There are usually three situations when the solvent does not dry out:

(1) The waste solvent contains a lot of water, which causes the set working time of the equipment to come, and there are still a lot of waste liquids in the recycling barrel.

(2) When recovering mixed solvents, the low boiling point solvents have all been recovered, but some high boiling point solvents are not recovered due to insufficient heating temperature.

(3) The set recovery time is too short, the recovery time can be extended appropriately.