There are a mod that makes belts electric powered.
They are don't consume electric energy, just hidden power poles under them.
You cannot benefit more energy from any setup. So, the heating pipe needs more energy than you get from the powered steam engine.
If you heat your pipes with the electric power 300 kW, then the steam engine make same or less than 300 kW electric energy more.
Any electric reheater make sense only if you power it with free energy, for example solar panels and then the hot steam is a way to accumulate this energy.