Re:Green steel without green hydrogen – can it work?
by pfdietz on Wednesday February 16, 2022 @07:34AM
(#30359201)
As I noted elsewhere, in large quantities it would be stored underground as compressed gas.
The world uses many millions of tons of hydrogen a year. There are already 1600 miles of hydrogen pipeline in the US. So, while materials must be chosen carefully, materials compatible with hydrogen obviously exist.
Transportation is not the only, or even a particularly favorable, use case for hydrogen. Pointing to it to paint all hydrogen uses as inadvisable is not honest, especially in a thread where we're talking about reduction of iron ore, not cars.
Hydrogen is a greenhouse gas in this sense: hydrogen consumes OH radicals in the atmosphere which would otherwise go to destroying methane. So, indirectly, hydrogen causes warming by reducing destruction of methane. The effect is not large, however. Carbon monoxide has a similar indirect effect.
The world uses many millions of tons of hydrogen a year. There are already 1600 miles of hydrogen pipeline in the US. So, while materials must be chosen carefully, materials compatible with hydrogen obviously exist.
Transportation is not the only, or even a particularly favorable, use case for hydrogen. Pointing to it to paint all hydrogen uses as inadvisable is not honest, especially in a thread where we're talking about reduction of iron ore, not cars.
Hydrogen is a greenhouse gas in this sense: hydrogen consumes OH radicals in the atmosphere which would otherwise go to destroying methane. So, indirectly, hydrogen causes warming by reducing destruction of methane. The effect is not large, however. Carbon monoxide has a similar indirect effect.