as long as there is no other use planned for SO3 i would say the most interesting way to do this would be with a three kind educt chemical plant. this might also be interesting for some other recipes that are now two step but could be one step with a reactor building that is enabled for it.

[…]Angel combines these three reaction steps. In my opinion it is a good choice if there is no other use for intermediate products. Adding of free compressed air does not give much interest into the fabrication chain.

it would be a good choice if there was a source of oxygen visible or implicated ...

Arch666Angel wrote:There are more examples where I left out/combined steps into one recipe, although I cant remember which ones.

i do not understand: which reactions are combined? as far as i know there is no reaction to go from so2 to h2so4 without adding some oxygen. so where is the oxygen coming from? air?

hi,
i just started using the angelspetrochem mod – nice work btw – and noticed a very strange recipe from a chemistry point of view: 6SO2 + 4H2 --> 5H2SO4
While it might in theory be possible to make H2SO3 ( Sulfur ous acid ) from these starting educts, it would be very wasteful. In reality SO2 is ...