A System for Capturing CO{sub}2 from a Combustion Exhaust - Feasibility Research

摘要

A Particle Gas Absorber system designed to remove CO{sub}2 from a rapidly flowing exhaust gas is described. Absorbent particles are evenly dispersed at the top of a duct to fall through and absorb CO{sub}2 from a gas flowing through the duct. The CO{sub}2 diffuses first through the gas and then through the water on the particle to react and form a product stored on the particle. The particles are sized to absorb CO{sub}2 on the appropriate time scales, and are collected and washed outside the duct for recycling. The diffusion processes are modeled and the appropriate particle chemistry is developed and measured. Static absorption experiments are performed to measure gas absorption rates. Process economics is estimated, future work is described, and overall feasibility assessed.