Prarancangan Pabrik Pembuatan Pentaerythritol dari Formaldehida, Asetaldehida, dan Natrium Hidroksida menggunakan Kombinasi Reaksi (Crossed Aldol-Cannizzaro dengan Kapasitas 8.100 Ton/Tahun

Abstract

The intense competition in the global market has encouraged industrial growth in Indonesia resulting in an increase in demand for raw materials in the chemical industry, one of which is pentaerythritol compounds. These needs are still met by imports, so the existence of a pentaerythritol plant in Indonesia can be a solution. This plant is designed with a production capacity of 8,100 tons/year and operates for 330 days a year. The raw materials used are formaldehyde (CH2O) 1,998.009 kg/hour, acetaldehyde (CH2O4) 380.698 kg/hour, sodium hydroxide (NaOH) 366.388 kg/hour, and formic acid (CH2O2) 57.673 kg/hour. The processes that occur in this plant proposal are the raw material preparation process, the combination reaction process, the neutralization process, and the product separation and purification process. The combination reaction (crossed aldolcannizaro) occurs in a stirred tank flow reactor operating at 45oC and 1 atm pressure for 45 minutes to produce pentaerythritol (C5H12O4) and residual reactants. The pentaerythritol solution is then neutralized in the neutrallizer and separated and purified from the remaining reactants based on their boiling points and solubility. The factory is planned to be built on Jalan Kemiri, Kec. Kebakkramat, Central Java with a land area of 20,410 m². The business entity form of the planned company is a Limited Liability Company (PT) with a line organization form with 171 workers. The economic feasibility analysis shows investment capital of Rp311,180,000,167, production costs of Rp367,541,765,724, annual sales of Rp642,612,569,852, and net profit of Rp212,409,674. 948 with a profit margin (PM) of 43.377%; return on investment (ROI) of 38.992%; break even point (BEP) of 37.464%; pay out time (POT) of 2.56 years, return on network (RON) of 64.986%; and internal rate of return (IRR) of 38.940%. Based on the economic results, it can be concluded that this pentaerythritol manufacturing plant is feasible.