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1. **Product To Be Dried

2. **Nature of moisture to be removed


State whether water or solvent. If solvent, identify by name or formula.

3. **If it's a solvent

Should it be recovered? Yes No

If yes, answer cooling medium and temperature under questions 6.

4. **Production Rate (Dried Product)

lbs/hr (OR)
kg/hr
hrs per day

5. **Moisture

in wet feed % by weight (wet basis)

in dried product % by weight (wet basis)

6. **Dried Product Is dried product to be cooled? Yes No

If yes, what temperature? F° (OR) C°

Is it hygroscopic? Yes No

Cooling mediums available

Temperature F° (OR) C°

7. Character of wet feed


State whether pasty, lumpy, granular, etc; whether excess moisture was removed by centrifuging, filtering, pressure or decanting.

Temperature F° (OR) C°

8. Behavior of Wet Feed


State whether sticky, smears, breaks up readily, etc.

9. Character of Dry Product


State whether lumps, crystals, granular, powder, etc.

10. **Temperature Limit

Wet Feed F° (OR) C°

Dry Feed F° (OR) C°
Temperature limit of material (not of air) above which quality of product is impaired.

Reason for temperature limit
State if decomposition, discoloration, sublimation, etc. limits temperature

11. Does product undergo changes in course of drying?


State whether product becomes sticky, softens, etc.

12. Is any water of hydration (crystallization) to be driven off?

13. Chemical Formulas

Before Drying

After Drying

14. Method of determining moisture content of material

15. Other quality standards or tests for dried products

16. Specific heat of solids

Btu/lb °F (OR) cal/g °C

17. Apparent density of material

Wet lbs/cu ft. (OR) g/cu. cm

Dry lbs/cu ft. (OR) g/cu. cm

18. **Source of heat for drying

Steam psig (OR) barg

Gas Oil
Electric Volts

Other (describe)

19. Electric power

Volts, Phase, Hertz

20. **Materials of construction

For trays and parts coming in contact with product.

Rest of interior in contact with gas stream.

21. Can sample of wet material be furnished for tests?

22. Cite specific handling precautions in lab (provide MSDS)

23. If product is already being dried, state type of dryer used.

Air Temperature Drying Time Layer Depths

Air velocity (over)(thru) material fpm (OR) cm/s

Principal Problems

24. Particle Size Distribution

25. Additional Remarks

Mention any existing or expected difficulties in drying this product