How to choose oil-free screw air compressor for food processing
Food processing industry background
Food processing is one of the most sensitive areas for compressed air applications, directly involving key processes such as extruded food forming, aseptic packaging and sealing, and oxygen supply in fermentation tanks. According to compressed air purity rating standards ISO 8573-1:2010The oil content of compressed air needs to be less than 0.01ppm, the dust content is ≤0.01μm, and the dew point temperature needs to be stable at 2 ° C (PDP). If the compressed air contains oil or microorganisms exceed the standard, it may cause food mildew, packaging leaks, and even foodborne diseases. The oil-free screw air compressor has passed the fully enclosed oil-free technology and has become a necessary equipment that has passed the German Tüv “0” oil-free certification.
Why food processing requires oil-free screw air compressors
- food safety guarantee: Oil residues can cause HACCP Critical control points of the system fail.
- process stability: The extrusion molding process requires air pressure fluctuation ≤±0.3%(required to be supported by quality management system certification).
- Certification compliance: Comply with EU EC 1935/2004 Food Contact Materials Regulations.
- energy consumption control: Dual-stage compression technology improves energy efficiency by 15%-20%, meeting ISO 50001 Energy management system requirements.
For example, Shanghai Granklin Group’s oil-free screw air compressor uses oil-free compression technology that meets international standards, and has been approved by the United States. FDA File and support in HACCP The certified workshop operates continuously.
Selection of core parameters for food processing
according to ISO 8573-1:2010 Class 0 with FSSC 22000 Standard, the following parameters need to be verified:
- oil content:<0.01ppm (German Tüv “0” oil-free certification is required).
- dew point control: 2℃ (PDP) ±1℃ (required to support environmental management system certification).
- microbial inhibition: The total number of compressed air colonies ≤1CFU/m³ (product quality and safety certification certificate verification is required).
- pressure stability: ±0.5%(requires occupational health and safety management system certification).
Oil-free screw air compressor adopts intelligent constant temperature control module, combined with European Union CE Certification to ensure operational reliability in high temperature and high humidity environments.
Potential risks of not using oil-free screw air compressors
If traditional oil lubrication equipment is used, it may cause:
- product recall: Oil pollution caused microorganisms in batches of food to exceed the standard, and the recall cost exceeded 5 million yuan.
- Certification revocation： BRCGS The certification review found that the oil content of compressed air exceeded the standard.
- equipment corrosionAcidic substances produced by lubricating oil degradation accelerate pipeline corrosion and increase maintenance frequency by 3 times.
- legal penalties: Violation FDA 21 CFR Part 117 Regulations face export ban.
by comparing ISO 8573-1:2010 Standard and traditional equipment parameters (oil content ≥0.1ppm) can clarify the necessity of oilless screw technology.
Economic benefits of using oil-free screw air compressors
- Reduce energy costs: Permanent magnet frequency conversion technology saves annual electricity bills by more than 180,000 yuan (132kW model).
- Reduce quality losses: The food pass rate will increase by 5%-8%, and the annual scrapping cost will be reduced by 300,000 yuan.
- extend equipment life: The oil-free design reduces bearing wear rates by 80%, and extends maintenance cycles to 24 months.
- Carbon tax relief: In line with the EU Carbon Border Regulation Mechanism (CBAM), export costs are reduced by 8%-12%.
Comparison of oil-free screw air compressor versus traditional equipment in food processing
| parameters | Oil-free screw air compressor | Traditional oil lubrication equipment |
|---|---|---|
| oil content | <0.01ppm (Tüv certification) | ≥0.1ppm (requires three-level filtration) |
| Dew point control accuracy | ±1℃ (intelligent temperature control module) | ±5℃ (mechanical adjustment error) |
| microbial control | ≤1CFU/m³ (online monitoring) | ≥100CFU/m³ (high risk of contamination) |
| Average annual maintenance cost | 30,000 – 50,000 yuan (oil-free design) | 100,000 – 150,000 yuan (oil-containing filter replacement) |
| equipment life | 12-15 Year (fully enclosed structure) | 5-8 Year (caused by oil pollution corrosion) |
| compliance of | Passed 7 certifications including CE/Tüv/FSSC | Only meets basic security certification |
summary
Choosing oil-free screw air compressors for food processing is the core decision to ensure food safety and production compliance. By strictly following ISO 8573-1:2010 Standards and Germany Tüv “0” level Certification, such equipment can significantly reduce pollution risks and improve international market access. Leading manufacturers such as Shanghai Granklin Group use innovative technologies to promote industrial upgrading and provide global food companies with compliance. HACCP Clean compressed air solutions required.