How to treat trichloroethylene waste gas recovery? Differences in condensing recovery schemes and configurations for chlorine containing solvents

Trichloroethylene (TCE) is still widely used as a degreasing and cleaning solvent in the metal processing and electronics industries. Its exhaust gas is characterized by low boiling point, high density, and chlorine content. The recovery and treatment of trichloroethylene VOCs waste gas can achieve efficient liquefaction recovery in the condensation section, but material compatibility and sealing selection need to be specially considered according to the chlorine containing medium, which is the biggest difference from alcohol ketone ester solvent recovery.

The particularity of chlorine containing solvent recovery

• Material compatibility: Chlorine containing media pose a swelling risk to some sealing materials, and special verification is required for selection;
• High density: Pipeline layout and flow rate design should consider the impact of gas density on pressure drop;
• Condensation separation: Trichloroethylene is immiscible with water and can be separated by standing and layering.

Recycling process arrangement

1. Collection and pressurization: After the exhaust from the degreasing tank and cleaning line is collected, it is pressurized by an explosion-proof compressor;
2. Graded condensation: Trichloroethylene vapor is extensively liquefied and recovered under conventional condensation conditions;
3. Membrane separation bottom: residual exhaust gas is purified by VOCs separation membrane to meet emission standards;
4. Recycled liquid management: After the condensate is separated into layers and divided into water, it is collected and reused according to batches.

Differences in configuration between chlorine containing and conventional solvent recovery

Can trichloroethylene recovery solution be directly reused?

After layering and separating water, the purity is better, and most degreasing processes can be directly reused, depending on the process requirements.

How to connect multiple exhaust streams in the cleaning line?

After grouping and collecting according to the medium, the device is connected, and the selection is calculated based on the total gas volume and peak load.

LuoyangWohong PetrochemicalEquipment Co., Ltd. (Wohong Petrochemical) focuses on the design and manufacturing of VOCs organic solvent liquefaction and recovery equipment, supporting customization according to solvent types and working conditions. Welcome to inquire by phone.