An effective multi-loop control system to improve control performance of CO2 capture

A multi-loop feedback control system is proposed to operate CO₂ capture with amine solvent efficiently over wide ranges of power plant operation. This work examines potential plant-wide control structures in operating CO₂ capture in a process flow sheet of a fully integrated dynamic model. This study illustrated that controlling the reboiler temperature and solvent circulation rate is an effective strategy in set point tracking and disturbance rejection in response to possible dynamic scenarios. Power plant load reduction and reboiler steam load reduction are the scenarios simulated for control configuration validation.