Syafi, Zaidan Ain Nur (2026) Laporan Magang Mandiri PT Energi Agro Nusantara. Project Report. [s.n]. (Unpublished)
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Abstract
Kegiatan magang dilaksanakan di PT Energi Agro Nusantara (EAN), Mojokerto, sebuah perusahaan yang bergerak di bidang produksi bioetanol berbasis molases dengan kapasitas produksi mencapai 100 kL/hari. Tujuan pelaksanaan magang adalah memahami proses produksi bioetanol, penerapan sistem utilitas dan pengendalian mutu, serta menyelesaikan studi troubleshooting pada Departemen Produksi. Selama kegiatan magang, dilakukan pengamatan terhadap proses fermentasi, refinery, sistem utilitas, pengolahan limbah, serta penyusunan Process Flow Diagram (PFD), Process and Instrumentation Diagram (P&ID), neraca massa, neraca energi, dan analisis potensi bahaya menggunakan metode HAZOP. Studi troubleshooting difokuskan pada permasalahan karamelisasi yang menyebabkan fouling pada Plate and Frame Heat Exchanger (PHE) di jalur fermented wash dan spent wash. Analisis dilakukan menggunakan pendekatan perhitungan perpindahan panas dan mekanika fluida untuk menentukan kebutuhan luas perpindahan panas, jumlah plate, serta pressure drop selama kondisi operasi aktual. Hasil perhitungan menunjukkan kebutuhan luas perpindahan panas sebesar 99,34 m² dengan jumlah 155 plate. Selain itu, dilakukan evaluasi parameter operasi sebagai dasar penyusunan rekomendasi teknis guna meminimalkan pembentukan fouling akibat karamelisasi. Rekomendasi yang diberikan meliputi pengendalian temperatur operasi, optimasi laju alir fluida, penerapan cleaning in place (CIP) secara berkala, serta pemantauan parameter proses secara berkelanjutan. Pelaksanaan magang memberikan pemahaman komprehensif mengenai operasi industri bioetanol, integrasi proses fermentasi dan pemurnian, serta penerapan prinsip teknik kimia dalam penyelesaian permasalahan nyata di industri. Hasil kegiatan ini diharapkan dapat menjadi masukan bagi perusahaan dalam meningkatkan efisiensi perpindahan panas, mengurangi risiko fouling, serta mendukung keberlanjutan proses produksi bioetanol.
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The internship was conducted at PT Energi Agro Nusantara (EAN), Mojokerto, an Indonesian company specializing in molasses-based bioethanol production with a production capacity of 100 kL/day. The internship aimed to enhance the understanding of bioethanol manufacturing processes, utility systems, quality control, and the application of chemical engineering principles in solving industrial problems through a troubleshooting study. During the internship, observations were carried out on the fermentation, refinery, utility, and wastewater treatment units. In addition, a Process Flow Diagram (PFD), Process and Instrumentation Diagram (P&ID), mass balance, energy balance, and Hazard and Operability (HAZOP) analysis were developed to support process evaluation. The troubleshooting study focused on caramelization-induced fouling in the Plate and Frame Heat Exchanger (PHE) used in the fermented wash and spent wash process streams. Heat transfer and fluid mechanics calculations were performed to determine the required heat transfer area, the number of plates, and the pressure drop under actual operating conditions. The results indicated that the required heat transfer area was 99.34 m², requiring 155 plates to achieve the desired thermal performance. Furthermore, operational parameters affecting fouling formation were evaluated to formulate technical recommendations for improving heat exchanger performance. The proposed recommendations include optimizing operating temperature and flow rate, implementing periodic Cleaning-in-Place (CIP), and continuously monitoring process parameters to minimize caramelization and fouling formation. Overall, the internship provided comprehensive insight into industrial bioethanol production, the integration of fermentation and refining processes, and the practical application of chemical engineering concepts to real industrial challenges. The findings are expected to contribute to improving heat transfer efficiency, reducing fouling occurrence, and supporting the sustainable operation of bioethanol production at PT Energi Agro Nusantara.
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