If they are the same size, then you can certainly separate it by pulling it out of its pot and gently breaking off the pups at the base by hand or cutting them off with a knife. Then pot them in a fast draining mix (perlite and peet) and give them away to friends. Sometimes, I leave them in clumps as they can look quite nice like that out in the garden for example.

It is easier to find out the species when it is in spike. To look up photos to at least compare the leaf habit, you should visit the Florida Council of Bromeliad Societies web site and click on the Photo Index. You can start by looking at guzmania, aechmea and neoregelia galleries to narrow things down. If it does flower eventually, post a photo for us and I'm sure the experts here can identify it for you.

Here is a link that might be useful: Florida Council of Bromeliad Societies

Hey philofan, thank you so much for the help!

No real need to separate them - I leave mine to form clusters. YOu may want to move the clump to a larger pot and add new soil.