Method for controlling chloride concentration in the flue gas of a recovery boiler
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United States of America Patent
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Nov 23, 1999
Grant Date -
N/A
app pub date -
Jan 17, 1996
filing date -
Jul 23, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for adjusting the chlorine equilibrium in a sulphate cellulose process, wherein part of the chlorine contained in the cycle is separated and removed. In the method, strong odour gases from the sulphate cellulose process are introduced into a soda recovery boiler for burning so that chlorine contained in the liquor is in the form of hydrogen chloride (HCl) in the upper part of the soda recovery boiler and can subsequently be separated from the flue gases in a flue gas scrubber. The chlorine equilibrium is adjusted by removing part of the chlorine-containing washing solution.
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