Drying device, solvent recovery device, solvent recovery system, solvent vapor amount signal output method, and solvent recovery method

摘要

PROBLEM TO BE SOLVED: To provide a drying device, a solvent recovery device, a solvent-recovery system, an output method of a solvent vapor quantity signal, and a solvent recovery method, capable of energy saving of operation energy, by properly estimating the quantity of solvent vapor generated in a drying furnace, and by operating a solvent recovery device on the condition based on the result.SOLUTION: A drying furnace 1 is provided for drying a dried material containing a solvent by blowing gas. The drying furnace has a gas quantity signal output unit for indexing the quantity of a blowing gas, a temperature signal output unit for indexing a blowing gas temperature, and a vapor quantity signal output unit for outputting the quantity of a solvent vapor in an exhaust gas for drying the dried material based on the output signals of the gas quantity signal output unit and the temperature signal output unit. The vapor quantity signal output unit outputs the signal of the solvent vapor quantity high as the blowing gas quantity is large, outputs the signal of the solvent vapor quantity low as the blowing gas quantity is small, outputs the signal of the solvent vapor quantity high as the blowing gas temperature is high, and outputs the signal of the solvent vapor quantity low as the blowing gas temperature is low.