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How to clean the spray dryer?

Technical Knowledge 2019-02-17 20:19:42
In order to ensure the cleaning of the drying tower body and its piping and all parts in contact with the finished product, it is necessary to obtain a first-class product and regular cleaning equipment. When the product variety is changed, or if the spray drying equipment has been discontinued for more than 24 hours without being cleaned, a thorough and thorough cleaning should be carried out.

The cleaning method can be selected according to the actual choice of dry cleaning, wet washing or chemical washing.

1. Dry cleaning: Clean with a brush and a vacuum cleaner (for small dryers).

2. wet wash: wash with 60 ~ 80 ° C hot water.

3. Chemical washing: Wash with lye, acid and various detergents. Among them, pickling: HNO3 is formulated into a 1~2% concentration solution, the heating temperature is not more than 65 °C for washing, and then washed with water; alkali washing: NaOH is formulated into a 0.5~1% concentration solution, the heating temperature does not exceed 65 Wash at °C and then rinse with water.

After wet and chemical washing, the equipment and components should be installed and sterilized at high temperature for 15~30min. When washing, be careful not to wash with chlorine and its compounds.

The cleaning of the air filter should be based on the surrounding environmental conditions, that is, the amount of dust in the air. It should be cleaned once every 3~6 weeks, and the dust content is low for 6~8 weeks.

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