Numerical Modelling of Fluidized Bed Gasification: An Overview

Abstract

An overview of the computational fluid dynamics (CFD) modelling techniques used to study multiphase reacting flow in fluidized bed reactors is presented in this chapter. Research in fluidized bed gasifiers has gained momentum in recent years due to their various industrial applications. Experimental investigation of such intricate process requires sophisticated and expensive measuring techniques. Moreover, it is very difficult to capture essential process details of these systems by available experimental methods. On the other hand, numerical simulation offers a viable approach to experimental investigations. The numerical simulations not only offer a better insight into the complex gas–solid flow dynamics, but it also carries paramount importance in the design and optimization of fluidized bed systems. The present chapter primarily focuses on the CFD modelling fundamentals and their application pertaining to fluidized bed reactors. Detailed description of gas–solid flow modelling and chemical reaction kinetics is given separately.