Maltol production energy-saving method and device

The invention relates to a maltol production energy-saving method and device. The device comprises a chloride kettle, a hydrolysis kettle, a neutralization kettle, a crystallization kettle and a sublimation kettle which are sequentially connected. The device is characterized in that the hydrolysis kettle is changed into a hydrolysis tower kettle, the chloride kettle is connected with a plate typeheat exchanger, the plate type heat exchanger is connected with a chloride liquid transfer tank, the chloride liquid transfer tank is connected with the hydrolysis tower kettle through a hydrolysis tower kettle plate type heat exchanger, a hot water tank is arranged between the hydrolysis tower kettle and the hydrolysis tower kettle plate type heat exchanger, a scraper horizontal melting kettle isadditionally arranged between the crystallization kettle and the sublimation kettle, chloride liquid exchanges heat through the plate type heat exchanger, then enters the chloride liquid transfer tank, exchanges heat through