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Accumulation of powder in hot zone of spray dryer

Accumulation of powder in hot zone of spray dryer

Accumulation of powder in hot zone of spray dryer

We are using Rotary atomizer type spray dryer for drying of Herbal Powder Extracts.
a couple of days ago, during production, powder started burning at same process parameters.
When opened it was found that very thick layer of powder was accumulated at hot zone ( area above atomizer disk).(see the picture attached)
The powder is only at one side of the body.
No clue. can any one help

RE: Accumulation of powder in hot zone of spray dryer

Is this a one time thing? How long has this process ran? Does it happen always after some time?

Good luck,

To a ChE, the glass is always full - 1/2 air and 1/2 water.

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