Rice Mills

Uses of Compressed Air

In the rice mills, the milled whole kernel rice is passed through an color sorter to remove defects. Color sorters use camera-based systems to view the rice grains at varying wavelengths (colors). The appearance of a defective grain initializes a reject system, usually an ejector that uses a short blast of compressed air to blow the offending grain out of the stream of rice. This removes damaged kernels (with black specks), yellow kernels and stones.

Moisture Problems

Rice IndustryMoisture (Condensation or water vapour) in Compressed air stream leads to:

  • Increased downtime and maintenance costs of Pneumatic controls.
  • Rust and scale formation within pipelines.
  • Sluggish and inconsistent operation of air valves and cylinders.
  • Freezing in exposed lines during cold weather.
  • Malfunctioning of color sorting machines due to moisture laden compressed air results in poor quality of the rice.
  • Ejector failure which is a high recurring cost.

Dry, quality compressed air is an absolute must for Rice Mills

The Delair Solution

The only positive means of moisture removal from the compressed air stream is the installation of an air dryer. Water vapour can economically be removed by two methods; one is cooling the air and the other method is by adsorption.

Delair offers a wide range of both refrigeration dryers and adsorption dryers for all your needs.

For general plant and instrumentation air where requirement is between 3°C PDP to 6°C PDP, delair refrigeration dryers, – FDI Series, does the job.

If the application requires extra dry air and PDP below 2°C then delair has a large range of adsorption Dryers – DC Series and engineered systems.


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