Sökning: "Oxygen-delignified kraft pulps"
Hittade 4 avhandlingar innehållade orden Oxygen-delignified kraft pulps.
1. Acid-base properties of and metal ion affinity for oxygen-delignified kraft pulps
Sammanfattning : .... LÄS MER
2. On the importance of oxidizable structures in bleached kraft pulps
Sammanfattning : After cooking, kraft pulps always contain not only residual lignin but also significant amounts of hexenuronic acid and other non-lignin structures oxidizable by permanganate under the standard kappa number determination conditions. These here referred to as false lignin. LÄS MER
3. Some aspects on TCF-bleachability of softwood alkaline pulps
Sammanfattning : The bleachability of softwood oxygen delignified pulps has been studied, i.e. the ease (requirement of bleaching chemicals) with which the pulps can be brightened to a target brightness in totally chlorine free (TCF) bleaching stages, including hydrogen peroxide, ozone and chelating agent stages. LÄS MER
4. Pulp strength enhancement by oxygen delignification
Sammanfattning : Oxygen delignification is widely used in the pulp and paper industry as a part of delignification process between the kraft cook and bleaching. However, its potential has not been fully utilized. LÄS MER