Method for adjusting the sulphur/sodium ratio in the flue gases

Details Method for adjusting the sulphur/sodium ratio in the flue gases Method for adjusting the sulphur/sodium ratio in the flue gases

1994-07-21

1996-10-08

Czaja, Donald E.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Including recovery of organic by-product

162 31, 162 16, 162 51, 423DIG3, D21C 1106

Patent

active

055628044

ABSTRACT:
A method for adjusting the sulphur/sodium ratio in a soda recovery boiler when strong sulphurous odour gases are burned therein. According to the method, sodium is introduced into the soda recovery boiler in an amount proportional to the amount of sulphur either as sodium hydroxide, sodium carbonate compounds or soap, whereby the sodium and sulphur react, forming sodium sulphate, which can be removed from the flue gases together with fly ash.

REFERENCES:
Terry, Adams, "Kraft Recovery Boiler Physical & Chemical Processes", 1988, American Paper Institute, pp. 34-37, 188-203.
Finnish patent application No. 914521 (9 pgs.).

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