Standards for compressed air use by food companies

Analysis of standards for compressed air use by food companies
The food industry has extremely strict quality requirements for compressed air, and cleanliness and safety need to be ensured throughout the entire process from source to application. The following are the core standards and adaptation solutions for Granklin air compressors:

1. Core standard requirements

1. No oil pollution
   • Direct contact scene(Such as food drying, conveying, packaging and filling): The compressed air must be completely free of oil (oil residue ≤0.01mg/m³) to avoid contaminating food or packaging materials.
   • Indirect contact scenarios(such as workshop environmental control): Oil residues must be ≤0.1mg/m³ to prevent oil from spreading through the air and affecting food.
   • Granklin’s scheme: Adopt water-lubricated single screw technology without lubricating oil, eliminate oil pollution from the source, and naturally meet the highest oil-free requirements.
2. High purity and cleanliness
   • Particulate matter control: Direct contact with dry foods (such as milk powder, grains) requires ≤0.1μm of particulate matter ≤2000 pieces/m³ (ISO 8573-1 Class 1); non-dry foods (such as beverages, meat) requires ≤10000 pieces/m³ (Class 2).
   • microbial control: It needs to be filtered through a high-efficiency filter (0.01μm level) and activated carbon to remove dust, microorganisms and odors.
   • Granklin’s scheme: Precision filters and HEPA filter modules can be integrated to ensure that air purity meets food grade requirements.
3. Drying and stabilization
   • moisture control: Direct contact with dry food requires a pressure dew point of ≤-40℃ (adsorption dryer), and non-dry food requires a pressure dew point of ≤-20℃ (freezing dryer) to prevent condensation water pollution.
   • pressure stability: Gas supply pressure fluctuations need to be controlled within ±0.1MPa to ensure efficient operation of the production line.
   • Granklin’s scheme: Support adsorption dryer to provide stable drying air; precise cooperation between single screw and star wheel plate ensures constant pressure.

2. Compliance and monitoring requirements

1. compliance
   • It is necessary to comply with ISO 22000 (Food Safety Management System), HACCP (Hazard Analysis and Critical Control Points) and other standards, and incorporate compressed air systems into critical control points.
   • Granklin air compressors can provide oil-free compressed air, simplifying the process for companies to pass international certifications such as FDA and EFSA.
2. Regular testing and maintenance
   • detection frequency: Oil content, moisture, and particulate matter are tested every week; microbial testing every month; comprehensive and systematic evaluation every year.
   • maintenance records: Records of filter element replacement, desiccant regeneration, etc. need to be kept for at least 2 years for easy traceability.
   • Granklin’s scheme: Equipment operation data can be monitored in real time and combined with an intelligent early warning system to reduce maintenance costs and downtime risks.
3. system design specification
   • material selection: Pipelines need to be made of 316L stainless steel or food grade plastic to avoid the precipitation of harmful substances.
   • pipe layout: Avoid dead corners and stagnant water points, with a slope of ≥1:100 to prevent the growth of microorganisms.
   • Granklin’s scheme: Provide customized pipeline design services to ensure that the system meets food-grade hygiene requirements.

3. Adapting advantages of Granklin air compressor

1. Oil-free technical support: Water-lubricated single screw design eliminates the need for lubricating oil, completely solving the risk of oil pollution.
2. Stable and efficient gas supply: The precision-manufactured screw cooperates with the star wheel to adapt to high-load operation and has small pressure fluctuations to ensure the continuity of the production line.
3. Post-processing integration: Can be combined with high-efficiency filters, adsorption dryers and sterilization modules to directly output clean compressed air that meets the highest standards in the food industry.
4. compliance support: Help companies pass ISO 22000, HACCP and other certifications to reduce legal risks and the possibility of product recalls.

conclusion
The use of compressed air by food companies must strictly follow the standards of oil-free, high purity, dryness and stability, and ensure food safety through compliance monitoring and system design. Granklin water-lubricated single-screw air compressor takes oil-free technology as its core and combines efficient post-treatment equipment to provide reliable and clean compressed air solutions for the food industry, helping enterprises achieve production safety and quality control goals.