Acetone is not an appropriate solvent for making 'honey oil'. Even if you had access to pure acetone, it's still NOT a safe alternative to butane, and it's still HIGHLY flammable, so you don't reap any benefits from that, either. Acetone is dangerous and has no place in your cannabis consumption! Be safe!

If the butane ignited, you did it wrong. Honey oil, properly made and with the butane correctly evaporated off, will NOT ignite like that.