Solvent separating unit used for evaporation and recovery of solvent system and application method thereof

Abstract

The invention provides a solvent separating unit used for evaporation and recovery of a solvent system. A feed pipe arranged at the top of a barrel included by the solvent separating unit is communicated with a vertical condensate conduit through a transition pipe; the lower part of the vertical condensate conduit is provided with a horizontal condensate guide plate which is arranged to be slightly higher than a two-phase line; the central part of the vertical condensate conduit penetrates a metal phase-splitting mesh; an organic phase overflow groove with an upper opening is arranged above the metal phase-splitting mesh; and the top of the organic phase overflow groove is aligned with a liquid level line. In usage, a condensate successively flows through the transition pipe, the vertical condensate conduit and the horizontal condensate guide plate and then into the barrel for phase splitting; a water phase flows into a water phase discharging pipe, and an organic phase successively flows through the metal phase-splitting mesh and the organic phase overflow groove and then into an organic phase discharging pipe; and an inverted Y-shaped pipe can be arranged out of the barrel so as to adjust the two-phase line and prevent siphonage. According to the invention, the solvent separating unit has the advantages of an improved phase splitting effect, an improved phase splitting speed, a simple structure, convenience in operation, a wide application scope and capacity of preventing siphonage.

Description

technical field [0001] The invention relates to the technical field of solvent separation, in particular to a solvent separation device for evaporating and recovering a solvent system and its use method, which is specifically suitable for improving the separation effect and speed of organic phase and aqueous phase mixed liquid, and has a simple structure and easy operation . Background technique [0002] In the general solvent recovery system, the method of stripping or azeotropic distillation is generally used to recover the solvent, and a rectification column is also used. The extractant used in the solvent extraction process is mostly a combination of various solvents. After completing an extraction, washing, and stripping process, the extractant can be reused for the next same process and recycled. During such an extraction process, part of the extractant will be dissolved in the liquid to be extracted (usually an aqueous solution). In order to reduce production costs, ...

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the defects and problems in the prior art that the separation effect of the mixed liquid of the organic phase and the water phase is poor, the phase separation speed is slow, the structure is complicated, and it is not easy to operate, and a kind of mixed liquid of the organic phase and the water phase is provided. The liquid separation effect is better, the phase separation speed is faster, the structure is simple, and the solvent separation device and its use method for evaporating and recovering solvent systems are simple and easy to operate

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