PULP AND PAPER APPLICATION NOTE 3.01.04 KRAFT (SULFATE) PULP: RECOVERY BOILER www.kpatents.com BLACK LIQUOR Typical end products Wood pulp, paper, board Chemical curve: R.I. per black liquor conc% by weight at ref. temp. of 20°C Introduction The recovery boiler plays a central role in the chemical cycle of a modern pulp mill. The recovery boiler is a chemical reactor, which is used for recovering chemicals from spent kraf

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