Main Functions of a Pressure Oil Purifier

A pressure oil purifier removes impurities, moisture, gases, and other contaminants from oil through pressurized filtration. It is widely used in the power, machinery, chemical, and metallurgical industries, primarily for purifying lubricants industry, insulating oils (transformer oils), hydraulic oils, and turbine oils.

Core Functions

1. Efficient Impurity Filtration

- Utilizes high-precision filter elements (such as stainless steel mesh, filter paper, and polymer materials) to remove solid impurities such as particulate matter, metal shavings, and dust from the oil.

- Filtration accuracy can reach 1-5μm (micrometers) or even higher, ensuring oil cleanliness that meets standards such as ISO 4406 and NAS 1638.

2. Dehydration (Emulsion Decomposition)

- Utilizing technologies such as vacuum dehydration, coalescence separation, and pressure filtration, it removes free and dissolved water from the oil, preventing emulsification and deterioration.

- Suitable for oils susceptible to moisture, such as transformer oil and turbine oil.

3. Degassing (Removing Air and Bubbles)

- Removes dissolved gases (such as air and hydrogen) from oil through vacuum extraction or pressure circulation, preventing oil oxidation and equipment cavitation.

- Particularly suitable for gas-sensitive applications such as hydraulic systems and turbine oils.

4. Oil Regeneration (Extending Oil Life)

- Removes acids, colloids, and oxides from oil, restoring its insulation, lubricity, and antioxidant properties.

- Suitable for regenerating old transformer oil, gear oil, and hydraulic oil.

5. Online Operation (Non-Stop Filtration)

- Can be connected to the equipment's lubrication system for online circulation filtration without affecting normal equipment operation.

- Suitable for industrial applications requiring continuous operation, such as power plants, steel mills, and chemical plants.

Pressure vs. Vacuum Oil Purifiers

|    Comparison Items   |                              Pressure Oil Purifier                                      |                                       Vacuum Oil Purifier                                      |

|-------------------------|--------------------------------------------------------------------|--------------------------------------------------------------------------|

| Working Principle       | Pressurized Forced Filtration                                                     | Vacuum Heating to Evaporate Water                                                |

| Dehydration Capacity | Suitable for free water and small amounts of dissolved water | Suitable for deep dehydration (trace moisture)                                |

| Filtration Fineness       | 1-5μm (can be higher)                                                              | Typically 5-10μm                                                                                |

| Applicable Oils            | Lubricating oil, hydraulic oil, transformer oil                            | Transformer oil, turbine oil, and other oils that easily absorb water |

| Operation Mode         | Can be operated online                                                             | Requires shutdown for processing                                                    |

Summary

Pressure oil purifiers are primarily used for:

1、Efficient filtration of solid impurities (metal particles, dust)

2、Removal of free water (preventing oil emulsification)

3、Degassing (reducing oxidation and air bubble effects)

4、Extending oil life (reducing oil change costs)

5、Online Purification (Suitable for Continuously Operating Equipment)

Suitable for purifying a variety of industrial oils, including transformer oil, hydraulic oil, lubricating oil, and turbine oil.