Method for controlling a vibrating prilling bucket in a urea prilling process

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United States of America Patent

PATENT NO 11511248
APP PUB NO 20220331765A1
SERIAL NO

17763400

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Abstract

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A method for controlling a prilling bucket in the prilling of a a urea melt (UM) including: feeding the urea melt to a prilling bucket (1) which vibrates under the action of a magnetostrictive device (2), wherein the vibration of the bucket is controlled, as a function of the amount of urea melt to be prilled, by the following steps: acquisition of a time-varying input signal (3) which represents the flow rate of urea melt fed to the prilling bucket; generation of a first signal (5) and of a second signal (6), independently from each other, as a function of said input signal (3); generation of a third signal (10) having a frequency which is modulated by said first signal and an magnitude which is modulated by said second signal, and use of said third signal to drive said magnetostrictive device (2).

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Patent Owner(s)

Patent OwnerAddress
CASALE SAVIA GIULIO POCOBELLI 6 LUGANO CH-6900

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Marrone, Leonardo Mercallo, IT 16 1

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