Is this OK for you?
https://mods.factorio.com/mod/boiler-overhaul
Or is it close to an official Bob mod?
I think the name already implies that it is not a bob mod.
But for the picture: I kind of had no better idea...

The name is completely fine. I'd prefer if you could come up with a different picture? Thank you for checking!

better?

The question was not only about the modname
For example I also keep the bob- prefix for the boilers and I kind of know that you do not like that.
I just do renaming via locales now:
my en.cfg:
bob-oil-boiler-2=Fluid burning boiler 3
bob-oil-boiler-3=Fluid burning boiler 4
...
The problem is: If I rename them internally all the other mods that expect bobs will do horribly stupid things. First and foremost Angels.
Renaming them internally makes a lot of headaches with localised_descriptions,regexes, prerequisites, next_upgrades...

Yes, icon is better. Thanks!

I haven't had a look at the code at all - yet.

Yup, renaming things using locale files is definitely the easiest!