijau yang memanfaatkan emisi CO2 sebagai bahan baku, menggunakan sumber energi terbarukan, serta menghasilkan emisi karbon yang rendah. Tahapan proses produksi dimetil eter hijau berbasis pemanfaatan emisi CO2 industri semen dan hidrogen hijau dari elektrolisis air dapat dibagi menjadi 4 (empat) tahap proses utama, yaitu proses penangkapan CO2, proses pembentukan hidrogen melalui elektrolisis air, sintesis metanol, serta sintesis dan pemurnian DME. Setelah melalui serangkaian proses, kebutuhan bahan baku utama adalah raw water sebanyak 965.641,63 ton/tahun dan flue gas sebanyak 677.456,25 ton/tahun untuk memproduksi 48.220,23 ton/tahun DME. Berdasarkan analisis ekonomi, didapatkan CAPEX sebesar Rp1.633.414.407.619 dan OPEX sebesar Rp2.097.576.476.458/tahun. Estimasi umur pabrik adalah 20 tahun dan waktu pengembalian pinjaman 5 tahun. Net present value (NPV) yang didapat senilai Rp3.046.514.079.635,91. IRR sebesar 24,96%, POT pada tahun ke-6 dan BEP sebesar 25,41%. Berdasarkan hasil tersebut, dapat disimpulkan bahwa pabrik ini layak untuk didirikan.
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Dimethyl ether (DME) is an ether compound that can be used as a low-emission alternative fuel. The combustion of DME produces lower emissions of NOx, CO, and particulate matter (PM). With an appropriate blending ratio, DME has the potential to be used as an LPG blending component due to its physical properties being similar to those of propane and n-butane. Conventional DME production is generally carried out through fossil-based feedstock routes, such as natural gas or coal, which involve reforming processes to produce synthesis gas (syngas) consisting of H2 and CO. Although these routes have been commercially developed, they still generate relatively high carbon emissions. Therefore, a green DME production process is needed that utilizes CO2 emissions as a feedstock, employs renewable energy sources, and results in low carbon emissions. The green DME production process based on the utilization of CO₂ emissions from the cement industry and green hydrogen produced through water electrolysis can be divided into four main stages: CO2 capture, hydrogen production through water electrolysis, methanol synthesis, and DME synthesis and purification. After a series of processing steps, the required main raw materials are 965,641.63 tons/year of raw water and 677,456.25 tons/year of flue gas to produce 48,220.23 tons/year of DME. Based on the economic analysis, the estimated CAPEX is IDR 1,633,414,407,619 and the OPEX is IDR 2.097,576,476,458 per year. The estimated plant lifetime is 20 years, with a loan repayment period of 5 years. The calculated net present value (NPV) is IDR 3,046,514,079,635.91, the IRR is 24.96%, the POT is 6 years, and the BEP is 25.41%. Based on these results, it can be concluded that the proposed plant is economically feasible and worthy of development.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Green DME; Carbon Capture and Utilization; Renewable Energy; Techno-economic; Clean Energy.
Subjects:	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:	Putra Adi Prayoga
Date Deposited:	28 Jul 2026 07:23
Last Modified:	28 Jul 2026 07:23
URI:	http://repository.its.ac.id/id/eprint/138911

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