The IKN pendulum cooler

The pendulum cooler is designed in close accordance with the cross flow principle. The clinker bed in a pendulum cooler is characterized by a temperature profile and vertical segregation of particles. In a profiled clinker bed, the difference in temperature between gas and solid is maximized. Horizontal air jets simulate an infinite number of openings in the grate surface. By pressurizing the voids or interstices in the clinker bed the cooling air sweeps the fluidizable fines to the bed surface. Only when the voids are completely purged, the pressure drop of the bed is at a minimum. In a pendulum cooler, the movable portion of the grate is suspended on long and inclined strands of metal sheets. The fixed and movable frames are designed to limit deflection to one millimeter variation of gaps under full load. The grate surface consists of Coanda nozzles with replaceable blades, which generate horizontal air jets. This paper describes the design of the pendulum cooler and its main components