Dewaxing Section

Continuous Dewaxing Plant:

Dewaxing process in vegetable oils refining plant :

A continuous dewaxing plant is used in the refining of vegetable oils, particularly in the production of oils like sunflower oil, corn oil, and soybean oil. The dewaxing process removes waxes, which are naturally occurring esters of long-chain fatty acids and long-chain alcohols, from the oil. These waxes can cause cloudiness or haze in the oil at low temperatures, affecting its appearance and potentially its functionality.

Here's how a shft continuous dewaxing plant typically works:

1. Crystallization :

The oil is cooled to a specific temperature, causing the waxes to crystallize and separate from the oil. This crystallization process is usually achieved through gradual cooling in a series of crystallizers.

2. Separation :

The mixture of oil and wax crystals is then passed through a filtration or separation system to separate the solid wax crystals from the liquid oil. This step may involve filtration, centrifugation, or a combination of both.

3. Washing :

The separated wax cake may undergo a washing process to remove any remaining oil or impurities. This helps improve the purity of the recovered waxes.

4. Drying :

The washed wax cake is then dried to remove any residual moisture, resulting in dry, purified waxes ready for further processing or packaging.

5. Recovery of Oil :

The dewaxed oil, which is now free of waxes, is collected and can be further processed in the refining plant or sent for packaging.

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Advantages of continuous dewaxing plant :

Continuous dewaxing plants offer several advantages in the refining process of oils, particularly for edible oils like soybean, sunflower, and palm oil:

• 1. Efficiency :
  Continuous dewaxing plants are designed for uninterrupted operation, maximizing efficiency and throughput compared to batch processes.
• 2. Consistency :
  They provide consistent quality of the final product due to precise control over parameters such as temperature, pressure, and residence time.
• 3. Cost-effectiveness :
  Continuous operations often result in lower operating costs due to reduced downtime, labor, and energy consumption compared to batch processing.
• 4. Higher yield :
  Continuous dewaxing can often achieve higher yields by optimizing process parameters and minimizing losses during the refining process.
• 5. Improved product quality :
  Continuous processes allow for better control over crystallization and separation, resulting in a higher quality final product with desirable characteristics such as clarity, color, and texture.
• 6. Flexibility:
  These plants can be easily integrated into existing refining processes and can handle a variety of oil feedstocks, providing flexibility to manufacturers.
• 7. Reduced footprint :
  Continuous dewaxing plants typically have a smaller footprint compared to batch systems, saving space in the production facility.
• 8. Automation :
  Continuous plants can be highly automated, reducing the need for manual intervention and ensuring consistent operation and product quality.

Overall, SHFT continuous dewaxing plants offer improved efficiency, consistency, and product quality while reducing costs and footprint, making them a preferred choice for many oil refining operations.