CD Skripsi
Rancangan Pabrik Propionic Acid Proses Basf Dengan Desain Alat Utama Kolom Distilasi Air-Asam Propionat-Nikel Karbonil (T-101)
ABSTRACT
Propionic acid is a chemical that is widely used as an animal feed preservative, herbicide and food preservative. Propionic acid is also used in the manufacture of calcium and sodium propionate as an additive for preservatives. Propionic acid products have a fairly wide market so demand will definitely increase from year to year, but availability in Indonesia is still not there. In 2022, based on data obtained from BPS, Indonesia will import 10.945 tonnes of propionic acid to meet Indonesia's demand of 4.379 tonnes/year. Therefore, establishing a propionic acid factory will provide profitable results. The factory location is planned in the Cilegon industrial area, West Java and is built on land with an area of 17,3 ha. The factory operates 24 hours per day and 330 days per year.
The process technology used is the reppe process or ethylene carbonylation (BASF Process). This process technology synthesizes raw materials in the form of ethylene with carbon monoxide and water, then the reaction takes place using a nickel carbonyl catalyst in a bubble column reactor at conditions of 285˚C and 230 atm. The process takes place exothermically. The output of the bubble column reactor is crude propionic acid which is followed by a separation and purification process to obtain a propionic acid product with a purity of 99,5%. The propionic acid factory requires utilities in the form of factory water of 619.444,058 kg/hour, steam of 2.370,145 kg/hour, electric power of 8.192,571 kW/hour and fuel in the form of LNG of 3.086,32 L/hour. The propionic acid factory produces liquid waste which is processed using an activated sludge process.
The factory is planned to begin construction in 2024. The total capital investment (TCI) of the BASF process propionic acid factory is Rp 344.837.237.164. Total production costs (TPC) amounted to Rp 1.099.900.082.275. Annual sales of propionic acid products are Rp 1.236.171.733.322. Economic analysis shows that the Return of Investment (ROI) is 35%, Payback Period (PBP) is 2,10 years, Net Present Value (NPV) is Rp 441.010.445.934 with a discount rate of 15%, Internal Rate of Return (IRR) of 37,89% and Break Event Point (BEP) at 40% production capacity. From the results of this economic analysis, the BASF process propionic acid factory with a capacity of 57.500 tons/year is very interesting to consider establishing in Indonesia because it has quite good prospects.
Key words: Propionic acid, ethylene, carbon monoxide, reppe process
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