Pra Rancangan Pabrik Phthalic Anhydride Proses Von Heyden Kapasitas 45.000 Ton/Tahun

Abstract

Preliminary design of Phthalic Anhydride for 45000 ton/year of capacities O-xylene and Air (oxygen) oxidation of Pthalic Anhydride with purity 99%. This plant is planned to be built in Tangerang, Banten. It covers 35000 m2 of land and needs 146 employees. It works continually for 24 hours /day and 330 day/year. This process is using Von Heyden Method. The process of reaction is exothermic using V2O5 as catalyst to produce Phthalic Anhydride in Fixed Bed Multitube Reactor at 350oC and 1,4 Atm. Process unit requires 5390.10 kg/hour of O-xylene and 96074.01 kg/hour of air, whereas utility unit needs 133223.9788 kg/hour water for cooling, 1152,576 kg/hour water for domestic, 97589,69147 kg/hour of steam, 194,403 KW electricity , 476,394 kg/hour of fuel oil, Economic evaluation shows that Fixed Capital of Rp 165.474.829.874,14, profit before taxes Rp. 75.563.373.262,23 profit after taxes Rp.52.894.361.283,56,.From feasibility studies result Break Even Point (BEP) of 45,33% (BEP requisite in Indonesia 40-60%), Shut Down Point (SDP) of 20,53% and Discounted Cash Flow Rate of Return (DCFR) of 34%. Meanwhile Return on Investment Before Taxes (ROIb) of 26% (ROI b requiste for high risk plant > 44%) and Return on Investment After Taxes (ROI a) of 18%. Pay Out Time Before Taxes (POTb) 2,7 yearsa (POT b requires for high risk plant < 2 years) and Pay Out Time After Taxes (POT a) 3,472% in a row. Based on this economic evaluaton it can be concluded that Pthalic Anhydride Plant of 45000 ton/year is economically feasibility.