Methods for removing water from hydraulic oil

There are many ways to remove water from hydraulic oil. Common methods are as follows:

1. Vacuum dehydration method

- Principle: Use a vacuum pump to reduce the system pressure, evaporate the water at low temperature, and then separate it through a condenser.

- Equipment: Vacuum oil purifier.

- Advantages: High efficiency, suitable for large-scale water removal.

- Disadvantages: High equipment cost.

2. Centrifugal separation method

- Principle: Use centrifugal force to separate water and oil.

- Equipment: Centrifugal oil purifier.

- Advantages: Fast, suitable for oil with high water content.

- Disadvantages: Limited effect on tiny water droplets.

3. Adsorption method

- Principle: Use adsorption materials (such as silica gel, molecular sieve) to absorb water.

- Equipment: Adsorption oil purifier.

- Advantages: Simple, suitable for small amounts of water removal.

- Disadvantages: Adsorption materials need to be replaced regularly.

4. Coagulation separation method

- Principle: small water droplets are gathered into large water droplets through a coalescer, and then separated by gravity.

- Equipment: coalescing oil purifier.

- Advantages: high efficiency, suitable for emulsified oil.

- Disadvantages: complex equipment and high maintenance requirements.

5. Heating dehydration method

- Principle: heat the oil to evaporate the water, and then separate it through a condenser.

- Equipment: heating oil purifier.

- Advantages: simple, suitable for removing a small amount of water.

- Disadvantages: high temperature may affect the performance of the oil.

6. Filtration method

- Principle: use special filter materials (such as cellulose, glass fiber) to filter water.

- Equipment: filter oil purifier.

- Advantages: suitable for removing trace water.

- Disadvantages: filter materials need to be replaced regularly.

7. Chemical dehydration method

- Principle: add chemical agents (such as dehydrating agents) to react with water to form precipitation, and then filter and remove it.

- Equipment: Chemical oil purifier.

- Advantages: Suitable for specific oil products.

- Disadvantages: May affect oil performance, use with caution.

8. Natural sedimentation method

- Principle: Use gravity to make water naturally settle to the bottom and then discharge.

- Equipment: Sedimentation tank.

- Advantages: Simple and low cost.

- Disadvantages: Time-consuming and limited effect.

- Vacuum dehydration and coalescence separation methods are suitable for large-scale water removal.

- Adsorption and filtration methods are suitable for trace water removal.

- Centrifugal separation and heating dehydration methods are suitable for specific situations.

- Chemical dehydration and natural sedimentation methods are suitable for specific oil products or simple needs.

Selecting the appropriate method according to the water content and equipment conditions can effectively remove water from hydraulic oil and extend the life of the equipment.