Waste solvent recycling device

Abstract

The invention belongs to the technical field of solvent recycling, and more specifically discloses a waste solvent recycling device. The waste solvent recycling device comprises a raw material feedingunit, a distillation unit, and a condensation unit; the distillation unit comprises a pedestal, a rotating cylinder, a spiral barrel, and a differential mechanism; the side wall of the rotating cylinder and the side wall of the spiral barrel are provided with sandwich layers; the spiral barrel is rotatingly arranged in the rotating cylinder; the sandwich layer on one end of the rotating cylinderis communicated with the sandwich layer of the spiral barrel; the rotating cylinder is rotatingly arranged on the pedestal; one end of the rotating cylinder is designed to be tapered, and the other end is designed to be cylindrical; the external wall of the spiral barrel is provided with spiral blades; one end of the spiral barrel is connected with a feed pipe; a doctor blade is arranged in the spiral barrel in a sliding manner; a pressure valve is arranged on the doctor blade; the spiral barrel and the doctor blade are connected via a spring; the spiral barrel is provided with a discharge hole; one end of the rotating cylinder is provided with a solid output pipe, and the other end is provided with a gas liquid outlet pipe. The waste solvent recycling device is used for recycling waste solvent; in distillation treatment, adhesion of colloid materials onto the internal wall of the distillation unit is avoided, and influences on normal operation of distillation are avoided.

Description

technical field [0001] The invention belongs to the technical field of solvent recovery, in particular to a waste solvent recycling device. Background technique [0002] A large amount of waste solvents will be produced in industrial production, and direct discharge of these waste solvents will pollute the environment, so these waste solvents are usually treated before discharge. Some solvents in waste solvents can be recycled, and the recovered solvents can be reused in industrial production, saving resources and reducing production costs of enterprises. [0003] At present, the conventional treatment method is to use an atmospheric distillation device to recover the solvent, but the waste solvent produced in the production process of some industries not only contains the solution, but also contains resin, solid particles, etc. As the solid concentration increases during distillation, the viscosity increases. Distillation will turn into jelly, causing the device to fail to...

AI Technical Summary

Problems solved by technology

[0003] At present, the conventional treatment method is to recover the solvent with an atmospheric distillation device, but in some industries, the waste solvent produced in the production process not only contains the solution, but also contains resin, solid particles, etc. With the increase of the solid concentration during distillation, the viscosity increases. Distillation will turn into jelly, causing the device to fail to operate, and it is also very difficult to discharge the residue from the device. The waste solvent cannot be completely recovered by using conventional methods and devices. The distillation residue has to be incinerated as waste oil. During the process, a large amount of carbon dioxide and soot are emitted into the atmosphere, which not only wastes oil resources but also pollutes the environment.

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