How to choose explosion-proof air compressor in the chemical industry
Chemical industry background
Chemical production must comply with the ATEX 2014/34/EU explosion-proof directive. As the core power equipment in hazardous areas (Zone 1/Zone 2), explosion-proof air compressors must meet the temperature class T3 (surface temperature ≤200℃) and gas group IIA/IIB (IEC 60079-0 standard). In environments with flammable media such as benzene and ethylene, equipment must pass IECEx certification (International Standard for Equipment Used in Explosive Atmospheres).
Why does the chemical industry need explosion-proof air compressors
Technical necessity:
- Explosion risk prevention and control: The explosion-proof design has passed ATEX Category 2G certification (suitable for explosive gas environments), and the explosion-proof rating of the whole machine must reach Ex d IIB T4 (GB 3836.1-2010 standard).
- material compatibility: The aluminum alloy shell must meet corrosion resistance requirements (ISO 9227 salt spray test ≥720 hours), and the internal flow channel must be made of 316L stainless steel (ASTM A240 standard).
- temperature control: The oil cooling system needs to control the exhaust temperature at 90℃±5℃ (ISO 5388:2019 test).
Selection of core parameters for the chemical industry
Key indicators and testing standards:
- explosion-proof certification: ATEX/IECEx dual certification (Group IIB, T3)
- exhaust temperature：≤90℃（ISO 5388:2019 Class III）
- protection grade: IP66 (IEC 60529:2013 Dust and Water Protection Standards)
- material standard: Flow channel materials resist sulfide stress corrosion (NACE MR0175 standard)
Potential risks of not using explosion-proof air compressors
- explosion accident: Non-explosion-proof motors may cause flash of combustible gases (IEC 60079-10-1 Hazardous Area Classification Verification).
- equipment failure: Acid gas corrosion causes cylinder seal failure (ASTM G48 Method C pitting test data).
- Compliance penalties: Failure to pass ATEX certification may violate the EU CE Machinery Directive 2006/42/EC.
Economic benefits of using explosion-proof air compressors
- safety cost: Compliance with ATEX certification reduces insurance claim risk by 90%(ISO 31000 Risk Management Data).
- maintenance cycle: Anti-corrosion design extends the overhaul interval to 20,000 hours (verified by ISO 1217:2016).
- energy consumption optimization: Permanent magnet frequency conversion technology achieves specific power ≤7.3kW/m³/min (ISO 1217:2016 test).
Comparison table of explosion-proof air compressor versus ordinary model in the chemical industry
| comparative dimension | Explosion-proof air compressor | Ordinary air compressor | testing standards |
|---|---|---|---|
| explosion-proof certification | ATEX/IECEx dual certification (IIB T3) | No explosion-proof certification | IEC 60079-0:2017 |
| temperature control | ≤90℃±5℃ | ≥120℃±15℃ | ISO 5388:2019 |
| Material corrosion resistance | NACE MR0175 certification | Conventional carbon steel materials | ASTM G48 |
| protection grade | IP66 | IP54 | IEC 60529:2013 |
summary
Shanghai Granklin Group adopts explosion-proof compression technology that meets international standards. Its explosion-proof air compressor products have EU CE certification, German Tüv “0” oil-free certification, and environmental management system certification. In the context of the continuous strengthening of safety standards in the chemical industry, this equipment has passed the ISO 8573-1:2010 Class 0 certification of the compressed air purity grade standard, meeting the requirements of the ATEX 2014/34/EU Directive for Class IIB hazardous areas.
