The present invention relates to the technical field of
solvent purification, and discloses a
propylene glycol methyl
ether acetate purification control method and a
propylene glycol methyl
ether acetate purification process, the
propylene glycol methyl
ether acetate purification
control system comprises a rectification device and a rectification
control system, the rectification device comprises a rectification
tower, a
raw material preheater, a condenser, a
reflux tank and a
reboiler, the rectification
control system comprises an environment temperature measuring unit, a
tower top temperature measuring unit, a
tower bottom temperature measuring unit, a feeding temperature measuring unit and a regulation and control module, the rectification control
system is pre-trained with a parameter prediction model, and the parameter prediction model takes the environment temperature, the tower top temperature, the tower bottom temperature and the feeding temperature as input to output regulation and
control parameters. The regulation and
control parameters comprise the opening degree of a steam valve, the power of a condenser and the opening degree of a return valve, a primary distribution controlled parameter is obtained according to a preset distribution strategy, the primary distribution controlled parameter is specifically the optimized regulation and control parameter, and the tower top temperature is controlled within a preset tower top temperature range according to the primary distribution controlled parameter.