Protective device for heat exchangers placed in fine ash particles-laden smoke duct

摘要

The present invention relates to a protection device exchangers placed in a conduit (1) of fumes laden with fine particles of ash, these exchangers being constituted by networks (10) parallel to each other comprising a main area equipped with sections (11) of straight tubes perpendicular to the flow of smoke and two end zones with bends (12) and sections (13) of tubes parallel to the free flow, characterized in that it consists of panels (20) mutually parallel and parallel to the networks (10) tubes, each panel (20) being placed between two networks (10) and each end region.; Application to ducts pulverized coal boiler flue gas.