Simulation of Different Wood Pyrolysis Considering Evaluation of Air Pollution Impact

Pyrolysis process is one the thermo-chemical methods in which the biomass is decomposed in the absence of oxygen to produce bio-oil, bio-char and syn-gas. In recent years, due to the reduction of resources and pollution caused by fossil fuels, the use of new and renewable energies has become a special place among countries. Hence, research has been carried out to implement this process at various scales. But it is certainly not feasible to study different operational conditions with different feeds for this process on an industrial scale; therefore, in this study pyrolysis simulation was performed using Aspen Plus software. In simulation, at first, the amount of moisture in the feed used is reduced to a certain amount. In the next step, the biomass decomposes into its constructive elements. In the final step, based on the Gibbs free energy minimization approach, pyrolysis reactions are modeled. The main objective of this study is to investigate the pyrolysis process in terms of the production of and environmental pollutants, along with the rate of production for all feed samples used. In the simulation, three wooden samples have been used.