Method for mechanical stoking in firing plants and firing plant

Details Method for mechanical stoking in firing plants and firing plant Method for mechanical stoking in firing plants and firing plant

F - Mech Eng,Light,Heat,Weapons

23

B

F23B 40/02 (2006.01)

Patent

CA 2716179

A method is disclosed for mechanical stoking in firing installations, in which fuel (3, 7) is applied using a mechanical stoker (4) to a grate (2), which is disposed in the firing chamber (1), wherein the mechanical stoker is oriented opposite the delivery direction of the grate (2), and a corresponding installation. The method is characterized in that the fuel (3, 7) is introduced directly below the firing chamber ceiling (5), viewed in the delivery direction of the grate (2) before the end of the grate, so that a burnout zone (10), which does not have fresh fuel (3, 7) applied thereto, is created on the grate (2) between the mechanical stoker (4) and the end of the grate (2). The residual carbon content of the ash can thus be decreased and a decrease of the rotational speed of the mechanical stoker can also be achieved.

L'invention concerne un procédé de chargement par projection de chaufferies, consistant à charger du combustible (3, 7), au moyen d'un chargeur par projection (4), sur une grille (2) disposée dans la chambre de combustion (1), le sens de projection étant opposé au sens de transport de la grille (2). L'invention concerne également un tel dispositif. Le procédé est caractérisé en ce que le combustible (3, 7) est chargé directement sous la voûte de la chambre de combustion, en amont de l'extrémité de la grille dans le sens de transport de la grille (2), de manière à créer une zone d'extinction (10) sur la grille (2), entre le chargeur par projection (4) et l'extrémité de la grille (2), qui n'est pas alimentée en combustible frais (3, 7). Ceci permet de réduire la teneur en charbon résiduelle des cendres et de réduire la vitesse de rotation du chargeur par projection.

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