Sökning: "raffinering"

Visar resultat 1 - 5 av 8 uppsatser innehållade ordet raffinering.

  1. 1. Offshore Hydrogen Production and Storage for Wave Energy Application : A Techno-Economic Assessment for a Japanese Context

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Andrea Stafverfeldt; [2023]
    Nyckelord :Hydrogen; Green Hydrogen; Hydrogen Storage; Hydrogen Production; Wave Energy; Offshore Hydrogen; Levelized Cost of Hydrogen; Vätgas; Grön vätgas; Vätgaslager; Vätgasproduktion; Vågkraft; Havsbaserad vätgas iv;

    Sammanfattning : There is a well-established market for hydrogen, mainly for refining purposes, producing chemicals, and producing fertilizers. Today, almost all hydrogen is sourced from fossil fuels, with less than 1% of hydrogen sourced from renewable sources. LÄS MER

  3. 2. Exploring Managerial Challenges Emerging from Procurement of Mineral Concentrates : Case study on Boliden

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :SANJIN PEPIC; BABACK ZARIF; [2021]
    Nyckelord :Mining; refining; procurement; copper; complex concentrate; challenges; Gruvindustrin; raffinering; inköp; koppar; komplex koncentrat; utmaningar;

    Sammanfattning : Procurement of copper concentrate is becoming increasingly more challenging as the general quality of concentrates are decreasing. Concentrates are now coming with higher shares of impurities and secondary materials, which makes them harder to process. LÄS MER

  4. 3. Automated security analysis of a SCADA system

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Akzharkyn Duisembiyeva; [2020]
    Nyckelord :threat modeling; DSL; MAL; cyber security; SCADA; hotmodellering; DSL; MAL; cybersäkerhet; SCADA;

    Sammanfattning : Supervisory control and data acquisition (SCADA) is a computer system for analysing, and monitoring data, as well as, controlling a plant in industries such as power grids, oil, gas refining, and water control. SCADA belongs to the category of critical systems that are needed to maintain the infrastructure of cities and households. LÄS MER

  5. 4. The Sustainability related opportunities and challenges with various transformer insulation fluids and business case on re-refining

    Master-uppsats, KTH/Skolan för kemivetenskap (CHE)

    Författare :Ibrahim Gharib Ali Jalal; Abdulbasit Abdulaziz Ali; [2017]
    Nyckelord :Transformer oils; LCA; Re-refining; Business case; Sustainability;

    Sammanfattning : Transformers are electrical devices used in practice to increase or decrease voltages. Transformers are of various sizes and used mainly in power distribution. To provide cooling and insulation, transformer oils are used together with cellulose that acts as a solid insulation. LÄS MER

  7. 5. Rening av väte vid återvinning av aluminium : Purification of hydrogen in aluminum recycling

    Kandidat-uppsats, Institutionen för maskinteknik (MT)

    Författare :Magnus Holmgren; [2013]
    Nyckelord :Väte; Vätgas; Avgasning; Aluminium; Densitetsindex; Återvinning; Aluminiumlegeringar.;

    Sammanfattning : Detta examensarbete har utförts på Stena Aluminium (SA) i Älmhult. Undersökningen handlar om att mäta vätgashalten genom densitetsindexprover på smält aluminium, för att kartlägga hur vätgashalten påverkas av processtegen vid återvinning av aluminium i SAs produktions-anläggning. LÄS MER