Sökning: "ash retention"

Hittade 5 uppsatser innehållade orden ash retention.

  1. 1. Expancel mikrosfärernaspåverkan på bestrykningssmetoch bestruken kartong

    Magister-uppsats, Karlstads universitet

    Författare :Ahmad Chehade; [2022]
    Nyckelord :Kartong; Expancel Mikrosfärer; Bestrykning; Kompressibilitet; Viskositet;

    Sammanfattning : In Sweden, paperboard has been an essential product in the export market and is mainly used as packaging material. Packaging materials corresponded to 66% of all paper and board production in Sweden for the year 2020, which is an increase of 2,5% compared with the previous year [1]. LÄS MER

  3. 2. Produktion av näringspellets med varierad mekanisk kraft och ligninhalt : Utvärdering av pelletsegenskaper och energianvändning

    M1-uppsats, Karlstads universitet/Institutionen för ingenjörs- och kemivetenskaper (from 2013)

    Författare :David Garcia Lawson; [2019]
    Nyckelord :Pyrochar; pellets; pellet properties; Biokol; pellets; pelletegenskaper;

    Sammanfattning : En fortsatt ökning av koldioxidutsläppen leder ekosystemen på jorden mot snabba, farliga och irreversibla klimatförändringar. Den svenska skogsindustrin är en viktig aktör för att tillfredsställa framtidens efterfrågan på förnyelsebara bioprodukter. Produktionsökningen innebär ökad påtryckning på de svenska skogsmarkerna. LÄS MER

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

    Uppsats för yrkesexamina på avancerad nivå, SLU/Dept. of Energy and Technology

    Författare :Björn Folkeson; [2014]
    Nyckelord :fluidized bed; ash retention; gasification; combustion; bed material;

    Sammanfattning : 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. LÄS MER

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

    Uppsats för yrkesexamina på avancerad nivå,

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

    Sammanfattning : 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. LÄS MER

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

    Master-uppsats, SLU/Dept. of Energy and Technology

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

    Sammanfattning : 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. LÄS MER