Magang Mandiri PT Kilang Pertamina Internasional Refinery Unit VI Balongan

Amalia, Firda (2026) Magang Mandiri PT Kilang Pertamina Internasional Refinery Unit VI Balongan. Project Report. [s.n.]. (Unpublished)

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Abstract

PT Kilang Pertamina Internasional Refinery Unit VI Balongan merupakan salah satu kilang dengan tingkat kompleksitas tinggi yang berperan dalam mengolah minyak mentah menjadi berbagai produk bernilai ekonomi tinggi. Salah satu unit yang mendukung proses tersebut adalah Unit Unsaturated Gas Plant yang berfungsi memisahkan fraksi hidrokarbon menjadi untreated LPG dan untreated naphtha. Proses pemisahan berlangsung pada kolom debutanizer 16-C-104, di mana kestabilan kondisi operasi sangat menentukan kemurnian produk yang dihasilkan. Oleh karena itu, troubleshooting ini dilakukan untuk menganalisis pengaruh temperatur bottom column dan reflux ratio terhadap kemurnian untreated LPG serta menentukan kondisi operasi optimum yang dapat meningkatkan kualitas produk dan memberikan keuntungan ekonomi. Analisis dilakukan berdasarkan data operasi aktual periode 21–28 November 2025 menggunakan simulasi Aspen HYSYS dengan paket termodinamika Peng-Robinson. Variabel yang dioptimasi meliputi temperatur bottom column sebesar 168–176°C dan reflux ratio sebesar 2– 3, sedangkan parameter evaluasi meliputi kemurnian untreated LPG, kemurnian untreated naphtha, Reid Vapor Pressure (RVP), serta duty reboiler dan kondensor. Hasil simulasi menunjukkan bahwa kondisi operasi optimum diperoleh pada temperatur bottom column 168°C dan reflux ratio 3 yang menghasilkan kemurnian untreated LPG sebesar 99,68%, kemurnian untreated naphtha sebesar 95,10%, dan RVP naphtha sebesar 10,25 psia yang masih memenuhi spesifikasi. Penerapan kondisi operasi tersebut juga meningkatkan potensi keuntungan sebesar 945 US$/jam atau sekitar Rp139,43 miliar per tahun sehingga dapat direkomendasikan sebagai acuan pengoperasian kolom debutanizer untuk meningkatkan kualitas produk dan efisiensi proses.
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PT Kilang Pertamina Internasional Refinery Unit VI Balongan is one of Indonesia's most complex refineries, playing a strategic role in processing crude oil into various high-value petroleum products. One of the supporting processing units is the Unsaturated Gas Plant Unit, which separates hydrocarbon fractions into untreated LPG and untreated naphtha. This separation process is carried out in the 16-C-104 debutanizer column, where stable operating conditions are essential to maintain product purity. Therefore, this troubleshooting study was conducted to evaluate the effects of bottom column temperature and reflux ratio on untreated LPG purity and to determine the optimum operating conditions for improving product quality and economic performance. The analysis was performed using actual operating data collected from 21 to 28 November 2025 and simulated in Aspen HYSYS with the Peng-Robinson thermodynamic package. The operating variables evaluated were bottom column temperature ranging from 168 to 176°C and reflux ratio ranging from 2 to 3, while the performance parameters included untreated LPG purity, untreated naphtha purity, Reid Vapor Pressure (RVP), and the reboiler and condenser duties. The simulation results indicated that the optimum operating conditions were achieved at a bottom column temperature of 168°C and a reflux ratio of 3, producing untreated LPG purity of 99.68%, untreated naphtha purity of 95.10%, and an naphtha RVP of 10.25 psia, all of which satisfied the required product specifications. Furthermore, these operating conditions increased the potential economic benefit by US$945 per hour, equivalent to approximately IDR 139.43 billion annually. Therefore, the proposed operating conditions are recommended as a reference for operating the debutanizer column to improve product quality and process efficiency.

Item Type:	Monograph (Project Report)
Uncontrolled Keywords:	aspen HYSYS, debutanizer column, reflux ratio, untreated LPG aspen HYSYS, kolom debutanizer, reflux ratio, untreated LPG
Subjects:	T Technology > TP Chemical technology > TP155.7 Chemical processes.
Divisions:	Faculty of Vocational > 24305-Industrial Chemical Engineering
Depositing User:	Firda Amalia
Date Deposited:	15 Jul 2026 07:17
Last Modified:	15 Jul 2026 07:17
URI:	http://repository.its.ac.id/id/eprint/134933

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