What is a rotary dryer?
The rotary dryer is a device that uses rotation, gravity and warm gases to dry. These dryers range from small household dryers to large industrial systems. Regardless of their size, most rotary dryers work in the same way. The drum turns and moves the material while the hot gases dry it quickly. The main resolution in these dryers is the type of gases used and the method used to generate heat. As a result of the huge kinetic energy they create, rotary dryers of all, except the smallest sizes, require solid support systems such as concrete columns or floor screws. The main component of the user is the drum where the working material is located. The inside of the drum contains many large fins that help lift and upset the work material as the dryer is spinning. This drum is connected to the internal functioning of the dryer, but they are hidden from the outside. Advera covers the opening of the drum to close the compartment.
When the rotary dryer turns, the fins are lifted from the bottom of the drum and lift it at the side. When the fins are close to the top of the drum, gravity causes the raised material to fall back to the bottom. As the working material decreases, it is sprayed with warm gas. This gas is very effective in drying the material because it is completely open on all sides.
In the rotary dryers, several different gases are used. In household dryers, most gas is simply warm air. Almost any gas can be used in commercial or industrial dryers, but exhaust gases and various inert gases are more common. In these dryers, the main problem is the possible contamination of the work material and the maximum heat of the gas used.
The only common difference in the rotary dryer is the method used to heat and distribute the air into the drum. Direct heated dryer uses combustion gases generatedwith artificially heated gas. This second gas is almost always common air, but it can be any inert gas. These systems are only used if the heater exhaust cannot contaminate the working material.
The second system is called indirect thermal rotary dryer. In this case, the heater warms the second gas that enters the drum, while any combustion gases remain separate. This form of dryer is most likely for the average person they encounter, because it is a species commonly used for dry clothes.