| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and an apparatus for recovering a solvent, in each of which the energy consumption required for solvent recovery can be reduced.SOLUTION: The method for recovering the solvent comprises: a step of dissociating a gas-liquid mixed fluid from a solid-liquid mixture of a hydrophilic solvent with organic sludge; a gas liquid separation step 2 of subjecting the dissociated gas-liquid mixed fluid to gas liquid separation to recover a primary treatment liquid 21; a condensation step 3 of condensing a primary treatment gas 22 to be generated at the gas liquid separation step 2 to recover a secondary treatment liquid 41; a dissolution step 5 of bringing a secondary treatment gas 42, which is generated at the condensation step 3, into contact with a liquid for dissolving the gas to recover a tertiary treatment liquid 51; and a regeneration step 7 of purifying the primary treatment liquid 21, the secondary treatment liquid 41, and the tertiary treatment liquid 51 to recover the hydrophilic solvent.SELECTED DRAWING: Figure 1 |
