Abstract
Pyrolysis process converts biomass into liquid, gaseous and solid fuels. Chemical kinetics play a key role in explaining the characteristics of pyrolysis reactions and developing mathematical models. Many studies have been undertaken to understand the kinetics of biomass pyrolysis; however, due to the heterogeneity of biomass and the complexity of the chemical and physical changes that occur during pyrolysis, it is difficult to develop a simple kinetic model that is applicable in every case. In this review, different methods to describe biomass primary and secondary pyrolysis with different types of kinetic mechanisms are discussed.
Highlights
The development of thermochemical processes for biomass conversion and proper equipment design requires knowledge and good understanding of the chemical and physical mechanisms that are interacting in the thermal degradation process
Careless experimental work and poor mathematical evaluation techniques have contributed to the wrong performance of the reaction kinetics in this field [1]
This paper presents the state of the art in modelling chemical and physical processes of biomass pyrolysis
Summary
The development of thermochemical processes for biomass conversion and proper equipment design requires knowledge and good understanding of the chemical and physical mechanisms that are interacting in the thermal degradation process. This paper presents the state of the art in modelling chemical and physical processes of biomass pyrolysis. The review includes different mechanisms of kinetic modelling of the biomass primary and secondary pyrolysis process. Numerous models exist for the primary and secondary pyrolysis, each with their advantages and disadvantages. They range in complexity from simplest models to more mathematically complex models incorporating various factors which influence the kinetics of pyrolysis
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