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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Journal of Engineering and Technological Sciences Konversi Jurnal Teknik Applied Engineering, Innovation, and Technology
Hari Rionaldo
Department of Chemical Engineering, University of Riau, Jl. HR Subantas KM 12,5, Kampus Bina Widya, Simpang Baru,Pekanbaru, Riau 28293
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Simulation of dimethyl ether production as LPG substitute using LNG from Arun terminal with tri-reforming and direct synthesis method Rahmatullah, Faiprianda Assyari; Pamungkas, Tegar; Mutia, Sarah; Zulfansyah, Zulfansyah; Rionaldo, Hari
Konversi Vol 13, No 1 (2024): April 2024
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v13i1.17946

Abstract

Increased demand for LNG compels Indonesia to import to meet these needs. Substituting LNG with alternative fuel emerges as a strategy to reduce LPG imports. One such alternative can be used for LPG substitution is Dimethyl Ether. Dimethyl ether is a colorless compound possesses a heating value of 30,5 MJ/kg and an energy equivalency with LPG ranging between 1,56 – 1,76. Dimethyl ether can be directly synthesized from synthetic gas produced through natural gas reforming. Production of synthetic gas from natural gas employs the tri-reforming method which integrating steam reforming, dry reforming, and partial oxidation methods in a single reactor offering optimal energy utilization advantages and minimal environmental impact. Dimethyl ether production from synthetic gas is using direct synthesis method, combining methanol synthesis and dehydration in a single reactor providing high conversion advantages compared to indirect synthesis method. Simulation was carried out using process simulator program ASPEN Plus V11. Based on the simulation results, dimethyl ether yield and selectivity is 99.62%.
Techno-Economic Analysis of Linear Low-Density Polyethylene Plant Using Sclairtech Process Optimized by Heat Integration Prasetyo, Gandi; Rionaldo, Hari; Dharmayanti, Dian; Syafril, Novia
Applied Engineering, Innovation, and Technology Vol. 2 No. 1 (2025)
Publisher : MSD Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62777/aeit.v2i1.61

Abstract

Polyethylene (C2H4)n is a crucial industrial material in the plastics industry, produced via ethylene polymerization. The rising demand for Linear Low-Density Polyethylene (LLDPE) and advancements in process technology make the establishment of an LLDPE plant in Indonesia feasible. This paper aims to evaluate the feasibility of such a plant using the Sclairtech process. The heat exchanger network is designed using the Temperature Interval and Composite Curve Methods. The economic feasibility analysis, performed using the study estimate method with bare module costs, shows significant utility savings through heat integration, reducing utility costs from USD 3,933 to USD 1,510 per hour. The plant's Payback Period (PBP) is 3.21 years, with a net present value (NPV) of USD 250.48 million, an internal rate of return (IRR) of 16%, and a breakeven point of 31.04%. Sensitivity analysis indicates the plant remains profitable despite a 65.22% increase in raw material costs and a 100% reduction in product prices. Based on the Heat Integration design and economic analysis, the LLDPE plant using the Sclairtech process is deemed economically viable.
Co-Authors Anggrayni, Elma Dharmayanti, Dian Dizikri, Dizikri Hasudungan, Janso Hutagalung, Maha Putra M. Iwan Fermi Mazlani Mutia, Sarah Nurhayati Nurhayati Pamungkas, Tegar Panjaitan, Angga Marusaha Tamba Prasetyo, Gandi Rafi, M Khaidiz Rahmatullah, Faiprianda Assyari Randi Sanjaya, Randi Rizki, Juliana Siregar, Dompak M. Syafril, Novia Syahputra, Dede Warman Fatra, Warman Z Zulfansyah Zuchra Helwani, Zuchra Zulfansyah Zulfansyah