Desain Pabrik Gas Hidrogen melalui Elektrolisis Air Alkali

Suwardianto, Singgih Bagas and Nuruddin, Muhammad (2024) Desain Pabrik Gas Hidrogen melalui Elektrolisis Air Alkali. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Hidrogen merupakan salah satu bahan yang dimanfaatkan pada berbagai bidang seperti agrikultur, transportasi, infrastruktur, pembangkit listrik, dan juga diyakini dapat digunakan sebagai bahan bakar ramah lingkungan di masa depan. Jumlah produksi hidrogen pada tahun 2060 diharapkan dapat memenuhi kebutuhan pada industri, transportasi berupa bahan bakar bersih, dan sektor tenaga listrik. Hidrogen dapat diproduksi melalui beberapa metode seperti steam reforming, gasifikasi, fermentasi biomassa, dan elektrolisis. Desain pabrik ini berfokus pada produksi hidrogen melalui metode elektrolisis air dengan kondisi basa (air alkali), dengan menggunakan larutan KOH 20%wt sebagai elektrolit. Proses elektrolisis akan memecah air menjadi gas H2 dan O2. H2 hasil elektrolisis dipurifikasi lebih lanjut dengan pressure swing adsorber untuk menghilangkan pengotor yang masih terdapat pada gas H2 agar dapat mencapai tingkat kemurnian yang diinginkan. Gas H2 ini akan dimanfaatkan untuk bahan baku industri kimia, seperti pabrik amoniak dan metanol. Selain itu, gas O2 sebagai produk samping akan dimanfaatkan pasarkan sebagai O2 untuk keperluan industri. Pabrik hidrogen ini didirikan di wilayah Kecamatan Sebulu, Kabupaten Kutai Kartanegara, Provinsi Kalimantan Timur. Rencana pendirian pabrik ini akan dilakukan selama 2 tahun dengan umur pabrik selama 15 tahun, dengan kapasitas 91595,43 ton H2/tahun. Dari analisa ekonomi, untuk memproduksi 91595,43 ton H2/tahun, diperlukan modal tetap sebesar Rp14.184.129.667.922, dengan modal kerja Rp2.503.081.706.103,87. Operating expenditures (OPEX) sebesar Rp9.026.609.654.702 dengan capital expenditures (CAPEX) sebesar Rp16.687.211.374.025,80. Biaya produksi total Rp5.688.243.141.967. Hasil penjualan per tahun diperoleh sebesar Rp16.865.068.324.176. Selain itu, laju pengembalian modal adalah sebesar 25,90%, yang mana bernilai lebih besar daripada bunga pinjaman bank yaitu sebesar 7,9%. Jangka waktu pengembalian modal diproyeksikan selama 8 tahun serta break-even point sebesar 26,17%. Sehingga, pabrik hidrogen dengan metode elektrolisis air alkali ini layak untuk didirikan.
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Hydrogen is one of the materials utilized in various fields such as agriculture, transportation, infrastructure, and power generation. It is also believed to be a potential environmentally friendly fuel for the future. By 2060, hydrogen production is expected to meet the needs of industry, provide clean fuel for transportation, and support the power sector. Hydrogen can be produced through several methods such as steam reforming, gasification, biomass fermentation, and electrolysis. This plant design focuses on hydrogen production through the electrolysis of water in alkaline conditions, using a 20%wt KOH solution as the electrolyte. The electrolysis process will split water into H2 and O2 gases. The H2 produced from electrolysis is further purified using a pressure swing adsorber to remove impurities and achieve the desired purity level. This H2 gas will be used as a raw material in chemical industries, such as ammonia and methanol plants. Additionally, the O2 gas produced as a byproduct will be marketed for industrial purposes. This hydrogen plant will be established in the Sebulu Subdistrict, Kutai Kartanegara Regency, East Kalimantan Province. The plant is planned to be built over a period of 2 years with a lifespan of 15 years, and a production capacity of 91,595.43 tons of H2 per year. According to economic analysis, to produce 91.595,43 tons of H2 per year, a fixed capital investment of Rp14.184.129.667.922 and a working capital investment of Rp2.503.081.706.103,87 are required. The operating expenditures (OPEX) amount to Rp9.026.609.654.702 and the capital expenditures (CAPEX) are Rp16.687.211.374.025,80. The total production cost is Rp5.688.243.141.967. Annual sales revenue is expected to be Rp16.865.068.324.176. Furthermore, the rate of return is 25,90%, which is higher than the bank loan interest rate of 7.9%. The payback period is projected to be 8 years with a break-even point of 26,17%. Therefore, this alkaline water electrolysis hydrogen plant is feasible to establish.

Item Type: Thesis (Other)
Uncontrolled Keywords: Air, Alkali, Elektrolisis, Hidrogen, Oksigen, Alkaline, Electrolysis, Hydrogen, Oxygen, Water.
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: Singgih Bagas Suwardianto
Date Deposited: 25 Jul 2024 04:20
Last Modified: 25 Jul 2024 04:20
URI: http://repository.its.ac.id/id/eprint/108765

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