Design, Fabrication and Testing of a Cyclone Separator Unit

Author : Pedro, Bernard Santos
Major Adviser : Demafelis, Rex B. 
Committee Members : Movillon, Jovita A.; Abrigo Jr., Casiano S.; Arquiza, Apollo C.
Year : 1993
Month : April
Type : Thesis
Degree: BS
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An involute cyclone separator unit was designed, fabricated and tested. The minimum particle size that can be separated by designed cyclone was 3.6 μm based from the density of the dusts particles and density of air. The fabrication of the equipment was done at Franciscan Engineering Works in Sucat, Parañaque. The equipment was tested at the Chemical Engineering Laboratory.

Feed samples of 100 grams, consisting of 50 grams of sand and 50 grams of cement thoroughly mixed together, were used tot test the collection efficiency together, were used to test the collection efficiency of the cyclone. It can be noted that none of the trials showed a collection efficiency of 100 % for cement particles. The lowest collection efficiency obtained was 77.8 % while the highest was 90 %. The average collection efficiency for all trials was 82.4 %. Errors can be attributed to the fact that it was very difficult to attain a constant process for the introduction of dust particles because it was done manually. Some cement particles were lost in the feed tank because it was blown away by the gas backflow due to high pressure. There were also some clogging in the dusts pipeline.

Probably the greatest single cause for poor cyclone performance was the leakage of air into the dust outlet because of some abrupt increase in the solids feedrate during the trials. A slight air leak at the dust outlet resulted in a tremendous drop in collection efficiency, particularly with fine dusts.

For an increase collection efficiency of the designed cyclone separator, another unit may be added Pipe ducts and dusts outlet should also be tightly sealed so that there is no leakage of air and dusts.

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