1992-02-01

Recent Developments on the N.U. Rotating Self Cleaning Particulate Trap - Retention of PAC's and HC Emissions 920568

New developments on the Northeastern University's Rotating Self-Cleaning particulate trap are reported herein. A new and improved system has been constructed with emphasis placed on minimizing leaks around rotating parts. Five different, wall flow, ceramic monolith filter elements were tested, a Corning, two NGK, a Panasonic and a Corning/Ceramem trap. The filters were rotated to enable simultaneous capture of the particulate emissions and regeneration by removing the particulates using compressed air. Improvements on the casing, the ducts, and the sealing around the monolith provided for an air-tight casing, and for almost complete isolation between the exhaust and the cleaning air streams. Moreover, experiments were conducted to minimize the flowrate of the required cleaning air.

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