Sökning: "sulfate mills"
Visar resultat 1 - 5 av 6 avhandlingar innehållade orden sulfate mills.
1. Prevention of barium sulfate deposition in a D (Chlorine Dioxide) - stage : a chemical model
Sammanfattning : .... LÄS MER
2. Asthma and cancer among pulp and paper mill workers
Sammanfattning : There were two main aims of this thesis. One was to study if repeated high exposures to irritant gases give rise to new-onset asthma, and the other was to study if exposure in pulp and paper mills were associated with cancer. LÄS MER
3. On the removal of calcium by carbonate precipitation in sulfate pulp mills
Sammanfattning : .... LÄS MER
4. Sodium Salt Scaling in Black Liquor Evaporators
Sammanfattning : Sodium salt scaling has long been recognized as a problem in the recovery cycle of kraft pulp mills, especially in black liquor evaporators. In the black liquor evaporation, as the black liquor becomes more concentrated, the sodium salts, particularly sodium carbonate and sodium sulfate, will saturate and precipitate from the solution. LÄS MER
5. The initial phase of the sodium bisulfite pulping of softwood dissolving pulp
Sammanfattning : The sulfite pulping process is today practised in only a small number of pulp mills around the globe and the number of sulfite mills that use sodium as the base (cation) is less than five. However, due to the increasing interest in the wood based biorefinery concept, the benefits of sulfite pulping and especially the sodium based variety, has recently gained a lot of interest. LÄS MER