Method and device for removal of soda melt from a soda...

D - Textiles – Paper – 21 – C

Patent

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D21C 11/12 (2006.01)

Patent

CA 2309832

Method and device for removal of soda melt from a soda recovery boiler in conjunction with shutdown of the soda recovery boiler, in which method the supply of lye into the boiler is interrupted and, if necessary, the pile of congealed soda accumulated in the boiler is burned using the flame of a gas or oil burner until the soda melt surface in the soda recovery boiler has fallen to the level of the lower edge of the discharge opening. According to the invention, the heating of the soda melt with the gas or oil burner flame is continued so as to keep it in the molten state and the soda melt is pumped out from the soda recovery boiler.

La présente invention concerne un procédé et un dispositif permettant d'extraire un bain de soude d'une chaudière de récupération de soude en même temps que l'on arrête la chaudière de récupération de soude. Selon ce procédé, on interrompt l'alimentation de soude dans la chaudière et, si nécessaire, on brûle la pile de soude figée accumulée dans la chaudière avec la flamme d'un brûleur à gaz ou à mazout jusqu'à ce que la surface du bain de soude dans la chaudière de récupération de soude soit tombée au niveau du bord inférieur de l'ouverture de décharge. Dans la présente invention, on continue à chauffer le bain de soude avec la flamme de brûleur à gaz ou à mazout de façon à le maintenir à l'état fondu et on pompe ensuite le bain de soude hors de la chaudière de récupération de soude.

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