Method for operating a waste heat steam generator

F - Mech Eng,Light,Heat,Weapons – 22 – B

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Details

F22B 35/00 (2006.01) F01K 13/02 (2006.01) F01K 23/10 (2006.01)

Patent

CA 2743425

The invention relates to a method for operating a waste heat steam generator (1) comprising an evaporator (16), an economizer having a number of economizer heating surfaces (10, 14), and a bypass line (4) connected on the flow medium side in parallel with a number of economizer heating surfaces (10), wherein said method should make possible higher operational safety and reliability in the control of the waste heat steam generator. For this purpose, a parameter that is characteristic of the thermal energy fed to the waste heat steam generator (1) is used to control or regulate the flow rate of the bypass line (4).

L'invention concerne un procédé de fonctionnement d'un générateur de vapeur à récupération de chaleur (1) comportant un évaporateur (16), un économiseur présentant une pluralité de surfaces chauffantes (10,14) et une conduite de dérivation (4) montée en parallèle à un certain nombre de surfaces chauffantes (10) de l'économiseur, côté agent d'écoulement, ce procédé visant à augmenter la sécurité et la fiabilité de fonctionnement lors de la commande du générateur de vapeur à récupération de chaleur. A cet effet, une grandeur caractéristique de l'énergie thermique amenée au générateur de vapeur à récupération de chaleur (1) est utilisée pour la commande ou la régulation du débit dans la conduite de dérivation (4).

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