ventury for coal firing (primary coal)
A 300 tpd kiln having a nozzel of 140mm ,air 4500m3/hrs having a ventury od 250-130-200mm.when coal is fired always we see positive pressure above ventury,which gives variation in coal flow. but with out coal it gives nagetive pressure above ventury. can anybody hept me in this matter (may be a design fault )
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