Wyssmont

DRYING QUESTIONNAIRE

Complete all areas that have a ** next to the evaluation of your product.
	DATE:

	**COMPANY	DEPARTMENT

	ADDRESS	PLANT LOCATION

	CITY	STATE OR PROVINCE

	ZIP	COUNTRY

	**PHONE	FAX


	INQUIRY INITIATED BY	TITLE

	**E-MAIL



**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 A SOLVENT, SHOULD IT BE RECOVERED? Yes No
	IF YES, ANSWER COOLING MEDIUM AND TEMPERATURE UNDER QUESTION 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.	IS DRIED PRODUCT TO BE COOLED? Yes No
	IF YES, TO WHAT TEMPERATURE? °F (OR) °C
	IS IT HYGROSCOPIC? Yes No
	COOLING MEDIUMS AVAILABLE
	TEMPERATURE °F (OR) °C
**7.	CHARACTER OF WET FEED
	TEMPERATURE °F (OR) °C
	State whether pasty, lumpy, granular, etc; whether excess moisture was removed by centrifuging, filtering, pressure or decanting.
**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 OF WET FEED °F (OR) °C
	DRIED PRODUCT °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 PRODUCT
**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 Depth
	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)


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