Industrial cooler

air-cooledcorrosion-resistantwater-cooled

GRELBEX rotary coolers are of the indirect type, i.e. the material is cooled indirectly by contact with tubes. They are designed to guarantee reliable operation, high efficiency, maximum industrial availability and easy maintenance. These operating criteria make our rotary coolers a wise choice for cooling powdered solids. The cooler consists of a rotating cylinder with internal fins, enabling the product to be stirred and slowly advanced inside the drum. The drum contains a network of tubes through which a cooling fluid (usually simply air) circulates. The product in contact with these "cold" tubes cools in a counter-current flow. This operating principle is especially suited to fine products (from a few microns to a few millimeters), with inlet temperatures ranging from 150°C to over 1200°C. Our coolers are adapted to the required inlet and outlet temperatures and product flow rates. Our teams size and design each unit so that it is perfectly adapted to the project and industrial operation for which it is intended. It's also possible to optimize the use of this type of cooler by recovering heated fresh air, which can then be used as drying air, preheating air or secondary combustion air. This optimizes the overall operation of the plant.