Can I use grants to help pay off my school loans?

I graduated from a vocational school a year and a half ago and was wondering if I could pay off my student loans with grants. I am not currently enrolled in school, but am thinking of enrolling in the Fall. I don't think I'll be able to pay my loans off by the time school starts, so I'm hoping I could use grants. If so, what are some good grants that I could apply for? Where should I go to find them? Thank you and have a nice day