3 ms·

I have seen this story in several outlets, but haven't heard about NOx emissions from this process. Could someone more knowledgeable shine a light on this?

andor 6y ago
You're right, NOx emissions are always a side-effect when something is burned in our nitrogen-rich atmosphere. This version of the story mentions that NOx and particulates are something they will have to work on: https://www.deingenieur.nl/artikel/first-system-to-use-iron-powder-as-fuel-has-been-built https://www.deingenieur.nl/artikel/first-system-to-use-iron-...
- avodonosov 6y ago
  > when something is burned At high temperatures. Burning coal is clean in this sense, as I understand.
  - avodonosov 6y ago
    After this downvoted I've read around and found that coal power plants also contribute to NOx emissions. But higher temperatures seem to be much more dangerous. I've heard that from critiques of hydrogen burning, they said burning pure hydrogen is unacceptable due to high temperature leading to NOx emission. Found this: > It is believed that an increase in the maximum temperature in the combustion zone above 1850 K leads to unacceptably high NOx emissions , and one of the main ways to reduce emissions by the thermal mechanism is to prevent the formation of hot spots in the flame front. https://translate.google.com/translate?hl=&sl=ru&tl=en&u=https%3A%2F%2Fru.wikipedia.org%2Fwiki%2FNOx_(%D0%BE%D0%BA%D1%81%D0%B8%D0%B4%D1%8B_%D0%B0%D0%B7%D0%BE%D1%82%D0%B0) https://translate.google.com/translate?hl=&sl=ru&tl=en&u=htt...
    - ncmncm 6y ago
      If you burn it in pure oxygen, there are no NOx emissions. You can store the oxygen released when you produce iron from powdered rust, and use it to burn the iron later.
- avodonosov 6y ago
  And this brewery previously was just poisoning people with alcohol, now they in addition pollute atmosphere with highly toxic oxigen-nitrogen compounds. And proud of it.

andor 6y ago

You're right, NOx emissions are always a side-effect when something is burned in our nitrogen-rich atmosphere. This version of the story mentions that NOx and particulates are something they will have to work on: https://www.deingenieur.nl/artikel/first-system-to-use-iron-powder-as-fuel-has-been-built https://www.deingenieur.nl/artikel/first-system-to-use-iron-...

avodonosov 6y ago
> when something is burned At high temperatures. Burning coal is clean in this sense, as I understand.
- avodonosov 6y ago
  After this downvoted I've read around and found that coal power plants also contribute to NOx emissions. But higher temperatures seem to be much more dangerous. I've heard that from critiques of hydrogen burning, they said burning pure hydrogen is unacceptable due to high temperature leading to NOx emission. Found this: > It is believed that an increase in the maximum temperature in the combustion zone above 1850 K leads to unacceptably high NOx emissions , and one of the main ways to reduce emissions by the thermal mechanism is to prevent the formation of hot spots in the flame front. https://translate.google.com/translate?hl=&sl=ru&tl=en&u=https%3A%2F%2Fru.wikipedia.org%2Fwiki%2FNOx_(%D0%BE%D0%BA%D1%81%D0%B8%D0%B4%D1%8B_%D0%B0%D0%B7%D0%BE%D1%82%D0%B0) https://translate.google.com/translate?hl=&sl=ru&tl=en&u=htt...
  - ncmncm 6y ago
    If you burn it in pure oxygen, there are no NOx emissions. You can store the oxygen released when you produce iron from powdered rust, and use it to burn the iron later.
avodonosov 6y ago
And this brewery previously was just poisoning people with alcohol, now they in addition pollute atmosphere with highly toxic oxigen-nitrogen compounds. And proud of it.