Search for dissertations about: "sulphur and hydrogen removal"

Found 4 swedish dissertations containing the words sulphur and hydrogen removal.

  2. 1. Process models for sulphur, hydrogen and inclusion refining

    Author : Malin Hallberg; KTH; []
    Keywords : ladle refining; mathematical modeling; separation of inclusions; sulphur and hydrogen removal; process control; mass-transfer coefficients; CFD;

    Abstract : .... READ MORE

  4. 2. The Effect of Ladle Treatment on Steel Cleanness in Tool Steels

    Author : Karin Steneholm; Pär Jönsson; Guozhu Ye; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; oxygen activity; inclusion characteristics; vacuum degassing; desulphurization; slag; ladle; hydrogen; nitrogen; deslagging; Teknisk materialvetenskap; Materials Science and Engineering;

    Abstract : The aim of the present work was to get an overview of the steel cleanness in tool steel. Plant trial studies of three steel grades were done with different focuses.Firstly the change of the inclusion characteristics during the vacuum degassing in the ladle was looked upon. READ MORE

  5. 3. Caldicellulosiruptor Saccharolyticus: an Ideal Hydrogen Producer?

    Author : Sudhanshu Pawar; Avdelningen för kemiteknik; []
    Keywords : Caldicellulosiruptor owensensis; Caldicellulosiruptor saccharolyticus; hydrogen; volumetric hydrogen productivity; biofilm; osmotolerance; wheat straw hydrolysate; evolutionary engineering; CSTR; UA reactor and uracil auxotrophy;

    Abstract : Caldicellulosiruptor saccharolyticus is an extremely thermophilic, strictly anaerobic, Gram-positive and cellulolytic microorganism with a natural ability to produce hydrogen (H2) at nearly theoretical maximum yield, i.e. 4 mol/ mol of glucose. READ MORE

  6. 4. Generation of synthesis gas for fuels and chemicals production

    Author : Per Tunå; Avdelningen för kemiteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Synthetic fuels and chemicals; gasification; gas conditioning; simulation; tar-cracking;

    Abstract : Many scientists believe that the oil production will peak in the near future, if the peak has not already occurred. Peak oil theories and uncertain future oil deliveries have stimulated interest in alternative sources of fuel and chemicals. READ MORE