Toluene is a commonly used organic solvent in industries such as fine chemicals, coatings, adhesives, etc. Its volatile VOCs waste gas has a high concentration and a single component, making it a typical target for the combined recovery process of condensation and membrane separation. The processing approach is as follows: after being collected in a closed manner at the emission point, most of the toluene vapor is first compressed and condensed to liquefy and recover, and reused in production. The residual low concentration tail gas is deeply purified by VOCs separation membrane components and discharged in compliance with standards. LuoyangWohong PetrochemicalEquipment Co., Ltd. can provide customized design and delivery of solvent liquefaction recovery devices for toluene working conditions.
In the workshop using toluene, the exhaust gas mainly comes from the reaction kettle breathing and pressure relief, vacuum pump exhaust, distillation of non condensable gas, cleaning and displacement exhaust, and other processes. Toluene has a high boiling point, moderate vapor pressure at room temperature, good liquefaction efficiency for condensation recovery, and stable quality of the recovered liquid, making it a solvent with outstanding economic recovery.
Each discharge point is connected to the recycling device through a closed pipeline to prevent unorganized dispersion.
Toluene vapor liquefies under pressurized and cooled conditions, and the recovered liquid is temporarily stored and tested before being reused.
Low concentration exhaust gas enters the membrane module, and toluene molecules selectively permeate through the membrane for enrichment, flowing back to the condensation unit for recycling.
Purified gas is discharged in an organized manner and testing ports are reserved.
| Solvent | Condensation liquefaction performance | Recycling liquid for reuse | Process considerations |
|---|---|---|---|
| Toluene | Good | Consistent Quality | Pay attention to regulating gas volume fluctuations |
| Ethyl acetate | Good | Moisture needs to be tested | Prevent hydrolysis from affecting quality |
| Acetone | Good | Consistent Quality | High explosion-proof requirements |
| Dichloromethane | Good | Confirmation of material compatibility is required | Material selection resistant to halogenated hydrocarbon corrosion |
Q: Can toluene recovery solution be directly reused?
Answer: After passing the inspection, it can be reused in production, and stable quality is one of the advantages of toluene condensation recovery.
Q: Does the device occupy a large area?
Answer: Adopting a lever mounted integrated layout, it occupies a compact area and can be arranged outside the workshop or at the edge of the equipment area.
Q: What should I do if the emission points in the old workshop are scattered?
Answer: First, sort out the discharge points, and then design the collection pipeline network to be connected in sections. Wohong can arrange on-site investigation support.
Luoyang Wohong Petrochemical Equipment Co., Ltd. specializes in customizing and manufacturing VOCs organic solvent liquefaction and recovery equipment.
Mr. Li 13526990215
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