Hi,
I've downloaded this mod today and got this same issue. I found quickly a fix, which requires a Console command.
The recipes do not appear if you install the mods on a save with the Advance Oil Processing ALREADY researched.
Either launch a new save, or use the following Console command :
/c game.player.force.technologies['advanced-oil-processing'].researched=false; game.player.force.set_saved_technology_progress('advanced-oil-processing', 0)
And research the technology again, the recipes will appear.
I do not know how to fix this in the mod itself.
Thank you for reading,
The_Najo