Electronics > Power/Renewable Energy/EV's

Iron Fuel: dodgy tech or legit?

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T3sl4co1l:
They're probably referring to endothermic electrolysis.  The production rate is exponentially lower, hence it isn't of practical consideration.

Tim

Marco:
The problem with iron/zink/aluminium is that the regeneration is inefficient and the need to recover the oxide is a giant PITA.

That said, for the need for heat in industrial processes it might compete with hydrogen at net zero.

Marco:

--- Quote from: nctnico on October 03, 2023, 09:52:48 am ---They have been around for a while. It looks like their main target is to keep power plants running that are now using coal (which is turned into a powder before burned) which could potentially extend the usefull life of existing power plants (and recoup investments). Other than that I don't really see an advantage compared to using hydrogen + fuell cell.

--- End quote ---
Iron is also easier to stockpile. Once salt caverns run out, hydrogen becomes hard to store at seasonal/strategic levels. Storage in old gasfields is still being actively researched (biogenic conversion and lack of recoverability could be a problem).

analityk:
Real PITA is people who never known hydrogen properties and ther technology. Hydrogen itself is PITA, it is soluble in many know alloys, then production is expensive and dangerous, it store low amount of energy in function of volume or weight, and in electrolysis is costly to produce due to overvoltage that is need to release it on electrode. And it is not so reactive like people may think.

One of the most efficient method to store electric energy is li-ion accumulators. Also it efficiency is under 90% (because inverters efficiency, electrodes polarisation, internal heat due to internal series resistance etc).

I recommend to you to get some electrochemical table's and count on it and compare. I think gpt can help something.

coppercone2:
I thought a ridiculous amount of energy goes in globally towards steel production, and alot of it makes major pollution (china).

increase demand for iron and then china and india will pollute us to hell

china is like Bethlehem steel, they don't do it efficiently in alot of places. they shut down here because it was a BS process overall

al production forces you to use electricity, because of the process, but its possible to make dirty steel. And if you just want iron, like pig iron, then oh boy your gonna have people just burning whatever the hell they find, gonna look like victorian england. the steel production process keeps quality of the process up. right now it makes sense to product pig iron right where you make steel, so you can benefit from the steel industry, I think it keep it civilized with higher quality and reliability reactors etc.

if you goal is just iron then you will get some serious BS being built IMO. the great leap forward included chinese citizens producing pig iron in their yards.... they stopped because it was deemed useless and inefficient towards steel production because you can transfer molten metal into the steel maker to save energy without remelting it direct from ore, once you get a use for pig iron in cooled form... but in this case you might make pig iron a marketable sell able product by the pound. They could not use the pig iron while still hot (saving energy) to make good steel in small scale production. It caused terrible pollution according to historical anecdotes. I think making cold pig iron valuable again is a mistake and will lead to every third world country making massive amounts of pollution for profit, so long they can get the ore.

https://en.wikipedia.org/wiki/Direct_reduced_iron
lack of demand and shipping is making it unappealing to make in small scale though, I think..

Pig iron was historically poured directly out of the bottom of the blast furnace through a trough into a ladle car for transfer to the steel mill in mostly liquid form; in this state, the pig iron was referred to as hot metal. The hot metal was then poured into a steelmaking vessel to produce steel, typically an electric arc furnace, induction furnace or basic oxygen furnace, where the excess carbon is burned off and the alloy composition controlled. Earlier processes for this included the finery forge, the puddling furnace, the Bessemer process, and the open hearth furnace.

Modern steel mills and direct-reduction iron plants transfer the molten iron to a ladle for immediate use in the steel making furnaces or cast it into pigs on a pig-casting machine for reuse or resale. Modern pig casting machines produce stick pigs, which break into smaller 4–10 kg piglets at discharge.

right now it reduces alot of cost to still use it hot though, so cold its less valuable. for batteries it would be fine.

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