Studi Peningkatan Proses Produksi 1-Butene Melalui Optimisasi Yield 1-Butene Dengan Feed Dari Byproduct MTBE Unit

Perdana, Muhammad Ariq Perdana (2026) Studi Peningkatan Proses Produksi 1-Butene Melalui Optimisasi Yield 1-Butene Dengan Feed Dari Byproduct MTBE Unit. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

1-Butene dalam industri petrokimia digunakan sebagai bahan baku utama dalam pembuatan Linear Low Density Polyethylene (LLDPE), High Density Polyethylene (HDPE), dan berbagai produk kimia lainnya. Pada Unit B1MTBE PT Chandra Asri Pacific Tbk, fluktuasi karakteristik feed Raffinate-2 memengaruhi kinerja pemisahan distilasi sehingga menurunkan yield 1-Butene. Jadi diperlukan optimasi kondisi operasi untuk meningkatkan yield tanpa meningkatkan konsumsi energi secara signifikan. Penelitian ini bertujuan menganalisis pengaruh variabel operasi terhadap yield 1-Butene, menentukan kondisi operasi optimum menggunakan Response Surface Methodology (RSM) dengan desain Box-Behnken Design (BBD), serta mengevaluasi dampaknya terhadap konsumsi energi dan manfaat ekonomi. Simulasi menggunakan Aspen HYSYS yang telah divalidasi menggunakan data operasi aktual pabrik. Variabel bebas yang digunakan meliputi rasio split, mass flow feed Raffinate-2, dan komposisi 1-Butene feed, sedangkan variabel respon adalah yield 1-Butene. Hasil menunjukkan bahwa mass flow feed Raffinate-2 merupakan variabel yang paling dominan memengaruhi yield, diikuti rasio split, sedangkan komposisi 1-Butene feed tidak berpengaruh signifikan pada rentang penelitian. Model RSM-BBD menghasilkan model linier yang signifikan dengan F-value sebesar 4,38, p-value 0,0321, dan R² sebesar 0,8493. Kondisi operasi optimum meningkatkan yield 1-Butene dari 95,56% menjadi 98,51% atau meningkat sebesar 2,96%. Optimasi juga menurunkan konsumsi energi total sebesar 65,83 kW, menghasilkan penghematan biaya utilitas sebesar USD 21.657/tahun, pengurangan HC loss senilai USD 2.053.800/tahun, serta tambahan pendapatan sebesar USD 192.000/tahun, sehingga total manfaat ekonomi mencapai USD 2.267.457/tahun. Hasil penelitian menunjukkan bahwa integrasi Aspen HYSYS dan RSM-BBD efektif untuk meningkatkan yield, menurunkan konsumsi energi, serta meningkatkan keuntungan operasional, sehingga dapat dijadikan pedoman dalam penyesuaian kondisi operasi ketika karakteristik feed Raffinate-2 berubah.
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1-Butene is an important petrochemical product used as a primary feedstock for the production of LLDPE, HDPE, and other chemical intermediates. At the B1MTBE Unit of PT Chandra Asri Pacific Tbk, fluctuations in Raffinate-2 feed characteristics affect the distillation process and reduce the 1-Butene yield. Therefore, optimizing operating conditions is essential to improve yield without significantly increasing energy consumption.This study aims to analyze the effects of operating variables on 1-Butene yield, determine the optimum operating conditions using Response Surface Methodology (RSM) with a Box-Behnken Design (BBD), and evaluate their impacts on energy consumption and economic performance. Process simulations were conducted using Aspen HYSYS and validated against actual plant operating data. The independent variables were split ratio, Raffinate-2 feed mass flow, and 1-Butene feed composition, while the response variable was the 1-Butene yield.The results showed that Raffinate-2 feed mass flow was the most influential factor affecting yield, followed by the split ratio, whereas the 1-Butene feed composition had no significant effect within the investigated range. The RSM-BBD analysis produced a significant linear model with an F-value of 4.38, p-value of 0.0321, and an R² of 0.8493. The optimum operating conditions increased the 1-Butene yield from 95.56% to 98.51%, representing a 2.96% improvement. Furthermore, optimization reduced total energy consumption by 65.83 kW, generated annual utility cost savings of USD 21,657, reduced HC loss by USD 2,053,800 annually, and increased annual revenue by USD 192,000, resulting in a total economic benefit of USD 2,267,457/year. These findings demonstrate that integrating Aspen HYSYS with RSM-BBD provides an effective approach for improving process performance, enhancing yield, reducing energy consumption, and supporting more efficient plant operation.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	1-Butene, Aspen HYSYS, Response Surface Methodology, Box-Behnken Design, Optimasi Proses, Raffinate-2, Yield, Efisiensi Energi, 1-Butene, Aspen HYSYS, Response Surface Methodology, Box-Behnken Design, Process Optimization, Raffinate-2, Yield, Energy Efficiency.
Subjects:	T Technology > TP Chemical technology > TP155.7 Chemical processes.
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Chemical Engineering > 24101-(S2) Master Thesis
Depositing User:	Muhammad Ariq Perdana
Date Deposited:	31 Jul 2026 03:54
Last Modified:	31 Jul 2026 03:54
URI:	http://repository.its.ac.id/id/eprint/141713

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