Solvent recovery equipment

Abstract

The invention relates to the technical field of recovery of steam, waste gases and the like, and particularly relates to solvent recovery equipment. The solvent recovery equipment comprises a reactiontank, a heater for heating the reaction tank, a dedusting unit and a recovering unit, wherein the dedusting unit comprises a dust suction blower, an exhaust tube, a motor, a rotating shaft and a gear; one end of the exhaust tube communicates with the reaction tank, and the other end of the exhaust tube communicates with the dust suction blower; an output shaft of the motor is connected with the rotating shaft, a hair brush for brushing the internal wall of the exhaust tube is arranged at one side of the rotating shaft, a supporting plate is arranged at the other side of the rotating shaft, and a supporting plate is rotatably connected with the gear; an inner gear ring engaged with the gear is arranged on the internal wall of the exhaust tube, and a rolling shaft for cleaning the internalwall of the exhaust tube is arranged on the gear; the recovering unit comprises a condenser tube and a recovery tube communicating with the exhaust tube, a one-way valve, a liquid outlet for collecting a liquid solvent, and an adapter communicating with a vacuum device are arranged on the recovery tube, and the condenser tube is arranged on the external wall of the recovery tube. By adopting the solvent recovery equipment, the exhaust tube can be dedusted.

Description

technical field [0001] The invention relates to the technical field of recovery of steam, waste gas, etc., in particular to a solvent recovery device. Background technique [0002] In the field of organic chemistry, low-molecular-weight organic solvents are often used to dissolve various types of high-molecular-weight solutes for pre-treatment or post-treatment steps such as preparation and purification. After pre-treatment or post-treatment, it is often necessary to remove the solvent from the solute Remove and recycle to prevent solvent volatilization from affecting the environment. Since most of the solvents are low-molecular-weight organic compounds, they have good volatility. Therefore, in the process of recovering solvents, heating is often used to make a large amount of solvents form steam and volatilize to separate them from the solute. and recover the solvent. [0003] In the process of preparing single-base medicine, nitrocellulose will be used as raw material. I...

AI Technical Summary

Problems solved by technology

[0003] In the process of preparing single-base medicine, nitrocellulose will be used as raw material. In the preparation process, in order to separate and recycle the solvent, the prior art generally heats the reaction material and uses an exhaust pipe to extract the solvent vapor, but in Before and after the single-base drug is formed, some digestive cotton dust will always enter the exhaust pipe; especially when making small-sized drugs, due to the large air volume or lack of equipment management, part of the drug particles will be sucked into the air duct

These dusts are adsorbed on the inner wall of the exhaust pipe, and over the years, it is easy to block the exhaust pipe and affect the normal recovery of solvents

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