Cleaning of hot calciner exhaust gas by low-density ceramic filters

Efficient dust removal at high temperatures gains increasing interest and ceramic filters are suitable to achieve high collection efficiencies for (sub-)micron particles. The paper presents experimental results for their application in lime-kiln operations. Experimental results were transformed into design equations for (i) the baseline pressure drop and the effect of the cleaning cycles; (ii) the total pressure drop and the effect of the dust load; (iii) the prediction of the time between two cleaning cycles in function of the operating parameters.