@Air Compressor
2025-03-31
Food industry requires compressed air
The food industry has extremely strict requirements for compressed air and needs to be met at the same time.Production process requirementsandfood safety standards。The following are specific requirements and solutions:
1. Core quality requirements
| indicators | standards/requirements | impact |
|---|---|---|
| oil content | ≤0.01 mg/m³（ISO 8573-1 Class 1） | Oil contaminated food (such as packaging residues) |
| particulate matter | ≤0.1 μm（ISO 8573-1 Class 1） | Dust may contaminate products (such as baked goods) |
| dew point temperature | ≤-40℃ (pressure dew point) | Moisture causes moisture to food and the growth of microorganisms (such as dairy products) |
| microbial | Subject to HACCP plan requirements | Excessive bacterial colonies may cause food safety accidents |
| Odor/odor | Need to be processed through activated carbon filtration | Avoid odors on food (such as seafood processing) |
2. Requirements for typical application scenarios
- packaging link(Such as filling potato chips and sealing drinks):
- desired configurationoil-free compressorAvoid oil mist contaminating the inner surface of the packaging.
- Recommended installationEfficient sterilization filter(0.01 μm accuracy).
- food processing(Such as baking line, meat cutting):
- A dew point below-40℃ is required to prevent condensed water from contacting food.
- recommended to usestainless steel PipeAvoid rust.
- cleaning equipment(Such as vegetable washing machines, bottle washing):
- desired configurationhigh-pressure air nozzle, pressure ≥ 0.6 MPa.
- Need to be addedoil-water separatoranddryer。
3. Compression air treatment system configuration
- three levels of filtration：
- pre-filter: Remove large particles (above 1 μm).
- precision filtration: Intercept 0.01 μm particles.
- activated carbon adsorption: Remove oil vapor and odor.
- drying set-up：
- freeze dryer: Suitable for-20℃ dew point requirements.
- adsorption dryer: Suitable for high-requirement scenarios from-40℃ to-70℃.
- Sterilization measures：
- ultraviolet sterilizer: Install at the outlet of the air storage tank.
- Regular ozone disinfection: For systems after long-term downtime.
4. Compliance requirements
- standards meet: Need to meet ISO 8573-1, GB150 (Pressure Vessel Safety) and other specifications.
- certification requirements: Compressors and accessories must pass food grade certification (such as FDA food contact materials certification).
- Record traceability: An air quality testing ledger needs to be established to meet HACCP review requirements.
5. Selection suggestions
- compressor type：
- preferredoilless screw machineoroilless piston machine。
- Avoid using oil-lubricated models (even with filters).
- material requirements：
- Gas tanks and pipelines need to be used304/316L stainless steel。
- Seals require usefood grade siliconeorPTFE。
- intelligent monitoring：
- configuredDew point detector、oil content analyzerReal-time monitoring.
- Set alarm threshold, automatically stop and record if the alarm exceeds the standard.
summary: The compressed air system in the food industry needs to have “oil-free, sterile and water-free” as its core goals. It is recommended that a professional team carry out system design and conduct regular third-party testing (such as entrusting SGS and other institutions to verify air quality every year). For highly sensitive foods (such as infant formula), it is recommended to use a separate compressed air station and isolate it from the production area.