Abstract: Cooling-solidification of sprayed droplets is one of major methods for prilling of melt.
Traditionally, this is carried out in an empty tower, and the equipment requirement for
producing larger particles is very high, resulting in not only significant cost increasing
but also difficulties in transporting melt etc. Based on analysis and simulation, a new
prilling process is developed for the melt prilling, which combines a tower with a
fluidized bed so that the height of equipment is greatly decreased, and it exhibits
satisfactory performance in industrial application. Mathematical model for tower prilling,
its simulated results, the structure of the equipment for the innovated prill-ing process
and its application are addressed.

Key words: prilling, melt, spray tower, fluidized bed

摘要： Cooling-solidification of sprayed droplets is one of major methods for prilling of melt.
Traditionally, this is carried out in an empty tower, and the equipment requirement for
producing larger particles is very high, resulting in not only significant cost increasing
but also difficulties in transporting melt etc. Based on analysis and simulation, a new
prilling process is developed for the melt prilling, which combines a tower with a
fluidized bed so that the height of equipment is greatly decreased, and it exhibits
satisfactory performance in industrial application. Mathematical model for tower prilling,
its simulated results, the structure of the equipment for the innovated prill-ing process
and its application are addressed.

关键词: prilling;melt;spray tower;fluidized bed