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All Journal Jurnal Profesi Insinyur Indonesia Journal of Chemical Engineering Research Progress
Ridani, Nuraida
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology Transportation

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Advancement of Methanol Purity in CO2 Hydrogenation Process Through Design Optimization, Multistage Compression Simulation, and Purification Model Refinement Verani, Serlyna Maulidya; Azhari, Tanaya Labita; Ridani, Nuraida; Nurardani, Muhammad Romy
Journal of Chemical Engineering Research Progress 2025: JCERP, Volume 2 Issue 1 Year 2025 (June 2025)
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/jcerp.20306

Abstract

Rising greenhouse gas emissions, particularly CO2, present significant environmental challenges. The goal of this study is to improve methanol synthesis using CO2 hydrogenation, with an emphasis on increasing purity. To accurately restrict temperature rises during CO2 compression, we did simulations with Aspen HYSYS V11 and a multistage compression approach.  Two notable alterations included the insertion of an absorber unit to improve methanol purity and the recycling of separator outputs. The results show that these process innovations save energy and raw resources while significantly improving methanol output. The findings demonstrate the viability of CO2 hydrogenation as an environmentally beneficial method of producing methanol, which reduces greenhouse gas emissions while still providing a viable chemical feedstock. Copyright © 2025 by Authors, Published by Universitas Diponegoro and BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Composite Curve Pada Teknologi Pinch Widayat, Widayat; Fauzan, O. K. Muhammad; Manulang, Amanda Nathalia Harti Marusaha; Salsabila, Elvira; Ratnawati, Ida; Ridani, Nuraida
Jurnal Profesi Insinyur Indonesia Vol 3, No 3 (2025): JPII:
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpii.2025.28240

Abstract

Teknologi pinch adalah teknik berdasar ilmu termodinamika yang digunakan untuk mengoptimalkan konsumsi panas pada sistem proses industri menggunakan perancangan dan optimasi jaringan penukar panas (Heat Exchanger Network/HEN). One tool utama pada pendekatan teknologi penukar panas adalah curve komposit yang memaparkan hubungan antara entalpi dan suhu aliran panas (panas/steam) dan aliran dingin (cooling). Penelitian ini membahas penerapan yang dilakukan pada aliran proses sebanyak 11 aliran proses (4 aliran panas dan 7 aliran dingin) dengan variasi ΔTmin sebanyak 10°C, 12°C, 14°C, 20°C dan 22°C. Parameter yang digunakan berupa kepanasan panas (thermal capacity), perubahan entalpi dan entalpi kumulatif pada setiap interval panas. Hasil yang didapatkan menginformasikan bahwa perurungan ΔTmin akan meningkatkan efisiensi pemanfaatan panas berakibat pada biaya instalasi yang mahal. Sebaliknya, ΔTmin yang makin besar akan menurunkan efisiensi tetapi mengurangi kompleksi sistem. Dengan demikian perlu ditentukan ΔTmin yang tepat. Kata kunci: pinch technology, composite curve, ΔTmin, heat integration, energy efficiency, Heat Exchanger Network
Co-Authors . Widayat Azhari, Tanaya Labita Fauzan, O. K. Muhammad Manulang, Amanda Nathalia Harti Marusaha Nurardani, Muhammad Romy Ratnawati, Ida salsabila, elvira Verani, Serlyna Maulidya