(693g) Modelling a Process to Study Production Biofuels

In this work was studied the process Fisher-Tropsch, which is used to convert the synthesis gas (H2 and CO) to obtain hydrocarbons from linear chains. To carry out this study, this process was divided into three stages, the first one corresponds to the production of synthesis gas obtained from a natural gas, water vapor and oxygen feed, using a Gibbs reactor under the operating conditions of 1066 ° C and 20 atm by reactions of methane reforming, partial oxidation and Dussan reaction using a molar ratio of 2.14 H2/CO. At second stage, production of synthetic fuels was carried out from synthesis gas considering that the reaction kinetics for the Fischer-Tropsch synthesis is governed by the carbene model, as well as by law of power of Langmuir-Hinshelwood. To simulate this stage, a furnace type multitubular packed bed reactor at a temperature of 232 ° C and 21 atm pressure were used, taking into account the selectivity of the alkanes, their frequency factors and the activation energy to obtain hydrocarbons of linear chains from methane to higher alkanes (triacontanes). Finally at third stage, synthetic fuels obtained were separated according to their octane and density through a rigorous distillation column given as results final products as: incondensable gases (C1-C4), gasoline (C5-C9), turbosine and kerosene (C10-C5), diesel (C15-C23) and heavy oils.