Method and apparatus for processing black liquor of pulp mill
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United States of America Patent
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Aug 6, 2013
Grant Date -
Oct 13, 2011
app pub date -
Oct 1, 2010
filing date -
Oct 5, 2009
priority date (Note) -
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Abstract
The invention relates to a method and apparatus for processing the black liquor of a pulp mill to recover the chemicals and energy therein. In the invention, the black liquor is pyrolyzed in a pyrolysis reactor (6), formed gaseous components are lead for utilization, sand is returned to a fluidized-bed boiler, and solid matter is mixed with water, whereby a soda-water solution is returned to the pulping process and solid carbon to the fluidized-bed boiler (1).
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