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Journal of Vocational Studies on Applied Research
Published by Universitas Diponegoro
ISSN : -     EISSN : 26848090     DOI : -
Core Subject : Engineering,
Engineering
Journal of Vocational Studies on Applied Research [e-ISSN 2684-8090] is an open access peer reviewed journal published by Vocational School Diponegoro University Semarang Central Java Indonesia. Journal of Vocational Studies on Applied Research is an Journal publishing academic and industrial topics which covers area of interest on applied research as well as vocational studies. Research papers on Engineering, Science and Vocational Studies are welcomed. The Journal is double-blind reviewed which accepts Original Research Paper, Short Communication and Review Articles.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 2 Documents
 1 
Search results for , issue "2025: Just Accepted Manuscript and Article In Press 2025" : 2 Documents clear
Heat Integration Analysis of the Pre-Design Stage of an Ethyl Acetate Production Process using Pinch Technology Andini, Gesti
Journal of Vocational Studies on Applied Research 2025: Just Accepted Manuscript and Article In Press 2025
Publisher : Vocational College of Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jvsar.v0i0.30769

Abstract

Industrial heat exchanger networks often exhibit suboptimal energy utilization because of limited heat integration between process streams. This study aims to optimize a heat exchanger network (HEN) through the application of pinch analysis based on the initial process flowsheet. Hot and cold stream data, including inlet temperature, outlet temperature, and heat load, were first analyzed using Microsoft Excel and subsequently processed using the Heat Integration Network Tool (HINT). Pinch analysis was conducted by constructing composite curves to identify the pinch point, which represents the thermodynamic constraints of the system. Based on the analysis results, a redesigned heat exchanger network was developed in accordance with pinch principles, namely, the elimination of heat transfer across the pinch and the enhancement of internal heat recovery. The results demonstrate that the application of pinch analysis leads to a more efficient heat exchanger network configuration and reduces the reliance on external heating and cooling utilities compared with the initial system.
ANALYSIS OF THE PRELIMINARY DESIGN OF A METHYL CHLORIDE CHEMICAL PLANT VIA THE REACTION OF METHANOL AND HYDROGEN CHLORIDE WITH A PRODUCTION CAPACITY OF 45,000 TONS PER YEAR Wicaksono, Dimas Satrio
Journal of Vocational Studies on Applied Research 2025: Just Accepted Manuscript and Article In Press 2025
Publisher : Vocational College of Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jvsar.v0i0.30770

Abstract

The increasing demand for chemical intermediates in the national chemical industry highlights the need for domestic production to reduce reliance on imports, particularly for strategic products such as methyl chloride. This study presents a preliminary design of a methyl chloride chemical plant with a production capacity of 45,000 tons per year using methanol and hydrogen chloride as raw materials through a catalytic gas-phase synthesis process. The analysis includes mass and energy balance calculations, determination of major equipment specifications, and evaluation of process utility requirements. Furthermore, Pinch Technology Analysis is applied to optimize energy integration within the process by designing an efficient Heat Exchanger Network (HEN). The results indicate that the proposed process is technically feasible and capable of meeting product specifications while significantly reducing external utility consumption through effective internal heat recovery. The integration of preliminary plant design and Pinch Analysis demonstrates strong potential for improving energy efficiency and lowering operational costs, providing a solid basis for further detailed engineering and economic evaluation.

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