DEVICE FOR PRELIMINARY HEATING OF AIR FOR COMBUSTION AND POWER INSTALLATION

摘要

1. A device (1) for preheating combustion air in a boiler, comprising: first first heat exchange structural elements installed in a flue gas channel (2) and intended for heating primary air, wherein the first heat exchange structural elements comprise a set of heat exchange pipes, forming a primary air circulation circuit (P), intended for primary air flow; - second heat-exchange structural elements installed in the channel (2) for flue gases and intended for heating and secondary air, wherein the second heat-exchange structural elements comprise a set of heat-exchange pipes forming a secondary air circulation circuit (S) for the secondary air flow; an inlet of the first heat-exchange structural element designed to supply primary air to be heated into the circulation circuit ( P) primary air; and - the inlet of the second heat-exchange structural element, designed to supply secondary air to be heated to the secondary air circulation circuit (S); characterized in that the inlet of the first heat-exchange structural element and the inlet of the second heat-exchange structural element are essentially at the same level while this level is essentially perpendicular to the center line of the flue gas channel. 2. A device for preheating according to claim 1, characterized in that the device further comprises: - a first zone (5) of air supply in the wall of the channel (2) for flue gases, designed to supply air to be heated in the first heat exchange�