CD Skripsi
Rancangan Pabrik Paraxylene Dari Toluene Proses Lummus Dengan Desain Alat Utama Reaktor Toluene Disproportionation (R-101)
ABSTRACT
Paraxylene (C₈H₁₀) is an aromatic hydrocarbon compound widely used as the primary raw
material in the production of purified terephthalic acid (PTA) and dimethyl terephthalate (DMT)
for the manufacture of polyester and polyethylene terephthalate (PET). Paraxylene derivatives are
extensively applied in the textile fiber, film, resin, packaging plastic, and chemical additive industries.
The demand for paraxylene in Indonesia continues to rise along with the growth of the textile and
packaging sectors. However, domestic production capacity remains limited, resulting in the majority
of demand being met through imports. Therefore, establishing a paraxylene plant is expected to
reduce import dependency and strengthen the national petrochemical industry resilience.
The paraxylene plant will be established in Tuban, Central Java, in 2027 with a production
capacity of 270,000 tons/year. Paraxylene is produced through the toluene disproportionation
process with the aid of a ZSM-5 catalyst and the application of Lummus technology. The process
takes place in a fixed-bed multitube reactor at 445°C and 20 atm, achieving a product conversion of
31% with a selectivity of 94.7%, resulting in mixed xylenes (o-xylene, m-xylene, and p-xylene) and
benzene. Subsequent steps involve isomer separation and crystallization to obtain paraxylene crystals
with high purity of up to 99.9%. The by-product, benzene, is separated through a distillation unit
and can be utilized as a raw material for other chemical industries. The plant’s utilities include water
supply, steam, electricity, and cooling systems. The equipment is equipped with safety instruments
and process control systems to ensure reliable plant operations.
The economic analysis shows that the Total Capital Investment (TCI) is Rp
4,434,914,977,773, the Total Production Cost (TPC) is Rp 7,760,713,316,494, and the Working
Capital Investment (WCI) is Rp 886,982,995,555. Profitability analysis results indicate a Net
Present Value (NPV) of Rp 12,720,268,019,759, an Internal Rate of Return (IRR) of 24.45%, a
Break-Even Point (BEP) at 46.79% of capacity, and a Payback Period (PBP) of 2.44 years. Based
on these profitability parameters, the establishment of the paraxylene plant is considered feasible and
a profitable investment.
Keywords: Economic Analysis, Paraxylene, Reactor, Lummus.
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