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Earth Science

Mitsubishi Heavy To Build Biggest Zero-Carbon Steel Plant (nikkei.com) 135

Japan's Mitsubishi Heavy Industries will soon complete in Austria the world's largest steel plant capable of attaining net-zero carbon dioxide emissions. Mitsubishi Heavy, through a British unit, is constructing the pilot plant at a complex of Austrian steelmaker Voestalpine. Trial operation is slated to begin in 2021. From a report: The plant will use hydrogen instead of coal in the reduction process for iron ore. The next-generation equipment will produce 250,000 tons of steel product a year. The global steel industry generated about 2 billion tons of CO2 in 2018, according to the International Energy Agency -- double the volume in 2000. The steel sector's share among all industries grew 5 percentage points to 25%. Iron ore reduction accounts for much of the CO2 emissions in steelmaking. Japanese steelmakers including Nippon Steel are developing hydrogen-consuming reduction processes based on the conventional blast furnace design. Mitsubishi Heavy's plant adopts a process called direct reduced iron, or DRI. New blast furnaces require trillions of yen (1 trillion yen equals $9.6 billion) in investment. Although DRI equipment produces less steel, the investment is estimated at less than half of blast furnaces. For DRI to attain the same level of cost-competitiveness as blast furnaces, low-cost hydrogen will be key. Market costs for hydrogen now stand at around 100 yen per normal cu. meter, estimates the Ministry of Economy, Trade and Industry.
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Mitsubishi Heavy To Build Biggest Zero-Carbon Steel Plant

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  • Hydrogen (Score:4, Insightful)

    by creirmer ( 7565204 ) on Thursday December 31, 2020 @12:03PM (#60882250)
    Dumb question, but where does the hydrogen come from?
    • Most of the time, from cooking methane into hydrogen and carbon dioxide. If electricity is cheap (ie not in Australia) it could theoretically come from electrolysis of water.
    • by PPH ( 736903 )

      Even dumber question, but where does the carbon come from?

      • by ceoyoyo ( 59147 )

        Iron ore is various oxides of iron. To refine it, you want to convince the oxygen to leave the iron, but you have to give it a new friend. Traditionally you use carbon, in the form of coal. For example:

        2Fe2O3 + 3C -> 4Fe + 3CO2

        • by PPH ( 736903 )

          They explicitly add carbon to the iron. That's what makes it steel. That's what makes it strong.

      • by jbengt ( 874751 )
        I'm wondering that, too. You can't have steel without adding at least some carbon.
    • by Pascoea ( 968200 )
      Electrolysis: https://www.mhi.com/news/20101... [mhi.com]
    • by AmiMoJo ( 196126 )

      They bought a hydrogen supply chain already. They see net zero carbon industry as the next big thing, the way they stay ahead and avoid the race to the bottom.

      This could have been British, such a shame we sabotaged our country.

      • by gweihir ( 88907 )

        This could have been British, such a shame we sabotaged our country.

        Indeed. Nobody sane will invest in the UK for a long time.

    • Dumb question, but where does the hydrogen come from?

      Nuclear fission power plants.

      At least that's where the hydrogen will come from eventually if Australia wants hydrogen that's low carbon (because nothing is zero carbon), abundant, low in cost, and domestically produced. If it's not abundant and low cost (which is really two ways to describe the same economic phenomenon) then this carbon free steel will not be competitive with imported steel. If the hydrogen is imported, which will be expensive because hydrogen, then Australia may as well import the steel

      • Electricity from wind and solar will not suffice because these are intermittent energy sources which means the electricity will be intermittent, which means it will not be abundant, which means it will not be low cost.

        Intermittent and abundant and have nothing to do with each other.
        You can have an intermittent source, which is abundant, like Germanien wind, or Saharas solar.

        Sorry, no idea why anti change and pro nuke idiots still spread that stupid bullshit.

    • It looks like they will be aiming for green hydrogen (electrolysis) for this. This isn't actually as bad as it sounds. Normally when we say we create hydrogen as a fuel from green energy it means that somewhere else dirty energy continues to thrive. But in this case they are substituting coal firing for it so it actually has a huge benefit.

      Honestly for this application though they should focus on blue hydrogen instead.

  • This is neat new technology, but how are they going to compete with Chinese steel that is made the conventional (and cheaper) way?
    • By governments regulating that steel used in new construction be "carbon neutral" and not from the environmentally abusing cheaper sources.

      • So, how are they going to determine that any particular pile of steel is the one instead of the other?
        • by rbrander ( 73222 )

          The same way that any product is tracked back to manufacturer? Steel has to perform to a defined grade, have a certain tensile strength and all that.

          I admit that with concrete, this actually IS tested on-site; they pull samples from every pour, make a 6" x 12" standard cylinder, and crush it 30 days later in a press...and the whole pour has to be torn out if the sample fails because the concrete chemistry is bad.

          But that's because concrete is actually made on site.

          Steel, they don't take it away and test

          • Wow, that could be very expensive if there are multiple layers of concrete already poured.

            • by PPH ( 736903 )

              if there are multiple layers of concrete already poured

              You won't be given a permit to pour until the local steel inspector comes out, takes a sample of the rebar, submits it to a lab and gets a report back in two weeks.

              From the greenies point of view, this is success. No more construction and progress. We can all go back to a pastoral lifestyle as hunter-gatherers. Chasing and eating bugs.

              • Don't know about that, I've seen them pour more frequently than every two weeks.

              • by jbengt ( 874751 )
                it's already standard for samples of rebar to be tested, though usually in the shop before the lot is sent to the customer.
              • by dryeo ( 100693 )

                And from the capitalist viewpoint it is a total failure. There's profit in rebuilding a building every few years. Fucking greenies trying to force buildings to last and not collapse and kill a bunch of people, some of who would only be injured and therefore creating more profit for someone deserving of having another yacht.

            • by jbengt ( 874751 )
              I've seen concrete pours that failed, and yes, it was expensive to fix. Still cheaper than a collapsed building.
          • Steel, they don't take it away and test it, the product is just tracked back to its manufacture, where samples were tested.

            So, you take the word of the seller that it's "carbon-neutral" steel, aye. About what I thought....

            • Steel, they don't take it away and test it, the product is just tracked back to its manufacture, where samples were tested.

              So, you take the word of the seller that it's "carbon-neutral" steel, aye. About what I thought....

              I love how you completely ignored what the GP said to try to make a point. Instead you've managed to do something else entirely - make yourself look like a complete fucking idiot.

              I know this is going to be hard to understand, but coal is kind-of obvious on the scale that we're talking about here. Are you unfamiliar with what a smelting operation looks like? Do you think everyone is going to miss the railroad built right up to the steel mill and the train cars filled with coal rolling in all of the time?

              If y

        • By detecting C14/C12 ratios in the steel?
        • By getting it tested. Not all steel is created equal, and not all iron ore is created equal either. Because of the rushed and cheapness of it, some places ban Chinese steel because it routinely fails. There's many different methods to testing metal strength, this is what you pay a metallurgist for.
    • by gweihir ( 88907 )

      This is neat new technology, but how are they going to compete with Chinese steel that is made the conventional (and cheaper) way?

      Better quality. Most Chinese steel is in the average range, which is fine for many things but not for all. Producing steel in Europe is only cost-effective if you aim at high to highest quality steels.

    • By producing special steels, aka "alloys"?

      Steel is not steel, there are probably more kinds of steels on the planet than all other alloys combined.

  • Bad Title (Score:4, Informative)

    by weeboo0104 ( 644849 ) on Thursday December 31, 2020 @12:29PM (#60882380) Journal

    Won't Zero-Carbon Steel be too soft to build heavy, industrial equipment?

    • Re:Bad Title (Score:5, Informative)

      by DamnOregonian ( 963763 ) on Thursday December 31, 2020 @01:21PM (#60882634)
      Yes, generally we call zero-carbon steel iron.
      However, "Zero Carbon" has a meaning outside of its individual words.
      It means zero carbon emissions involved in the production of the product. This term is in use internationally, all the way up to the UN.

      So the title may be bad, but only because of widespread ignorance.
      • This term is in use internationally, all the way up to the UN.

        So the title may be bad, but only because of widespread ignorance.

        It's a terrible headline. It should have been "Mitsubishi Heavy to build biggest zero-carbon-emissions steel plant."

        • Why? Because you don't know the meaning of a term?
          Should the world stop using all terms you don't know?
          • I'm with the GP on this. Just because we have an accepted use of a term when it crosses fields in a way that it could be ambiguous we should actually modify the terms appropriately. This is not so dissimilar to watercooling in PCs where all in one units are called "closed loop coolers" and some numpty decided that when you build your own it should be called "open loop cooler". It's also "widely accepted meaning" of the terms, but that doesn't change the fact that those people who are building "open loops" a

            • Eh.
              Ambiguity in normal text, including headlines, is not abnormal for English.
              You often have to use your brain to resolve the ambiguity.

              As an example:

              Mitusbishi Heavy To Build Biggest Zero-Carbon Steel Plant

              Are we talking Zero-Carbon Steel? Or a Zero-Carbon Steel Plant?
              Well, there is literally no such thing as zero-carbon steel, so that only leaves one possibility.

              Your threshold for ambiguity is "partial knowledge of what steel is"; i.e., you know that steel has carbon, but you do not know that i
              • Ambiguity in normal text, including headlines, is not abnormal for English.

                You often have to use your brain to resolve the ambiguity.

                But that's the point. If you are distracted while parsing a headline, it's a bad headline. If it were an intended double entendre, that would be acceptable, but the writer didn't address it in the article. This has the unfortunate effect of making the writer look unknowledgeable about the subject matter.

                Well, there is literally no such thing as zero-carbon steel, so that only leaves one possibility.

                That's what I had originally thought, but searching led me to this Quora response [quora.com], which sounds plausible to me. Top rated response is citing what appears to be an authoritative reference. I can't check it s

    • by jbengt ( 874751 )

      Won't Zero-Carbon Steel be too soft to build heavy, industrial equipment?

      We'll add chrome, nickel, and molybdenum and limit the carbon to less than 0.1% and, I don't know, call it "stainless".

    • Won't Zero-Carbon Steel be too soft to build heavy, industrial equipment?

      Just add nickel until it's strong enough. If that sounds expensive then there's a lot of other metals for trying to make strong and inexpensive alloys from.

      Maybe Australia can use all that uranium they are mining to make structural iron alloys. https://en.wikipedia.org/wiki/... [wikipedia.org]
      They appear too stupid yet to realize that all that uranium they are exporting to China and Japan could be used domestically for energy production. It may in fact be how they end up making all this zero carbon hydrogen to make the

      • Electricity production in Australia is cheaper with wind and solar.
        And you do not make steel from iron oxide by using electric current. Everyone except you know that ...

    • Sure but if you have a bunch you don't need, I have to make a few thousand transformers by June and I'd be happy to evaluate it if you can provide a sample of thin sheets. ;)

      Since it is called "steel," I'm assuming it has a bunch of Si and a little Ni, right?

    • That's what you complain about when there's this train wreck?

      "New blast furnaces require trillions of yen (1 trillion yen equals $9.6 billion) in investment. "

      Do the substitution, that reads:

      "New blast furnaces require $9.6 billions in investment."

      That is complaint worthy.

  • by GregMmm ( 5115215 ) on Thursday December 31, 2020 @12:43PM (#60882460)

    This is pie in the sky. I started to laugh when I got to the part of hydrogen cost. It needs to drop the cost from 100 per normal cu meter to under 10 to make it feasible. Really? That's a factor of 10 reduction. The cost is not in the same ballpark. And to make hydrogen for fuel it takes.... energy. Wonder what will be powering that? There is no free lunch.

    Well I hope they can, cause if they do, it will open up alot of other tech, like fuel cell cars and such.

    • by DDumitru ( 692803 ) <doug&easyco,com> on Thursday December 31, 2020 @12:50PM (#60882496) Homepage

      I saw the cost and did some conversions. This should be $0.97 / 0.082 = $11.83/kg.

      The "retail" cost of hydrogen at a local fueling station is $13.05/kg. This is a high profit item for the vendor (at least after capital costs), so the supply cost at 100 yen/m3 must be an error. I have heard current values under $8/kg to produce the H2 and targets under $4/kg. These would make a lot more sense.

    • The cost of photovoltaic modules has declined by 99% over the last 40 years. A significant part of that drop has occurred in the last decade.

      https://news.mit.edu/2018/explaining-dropping-solar-cost-1120

      The cost of lithium batteries has fallen nearly 90% in the last 10 years.

      https://arstechnica.com/science/2020/12/battery-prices-have-fallen-88-percent-over-the-last-decade/

      Anybody who thinks the current cost of hydrogen is predictive of the future cost is an idiot.

      • Anybody who thinks the current cost of hydrogen is predictive of the future cost is an idiot.

        The cost of Hydrogen is determined by the cost of either that of methane OR electricity.

        Methane isn't going to come down in price so dramatically as Solar has, since it has had decades of cost reduction already.

        If the cost of electricity reduces, then alternative technologies will also benefit.

        • by marcle ( 1575627 )

          Renewables are good for the planet, but they don't drastically reduce the price of electricity. Integrating renewable sources into the grid, and figuring out and implementing storage options such as battery banks, doesn't come cheap. And of course solar cells, windmills, etc. aren't free.
          Eventually we'll reap the benefit of "free" sunshine and wind, but it will take a while.

          • Eventually we'll reap the benefit of "free" sunshine and wind, but it will take a while.

            No, it doesn't work that way. The more wind and solar power added to the electrical grid the more variable the supply becomes. That comes with a cost. This means having to add more storage, or more dispatchable electricity sources. The most popular choices for dispatchable power are hydro and natural gas, because they are cheap in many places around the world. When a nation is short on both then power from wind and sun isn't so cheap because the backup to them isn't so cheap. Germany found this out.

            El

        • The price of Methane is mostly determined the resource it is competing with, and not its "cost".
          And that resources are: oil.

      • by ceoyoyo ( 59147 )

        If there was a strategically critical industry that required a bunch of hydrogen, perhaps some smart cookie would start producing it using all this negative priced renewable energy we keep hearing about.

    • by ShanghaiBill ( 739463 ) on Thursday December 31, 2020 @01:13PM (#60882606)

      Hydrogen electrolysis is about 80% efficient.

      It takes about 35 kwh of electrical energy to generate one kg of H2.

      A cubic meter of H2 weighs about 0.082 kg.

      So about 3 kwh is needed to generate one cubic meter of H2.

      At 10 cents per cubic meter, that is 3 cents per kwh, which is super cheap. Perhaps they can use off-peak renewables and store the hydrogen. But H2 isn't easy or cheap to store. Compression uses a lot of power.

      • by ceoyoyo ( 59147 )

        Looks like it's in the ballpark for onshore wind or solar: https://en.wikipedia.org/wiki/... [wikipedia.org]

        The waste product is steam (instead of hot CO2), so you could generate back some electricity on the other end. You could also site the whole thing on a coast and sell desalinated water as a byproduct.

      •     "A cubic meter of H2 weighs about 0.082 kg."

        Hydrogen is a gas. The density is dependent on the pressure.

        • https://en.wikipedia.org/wiki/... [wikipedia.org]

          0.08988 g/L at STP or 0.0898kg

          So, "about."

          You thought you were being smart, but since you didn't look anything up, and aren't even educated, you were full of shit as always.

          (I'm not edumacated either, but I do look shit up.)

      • by Cyberax ( 705495 )

        But H2 isn't easy or cheap to store. Compression uses a lot of power.

        You don't need to store it under high pressure for industrial use. So containers don't have to be super-strong. Diffusion rate is also likely to not be a serious issue if the typical storage time is within the "several hours to a day" range.

    • by ceoyoyo ( 59147 )

      Or increase the cost of the CO2 emissions. However might one do that, I wonder?

    • This is pie in the sky. I started to laugh when I got to the part of hydrogen cost.

      Did you miss the part where they bought up a hydrogen supply chain?

      Owning that means they get their hydrogen at cost. I doubt we really know how much that is. Hydrogen is not something we tend to have an excess of, so it's quite likely got a very good profit margin. Also keep in mind that they may be selling it to other refineries doing the same thing, so now their efficiency of scale goes up, with a profit attached to those sales of hydrogen.

      It would be pie-in-the-sky if they were just buying hydrogen on t

      • From your linked article...

        In parallel with initiatives promoting green hydrogen, MHI will explore the feasibility of hydrogen derived from fossil fuel in combination with CCUS (carbon capture, utilization and storage) - blue hydrogen - as another approach to decarbonize industries.

        This is going to fail as a source of low carbon hydrogen without nuclear fission power. It's not politically correct to point this out yet. They just need to give everyone enough time and room to conclude that on their own.

    • And to make hydrogen for fuel it takes.... energy. Wonder what will be powering that? There is no free lunch.

      Nuclear fission.
      https://en.wikipedia.org/wiki/... [wikipedia.org]

      Producing hydrogen gets cheap when the process is very hot. The kind of heat that only fossil fuels and nuclear fission can produce at any price that is close to affordable today. Combine this hydrogen production with a plant that produces fresh water, municipal or industrial heat, electricity, and medical isotopes, and the hydrogen will get cheap enough. Put it close to the sea for an effectively unlimited source of water and a heat sink. The sea water i

    • This is pie in the sky. I started to laugh when I got to the part of hydrogen cost.

      Mitsubishi Heavy is a real company. That really builds the factories they announce.

      You're... of an exceptional nature if you think you're better at counting Mitsubishi's beans than Mitsubishi's own bean counters.

      I wish I'd learned about this before the markets closed today, by Monday everybody will know about it and have time to do the math that you pretended to do and got wrong.

  • by tanek ( 876501 ) on Thursday December 31, 2020 @01:39PM (#60882724)
    An even more sustainable method of heating than hydrogen is iron powder. When set on fire, the dust turns to rust, and can then, with (hopefully) zero emission electricity, be turned back into iron, like that one Belgian brewery. It is as close to a closed circuit system as you'd currently get.
  • by Dozy Lizard ( 1708728 ) on Thursday December 31, 2020 @01:47PM (#60882766)

    Just speculating, but if the hydrogen were to come from electrolysis of water then wouldn't it make more sense to just electrolyse the iron ore directly? It turns out the idea is not new https://patents.google.com/pat... [google.com].

  • We are replacing CO2 emissions with H2O emissions. Water vapor traps much more heat than CO2. So we are going to make global warming worse through this. Instead plant some trees. CO2 is plant food.
    • by jbengt ( 874751 )
      No, "we" are using the water vapor to make more hydrogen in a relatively closed cycle.
      Besides that, excess water vapor in air will rain out, returning the atmosphere to the previous equilibrium in about two weeks, compared to the hundreds of years for carbon dioxide to do the same.
    • We are replacing CO2 emissions with H2O emissions. Water vapor traps much more heat than CO2. So we are going to make global warming worse through this. Instead plant some trees. CO2 is plant food.

      Planting trees doesn't get us more steel.

      **Life is too short to be serious**

      Oh. Okay then. Never mind.

  • ..since steel alloy requires something around 2% (or at least some) carbon.

  • Do you guys also not save your grandma from the oncoming truck because it's not 'cost-competitive', or what?

    Geez, ... some people ...

  • C'mon Subaru, you gonna let Mitsubishi punk you like that

    Now you've got to build a dog-friendly zero-carbon steel plant . . . that works well in the snow.
  • by backslashdot ( 95548 ) on Thursday December 31, 2020 @10:32PM (#60883998)

    At least transparent aluminum doesn't contradict itself.

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