Powder Cooler - Christian Pfeiffer

Cool affair: temperaturereduction throughcounter flow heatexchangeprincipleWater supply at cooler topHeight of cooling cylinder [m]Temperature difference∆TCooling waterMaterial to becooled (cement)The Christian Pfeiffer powdercooler consists of a vertical cylindermade of steel and cooled by awater film. A rotor inside the cylindertransports the hot materialfrom the inlet at the bottom tothe outlet at the top of the cooler.A steady stream of cooling media(water) flows down the outsideto remove heat from the steel cylinderand thereby cooling the materialwhile being transported inside.Moving up the cooler on theadjustable spirals of the rotor, thematerial is constantly being turnedand pressed against the cooledouter wall. And depending on theinitial temperature of the feed materialand the cooling water, a reductionfrom 40 °C up to 70 °C canbe achieved. The complete driveunit is located in the cooler basewhere the components are easilyaccessible for maintenancework. In the lower area of the cylinder,the cooling agent flows intoa collection gutter. The water canthen be discharged completely, returnedto the water reservoir orpiped to a nearby water processingplant for re-cooling and re-use.Temperature [°C]