Batch kraft cooking of spruce wood
Batch kraft cooking of spruce wood
The paper deals with batch kraft cooking of pulp from spruce wood. The kappa number of the cooked pulp varied from 18.1 to 50.1, depending on varying H-factor from 550 to 3 190 h. A relationship between the kappa number of pulp and the H-factor was developed. The conditions were regarded in which rejects were lower than 1 %. It was found that the mass loss of the pulp after the kappa number determination according to TAPPI Test Method was not only responsible for the solubility of residual lignin present in pulp, but also a part of hemicelluloses and cellulose was solubilized.
- University of Pardubice Czech Republic
delignification, sulfátová buničina, kraft pulp, batch cook, diskontinuální várka, delignifikace, smrk, spruce
delignification, sulfátová buničina, kraft pulp, batch cook, diskontinuální várka, delignifikace, smrk, spruce
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