Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
Simulation of air-steam gasification of glycerol using aspen HYSYS
Submission Author:
Jesús David Rhenals Julio , Córdoba , Brazil
Co-Authors:
Jesús David Rhenals Julio, Carlos Manuel Romero Luna, Diogo Nunes
Presenter: Jesús David Rhenals Julio
doi://10.26678/ABCM.COBEM2021.COB2021-2065
Abstract
In the current energy context, efforts are being made to eliminate the dependence on fossil fuels, so several researches have been developed to find substitutes for these fuels. Biodiesel is a fuel of renewable origin that has gained relevance because it seems to be the most suitable fuel to replace fossil diesel. Alternately to the production of biodiesel, 10% of glycerol is produced, this compound has become a worldwide problem since its applications in the conditions in which it is obtained are very restricted, which has led to the accumulation or incineration of this by-product. The increase in biodiesel production worldwide has led to an accelerated decrease in the price of glycerol, which directly affects the price of biodiesel; therefore, alternatives have been developed to give added value to this by-product, among them gasification. This work evaluates, by means of a simulation model developed in Aspen HYSYS, the energetic valorization of crude glycerol obtained from biodiesel production, by means of gasification by partial oxidation, using steam-air mixture as gasifying agent. The added air helps to reduce the process costs, since it decreases the steam requirements and the heat demand of the process. The properties of the substances involved in this process will be estimated using the Peng-Robinson thermodynamic model modified by Strijek and Verak (PRSV). With the developed model, a parametric analysis will be carried out in order to optimize the gasification process, defining parameters such as optimum temperature and pressure and the vapor/glycerol and air/glycerol ratios, which make the gas produced have the highest calorific value.
Keywords
Gasification, Glycerol, biodiesel, Steam, Kinetics
