Multiphase CHD is used to design a compact fluidized bed sorher for CO2 removal from flue gases using sodium or potassium carbonate pellets.The sorber sizes are much smaller than commercial amine absorbers and smaller than other proposed dry adsorbers.The size reduction is due to the elimination of dilute regions that cause bypassing.With proper solids feeding we eliminated the usual core-annular regime found in circulating fluidized beds.