HYBRIT - Episode 2: Research

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  • Опубліковано 25 гру 2024

КОМЕНТАРІ • 11

  • @henrich2183
    @henrich2183 4 роки тому +4

    In two years Vattenfall increases the CO2 pollutions with 4 million tons by closing two nuclear reactors. That is 40 % of SSAB:s CO2 emissions. Vattenfall - the double standard company.

    • @eddiemcboss7080
      @eddiemcboss7080 4 роки тому +2

      Wasn’t that the current Swedish government’s decision and not Vattenfall’s?

    • @henrich2183
      @henrich2183 4 роки тому +1

      @@eddiemcboss7080 well it was Vattenfall board's decision. But Vattenfall is a state company and the board contains some politicals.

    • @eddiemcboss7080
      @eddiemcboss7080 3 роки тому

      @@henrich2183 I used to live nearby one of the nuclear power plants (Ringhals)and at the start of 2021 they closed down one of the reactors there. And now the winter turned out to be very cold (in Swedish standards) so the wind turbines produced less energy to the point where they now have to start one of the backup Oil power plants. So I don’t now if Shutting down nuclear reactors is such a smart thing to do at the moment.

    • @henrich2183
      @henrich2183 3 роки тому +1

      @@eddiemcboss7080 nope, it isn't. That was what I tried to tell. But Vattenfall surely makes a lot of money of it. The double standard company.

  • @Jkauppa
    @Jkauppa 4 роки тому

    um, you could make iron the same way you are using electrolysis to make aluminium

  • @lars-goranwillny42
    @lars-goranwillny42 3 роки тому +1

    I would like to comment on the completely incorrect expression "fossil-free steel".
    Steel is an iron-carbon alloy, so to get steel from the HYBRIT or H2 Green Steel processes, carbon in some form must be added to a melt of iron sponge, which is the product of hydrogen-reduced iron oxides.
    The necessary coal for steel production is probably fossil, unless one expects to produce coal for steel production from e.g. charcoal, as has historically been done in Sweden.
    Vattenfall, H2 Green Steel, SSAB, LKAB and other players should reasonably be sure of the facts in their marketing - carbon-free steel does not exist, let alone fossil-free steel.
    Many other alloying elements for steel, such as chromium, nickel, vanadium, manganese, etc. are produced in processes where again carbon (usually as coke from fossil coal) is used as a reducing agent, which contradicts the concept of "fossil-free steel".
    Natural gas as a reducing agent of metal oxides, which is used in some metallurgy processes, can hardly be counted as being fossil-free.
    Biogas (which is produced by digestion of organic material) can be the source of the necessary carbon supplement for steel production.
    By-products still consist of carbon dioxide and water.
    The coal that is included in steel scrap has undoubtedly a fossil origin, which is why scrap metal smelting for steel production cannot give so-called fossil-free steel.
    The important iron-carbon alloys:
    cast iron, ductile iron, with their relatively high carbon contents originate in pig iron, which is the product of blast furnaces.
    How such materials can be produced without coal of fossil origin is a question on which I gratefully look forward to it being communicated and answered in our media.

  • @fernandafeitor9329
    @fernandafeitor9329 5 місяців тому

    Fernanda feitor Coimbra r Ricardo Gomes cantor português muzica portugeza parabéns fabejinhos

  • @fernandafeitor9329
    @fernandafeitor9329 5 місяців тому

    Portugues

  • @abz1261
    @abz1261 3 роки тому

    The problem is this kind of system has to be of the same operating cost of the traditional steel mill plants otherwise its useless there is no use if a steel producer has to put extra money to make the steel just because its eco friendly nobody in the consumer market will bear the extra cost just for this then who is going to pay for it ? I am completely in support of fossil fuel free steel plants but you should also think that its business either you make the steel with the same operating cost or all the other steel plants should be made accountable for the payment of CO2 emissions so that the final steel product has an even value and can compete in the market which is pretty impossible as different countries will have their own regulations anyways I am a small steel mill owner and was looking for a modern steel plant to expand my business and I saw your video and I liked your approach for sustainable steel manufacturing I would be interested to have such a steel plant only and only if the conditions I mentioned above is met and so would be of all the steel mill owners around the world everyone is interested in cutting down operating charges every minute and no one would like to add the extra cost just for an fossil free steel with no customer to pay for the extra cost that is involved I hope you understand but this is our limitations no steel maker wants to pollute the earth but we are left with no choice
    Good Luck I think you might achieve it very best of luck for the future hope you come up with amazing inventions in future