Ammonia formation and release in the kraft recovery cycle: an overview

A1 Journal article (refereed)

Internal Authors/Editors

Publication Details

List of Authors: Kymalainen M, Forssen M, DeMartini N, Hupa M
Publication year: 2002
Journal: Pulp & Paper Canada
Journal acronym: PULP PAP-CANADA
Volume number: 103
Issue number: 5
Start page: 38
End page: 41
Number of pages: 4
ISSN: 0316-4004


A significant amount of nitrogen (N) - the amount corresponding to the amount of N in the NOx emission from the recovery boiler - converts to the form of ammonia (NH3) during green and white liquor processing. The NH3-forming compound is cyanate (OCN-), which originates in the smelt from the recovery boiler. There are several release points for this ammonia, bill in all, this ammonia is removed from the recovery process at latest during the first effects of black liquor evaporation.


ammonia, black liquors, kraft liquors, nitrogen, recovery furnaces, smelt synthesis

Last updated on 2020-22-09 at 06:20