Skid-mounted condensing membrane separation for small air volume exhaust gas recovery unit, suitable for small laboratory devices

Skid-mounted condensing membrane separation for small air volume exhaust gas recovery unit, suitable for small laboratory devices

In small air volume exhaust gas scenes such as laboratories, pilot workshops, and small production lines, the air volume is usually between tens to hundreds of cubic meters per hour, with many types of solvents, large concentration fluctuations, and limited installation space. Large industrial equipment is not used,activated charcoalThe adsorption efficiency is low, the carbon change is frequent, and the direct discharge is facing the pressure of environmental protection. Skid-mounted condensing film separation small air volume unit is a special device designed for this kind of scene.

The unit adopts a skid-mounted structure. The compressor, condenser, membrane module, and control system are integrated on the steel base. The shape is compact. The width of the whole machine is usually no more than one meter and the depth is about half a meter. It can be placed next to a fume hood, along the side of a laboratory bench, or in a corner of the workshop, and does not require a dedicated equipment room. The unit is fully assembled and tested prior to leaving the factory; on-site, it only requires power connection and piping of the exhaust inlet and outlet. Installation time is measured in hours. The entire unit is lightweight and features casters, allowing it to be easily repositioned as needed to accommodate changes in the experimental setup.

The process employs a combined approach of compression and condensation coupled with membrane separation, consistent with the principles of industrial-grade equipment. The exhaust gas is compressed by a compressor and then fed into a multi-stage condensation unit, where staged cooling causes the solvent to liquefy and flow into a collection bottle. The condensation temperature can be adjusted on the touchscreen depending on the type of solvent used that day—set one temperature when using acetone for chromatography, and another when using dichloromethane for synthesis. After condensation, the tail gas enters the membrane module, and the membrane enriches the residual solvent molecules and then circulates them back to the condensation inlet for further treatment, and the clean air is directly discharged. The recovery rate of acetone, dichloromethane, ethyl acetate, ethanol, toluene and other common solvents can reach more than 90%.

Operating noise is kept at a low level, ensuring it does not affect the experimental environment. The equipment is driven by electricity, there is no replacement of consumables such as activated carbon, and no hazardous waste is generated. PLC fully automatic control: operates when gas is present and enters standby mode when gas is absent, eliminating the need for dedicated monitoring.

For small-volume exhaust gas applications where large-scale equipment is not suitable, skid-mounted condensation-membrane separation units represent a flexible, cost-effective, and compliant solution. LuoyangWohong PetrochemicalEquipment Co., Ltd. focuses on the field of VOCs membrane recovery, and can provide the whole process service from detection to delivery according to the specific solvent type and processing air volume matching device specifications of the laboratory or small production line. Before selection, it is recommended to test the working conditions first to clarify the solvent composition and concentration range to ensure that the equipment configuration matches the actual working conditions.