KELAYAKAN EKONOMI PADA PRARANCANGAN PABRIK FTALAT ANHIDRIDA KAPASITAS 45.000 TON/TAHUN

Abstract

A pre-design of plant to produce 45.000 tons/year phthalic anhydride from 47,200
tons/year ortho-xylene uses Davy McKee process with vanadium pentaoxide catalyst in non
isothermal - non adiabatic fixed bed multitubes reactor that operated at 2 atm and 340-
360oC. Phthalic anhydride is intermediate chemical that raw material and product price
depend on the global economical condition. From the design basis, the economical
parameters analysis show that after tax, Profit on Sales (POS) is 7.78%, Return On
Investment (ROI) is 34.76%, Pay Out Time (POT) is 2.23 years, Break Event Point (BEP) is
43.71%, Shut Down Point (SDP) is 28.16% and Discounted Cash
Flow Rate of Return (DCFRR) is 22.40%. All economical parameters requirements for plant
design are complied. The range of optimum commercial plant capacity is 26,221 to 71,210
tons/year. Due to price fluctuation, plant can be run normally on range of increasing raw
material price +6.79% and decreasing product price -6.92% from price basis and it is better
than South East Asia market condition. It is concluded that the phthalic anhydride plant is
feasible to be established in Indonesia.