Tinjauan Teknis Dan Ekonomis Pemasangan Homogenizer Pada Sistem Bahan Bakar Kapal Tanker PT. PERTAMINA

Putra, Muhammad Lutfi Pragola (2016) Tinjauan Teknis Dan Ekonomis Pemasangan Homogenizer Pada Sistem Bahan Bakar Kapal Tanker PT. PERTAMINA. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

HFO menjadi salah satu pilihan bahan bakar untuk mesin kapal karena harganya yang relatif lebih murah dibandingkan dengan HSD dan MDO. Namun demikian, tidak seperti HSD yang dapat digunakan secara langsung, HFO harus harus menjalani perlakuan pada sistem bahan bakar sebelum memasuki mesin. Sistem perlakuan HFO diantaranya meliputi storage tanks, transfer pumps, settling tanks, separators, service tank, dan booster pump. Dikarenakan semakin berkembangnya proses penyulingan minyak, HFO telah berubah baik secara kualitas maupun kuantitas. HFO saat ini selain memiliki kosentrasi aspal yang lebih tinggi, juga telah mengalami perubahan properties, seperti viskositas dan densitas. Penurunan kualitas bahan bakar ini dapat menyebabkan timbulnya komplikasi masalah baik pada mesin induk maupun pada komponenkomponen sistem pengolahan bahan bakar. Untuk mengurangi efek tersebut, bahan bakar dapat dihomogenkan melalui proses yang dinamakan homogenisasi. Proses homogenisasi menjadi hal yang krusial khususnya untuk bahan bakar HFO. Melalui proses homogenisasi, sludge bahan bakar dapat berkurang, kualitas pembakaran menjadi lebih baik, dan berpengaruh positif terhadap berkurangnya emisi gas buang dan berkurangnyaviii NOx. Proses homogenisasi dilakukan oleh alat yang dinamakan homogenizer. Pada tugas akhir ini, penulis akan meneliti pengaruh pemasangan homogenizer pada sistem bahan bakar kapal tanker PT. Pertamina. Penelitian dilakukan dengan membandingkan perbedaan biaya konsumsi bahan bakar antara kapal tanker milik PT. Pertamina yang telah dilengkapi dengan homogenizer, MT. Pangkalan Brandan, dengan tanker PT. Pertamina yang belum terpasang homogenizer. Penelitian dilakukan dengan membandingkan FOC dua kapal dengan dimensi yang hampir sama dan menghitung keuntungan dari penurunan biaya bahan bakar. Dikarenakan fluktuasi harga bahan bakar, maka harga bahan bakar akan disimulasikan memalui lima skenario harga yang berbeda yaitu, menurun 2,93% pertahun, menurun 1,47% pertahun, harga konstan, meningkat 6,7% pertahun, dan meningkat 13,41% pertahun. Melalui kalkulasi ekonomis, hasil dari pemasangan homogenizer selama sepuluh tahun memberikan efek pada pengurangan biaya konsumsi bahan bakar sebesar ; $47.462,1 dengan skenario harga bahan bakar menurun 2,93% pertahun, $52.615,9 dengan skenario harga bahan bakar menurun 1,47% pertahun, $58.185,0 dengan skenario harga bahan bakar konstan, $89.928,0 dengan skenario harga bahan bakar meningkat 6,7% pertahun, dan $134.975,1 dengan skenario harga bahan bakar meningkat 13,41% pertahun. Payback period secara keseluruhan pada kelima skenario harga akan tercapai pada periode empat tahun setelah masa operasional ========================================================================================================= HFO has become one of fuel choice for engine on board because it has a relatively cheaper price compared to HSD and MDO. However, unlike HSD which is can be used directly, HFO must have system of preparation before it flowed into ship's engine. HFO system generally includes storage tanks, transfer pumps, settling tanks, separators, service tank, booster pump. Because of more advanced refining process, HFO has changes in terms of quality and quantity. HFO currently has a higher concentration of asphalt content and also experiencing a change in fuel properties, such as viscosity and density. This low quality fuel may lead to several complication on main engine and fuel treatment system components. To reduce the impact, fuel can be homogenized by process called Homogenization process. Homogenization process becomes important for fuel especially HFO. By performing homogenization of fuel, fuel waste can be reduced, quality of combustion can be better, and also able to provide a positive influence for the reduction of emissions and a reduction in NOx levels. Homogenization process is done with a tool called a homogenizer.viii In this bachelor thesis, author intends to study the effect of homogenizer instalation on PT. Pertamina tanker’s fuel system. Research will study fuel oil cost difference between PT. Pertamina tankers MT. Pangkalan Brandan which equipped with homogenizer and MT. Palusipat which are not equipped with homogenizer. Research is be done by comparing FOC two similiar ships and calculate it’s fuel benefit reduction cost. Due to fuel oil price fluctuation, fuel oil price will be simulated with five different scenario which are decrease 2,93% annually, decrease 1,47% annually, constant price, increase 6,7% annually, and increase 13,41% annually. Through ecomonic calculation, the result for homogenizer instalation are effect on reducing fuel oil consumption cost whithin 10 years. Fuel oil consumption cost reduction are ; $47.462,1 with fuel oil price decrease 2,93% annually, $52.615,9 with fuel oil price decrease 1,47% annually, $58.185,0 with constant fuel oil price, $89.928,0 with fuel oil price increase 6,7% annually, and $134.975,1 with fuel oil price increase 13,41% annually. Payback period will be obtained within 4 years after operation

Item Type: Thesis (Undergraduate)
Additional Information: RSSP 621.402 3 Put t-1
Uncontrolled Keywords: Konversi bahan bakar, pengurangan biaya bahan bakar, homogenizer, sistem bahan bakar kapal.
Subjects: V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering
Divisions: Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis
Depositing User: Mr. Tondo Indra Nyata
Date Deposited: 01 Apr 2020 03:57
Last Modified: 01 Apr 2020 03:57
URI: https://repository.its.ac.id/id/eprint/75638

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