Why Power Plants Choose Vacuum Oil Purifiers Instead of Filter Carts?

The power plant relies on clean and reliable lubricating oil to ensure the stable operation of turbines, transformers and other critical equipment. When the lubricating oil is contaminated, the oil filter vehicle is usually the first choice for treatment.

However, the oil filter vehicle is mainly used to remove particulates and has limited ability to remove moisture, humidity and dissolved gases.

In contrast, the vacuum oil purifier combines filtration, dehydration and degassing functions, and can handle pollutants more comprehensively, providing a more complete lubricating oil purification solution for the power plant.

Filter Cart vs. Vacuum Oil Purifier: What’s the Difference?

The basic difference is simple:

A filter cart mainly filters. A vacuum oil purifier filters, dehydrates, and degasses.

Feature	Filter Cart	Vacuum Oil Purifier
Particle removal	✓	✓
Fine filtration	✓	✓
Free water removal	Limited	✓
Dissolved water removal	✕	✓
Dehydration	✕	✓
Air & dissolved gas removal	✕	✓
Multi-stage purification	Limited	✓

When the main pollutants are solid particles, an oil filtering cart is a practical choice. It has a simple structure and is easy to move, making it suitable for daily oil filtration.

However, the oil pollution in power plants is usually not just particle matter. Steam turbine oil and transformer oil may also contain moisture, emulsified water, air, dissolved gases, and oil sludge, among other pollutants.

The vacuum oil purifier can complete filtration, dehydration, and degassing in one process, removing these pollutants more comprehensively.

Why Filtration Alone Is Not Enough for Power Plants

For many power plants, moisture is more difficult to handle than visible particulate matter. Moisture can enter the oil through condensation, steam contamination, maintenance operations, storage, or humid environments, and exist in the form of free water, emulsified water, or dissolved water.

Traditional filter elements are mainly used to capture solid particles and are unable to effectively remove dissolved water from the oil.

Vacuum oil purifiers utilize vacuum to lower the boiling point of water, making it easier to separate the moisture from the oil. Therefore, they are particularly suitable for turbine oil and other industrial lubricants that are prone to moisture contamination.

Air and dissolved gases are also pollutants that need to be concerned about. For applications such as transformer oil, they may affect the performance of the oil, and vacuum treatment can remove them during the purification process.

During actual operation, oil contamination is usually caused by multiple factors simultaneously, such as:

Particulate matter + Moisture + Air + Sludge

Replacing filter elements can remove particulate matter, but moisture and dissolved gases may still be present. This is precisely the advantage of vacuum oil purification technology: one treatment can handle multiple pollutants.

5 Reasons Power Plants Choose Vacuum Oil Purifiers

Here are reasons why power plants tend to choose vacuum oil purifiers.

1. More efficient water removal capability

One of the main advantages of the vacuum oil purifier is its efficient water removal ability.

By heating and vacuum separation, this system can remove water that is difficult to handle through traditional filtration methods.

For turbine oil, effective dehydration helps maintain the quality of the oil and reduces maintenance problems caused by moisture.

2. Stronger degassing capability

The vacuum purification not only removes water but also removes air and dissolved gases from the oil. Therefore, vacuum treatment is particularly suitable for transformer oil and other applications that require controlling gas pollution.

This system not only removes particles but can also handle multiple pollutants simultaneously in one purification process.

3. Multi-stage Oil Purification

Modern vacuum oil purifiers usually employ multi-stage processing, such as:

Heating → Vacuum Dehydration → De-gassing → Fine Filtration

This multi-stage processing can simultaneously handle different types of contaminants.

For power plants, the processing capacity of a vacuum purification system is far beyond the basic particle filtration.

4. Suitable for Large Capacity Oil Processing

Power plants often need to handle large amounts of turbine oil, transformer oil, and other industrial fluids, so processing capacity is very important.

Vacuum oil purifiers offer different flow rates and configurations, allowing for the selection of appropriate equipment based on the oil volume, contamination level, maintenance requirements, and operating conditions.

If one device needs to serve multiple devices, mobile systems are also more flexible.

5. Reducing Unnecessary Oil Changes

The replacement cost of a large amount of industrial oil is high, including the cost of new oil, as well as waste oil disposal, transportation, disposal, labor, and maintenance costs.

Regular purification helps maintain the quality of the oil and reduces premature oil changes due to contamination.

The goal is not only to make the oil cleaner, but also to maintain its performance and help power plants maintain stable operation.

When Should You Choose a Vacuum Oil Purifier?

In many cases, oil filtering vehicles remain a suitable option.

The following situations are suitable for using oil filtering charts:

• The main pollutant is solid particles
• The oil is relatively clean and dry
• Only daily filtration is required
• Portability and basic filtration are the main requirements

The following situations are more suitable for using vacuum oil purifiers:

• Water pollution occurs frequently
• The oil contains dissolved water or emulsified water
• Air or dissolved gases need to be removed
• Simple filtration alone cannot meet the requirements
• Deeper oil purification is needed
• Large quantities of oil need to be processed regularly

The final choice depends on the condition of the oil and the pollutants to be removed.

If the oil contamination is not limited to particles, vacuum oil purifiers usually provide a more comprehensive treatment solution.

Final

The oil filter vehicle is widely used and easy to operate, especially suitable for removing solid particles. However, pollutants in power plant oils often include more than just particulate matter.

When moisture, humidity, air, dissolved gases, etc. also become problems, vacuum oil purification can provide a more comprehensive treatment solution.

For turbine oil, transformer oil and other power generation applications, an appropriate purification system should be selected based on the type of oil, degree of pollution, required flow rate and operating conditions.

Chinon Filtration provides vacuum oil purification solutions for the power industry, suitable for the treatment of oil products such as turbine oil and transformer oil.

Need help choosing the right oil purifier? Please contact us and provide the type of oil, degree of pollution and required flow rate.