CFD-DEM simulation of solid circulation rate in the cold flow model of chemical looping systems

- CFD-DEM with parcel concept was used to simulate the gas-solid flow in CLC systems.
- SCR at different locations fluctuates with time with different amplitude.
- Turbulent gas-solid flow in air reactor is the main reason for the SCR fluctuation.
- Solid mass in the riser is dependent on the changes in operating conditions.
- SCR was correlated as a function of solid hold-up and gas velocity in the riser.