| 摘要 |
<p>A system for recovering solvents or solvent mixtures dissolved in air or in an inert gas, characterized in that the system comprises at least a drier-exchanger (6,7) into which there is produced a gas flow containing the solvents to be recovered. The drier-exchanger (6,7) performs a first cooling operation (8,8') on the gas flow, to a temperature included between -10 DEG C and -30 DEG C. The gas flow (14), at the output of the drier-exchanger (6,7), is introduced into a separating condenser (20), cooled by a liquid nitrogen evaporator (21). The gas flow (23), which has been cooled to a temperature from -80 DEG C to -150 DEG C, is subjected to the condensing of the solvent, which is conveyed to the outside and recovered, whereas the gas fluid, upon depuration, is again introduced into the dier-exchanger, for cooling (28,28') the latter. <IMAGE></p> |
