Mixture of cooking chemicals and dissolved wood material remaining after sulphate cooking; recovered during pulp washing, concentrated by evaporation and burned in the recovery boiler to regenerate the cooking chemicals and generate energy
The solution remaining after cooking pulpwood in the soda or sulfite papermaking process.
A byproduct of the paper production process that can be used as a source of energy.
Is the spent liquid obtained as part of the sulphate pulping process.
Spent cooking liquoThe pulp production depends on the number of batches (i.e. cooks) that are processed.r from a kraft cook, containing dissolved organic material and residual alkali compounds.
(Pulping Liquor): The alkaline spent liquor removed from the digesters in the process of chemically pulping wood. After evaporation, the liquor is burned as a fuel in a recovery furnace that permits the recovery of certain basic chemicals.
The name given to the consumed cooking liquid in production of sulphate pulp. Black liquor is burnt in the soda recovery boiler at which time the wood substances (primarily lignin) provide energy for steam and electricity production. One requirement for both the environment and economy is that the chemicals consumed in black liquid are reproduced in the sulphate mill to new cooking chemicals.
Spent cooking chemicals from the paper making process.
Black liquor is a recycled byproduct formed during the Kraft process, the sulfate method of chemical pulping of wood in the papermaking industry. In this process, lignin is separated from cellulose, with the latter forming the paper fibers. Black liquor is the combination of the lignin residue with water and the chemicals used for the extraction.