Control system for controlling the feeding and burning of a...

F - Mech Eng,Light,Heat,Weapons – 23 – K

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F23K 3/02 (2006.01) C03B 5/235 (2006.01) C03B 5/24 (2006.01) F23N 1/02 (2006.01) F23N 5/00 (2006.01)

Patent

CA 2500743

The invention relates to a control system which is used to control the storing, feeding and burning of a pulverized fuel in a glass melting furnace, wherein a series of burners are arranged one in front of the other to carry out combustion and non-combustion cycles during a glass melting process. According to the invention, pulverized fuel-feeding systems are provided, which are filled with the pulverized material and emptied out in order to provide a constant flow of the pulverized fuel to each of the burners during the glass melting process. Furthermore, the control system includes means for monitoring and controlling the filling and discharge of the aforementioned pulverized fuel-feeding system, which are based on measuring and monitoring the amount of pulverized fuel that is stored and being fed by the pulverized fuel-feeding system. Control means are provided for monitoring at least one operating variable involved in the glass melting furnace, said control means detecting a series of different variable during the glass melting process. The invention also comprises means for controlling the alternation of the combustion and non-combustion cycles of each burner, which are based on the monitoring and feeding of the pulverized fuel to each burner and on the operating variables of the glass melting process.

L'invention concerne un système de commande du stockage, de l'alimentation et de la combustion d'un combustible pulvérisé dans un four de fusion de verre où une série de brûleurs sont disposés l'un en face de l'autre afin d'effectuer des cycles de combustion et de non combustion pendant un processus de fusion de verre. On prévoit, à cet effet, des systèmes d'alimentation de combustible pulvérisé, lesquels sont remplis et vidés avec le matériau pulvérisé afin de fournir un flux constant du combustible pulvérisé à chacun des brûleurs pendant le processus de fusion du verre. Le système de commande comprend des moyens de surveillance et de commande du remplissage et de la décharge du système d'alimentation de combustible pulvérisé d'après la mesure et la surveillance de la quantité de combustible pulvérisé qui est en cours de stockage et d'alimentation par le système d'alimentation de combustible pulvérisé. On prévoit en outre des moyens de commande permettant de surveiller au moins une variable d'opération impliquée dans le four de fusion de verre, les moyens de commande permettant de détecter une série de variables différentes pendant le processus de fusion de verre. On prévoit par ailleurs des moyens de commande de l'alternance des cycles de combustion et de non combustion de chaque brûleur, d'après la surveillance et l'alimentation du combustible pulvérisé à chaque brûleur et d'après les variables d'opération du processus de fusion de verre.

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