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Journal of Chemical Engineering Research Progress
Published by Universitas Diponegoro
ISSN : -     EISSN : 30327059     DOI : https://doi.org/10.9767/jcerp
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Energy Engineering Materials Science & Nanotechnology
The Journal of Chemical Engineering Research Progress (e-ISSN: 3032-7059; Short Abbreviation Title: J. Chem. Eng. Res. Prog.) is an international research journal and invites contributions of original and novel fundamental research. The JCERP journal aims to provide an international forum for the presentation of original fundamental research, interpretative reviews and discussion of new developments in chemical engineering discipline. Papers which describe novel theory and its application to practice are welcome, as are those which illustrate the transfer of techniques from other disciplines, including: fundamentals of chemical engineering; advanced materials related to chemical engineering; applied/industrial chemistry; chemical reaction engineering kinetics; chemical reactor design and optimization; chemical engineering process design and computation; etc. related to chemical engineering discipline.
Arjuna Subject : Teknik Kimia (semua kategori) - Kimia Proses dan Teknologi
Articles 91 Documents
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Enhancing Energy Efficiency in Methanol-to-DME Conversion through Process Modification and Heat Integration Salsabila, Salma; Saputri, Meirisa Ayu; Sirait, Jorsch Pieter Benhard; Kurniawan, Samuel; Amelia, Sera; Putra, Alvin Ananta
Journal of Chemical Engineering Research Progress 2025: JCERP, Volume 2 Issue 2 Year 2025 (December)
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/jcerp.20573

Abstract

Enhancing energy efficiency in dimethyl ether (DME) production is critical for reducing utility consumption and improving process sustainability. This study investigates the impact of targeted modifications to the methanol dehydration system on thermal performance and operational stability. The proposed configuration incorporates an expanded heat-integration network, additional feed-conditioning units, and a split-recycle arrangement to optimize energy recovery and maintain reactor stability. A water knock-out vessel and supplementary exchangers were also integrated to improve separation efficiency and reduce reboiler duty. Comparative process simulations were performed using with the NRTL thermodynamic model to evaluate the baseline and modified flowsheets. Results indicate that the optimized design achieves a 35.55% increase in energy efficiency while preserving the original methanol conversion level of 50.35%, confirming that reduced energy demand does not compromise reaction performance. These findings demonstrate that the proposed modifications provide a more energy-efficient and industrially viable configuration for DME production, offering a strong foundation for future optimization and process intensification strategies. 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).
Optimizing Propylene Glycol Purity and Profitability through Variations in Reactor Temperature and Distillation Anditariani, Klara Dwi Ajeng; Lestari, Dea Arum Dwi; Putri, Jesica Fernanda; Fauzia, Lilia Hasna; Prastica, Puspa Sandra
Journal of Chemical Engineering Research Progress 2026: JCERP, Volume 3 Issue 1 Year 2026 (June) (Issue in Progress)
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/jcerp.20594

Abstract

Propylene glycol (PG) is a multifunctional diol widely used in food, pharmaceutical, cosmetic, and chemical industries due to its favorable physicochemical properties, high water solubility, and low toxicity. This study examines PG production through non-catalytic hydration of propylene oxide, focusing on the effect of reactor inlet temperature on process efficiency and economic performance. In the process, propylene oxide and water are mixed and fed into a continuous stirred-tank reactor (CSTR), followed by distillation for product purification. Temperature variations from 23.9 °C to 80 °C were analyzed to determine their impact on conversion and profitability. At 23.9 °C, the process was economically unfavorable, yielding a negative profit of –161.09 $/hour. Increasing the inlet temperature to 40 °C significantly improved conversion and distillation efficiency, resulting in a profit of 191.09 $/hour (552,689 $/year). Further temperature increases provided no additional economic benefit and increased energy demand. Therefore, 40 °C is recommended as the optimal operating condition, offering the best balance between technical performance and profitability. Copyright © 2026 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).
Recovery and Utilization of Waste Heat from Cooler Effluent for Preheating Applications Sulistiana, Aulia Indrastuti; Adinda, Aulia Putri; Hakim, Bizan Abdurrahman; Izza, Fionna Rahmatul; Dianingratri, Xaviera Fidela
Journal of Chemical Engineering Research Progress 2026: JCERP, Volume 3 Issue 1 Year 2026 (June) (Issue in Progress)
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/jcerp.20597

Abstract

Maleic anhydride (MA) is an important intermediate for polymers, coatings, and fine chemicals, yet its production through n-butane oxidation remains energy-intensive due to the highly exothermic nature of the reaction. Inefficient heat management leads to excessive utility demand and reduced process performance. This study aims to improve energy efficiency by recovering and reusing waste heat from the cooler effluent for preheating applications. The process is simulated using Aspen HYSYS to compare the basic configuration with a modified design that integrates a recycle stream from the cooler outlet to the heater. The modified configuration demonstrates a significant reduction in external energy consumption, achieving a 43% energy saving compared to the basic process. Net energy decreases markedly, while overall energy efficiency increases to 86%. The recycle stream stabilizes temperature profiles, reduces utility demand, and enhances process reliability. These improvements confirm that waste heat recovery through heat integration provides a practical and effective approach to optimize maleic anhydride production. In conclusion, the modification advances the current state of process design by demonstrating that simple operational changes can deliver substantial energy savings and support sustainable chemical manufacturing. The findings highlight the potential application of waste heat recovery strategies in other exothermic oxidation systems and provide a foundation for future studies on coupling heat integration with advanced separation schemes. Copyright © 2026 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).
Simulation and Optimization of Ammonia Converter on Increasing the Mole Percent of Ammonia Products in the Ammonia Plant Through Modification Process Hafidza, Raissa Nur; Soesilo, Emily Taqiy Ramadhani; Bilbina, Asvia Icha; Ramadani, Abdulhaq Mahatir; Aqila, Raihan Yafi
Journal of Chemical Engineering Research Progress 2025: JCERP, Volume 2 Issue 2 Year 2025 (December)
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/jcerp.20592

Abstract

Ammonia production efficiency is strongly influenced by temperature management within the multi-bed converter, where deviations from optimal conditions often reduce the final ammonia mole fraction compared to design expectations. To address this challenge, the ammonia synthesis loop was modified by adding a cooler and a heat exchanger between Bed-2A and Bed-2B to achieve more controlled inter-stage temperatures and improve equilibrium conversion. A complete process model was constructed in process simulation software using actual operating data, allowing evaluation of the original thermal profile and ammonia formation across each catalytic bed, followed by simulation of the modified configuration to quantify performance improvements. The optimized arrangement successfully increased the final ammonia mole fraction from 15.97% to 17.74%, approaching the design target of 19.02%, while maintaining temperatures closer to the ideal range for exothermic synthesis reactions. These results highlight that carefully targeted thermal adjustments and strategic heat integration can enhance reaction efficiency, reduce temperature-induced conversion losses, and provide a practical, implementable pathway for improving ammonia yield in existing industrial plants. 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).
Process Modification for Energy Demand Reduction in Acetic Acid Production Ramadhan, Anggita Fauziah; Saputri, Erike Ultania; Maulida, Farica Aprilia; Maulida, Hani; Priyanto, Khayla Anggraini
Journal of Chemical Engineering Research Progress 2026: JCERP, Volume 3 Issue 1 Year 2026 (June) (Issue in Progress)
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/jcerp.20593

Abstract

Methanol carbonylation via the Cativa Process is the dominant technology for acetic acid production, offering high selectivity and operational efficiency. In the initial design of plants based on this process, however, heating energy demand was substantial, particularly during the methanol preheating stage prior to compression, which increased operating costs. Energy optimization is therefore critical to improving the economic viability of the process. This study aims to reduce utility energy demand through modifications in the feed preheating stage. The modification involved installing heat exchangers in the stream supplying the main heater and utilizing the recycle stream as an internal heat source. Simulation results demonstrated a significant reduction in the heating load of the main heater, thereby lowering steam demand compared with the original design. Overall, the total heat load decreased by 102,015.82 kJ/h, equivalent to approximately 22.27% relative to baseline conditions. These findings confirm that simple heat integration in the preheating stage can substantially enhance energy efficiency without compromising process performance. Copyright © 2026 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).
Optimizing Hydrogenation Production via Recycle Loop in Aspen HYSYS Simulated Water Gas Shift Reaction: Kinetic and Thermodynamic Analysis Adi, Christopher Beryl Nugraha; Agus, Thania Nurjulianti; Hanifah, Naurah Dwicalista; Ridho, Muhammad; Leonica, Virnanda Namia
Journal of Chemical Engineering Research Progress 2026: JCERP, Volume 3 Issue 1 Year 2026 (June) (Issue in Progress)
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/jcerp.20602

Abstract

Hydrogen production via the water–gas shift (WGS) reaction plays a central role in modern energy systems, where maximizing the conversion of carbon monoxide (CO) into hydrogen (H₂) and carbon dioxide (CO₂) is essential for process efficiency. This study develops a detailed Aspen HYSYS process model to simulate the WGS reaction in an equilibrium reactor, emphasizing process intensification through a recycle loop. The baseline configuration achieves 80.07% CO conversion at 469.6 °C, whereas introducing a recycle stream elevates conversion to 99.90% at a significantly lower reactor temperature of −91.91 °C. This enhancement is accompanied by an increase in hydrogen production from 44.05 kmol/h to 55.01 kmol/h. The recycle stream rich in CO₂ at low temperature functions as an in situ cooling mechanism, shifting the exothermic equilibrium toward greater H₂ formation in accordance with Le Chatelier’s principle. This behavior also increases the thermodynamic equilibrium constant, reinforcing the conversion improvement. Kinetic evaluation relies on Gibbs free energy minimization to determine equilibrium compositions, while thermodynamic analysis underscores the dominant influence of temperature on reaction performance. The findings are consistent with trends reported in the literature and carry meaningful industrial implications. By achieving near-complete CO conversion without additional catalysts or membrane technologies, the recycle strategy reduces reliance on downstream purification units such as PSA and enhances overall energy efficiency through process intensification. Copyright © 2026 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).
Minimizing Net Energy Consumption in Vinyl Chloride Monomer (VCM) Production using Heat-Integrated Process Design Rachmantoro, Faith Nadine; Talitha, Alya Marsya; Maulana, Andanafifajri Ahda; Sitorus, Chyntami Fredella
Journal of Chemical Engineering Research Progress 2026: JCERP, Volume 3 Issue 1 Year 2026 (June) (Issue in Progress)
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/jcerp.20582

Abstract

Vinyl chloride monomer (VCM) is a key intermediate in polyvinyl chloride (PVC) production, and its manufacture via thermal cracking of 1,2-dichloroethane (EDC) is highly energy intensive. This study aims to reduce the net energy demand of the EDC–VCM section through a heat-integrated process design. A steady-state simulation of the conventional EDC cracking and distillation train was developed as an industrial benchmark. Based on this model, a modified configuration was introduced by adding a feed–effluent heat exchanger to recover heat from the hot reactor effluent and preheat the combined fresh and recycled EDC feed, while maintaining reactor operating conditions and product specifications. Energy performance was evaluated by comparing heating and cooling duties of major equipment. The heat-integrated design lowered the total utility requirement from 9.39 × 10⁷ to 7.93 × 10⁷ kJ/h, equivalent to a 15.5% reduction in external energy demand and reducing total energy cost by 4.3%. These results demonstrate that a simple heat-exchanger retrofit can significantly improve energy efficiency in VCM production, providing a practical route to reduce utility consumption and operational costs. Copyright © 2026 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).
Enhancing Methanol Production from Syngas through Heat Exchanger Modification and Vapour Distillate Flow Optimization Astuti, Diana Dwi Sri; Mu'amar, Azmi; Petra S, Agnes Theresia; Maizalfania, Adita; Dewi, Azifa Rusyda; Nurrahim, Syafirah
Journal of Chemical Engineering Research Progress 2025: JCERP, Volume 2 Issue 2 Year 2025 (December)
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/jcerp.20579

Abstract

Methanol production from syngas represents a promising route to strengthen energy independence and reduce reliance on imports. Conventional processes, however, are constrained by low per-pass conversion and unstable reactor inlet conditions, which limit efficiency and accelerate catalyst deactivation. This study investigates process modifications, focusing on two key strategies: the addition of a heat exchanger to stabilize and elevate reactor inlet temperatures, and the optimization of vapor distillate flow in the distillation column to enhance product purity. The modified process achieved a substantial improvement in methanol conversion, rising from 28.34% in the base configuration to 98.70%, while product purity increased from 97.68% to 98.95%. The heat exchanger ensured better thermal conditioning of recycle streams, reducing temperature fluctuations and improving reaction stability, whereas distillate flow optimization enhanced separation efficiency by balancing vapor and liquid reflux. These results demonstrate that targeted retrofitting of existing plants can deliver significant gains in efficiency, stability, and sustainability without the need for new construction. 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).
Improving Energy Efficiency with Reusage Outlet Stream of Heat Exchanger for Acrylic Acid Production from Propylene Oxidation Deanti, Nasywa Aprilia; Owen, Alexander Nathanael; Simarmata, Christine Elisha; Sidabukke, Jananda Kristian; Almasyah, Muhammad Aymanhadi Maulana; Silaen, Sarah Agnesia
Journal of Chemical Engineering Research Progress 2026: JCERP, Volume 3 Issue 1 Year 2026 (June) (Issue in Progress)
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/jcerp.20596

Abstract

Acrylic acid is a pivotal chemical intermediate extensively utilized in the manufacture of superabsorbent polymers, coatings, adhesives, and acrylate esters. Conventional production via propylene oxidation is markedly energy intensive and generates substantial by products, highlighting the imperative for process enhancement. The objective of this study is to advance energy efficiency in acrylic acid synthesis by reusing outlet stream heat from the heat exchanger during propylene oxidation. Aspen Plus simulations were employed to model propylene oxidation in a plug flow reactor under isothermal conditions with external cooling. The revised design incorporated heat integration strategies, most notably redirecting surplus heat from heater H-302 to fulfill the reboiler duty of distillation column T-304. Comparative evaluation demonstrated that this modification reduces external energy demand, augments conversion efficiency, and stabilizes thermal performance. In addition, the implementation of a heat transfer fluid recycle loop curtailed energy losses and enhanced operational consistency across both reactor and separation units. Mass and energy balance analyses confirmed that the modified configuration delivers superior efficiency while diminishing reliance on external utilities. Collectively, the findings underscore that process intensification coupled with heat integration provides a more sustainable and economically advantageous pathway for acrylic acid production. Copyright © 2026 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).
Process Optimization of Hydrogen Production via the Water–Gas Shift Reaction Using CO Recycle and Exothermic Reactor Operation Fitriana, Dias; Christiana, Nova; Kusumawati, Olivia Refa; Azzahra, Salsadila Nur Fatima
Journal of Chemical Engineering Research Progress 2026: JCERP, Volume 3 Issue 1 Year 2026 (June) (Issue in Progress)
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/jcerp.20571

Abstract

Hydrogen production via the Water–Gas Shift Reaction (WGSR) is limited by thermodynamic equilibrium, restricting carbon monoxide (CO) conversion and process efficiency. The baseline process achieved 80.07% CO conversion, while the modified design incorporated CO recycle and controlled exothermic operation at 200° C. These changes significantly improved CO conversion to approximately 98%, reducing raw material losses and enhancing hydrogen yield. The results demonstrate that integrating recycle streams and thermal management strategies effectively overcomes equilibrium constraints for sustainable hydrogen production. Copyright © 2026 by Authors, Published by Universitas Diponegoro and BCRE Publishing Group. This is an openaccess article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

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