System Hydrodynamics of a 1 MW[sub.th] Dual Circulating Fluidized Bed Chemical Looping Gasifier

What are the main findings? * A holistic dataset covering the hydrodynamic behavior of a 1 MW[sub.th] coupled dual-fluidized bed reactor system, encompassing more than 100 h of hot chemical looping gasification operation, is presented. * Using data collected during more than 50 h of operation of a downscaled cold flow model (CFM), the hydrodynamic behavior of the hot 1 MW[sub.th] setup is predicted and further evaluated. * A novel and robust method to calculate solids entrainment from a circulating fluidized bed (CFB) system, relying solely on pressure and temperature measurements, developed using the CFM data and validated using live data from the 1 MW[sub.th] chemical looping gasifier, is presented. What is the implication of the main finding? * Data from the cold flow model and the 1 MW[sub.th] pilot plant show that free variations of all underlying hydrodynamic boundary conditions are viable in a given range, each resulting in a characteristic response of the dual-fluidized bed reactor system. These findings are formalized in a set of operating ground rules, applicabale to similar dual-fluidized bed systems of any scale. * The novel calculation approach for the solid entrainment from the CFB(s) can be applied to any fluidized bed setup, allowing for accurate determination of this crucial parameter in any process configuration. A holistic dataset covering the hydrodynamic behavior of a 1 MW[sub.th] coupled dual-fluidized bed reactor system, encompassing more than 100 h of hot chemical looping gasification operation, is presented. Using data collected during more than 50 h of operation of a downscaled cold flow model (CFM), the hydrodynamic behavior of the hot 1 MW[sub.th] setup is predicted and further evaluated. A novel and robust method to calculate solids entrainment from a circulating fluidized bed (CFB) system, relying solely on pressure and temperature measurements, developed using the CFM data and validated using live data from the 1 MW[sub.th] chemical looping gasifier, is presented. Data from the cold flow model and the 1 MW[sub.th] pilot plant show that free variations of all underlying hydrodynamic boundary conditions are viable in a given range, each resulting in a characteristic response of the dual-fluidized bed reactor system. These findings are formalized in a set of operating ground rules, applicabale to similar dual-fluidized bed systems of any scale. The novel calculation approach for the solid entrainment from the CFB(s) can be appli