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Factors Affecting Chloride And Potassium Removal Efficiency Of A Recovery Boiler Precipitator Ash Treatment System


February 1, 2010
By Pulp & Paper Canada

Facteurs modifiant l’efficacit de l’limination du chlorure et du potassium d’un systme de traitement des cendres du prcipitateur d’une chaudire de rcupration

Facteurs modifiant l’efficacit de l’limination du chlorure et du potassium d’un systme de traitement des cendres du prcipitateur d’une chaudire de rcupration

Abstract: A laboratory study was performed to examine the main factors affecting the removal efficiency of chloride (Cl) and potassium (K) of ash treatment systems operated at a tempera- ture between 60 and 100C. The results show that the removal efficiency is directly proportional to the amounts of Cl and K in the liquid that have been separated from the ash-water slurry. For a given system, the Cl and K removal efficiency is determined by the concentration of Cl and K in the liquid and by the Degree of solid-liquid Separation (DS). DS, in turn, is greatly affected by the ash concentration in the slurry and the CO3 content of the ash.

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Paper presented at the 2007 International Chemical Recovery Conference in Quebec, Que, May 29 -June 1, 2007.

Keywords: RECOVERY BOILER, FOULING, ASH TREATMENT, PRECIPITATOR ASH, CHLORIDE, POTASSIUM, CARBONATE, REMOVAL EFFICIENCY

Full manuscript available at www.paptac.ca.


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