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All Journal Journal of Chemical Engineering Research Progress
Alghiffary, Farrel Dzakwan
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Chemical Engineering, Chemistry & Bioengineering Energy Engineering Materials Science & Nanotechnology

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Process Optimization of Cumene Production: Energy Efficiency Optimization and Conversion Enhancement through Heat Integration and Recycle Strategies Alghiffary, Farrel Dzakwan; Gempa, Alfandi Maulana; Nugroho, Nabiel Athallah Ayyubi; Syahid, Juan R.; Rajendra, Otniel Galih
Journal of Chemical Engineering Research Progress 2026: JCERP, Volume 3 Issue 1 Year 2026 (June)
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/jcerp.20576

Abstract

Cumene production via benzene–propylene alkylation is a highly exothermic process that requires effective thermal management. This study aims to optimize energy efficiency and enhance conversion performance in cumene production through the integration of reactor heat recovery and recycle strategies. To improve heat utilization efficiency, the process was modified by integrating a circulating heat transfer fluid system that captures reactor heat and reuses it for feed preheating, thereby reducing external utility demand. Additional heat released during effluent cooling is recovered to supply the mechanical energy required for pumping. The modified and baseline configurations were modeled using chemical process simulator and evaluated using a net energy (NE) framework. Results show that the basic process yields an NE of 3,119,682.58 kJ/h, while the modified process achieves 2,055,114.79 kJ/h, with 21,294,605.8 kJ/h of internal energy successfully recovered and reused. This demonstrates a substantial improvement in thermal integration and reduced reliance on external heating. Furthermore, the introduction of a vapor phase benzene recycle stream enhances benzene conversion, suppresses secondary alkylation, and increases cumene yield. Overall, the integrated heat recovery and recycle strategy significantly improves energy efficiency, conversion performance, and sustainability in cumene 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).
Energy Optimization of Methanol Production using CO₂from Natural Gas Sweetening via Reactor Heat Recovery, Compressor Integration, and Cooling Water Reuse Alghiffary, Farrel Dzakwan; Perdana, Jaguar Mulia; Thomson, Theona Melinda; Karima, Dania Alya; Nathania, Alma Camila; Rahim, Renny Gustiara; Putri, Cahya Kamila Ramadhani
Journal of Chemical Engineering Research Progress 2026: Just Accepted Manuscript and Article In Press 2026
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/jcerp.20705

Abstract

Methanol production via CO₂ hydrogenation is an efficient alternative for supporting energy sustainability and reducing carbon emissions; however, conventional processes still face limitations in energy efficiency and resource utilization. This study aims to optimize the methanol production process through the integration of heat recovery, compressor energy utilization, and water recycling. Simulations were conducted using Aspen HYSYS by comparing baseline process conditions with modified process conditions under the same operating conditions. The results show that integrating heat from the reactor effluent and the cooling unit reduces external energy requirements, while the water recycling system successfully reduces fresh water usage by up to 100%. Additionally, heating energy requirements decreased by 27.21%, and compressor energy needs were fully met through internal energy recovery. From an economic perspective, significant operational cost savings were achieved, particularly in steam consumption, without compromising product quality, as methanol purity remained at 97.91%. Overall, the integration of mass and energy in this process has proven capable of improving efficiency, reducing costs, and supporting the sustainability of CO₂-based methanol production.
Co-Authors Gempa, Alfandi Maulana Karima, Dania Alya Nathania, Alma Camila Nugroho, Nabiel Athallah Ayyubi Perdana, Jaguar Mulia Putri, Cahya Kamila Ramadhani Rahim, Renny Gustiara Rajendra, Otniel Galih Syahid, Juan R. Thomson, Theona Melinda