Essays about: "ash retention"

Found 3 essays containing the words ash retention.

  1. 1. Propensity of bed materials used in dual fluidized beds to retain ash-forming elements from biomass fuels

    University essay from SLU/Dept. of Energy and Technology

    Author : Björn Folkeson; [2014]
    Keywords : fluidized bed; ash retention; gasification; combustion; bed material;

    Abstract : The main aim of this work was to investigate the propensity of bed materials to retain ash-forming elements from biomass under conditions relevant to dual fluidized bed gasification (DFBG). The investigation was carried out in a laboratory-scale bubbling fluidized bed reactor in which biomass was gasified with steam and the unconverted char was combusted in the temperature range 800–900 ° C. READ MORE

  2. 2. Propensity of bed materials used in dual fluidized beds to retain ash-forming elements from biomass fuels

    University essay from

    Author : Björn Folkeson; [2014]
    Keywords : Fluidized bed; ash retention; gasification; combustion; bed material; Fluidiserad bädd; askämnen; förgasning; förbränning; bäddmaterial;

    Abstract : The main aim of this work was to investigate the propensity of bed materials to retain ash-forming elements from biomass under conditions relevant to dual fluidized bed gasification (DFBG). The investigation was carried out in a laboratory-scale bubbling fluidized bed reactor in which biomass was gasified with steam and the unconverted char was combusted in the temperature range 800–900 ° C. READ MORE

  3. 3. Urine drying with ash and lime at temperatures 20-60°C : nutrient recovery from source separated urine

    University essay from SLU/Dept. of Energy and Technology

    Author : Shanta Dutta; [2012]
    Keywords : Urine; drying; evaporation; treatment; ammonia; ammoniumnitrogen; nutrient; recycling; recovery; urea hydrolysis; fertilizer; ecological sanitation; eco-san; agriculture;

    Abstract : Utilization of source-separated urine in agricultural production has been practiced and different treatment options have been developed in last two decades. The purpose of this study was to develop a drying technique for untreated human urine added to ash and lime as drying agent at temperature 20-60°C. READ MORE