Coated absorbent particles for a carbon dioxide scrubber system

摘要

The invention provides CO 2 -absorbent particles for a CO 2 scrubber system comprising a plurality of pieces of substrate material, the pieces being coated with an at least partly enveloping outer layer formed of a CO 2 absorber, wherein the particles have a substantially inert core of substrate material and an average particle sizes in the range of about 6-14 mesh, and wherein the volume of the coating layer is about 20-40% of the substrate volume. The substrate is preferably magnesium oxide granules and the absorber lithium hydroxide. The scrubber system is used to remove carbon dioxide from air or fuel streams supplying metal-air or fuel cell batteries or respiratory breathing systems.