TECHNO-ECONOMIC ANALYSIS OF 2-METHYLPROPANOL FROM PROPYLENE AND SYNTHESIS GAS: A CASE STUDY OF ASPEN HYSYS

This study presents a techno-economic analysis of 2-methylpropanol (isobutanol) production from propylene and synthesis gas using Aspen HYSYS. Isobutanol is a valuable chemical with applications in biofuels, solvents, and industrial manufacturing. Traditional production methods depend on fossil fuels, posing environmental and economic challenges. This research explores alternative pathways, comparing chemical synthesis with microbial fermentation using lignocellulosic biomass (yam peels, rice husks, and cassava peels). The methodology involves process modeling and simulation of isobutanol production through hydroformylation of propylene and subsequent hydrogenation. Aspen HYSYS and Aspen Economic Analyzer optimize process conditions such as temperature, pressure, and feed ratios while evaluating capital and operational costs. A comparative analysis is conducted between chemical synthesis and fermentation methods. Results indicate that the chemical synthesis route achieves a 95% purity level of isobutanol, with major cost factors in separation and reactor systems. The fermentation process offers a sustainable alternative but exhibits lower yields due to limitations in biomass conversion and downstream processing. Economic analysis reveals that chemical synthesis provides higher returns but requires significant energy input, whereas fermentation aligns better with environmental sustainability goals. The study concludes that isobutanol production from renewable sources is technically and economically viable. While chemical synthesis ensures high yields, fermentation supports sustainability. Challenges such as energy consumption, byproduct management, and capital investment need further optimization.