Method and arrangement for treatment of black liquor

Details Method and arrangement for treatment of black liquor Method and arrangement for treatment of black liquor

D - Textiles, Paper

21

C

D21C 11/00 (2006.01) D21C 11/12 (2006.01) F23G 5/02 (2006.01) F23G 7/04 (2006.01)

Patent

CA 2209583

The present invention relates to a method of improving the operation of a boilerplant in a chemical pulp mill. At least part of the black liquor flow of the chemical pulp mill is divided into several batches being substantially in a solid form, which are mechanically turned into substantially equal-sized pieces for feeding into the recovery boiler and for combustion taking place therein. Waste liquor batches may be stored prior to the combustion. The invention also relates to a system for carrying out the method.

La présente invention a trait à une méthode permettant d'améliorer le fonctionnement des chaudières dans une usine de pâte chimique. Au moins une partie du débit de liqueur noire de l'usine de pâte chimique est divisée en plusieurs lots essentiellement sous forme solide, qui sont transformés mécaniquement en portions sensiblement égales pour alimenter la chaudière de récupération et pour y être brûlés. Les lots de liquide résiduel peuvent être entreposés avant la combustion. L'invention a trait également à un système permettant d'utiliser la méthode.

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