Requirements of Rice Production Line for Oil Content in Air

The rice processing line has very strict requirements on the oil content of the air, which usually needs to be controlled 0.01 mg/m & sup3; below to meet food-grade cleanliness standards. This requirement stems mainly from the following core factors:

core Standard for Oil Content Control of 1. Air

1. food grade cleanliness requirements
   rice processing belongs to the category of food production, compressed air needs to meet ISO 8573-1 Class 0 standard (oil content ≤ 0.01 mg/m & sup3;) to prevent oil from contaminating the surface of rice grains or the inside of processing equipment and ensure that the product complies with food safety regulations.

2. Process accuracy requirements
   in precision processes such as color selection and polishing, compressed air directly contacts the surface of rice grains. If the oil content exceeds the standard, the oil film will adhere to the rice grains, resulting in:

   • gloss Decreased: Affect the appearance quality of rice and reduce market competitiveness;
   • equipment failure: Oil deposits in the pipeline may block pneumatic components (such as solenoid valves, nozzles) and increase maintenance costs.

Technical Adaptability of 2. Oil-free Water Lubrication Air Compressor

1. zero oil pollution characteristics
   no oil and water lubrication air compressor through pure water film lubrication technology replace traditional lubricating oil, eliminate the risk of oil entering the gas path from the root, and ensure the oil content of compressed air towards zero fully meet the requirements of clean rice processing.

2. Efficient purification and stability

   • multistage filtration system: Supporting freeze dryer (dew point ≤-40 ℃) and precision filter (0.01μm grade), which can remove 99.99% of particulate matter and moisture in the air and prevent microbial growth;
   • intelligent pressure control constant pressure gas supply (error ≤ ± 0.02 MPa) is realized through frequency conversion adjustment to ensure the stable operation of color sorter, packaging machine and other equipment.

3. Energy saving and environmental protection advantages

   • energy consumption reduction: The heat dissipation efficiency of water film lubrication is more than 2 times that of traditional lubricating oil, the temperature rise of the equipment is low, and the specific power is optimized by about 8%;
   • zero pollution of waste water: The discharged water does not need to be treated, which meets environmental protection requirements and reduces corporate compliance costs.

3. Application Scenarios and Benefit Analysis

1. key Process Support
   • color selection process oil-free compressed air-driven nozzle can accurately remove different color particles and avoid oil interference with optical sensor;
   • packing process clean air source for rice bag inflatable seal, prevent oil pollution packaging materials, extend the shelf life.
2. Long-term cost optimization
   • reduced maintenance costs: Oil-free lubrication system reduces the replacement cycle of oil filter element (traditional models need to be replaced every 2000 hours, oil-free models can be extended);
   • product pass rate improvement: The rate of rice rework caused by oil pollution has dropped from 5% to less than 0.5, and the annual cost savings exceed one million yuan (take medium-sized processing plants as an example).

4. industry compliance recommendations

1. regular testing and certification
   it is recommended that a third-party agency be commissioned to test the oil content of compressed air on a quarterly basis and keep records for regulatory review to ensure compliance. GB 16297-1996 Integrated Emission Standard of Air Pollutants requirements of the food processing industry.

2. system integration optimization
   in the production line design stage, the oil-free water lubrication air compressor is linked with the dust removal system and the pneumatic conveying device, and the air pressure and flow are adjusted in real time through the Internet of Things monitoring platform to maximize energy utilization.