CD Skripsi
Executive Summary Rancangan Pabrik Asetaldehida – Etil Asetat Proses Eastman Chemical Dengan Desain Alat Utama Reaktor Hidrogenasi Asam Asetat (R-201)
ABSTRACT Acetaldehyde (CH₃CHO) is a highly important intermediate chemical, commonly used as a raw material for producing lactic acid, ethyl acetate, pentaerythritol, n-butanol, and various other chemical derivatives. The demand for acetaldehyde in Indonesia is currently still met through imports. Data from the Central Statistics Agency shows a significant increase in import volume between 2017 and 2022, in line with the rise in global acetaldehyde consumption, indicated by a Gross Annual Composite Growth Rate (CAGR) of 6.5% in 2022. Therefore, an acetaldehyde plant with a production capacity of 78,000 tons per year will be established in Dumai City, Riau, Indonesia. The production of acetaldehyde will utilize the Eastman Chemical process, which involves the hydrogenation of acetic acid to produce acetaldehyde, with ethyl acetate as a by-product. This process achieves an acetic acid conversion of approximately 46% with an acetaldehyde selectivity of 86%. The Eastman Chemical process for acetaldehyde production offers the advantage of yielding two products: acetaldehyde as the main product and ethyl acetate as a valuable by-product with high purity and market value. The production process consists of three main stages: raw material preparation, reaction, and separation and purification. The main equipment design features a fixed bed multitube reactor (R-201), where the acetic acid hydrogenation reaction takes place. The fixed bed multitube reactor (R-201) is designed to operate at a temperature of 300°C and a pressure of 17.2 bar. Plant utilities include water sourced from the Mesjid River, Sungai Sembilan District, Dumai, with a total water requirement of 251,718.9 kg/hour, and an electricity requirement of 3114.16 kW. The waste generated by the acetaldehyde-ethyl acetate plant includes liquid and gas effluents. This waste must be treated to meet quality standards before being discharged into the environment. Instrumentation used in the plant includes measuring devices (sensors) and displays (indicators), controllers, alarms, and recorders. The variables measured are temperature, flow rate, pressure, and liquid level. Profitability parameter analysis, assuming fixed raw material and product prices, yields the following data: an NPV of IDR 16,927,160,858,620.60, an ROI of 35.9%, a PBP of 4 years and 2 months, an IRR of 29.69%, and a BEP of 41.19%. With an IRR higher than the loan interest rate and a relatively short PBP, the construction of an acetaldehyde plant using the Eastman Chemical process is declared technically and economically feasible to be realized. Keywords: Economic Analysis, Acetaldehyde, Eastman Chemical, Ethyl Acetate, Fixed Bed Multitube Reactor.
Tidak tersedia versi lain