Essays about: "Selective Catalytic Reduction"

Showing result 11 - 15 of 24 essays containing the words Selective Catalytic Reduction.

  1. 11. Sulfur poisoning and regeneration of copper zeolites for NH3-SCR : Effect of SO2/SO3 ratio

    University essay from Luleå tekniska universitet/Kemiteknik

    Author : Åsa Högström; [2018]
    Keywords : Cu-zeolites; Ammonia-SCR; Sulfur poisoning; Regeneration; Kinetic model;

    Abstract : The road transportation is a big source for the release of NOx emissions. NOx has been confirmed to cause negative affect on the air-quality especially in the urban areas, there are therefore regulations for allowed released amount from vehicles. READ MORE

  3. 12. CFD-simulations of urea-waterspray in an after-treatment systemusing Star-CCM+

    University essay from KTH/Mekanik

    Author : Emelie Trigell; [2018]
    Keywords : after-treatment systems; selective catalytic reaction SCR ; AdBlue; multiphase flow; multi-component liquid; Unsteady Reynolds Average Navier Stokes RANS ; wall film formation; solid deposits; efterbehandlingssystem; selektiva katalytiska reaktioner; AdBlue; flerfasstr ¨ommning; flerkomponentvätska; Unsteady Reynolds Average Navier Stokes; väggfilm; avlagringar;

    Abstract : The legislation has forced the vehicle industry to reduce tail-end emissions. The air pollutant nitrogen oxide (NOX) has been shown to have a negative impact on human health and the environment. One of the key technologies to reduce the levels of NOX emitted from a vehicle is by implementing an after-treatment system. READ MORE

  4. 13. Fe-Mo-oxide of spinel structure for methanol oxidation

    University essay from Lunds universitet/Kemiteknik (CI)

    Author : Maria Thulin; [2016]
    Keywords : iron molybdate catalyst; methanol oxidation; Fe-Mo-oxide; spinel structure; formaldehyde catalyst; chemical engineering; kemiteknik; Technology and Engineering;

    Abstract : The aim of this master thesis was to investigate a Fe-Mo-oxide catalyst of spinel structure for methanol oxidation to produce formaldehyde and determine if the spinel could be an alternative to the commercial Formox catalyst used today. This included firstly, synthesising the catalyst to get more knowledge of the formation of the structure and secondly, determine the activity, selectivity to formaldehyde and stability of the catalyst. READ MORE

  5. 14. Investigation and evaluation of potential exhaust braking strategiesusing model predictive control

    University essay from KTH/Reglerteknik

    Author : Erik Hallqvist; [2015]
    Keywords : ;

    Abstract : The eciency of today's aftertreatment system relies on the exhaust gas temperature.The Selective Catalytic Reduction system, which is a part of theaftertreatment system has an operating temperature window which starts atapproximately 200C in order to work as eciently as possible. READ MORE

  6. 15. Fuel and time optimized driving of heavy trucks with respect to Euro VI legislations

    University essay from KTH/Optimeringslära och systemteori

    Author : Marcus Bergman; [2014]
    Keywords : ;

    Abstract :   Saving fuel for heavy trucks travelling on a highway is possible by using the vechicles' weight and the knowledge about the road topography ahead. This can be done by a Look Ahead Cruise Controller. Such a controller can calculate an optimal driving strategy for the road segment ahead. READ MORE