Browsing by Author "Arrepol Luengo, Paula Ignacia"
Now showing 1 - 1 of 1
Results Per Page
Sort Options
Item Análisis exergoeconocónico y exergoambiental de una planta de vainillina a partir de Lignina.(Universidad de Concepción, 2024) Arrepol Luengo, Paula Ignacia; Marzialetti Bernardi, Teresita Graciela; Morales, BraulioThis study achieved an exergoeconomic and exergoenvironmental analysis of the vanillin production process from lignocellulosic biomass. The study aimed to identify and quantify stages with high thermodynamic inefficiencies expressed in monetary costs and environmental impacts. Initially, the process was simulated using Aspen Plus v14 software, considering a production capacity of 0,23 ton/day of 98% vanillin purity. From the information provided by the software (properties of material and energy streams), the process yield was determined. Subsequently, the exergetic contents of each material and energy stream involved in the process were calculated, crucial aspects for evaluating efficiency and exergetic losses. This exergetic analysis constitutes the fundamental step for conducting the exergoeconomic and exergoenvironmental analysis of the plant. In the exergoeconomic analysis, exergetic principles were combined with conventional economic analysis, assessing the acquisition, operation, and maintenance costs of each component (equipment) of the process. For the exergoenvironmental analysis, exergetic analysis was integrated with the Life Cycle Assessment (LCA) methodology. The Eco-indicator 99 impact assessment model was utilized to estimate the environmental impact caused by the extraction of raw materials, production, use, and disposal. The impact is expressed in points. (millipoints, mPt). This methodology allows us to quantitatively express the environmental impact of the purchase, maintenance, operation, and disposal stages of each process equipment. These tools allow evaluating the monetary and environmental costs associated with the thermodynamic inefficiencies of each process component. The plant's exergetic efficiency is 34%, mainly associated with exergy destroyed by the leakage streams and equipment irreversibilities. The estimated cost of vanillin was 156 USD/kg with a molar purity of 98,5% and an environmental impact of 2.178 mPt/kg. Finally, this study concludes that it is recommended to conduct an exergoenvironmental or life cycle analysis of the forest route for obtaining high-purity vanillin to determine a more suitable environmental impact score, as the environmental impact of vanillin was found to be different from the average organic compounds environmental impact. Additionally, it is concluded that there is equipment in the process that can be omitted, the D-101 condenser, due to its high economic and environmental cost of exergy destruction and its unnecessary need within the process.