Essays about: "Softwood kraft pulp mill"

Found 5 essays containing the words Softwood kraft pulp mill.

1. 1. Washing efficiency in the pulp mill : An evaluation of the washing efficiency in SCA Munksund's pulp mill

   University essay from KTH/Fiber- och polymerteknologi

   Author : Malin Malmberg; [2023]
   Keywords : Chemical Pulp; Lignin; COD; Pulp Washer; Kraft Pulping; Pappersmassa; Lignin; COD; Massatvätt; Sulfatmassaprocessen;

   Abstract : Munksunds pappersbruk är ett integrerat massa- och pappersbruk som består av två fiberlinjer, en barr- och en lövlinje där båda kokarna är kontinuerliga med efterföljande tvättsteg. En kartering av COD (eng. Chemical Oxygen Demand) och natrium utfördes för båda linjerna för att utvärdera tvätteffektiviteten. READ MORE

3. 2. Liquefaction of Softwood Bark towards Biochemicals and Biofuels

   University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

   Author : Emma Nordström; [2018]
   Keywords : Softwood; Bark; Liquefaction; Hytrotropic acid; Lignin; Biofuel; Bio-oil; Spruce; Catalyst; Zeolite;

   Abstract : The energy consumption in the world is increasing at the same time as the fossil fuel resources are limited. This is causing a rising interest in renewable energy sources over the world. To reduce dependency on fossil fuel sources biomass is an excellent alternative. READ MORE

4. 3. Impact of hardwood black liquor addition on the chemical and physical properties of kraftliner - a lab study

   University essay from Luleå tekniska universitet/Industriell miljö- och processteknik

   Author : Fredrika Sundvall; [2017]
   Keywords : Hardwood black liquor; Xylan; Kraft pulping; Black liquor.;

   Abstract : Kraft pulping, also known as sulphate pulping is a complex process where the wood components are liberated from each other facilitated by chemical reactions. During the pulping process some dissolved and degraded compounds end up together with the spent cooking chemicals in the black liquor. READ MORE

5. 4. The influence of pH on fiber and paper properties : Different pH levels during beating and sheet forming

   University essay from Karlstads universitet/Institutionen för ingenjörs- och kemivetenskaper

   Author : Jennie Jansson; [2015]
   Keywords : pH; beating; WRV; fiber charge;

   Abstract : The effect of pH on fiber and paper properties, during beating and sheet formation, was investigated for three different pulps. The pulps were pH adjusted to four different pH levels between 3 and 9. Isotropic laboratory sheet were made of both unbeaten and beaten pulps. READ MORE

6. 5. The effect of charged groups on the beatability of pulp fibres

   University essay from KTH/Skolan för kemivetenskap (CHE)

   Author : Erik Melander; [2011]
   Keywords : Kraft pulp; softwood; carboxymethylation; swelling; PFI beating; refining; beatability; charged groups;

   Abstract : The purpose of this bachelor thesis was to investigate how charged groups within the pulp fibre affect the beatability and the strength of the papers. To obtain different levels of charges on the pulp it was carboxymethylated. The different pulp samples were beaten to different degrees to investigate how charges interact with the beating. READ MORE