Dryeration for rice

by Stormy Wylie
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Dear editor,
We would like to have broader information on Dryeration since you don't mention time in terms of drying batches. Our experience using the tower or column dryer is to give the grain, mainly rice, one pass then convey it to hopper tank No. 1 and so on.

Our country is Ecuador and our main crop is rice. We would like any information on rice drying, which is very delicate to treat and to dry.

Alonso Araque
Gaayaquil, Ecuador


Editor's Reply:
I have past experience with rice drying. Rice is very brittle and sensitive to heating and cooling shock. Between normal passes, rice leaves the dryer without cooling and tempers in holding bins for several days before it is returned through the dryer for additional drying cycles.

When drying rice using multiple passes, Dryeration will temper and cool the rice, removing some additional moisture during the temper and cool period. Dryeration can be used in rice drying and can reduce the number of drying passes or drying cycles needed to reach lower moisture levels. However, because of the lower temperature of rice as it leaves the drier, the performance is not as high as with maize drying where dryer capacities are regularly increased by 60% to 75% or more.

You should be able to eliminate at least one pass through the dryer using Dryeration, if you are using four passes or more. On four-pass drying, you should be able to complete drying in three passes for a 25% increase in performance with Dryeration.

Dryeration will improve rice drying by slowly and carefully cooling the rice and removing some residual moisture during the cooling process. Rice quality should be equal to or better than with conventional rice drying.