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Executive Summary Rancangan Pabrik Paraxylene Dari Toluene Proses Px-Plus Xp Dengan Desain Alat Utama Kolom Distilasi Toluena (T-102)
ABSTRACT
Paraxylene is an aromatic hydrocarbon compound with the molecular formula C8H10. It is used as a raw material for various end products such as purified terephthalic acid (PTA) and dimethyl terephthalate (DMT). PTA and DMT can be further processed for use in the plastics and textile industries. Additionally, paraxylene is utilized in the production of resins, synthetic fibers, plasticizers, gasoline additives, leather industries, as well as cleaning agents and thinners for paints and varnishes. However, Indonesia's demand for paraxylene is currently met through imports from other countries. Therefore, establishing a paraxylene plant will reduce import dependency and increase national revenue. The proposed paraxylene plant is planned to be built in the industrial area of Cilegon, Banten Province, in 2028, with a production capacity of 100,000 tons/year.
Paraxylene production is conducted using the toluene disproportionation process with the aid of ZSM-5 catalysts through the PX-Plus XP process, yielding paraxylene as the main product and benzene as a byproduct. The reaction takes place in a fixed-bed multitube reactor under operating conditions of 250°C and 30 atm, achieving a toluene conversion rate of 30%. The paraxylene is purified using a distillation column to produce a final product with 99.9% purity. The plant’s utility requirements include steam, water, and electricity supply units. The equipment is equipped with safety instruments and process control systems to ensure smooth production operations.
The paraxylene plant requires a fixed capital investment of IDR 2.557.157.393.599, a working capital investment of IDR 451.263.069.459, and a total production cost of IDR 2.869.482.696.754. The annual revenue from product sales is projected at IDR 5.235.495.843.740. Profitability analysis indicates a net present value (NPV) of IDR 2.636.981.426.875, an internal rate of return (IRR) of 18,36%, a break-even point (BEP) at 35,47% production capacity, and a payback period (PBP) of 3,8 years. Based on these results, the design of the paraxylene plant using the PX-Plus XP process from toluene is considered feasible and a profitable investment.
Keywords: Economic Analysis, Paraxylene, Reactor, Toluene
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