Modelo termodinâmico para gaseificação a vapor de glicerol em leito fixo

Abstract

Glycerin coming from the production process of biodiesel has not commercial value and is, in most cases, a difficult disposal due to impurities such as methanol, salts and catalysts. Moreover, the combustion of glycerol in boilers and incinerators generates toxic acrolein emissions. The steam gasification is studied here as a processing method for generating synthesis gas from glycerol. To establish the ideal proportions of glycerol and water being fed into the reactor, in addition to studying the effects of bed temperature, a thermodynamic equilibrium model for the chemical reactions of gasification is presented. This model is validated against experimental data from a fixed bed reactor operating the steam gasification of glycerine at a temperature of 530 ° C. The composition of gasification products obtained showed a predominance of methane and hydrogen with a calorific value of about 17MJ / kg.