Temperature-based estimation of remaining absorptive capacity of a gas absorber

摘要

A method and system are provided for estimating remaining absorptive capacity of a gas absorber. Inside the gas absorber, a reaction gas is produced by an exothermic or endothermic reaction. A plurality of temperature sensors include a first temperature sensor positioned at the gas absorber's inlet and subsequent temperature sensors spaced apart along the gas's flow path therethrough. Temperature differences between each subsequent temperature sensor and the first temperature sensor are determined. Each temperature difference is normalized using the largest one of the temperature differences so that corresponding normalized temperature differences are generated. The normalized temperatures differences are indicative of the remaining absorptive capacity of the gas absorber in accordance with a selected, experimentally-determined calibration function.