Tips on how to use a dryer

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  • Added: September 19, 2022

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What’s a dryer?

A dryer is a mechanical system or machine that removes the water from wet grains by forcing either ambient air or heated air by means of the grain bulk.

Why is proper usage of a dryer essential?

Any delay in drying of wet paddy leads to fast deterioration of quality. A dryer that does not perform well or will not be operated properly can cause several problems:

Prolonged drying time attributable to inefficient air delivery or low temperature

Uneven drying of grains resulting from uneven airflow or very high temperature (batch dryers)

High fuel consumption as a consequence of ineffective air distribution or very high airflow rate

Low germination rate attributable to very high drying air temperatures

High number of broken grains because of mixing of dry with wet grains or resulting from moisture gradient

Fire hazard and danger of carbon monoxide (CO) poisoning of operators from using unsafe burners

What’s the proper way of drying?

For optimum drying, apply proper pre-drying management and operate the dryer according to the manual.

Before drying

Prevent any delay in drying after harvest. Should you can’t dry the paddy to the desired moisture content material, at the least pre-dry it to 18%, which is safe for temporary storage for as much as two weeks.

Clean the grains before drying to keep away from uneven drying and wet spots.

Do not combine grains with totally different moisture contents to avoid cracking.

Read the operator’s manual and familiarize yourself with the dryer operation.

Using the dryer

Load the dryer with wet paddy, considering the minimum load. Don’t overload.

With very wet paddy or when paddy lots with totally different moisture contents are combined, aerate or circulate the grains for 15−30 min before turning the heater on to reduce broken grains.

In a batch dryer with more than 30 cm grain depth, combine the grains a minimum of once for more even drying.

Monitor grain temperature and moisture content to forestall extra temperature and over drying.

Dry paddy after harvest to 18% moisture content for storage up to weeks.

Dry paddy for milling to 14% moisture content. Drying beneath 14% reduces weight and milling yield.

For eight−12-month storage, dry to thirteen% or less; for long-time period storage exceeding 1 year, dry to 9%.

Safety precautions

Always operate the dryer following the steps given within the manual.

Check burners or furnaces commonly to forestall fire hazards and excess CO production. Always have a fire extinguisher at hand.

Make certain that fuel lower-off valves that disconnect the fuel supply in case of energy cuts are functioning.

Guarantee proper ventilation within the working space to prevent CO poisoning.

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