Laporan Akhir Magang PT Wilmar Nabati Gresik

Rachmadina, Alya (2026) Laporan Akhir Magang PT Wilmar Nabati Gresik. Project Report. [s.n.]. (Unpublished)

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Abstract

Kegiatan magang dilaksanakan di PT Wilmar Nabati Indonesia, Gresik, dengan fokus pada pemahaman proses hidrogenasi di Fatty Acid Plant serta penyelesaian permasalahan pendinginan produk Hydrogenated Refined Palm Stearin (HRPS) untuk kebutuhan pengiriman. Pada kondisi aktual, HRPS keluar dari rangkaian proses pada suhu 88,9°C, sedangkan suhu produk yang dipersyaratkan untuk pengiriman adalah 60°C. Penyelesaian dilakukan melalui perancangan awal plate heat exchanger (PHE) dengan cooling water sebagai media pendingin. Metode yang digunakan meliputi observasi lapangan, pengumpulan data operasi, analisis process flow diagram dan piping and instrumentation diagram, penyusunan neraca massa dan energi, kajian HAZOP, serta perhitungan desain termal dan hidraulik PHE. Berdasarkan hasil perhitungan, beban panas yang harus dipindahkan sebesar 356,29 kW pada laju alir HRPS 6,35 kg/s. Kebutuhan cooling water diperoleh sebesar 9,85 kg/s. Nilai overall heat transfer coefficient hasil perhitungan sebesar 389 W/m²·K, sedangkan pressure drop sisi HRPS dan sisi cooling water masing-masing sebesar 0,33 bar dan 0,36 bar. Kedua nilai tersebut berada di bawah batas yang diizinkan, yaitu 0,5 bar pada setiap sisi. Dengan demikian, rancangan awal PHE dinilai layak secara termal dan hidraulik untuk menurunkan suhu HRPS hingga 60°C, tetapi tetap memerlukan verifikasi lebih lanjut oleh vendor sebelum diterapkan.
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The internship was conducted at PT Wilmar Nabati Indonesia, Gresik, with a focus on understanding the hydrogenation process in the Fatty Acid Plant and solving the cooling problem of Hydrogenated Refined Palm Stearin (HRPS) intended for shipment. Under actual operating conditions, HRPS leaves the process at 88.9°C, whereas the required shipping temperature is 60°C. The proposed solution was the preliminary design of a plate heat exchanger (PHE) using cooling water as the cooling medium. The methods included field observation, operating data collection, analysis of the process flow diagram and piping and instrumentation diagram, preparation of mass and energy balances, HAZOP assessment, and thermal and hydraulic design calculations. The results showed that the required heat duty was 356.29 kW at an HRPS flow rate of 6.35 kg/s. The required cooling-water flow rate was 9.85 kg/s. The calculated overall heat transfer coefficient was 389 W/m²·K, while the pressure drops on the HRPS and cooling-water sides were 0.33 bar and 0.36 bar, respectively. Both values were below the allowable pressure drop of 0.5 bar for each side. Therefore, the preliminary PHE design was considered thermally and hydraulically feasible for cooling HRPS to 60°C. Nevertheless, further verification by the equipment vendor is required before implementation.

Item Type:	Monograph (Project Report)
Uncontrolled Keywords:	HRPS, Hidrogenasi, Plate Heat Exchanger, Cooling Water, Pressure Drop HRPS, Hydrogenation, Plate Heat Exchanger, Cooling Water, Pressure Drop
Subjects:	T Technology > T Technology (General) > T58.8 Productivity. Efficiency T Technology > TP Chemical technology > TP155.7 Chemical processes. T Technology > TP Chemical technology > TP669 Oils, fats, and waxes
Divisions:	Faculty of Vocational > 24305-Industrial Chemical Engineering
Depositing User:	Alya Rachmadina
Date Deposited:	30 Jul 2026 03:15
Last Modified:	30 Jul 2026 03:15
URI:	http://repository.its.ac.id/id/eprint/140335

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