Avaliação termodinâmica e econômica da síntese de amônia, gás natural e metanol através da rota de gaseificação de biomassa no contexto do Brasil

Abstract

This research explores the potential for synthesizing synthetic fuels and producing ammonia in Brazil using sugarcane bagasse and solid urban waste, both biomasses considered important in the Brazilian energy scenario by the National Energy Program 2030 and 2050. The case studies first consider gasification with 2 different gasification agents, with air only and another with air and steam added simultaneously to obtain hydrogen, which will be used to synthesize the other products. The plants are analyzed using the 1st law thermodynamic indicator to determine the overall efficiency without considering a scenario of thermal use by regeneration. The levelized costs of H2, NH3, GNS and CH3OH are also analyzed in order to quantify the viability of these products through a renewable route compared to conventional fossil energy routes. It can be seen that gasification using the addition of air and steam favors hydrogen production in all the scenarios evaluated, reducing levelized costs and obtaining higher plant efficiencies. The increase in hydrogen productivity results in the production of ammonia, GNS and methanol with lower production costs and higher efficiencies.