The use of activated carbon (AC) as an adsorbent for Nox removal has been recognized as oneof the advanced technologies for the cleanup of flue gases. Fluidized-bed adsorption seems to be a promisingtechnology for increasing the efficiency of Nox adsorption on AC. In this paper a fluidized bed adsorber isconsidered for this purpose. The behavior of this type of adsorber is studied and a mathematical model ispresented based on two-phase theory of fluidization. The proposed mathematical model is solved by a computerprogram for different operating conditions. The output of the program is the efficiency of the bed for Noxrecovery. In order to check the accuracy of the proposed model a pilot-scaled fluidized bed adsorber is erected.The main part of the experimental apparatus is a cylindrical bed of 9-cm diameter and 124 cm total length. Thebed contains particles of AC as adsorbent. An upward stream of air, containing Nox as impurity, is used asfluidizing agent. The efficiency of the bed is measured for different operating conditions. The effects of someparameters such as: AC particle size, inlet gas velocity, inlet Nox concentration and weight of AC in the bedare studied on the adsorber efficiency. The experimental data are compared with the data predicted by the modeland a good agreement is observed between them. Once the validity of the proposed model is checked, it couldbe used for obtaining the optimum operating conditions for this type of beds.
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