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this post was submitted on 26 Nov 2023
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A lot of the gas infrastructure was originally built for coal gas and that has a high hydrogen content. Standards have often been kept and so a lot of infrastructure is able to handle it.
https://en.wikipedia.org/wiki/Coal_gas
Did it have high hydrogen? Or was it hydrocarbons rich in hydrogen?
Hydrogen gas. The basic reaction is something like:
3C (i.e., coal) + O2 + H2O → H2 + 3CO
It depends on the process thou and it is usually not super clean.