Pra Rancangan Pabrik Dimetyl Phthalate dari Phtalic Anhydride dan Metanol dengan Katalis Amberlyst-15 Menggunakan Proses Esterifikasi Kapasitas 25.000 Ton/Tahun”

Sampurna, Rachmadani Tedja (2026) Pra Rancangan Pabrik Dimetyl Phthalate dari Phtalic Anhydride dan Metanol dengan Katalis Amberlyst-15 Menggunakan Proses Esterifikasi Kapasitas 25.000 Ton/Tahun”. Undergraduate thesis, UPN Veteran Jawa Timur.

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Abstract

Dimethyl phthalate (DMP) is an organic ester widely used in the chemical industry, particularly as a plasticizer and solvent. The establishment of a domestic DMP manufacturing plant is expected to support the development of Indonesia’s chemical industry and reduce dependence on imported products. This preliminary plant design aims to establish a dimethyl phthalate manufacturing plant with a production capacity of 25,000 tons per year, scheduled to commence operation in 2030. The plant is planned to be located in the Java Integrated Industrial and Port Estate (JIIPE), Sukomulyo Village, Manyar District, Gresik Regency, East Java, and will operate continuously for 330 days per year. The production process employs esterification using Amberlyst-15 as a heterogeneous solid acid catalyst. The process consists of two main reaction stages. In the first stage, phthalic anhydride reacts with methanol to produce monomethyl phthalate (MMP) at 90°C. In the second stage, MMP reacts with additional methanol in a reactive distillation column at 120°C to produce DMP and water. Excess methanol and the simultaneous separation of volatile components are employed to promote ester formation. The process is followed by product purification, methanol recovery, and recycling to improve material utilization. Amberlyst-15 is selected because it facilitates catalyst separation and reuse, reduces the need for neutralization, and offers lower corrosion potential than homogeneous acid catalysts. The economic analysis indicates a fixed capital investment of IDR 464,363,936,553.85, a pre-tax return on investment (ROI) of 27.50%, and a post-tax ROI of 20.62%. The payback period is approximately four years and one month, while the internal rate of return (IRR) is 15% and the break-even point (BEP) is 30%. Based on these results, the proposed plant offers a potential opportunity for domestic DMP production, subject to further verification of process performance and economic assumptions. **Keywords:** dimethyl phthalate, phthalic anhydride, methanol, Amberlyst-15, esterification, reactive distillation.

Item Type:	Thesis (Undergraduate)
Contributors:	Contribution Contributors NIDN/NIDK Email Thesis advisor Muljani, Srie NIDN0012116111 sriemuljani.tk@upnjatim.ac.id
Subjects:	T Technology > TP Chemical technology > TP155 Chemical engineering
Divisions:	Faculty of Engineering > Departement of Chemical Engineering
Depositing User:	Rachmadani Tedja Sampurna
Date Deposited:	12 Oct 2026 07:31
Last Modified:	12 Oct 2026 07:31
URI:	https://repository.upnjatim.ac.id/id/eprint/60678

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