Distillation column used for solvent recovery

Abstract

The invention belongs to the technical field of solvent recovery, and more specifically discloses a distillation column used for solvent recovery. The distillation column used for solvent recovery comprises a distillation tank, a power unit, and a spoiler; a separating plate is slidingly arranged in the lower part of the distillation tank; springs are arranged between the separating plate and theinternal wall of the distillation tank; the distillation tank is provided with a single-way door below the separating plate; the internal wall at the middle part of the distillation tank is provided with a plurality of spiral grooves; the spoiler is connected with rolling balls via hinge joint; a pressure valve is arranged on the spoiler; a steam pipe is fixedly arranged on the lower surface of the spoiler; the side wall of the steam pipe is provided with a first single-way valve; the lower end of the steam pipe is connected with a corrugated pipe through a universal joint; the side wall of the distillation tank is provided with a material storage sandwich layer; a feed pipe is arranged in the material storage sandwich layer; a second single-way valve is arranged on the feed pipe; the power unit is used for driving waste solvent in the material storage sandwich layer to move into the distillation tank through the feed pipe. The distillation column is used for solvent recovery, is capable of reducing gas rising speed, ensuring distillation effect, and increasing product quality.

Description

technical field [0001] The invention belongs to the technical field of solvent recovery, in particular to a distillation tower for solvent recovery. 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. Solvent recovery usually uses the principle of distillation. The solvent to be recovered is turned into a gaseous state by heating and distillation, and the vapor enters the cooling system to liquefy and flow out, so that clean solvent is recovered. Through solvent recovery, waste, dirty and old solvents can be regenerated and recycled, which can not only save a lot of procurement costs, but also reduce environmen...

AI Technical Summary

Problems solved by technology

[0003] Solvent recovery often requires the use of distillation equipment for separation and purification. However, the existing distillation equipment has some defects. During the distillation process, the vaporized liquid rises quickly in the distillation tower, and there is no effective barrier on the way to make it rise. If the speed is too fast, the contact between the gas and the liquid is insufficient, the interphase mass transfer cannot be carried out effectively, and the expected distillation effect cannot be achieved, which will adversely affect the quality of the product.

At the same time, after the distillation has been carried out for a period of time, the waste solvent that has been purified by distillation must be discharged from the distillation device, and then the new waste solvent to be recovered is recycled and added to the distillation device. The operation is troublesome, and the recovery process is not continuous, resulting in low recovery efficiency.

Images