System for improving airflow characteristics within a coal pulverizer
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United States of America Patent
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Mar 22, 2016
Grant Date -
Feb 5, 2015
app pub date -
Aug 1, 2013
filing date -
Aug 1, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A coal pulverizer including a mill housing, a grinding surface disposed in said mill housing, a grinding wheel engaging said grinding surface for pulverizing coal chunks; an annular throat disposed around said grinding surface channeling a primary airflow from a lower housing portion below said grinding surface upward through an upper housing portion above said grinding surface; an annular secondary airflow chamber extending around an exterior of said upper housing portion channeling a secondary airflow circumferentially into said upper housing portion above said grinding surface; and, an annular secondary airflow deflector extending along an interior of said upper housing portion above said grinding surface directing said secondary airflow from said secondary airflow chamber downward across said grinding surface in a generally uniform uninterrupted circumferential airflow pattern.
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