Sökning: "cooking liquor"
Visar resultat 1 - 5 av 30 avhandlingar innehållade orden cooking liquor.
Sammanfattning : Lignin is a potential biofuel which can be extracted from kraft cooking liquor. Lignin can also prove valuable as a speciality chemical. By extracting lignin potential economical revenue can be gained by pulp mills, as well as technical benefits such as easier delignification and bleaching. LÄS MER
2. Black liquor gasification : experimental stability studies of smelt components and refractory lining
Sammanfattning : Black liquors are presently combusted in recovery boilers where the inorganic cooking chemicals are recovered and the energy in the organic material is converted to steam and electricity. A new technology, developed by Chemrec AB, is black liquor gasification (BLG). LÄS MER
3. Improved selectivity in kraft cooking through changesin the cooking liquor concentration profiles
Sammanfattning : In the production of bleached kraft pulp, extendeddelignification in the cooking stage is a method of reducingthe load on the receiving waters. A low lignin content (lowkappa number) also means a reduced need for bleachingchemicals. LÄS MER
Sammanfattning : Chemical pulp fibres from wood are commonly used in products associated with packaging as well as with printing and writing. The prevalent way of liberating fibres is by subjecting wood chips to Kraft cooking. This process has a history of almost 130 years and should be both well described and well established. LÄS MER
Sammanfattning : Various process streams in the pulp and/or paper mill contain valuable substances which can be converted into new products, e.g. lignin and xylane. LÄS MER