Pneumatic conveying of high-temperature products

Pneumatic conveying of high-temperature products

In the context of industrial process that involve handling high-temperature products, pneumatic conveying is often the optimal solution, especially when significant distances need to be covered. A common and frequently encountered application concerns the conveying of ash from boilers or from the cleaning of electrofilters used for the purification of NOX-containing fumes.

In these specific applications, dense phase pneumatic conveying with a conveyor configured in total cleaning mode is a frequent choice. The flexibility of an automated conveying system, capable of handling variable flow rates proves particularly advantageous. For instance, during the filter cleaning cycle, the amount of dust to be transferred reaches its peak, while at other times, it may be significantly reduced. The ability to adapt to these variations and to travel long distances at limited speeds in order to reduce pipeline wear and maintain the cleanliness by avoiding from any residue that could generate fouling, make dense phase pneumatic conveying with a conveyor configured in total cleaning mode an ideal solution.

Air-Tec System offers advanced solutions for pneumatic conveying with a capacity of up to 200°C. Although this value is related to the heat resistance of the seals, it is important to note that the mechanical devices for collecting and conveying dust upstream of the pneumatic conveying generally allow for a rapid temperature reduction. Therefore, the pneumatic system find extensive applications even in contexts where design temperature exceed this limit.