D - Textiles – Paper – 21 – C
Patent
D - Textiles, Paper
21
C
9/36.3
D21C 11/04 (2006.01)
Patent
CA 1115464
ABSTRACT OF THE DISCLOSURE The present invention provides a method for carbona- tion of green liquor by means of a concentrated carbon dioxide gas, of more than 50 per cent by volume, under elevated pressure and for separation of sulphur from the above solution as hydro- gen sulphide, whereby the hydrogen sulphide is not removed from the solution in the carbonating apparatus but only in the process steps following the carbonation, characterized in that the carbonation is performed in a mixing reactor under a pressure that is higher than the summed-up total counter-pressure of the component pressures of the carbon dioxide and hydrogen sulphide in the green liquor solution and the component pressure of water vapour.
299099
Alava Lauri
Hassinen Ilpo
Rasanen Reino
Reilama Ismo
Mcfadden Fincham
Oy Rauma-Repola
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