Simulation of a circulating fluidized bed combustor using ASPEN PLUS

The objective of this project is the development of a design simulation program for Circulating Fluidized Bed coal Combustors (CFBCs) using the ASPEN PLUS simulator. Since there is no CFBC model provided by ASPEN PLUS, we must develop our own using the tools offered by ASPEN PLUS. In order to accurately simulate CFBCs, two models must be developed simultaneously: a hydrodynamic model and a combustion model.;The hydrodynamic model allows the distribution of gas and solids in the CFBC to be determined. Simplifying assumptions were made regarding the hydrodynamic of a CFBC. Our model considers that the CFBC is divided into two regions: a lower region and an upper region. The boundary between these regions is determined by the secondary injection point.;The combustion model allows for the determination of the chemical changes and the heat released during combustion. The following basic steps of the coal combustion process are considered in the model: (1) Devolatilization and volatile combustion; (2) Char combustion; (3) NO...