Design, Fabrication, and Preliminary Testing of a Rotary Flow Dust Collector

Author : de Torres, Roger Oborza
Major Adviser : Tapang, Edwin S.
Committee Members : Manoto, Russel D.; Sebastian, Eranio L.
Year : 1995
Month : April
Type : Thesis
Degree: BS
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A rotary flow dust collector unit was designed, fabricated, and tested. The separator unit has a height of 64.29 in and diameter of 9.97 in. Based on the theoretical calculation of the cut size, the minimum particle diameter that the designed equipment can separate was 0.08 µm. The fabrication of the equipment was done at Recto Motor Works and Engineering in Candelaria, Quezon. It was tested at the Chemical Engineering Laboratory.

For testing of the collector, mixtures of 200 grams, consisting of 100 grams saw dust and 100 Portland cement, were used as feed samples in three runs. The feed rates used were 12.60, 10.93, and 9.52 gm/min, respectively. The saw dust particle diameter ranges from 149 µm to 297 µm while the cement particle diameter ranges from 4 µm to 53 µm. It was found out that the desired collection efficiency was not met in the three runs. The highest collection efficiency was 96.2% and the lowest was 92.9%. The average efficiency was 94.2%. Failures in obtaining the desired efficiency may be attributed to some solid particles trapped in feed pipeline and in the rough portions of the separator wall. Furthermore, the feed samples were blown away by the gas back flow.

In order to increase the efficiency of the separator, the pipeline fittings and the walls must be smoothened to avoid clogging. A filter bag can be installed at the gas outlet pipe to check whether there are solid particles escaping with the outgoing gas.

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