Method and apparatus for starting up a continuous-flow steam...

Details Method and apparatus for starting up a continuous-flow steam... Method and apparatus for starting up a continuous-flow steam...

F - Mech Eng,Light,Heat,Weapons

22

B

F22B 35/14 (2006.01) F22B 35/10 (2006.01) F22D 5/24 (2006.01)

Patent

CA 2212517

In a method for starting up a continuous-flow steam generator (1) having a combustion chamber (6) which possesses a number of burners (5) for a fossil fuel (B) and the gas-tight containing wall (2) of which is formed from at least approximately vertically arranged evaporator tubes (4), through which the medium passes from the bottom upwards, in order to reduce start-up losses the evaporator throughput (VD) is set in proportion to the firing heat capacity (FW) in the combustion chamber (6). For this purpose, a control device (58) having a controller module (54) for setting the quantity of medium (S) supplied to the evaporator (4) per unit time, in dependence on the fuel quantity supplied to the or each burner (5) per unit time, is used.

L'invention concerne un procédé pour la mise en marche d'un générateur de vapeur en continu (1) comportant une chambre de combustion (6) qui comprend une pluralité de brûleurs (5) destinés à un combustible fossile (B) et dont la paroi extérieure (2) étanche aux gaz est formée de tubes d´évaporateurs (4) disposés au moins approximativement verticalement et à travers lesquels le milieu s'écoule de bas en haut. Dans le but de réduire les pertes au démarrage, le débit de l'évaporateur (VD) est réglé proportionnellement à la puissance calorifique de combustion (FW) dans la chambre de combustion (6). A cet effet, un système de régulation (58) équipé d'un module régulateur (54) est utilisé pour régler la quantité de milieu (S) amenée à l'évaporateur (4) par unité de temps en fonction de la quantité de combustible amenée à chacun des brûleurs (5) par unité de temps.

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