Yes, SUBLIMATED is a Scrabble word!

Letter values in Scrabble US: S 1, U 1, B 3, L 1, I 1, M 3, A 1, T 1, E 1, D 2.

Is it a valid word?

SUBLIMATED is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

direct energy or urges into useful activities
make more subtle or refined
remove impurities from, increase the concentration of, and separate through the process of distillation
change or cause to change directly from a solid into a vapor without first melting
vaporize and then condense right back again

passing or having passed from the solid to the gaseous state (or vice versa) without becoming liquid

Also: make pure.