Analysis of Key Points of Explosion-proof Design and Safety Configuration of VOCs Solvent Recovery Device

The medium processed by the VOCs organic solvent liquefaction recovery device is mostly flammable and explosive steam, and the explosion-proof design and safety configuration directly determine whether the device can operate stably for a long time. In this paper, from the four aspects of electrical explosion-proof, pressure protection, anti-static and monitoring interlock, the key points of safety configuration of condensation and membrane separation and recovery device are combed for the reference of selection and use units.

Electrical explosion-proof configuration

• The motors, instruments and lighting in the unit shall be selected according to the classification of explosion hazard areas on site;
• The control cabinet is arranged independently or adopts positive pressure/flameproof type;
• The cable shall be laid through the pipe, and the interface shall be sealed and isolated.

Pressure and temperature protection

1. The compression unit is provided with inlet and outlet pressure monitoring and overpressure relief;
2. The buffer tank is equipped with safety valve and emergency vent pipeline, and the vent is connected to the tail gas treatment system;
3. The condensing unit is interlocked according to the set temperature of the cooling medium to prevent supercooling and freezing from blocking the flow passage;
4. Key parameters are introduced into the control cabinet for centralized display and alarm.

Anti-static and grounding

Solvent vapor is easy to accumulate static electricity in high-speed flow in the pipeline. The pipeline, tank and skid-mounted base of the device shall be equipotential connected and reliably grounded. The flange shall be bridged completely. The grounding resistance shall be detected and recorded before commissioning.

monitoring and interlocking

Do you provide explosion-proof related information when the unit is delivered?

The attached data includes the list of electrical configuration and installation requirements, which can be checked and used by users in combination with the requirements of explosion-proof zones on site.

Can old installations be supplemented with safety interlocks?

Sure. Through the installation of monitoring instruments and control transformation, the basic alarm and interlocking functions can be realized.

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.