Installation for Humidifying Finely Dispersed Material: Justification of the Nozzle Rotation Angle and Liquid Spraying Time

A drum-type installation for humidifying finely dispersed material is proposed. When implementing the installation concept at the stage of design and technological calculations, an important role is played by determining the rotation angle of the nozzle that sprays the humidifying liquid and the spraying time required to apply the liquid to the surface of the finely dispersed material layer. In order to implement the installation, mathematical calculations were performed, according to which, for a prototype humidifying installation with a drum with a diameter of 480 mm and a depth of 250 mm, a drum angular velocity of 1.256 rad/s, and a height of the humidified material layer corresponding to an angle of 0.42 rad, the calculated nozzle rotation angle was 0.39 rad. The liquid spraying time with the probability of droplet–particle interaction P = 0.95 was 126.9 s. To automate and simplify calculations when designing technological humidification lines, a program in Visual C# has been developed which allows calculating the nozzle rotation angle and liquid spraying time based on the characteristics of finely dispersed material and the geometric parameters of the drum. The calculation results obtained from the models are to be further verified by experiments.