COMBUSTION DEVICE IN A COMBUSTION ENCLOSURE WITH 'COLD' WALLS, BOILER AND OVEN COMPRISING SUCH A DEVICE

摘要

The device (10) for burning reagents in a so-called cool-wall (610) combustion chamber (605), which means to say one having a wall temperature supporting a thermal charge of less than 125 comprises: - at least one inlet pipe (105) for admitting a first reagent to the combustion chamber, - at least one primary pipe (110) for letting the second reagent into the combustion chamber separate from the inlet pipe for the first reagent, and - at least one secondary pipe (115, 215) for admitting a mixture of reagents into the combustion chamber having a means of injection (120, 220, 320, 420) of a stream of mixture of reagent directed toward the stream of the first reagent that has entered the chamber, the mixture coming from the secondary pipe leading to combustion to heat up: - the stream of first reagent leaving at least one first reagent inlet pipe, - the second reagent coming from the primary pipe, and - the products of combustion recirculated into the chamber to dilute the incoming reagents, to a temperature higher than a self-ignition temperature of at least one dilute reagent.