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Cleanable Solids Processing Equipment and Systems 259<br />

FIGURE 1 Typical spray balls. Source: Courtesy of Electrol Specialities Company.<br />

the full product path to ensure cleanliness. Apart washing cabinet may be set up<br />

and used for cleaning the fluid atomizers. Rotary atomizers generally require<br />

disassembly and manual cleaning or cleaning in aparts washer.<br />

Specific Spray Dryer Design Considerations<br />

Headplate/Air Inlet<br />

Spray dryers use an air inlet distribution system installed in the dryer headplate to<br />

control hot air distribution into the dryer body. This is sometimes referred to as an<br />

air swirler. The air swirlers come in avariety of sizes and configuration to allow<br />

Rotary<br />

atomizer<br />

Two-fluid nozzle<br />

co-current mode<br />

Two-fluid nozzle<br />

fountain mode<br />

FIGURE 2 Atomizers (including rotary and two-fluid). Source: Courtesy of GEA Niro Inc.

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