Vacuum Oil Purifier – Deep Dehydration, Degassing, and Filtration for Oil Regeneration

1. Product Overview

The Vacuum Oil Purifier is a professional industrial oil treatment equipment specifically designed for aging, 

emulsified, and contaminated lubricating oil, hydraulic oil, and transformer oil. Unlike ordinary filter machines

 that only remove solid particles, vacuum oil purification equipment employs low-temperature negative pressure 

physical separation technology to deeply remove:

· Emulsified water and dissolved water

· Micro-gases and entrained air

· Oxidized sludge and varnish deposits

This advanced technology effectively restores oil viscosity, insulation performance, and cleanliness—achieving true oil

 regeneration rather than simple filtration. As essential industrial supporting equipment, it helps factories:

· Significantly reduce new oil replacement costs

· Avoid equipment shutdown losses caused by unqualified oil quality

· Support sustainable manufacturing and hazardous waste reduction goals

· Extend the service life of expensive industrial oils

2. Working Principle

The vacuum oil purifier completes deep purification through a multi-stage systematic process. Each stage is precisely 

engineered to remove specific contaminants without damaging the oil's base properties.

Stage 1: Pre-Filtration

The contaminated oil first passes through a precision pre-filter that:

· Intercepts large particles, rust, and mechanical impurities

· Protects the subsequent vacuum system from abrasive damage

· Prevents solid contaminants from fouling the vacuum chamber

Stage 2: Heating & Vacuum Separation

After preliminary filtration, the oil enters the heating and vacuum separation chamber:

· A stable negative pressure environment is maintained

· The boiling point of water is significantly reduced (low-temperature separation)

· Dissolved gases and moisture are vaporized and removed

· Oil additives remain intact – no thermal degradation occurs

· Free and emulsified water are completely separated

Stage 3: Fine Filtration

After dehydration and degassing, the oil flows through fine filter elements to:

· Remove tiny suspended pollutants (sub-micron particles)

· Capture oxidation byproducts and sludge residues

· Ensure final oil cleanliness meets system requirements

Stage 4: Clean Oil Output & Separation Discharge

· The regenerated clean oil is output for cyclic use

· Separated water and gases are discharged independently

· The entire process is pure physical treatment

· No chemical pollution or secondary oil deterioration occurs

3. Core Product Advantages

3.1 Deep Removal of Emulsified Water & Dissolved Gases

Unlike ordinary filters that cannot handle emulsified water, this vacuum purifier:

· Effectively removes emulsified water and dissolved gases

· Completely solves common oil problems: emulsification, foam generation, decreased insulation performance

· Restores oil to near-original condition

3.2 Low-Temperature Purification Design

The advanced low-temperature separation technology:

· Avoids high-temperature carbonization and oil aging

· Effectively extends industrial oil service life by more than 3 times

· Preserves oil additives and base oil properties

· Prevents thermal degradation common in conventional purification methods

3.3 Continuous Operation Capability

The equipment supports:

· 24-hour continuous online purification – connect to oil storage tanks and circulating pipelines

· Offline oil regeneration – process oil in separate batches

· Automatic operation – minimal operator intervention required

3.4 Intelligent Monitoring System

The built-in intelligent control system:

· Tracks oil temperature, vacuum degree, and pollution status in real time

· Enables unattended operation

· Reduces manual maintenance workload

· Provides alarm notifications for abnormal conditions

3.5 Robust Industrial Design

· Compact structure for space-saving installation

· Stable operation with low vibration

· Low energy consumption suitable for long-term heavy-duty use

· Durable construction for demanding industrial environments

4. Technical Specifications

Parameter Specification

Application Hydraulic oil, turbine oil, transformer oil, lubricating oil

Dehydration method Low-temperature vacuum negative pressure separation

Gas removal Complete degassing (dissolved air and gases)

Particle removal Multi-stage pre-filtration + fine filtration

Oil additive protection Preserved – no thermal or chemical damage

Service life extension ≥3× compared to untreated oil

Operation mode 24/7 online or offline batch processing

Monitoring system Temperature, vacuum, contamination real-time tracking

Customization Flow rates, explosion-proof, automatic control, mobile/fixed

Optional features Differential pressure alarm, oil quality online detection, remote monitoring

5. Application Scope

5.1 Power Industry

· Transformer oil – purification and insulation maintenance

· Turbine oil – ensuring safe operation of power generation equipment

· EH control oil – maintaining fire-resistant fluid quality

5.2 Heavy Industry & Manufacturing

· Hydraulic oil – long-term circulating purification to eliminate sludge

· Lubricating oil – removing emulsification and oxidation products

· Gear oil – restoring viscosity and anti-wear properties

5.3 Special Applications

· Emergency oil treatment for unexpected contamination events

· Regular scheduled oil maintenance programs

· Waste oil regeneration projects for sustainable manufacturing

· Engineering machinery and mobile equipment oil conditioning

5.4 Other Industries

· Metallurgical plants – rolling oil and hydraulic system purification

· Chemical processing – compressor and pump lubrication maintenance

· Marine – shipboard lubricating and hydraulic oil conditioning

6. Customization Options

We provide tailored vacuum oil purifier solutions based on your specific requirements:

Customization Parameter Options

Flow rate Multiple sizes available

Explosion-proof grade Standard or EX-rated for hazardous areas

Control mode Manual, semi-automatic, fully automatic (PLC)

Installation type Fixed, mobile, or skid-mounted

Power supply Standard or customized voltage/frequency

Monitoring capability Differential pressure alarm, online oil quality detection, remote monitoring

Matching filter elements Available in bulk for long-term after-sales maintenance

7. Operation & Maintenance Guidelines

1. Pre-Use Inspection – Check inlet/outlet connections, seals, and power supply before startup.

2. Temperature Monitoring – Monitor heating temperature to ensure it stays within the optimal range for your oil type. 

Avoid overheating.

3. Vacuum Level Check – Verify vacuum pump performance and system vacuum stability. Replace vacuum pump oil regularly.

4. Pre-Filter Maintenance – Clean or replace pre-filter elements as indicated by differential pressure to protect the vacuum

 system.

5. Fine Filter Replacement – Replace fine filter elements when differential pressure reaches recommended thresholds.

6. Oil Sampling – Periodically test outlet oil quality to verify purification effectiveness and optimize operating parameters.

7. Condensate Drainage – Ensure automatic or manual drainage of separated water is performed regularly.

8. FAQ (Frequently Asked Questions)

Q1: What types of oil can a vacuum oil purifier handle?

A: It is suitable for transformer oil, turbine oil, hydraulic oil, lubricating oil, gear oil, and other industrial oils. Most industrial

 circulating oil systems are compatible.

Q2: Can vacuum purifiers completely solve oil emulsification?

A: Yes. Vacuum negative pressure separation technology effectively removes emulsified water and dissolved water, 

thoroughly resolving oil emulsification, foam generation, and turbidity problems.

Q3: Will long-term use of the purifier affect oil performance?

A: No. The entire process uses low-temperature physical purification, which does not damage oil additives or change oil 

viscosity, insulation performance, or anti-wear properties. Oil is restored to near-original condition.

Q4: How much can the purifier extend oil service life?

A: Under normal operating conditions with regular purification, oil service life can be extended by 3 times or more compared 

to untreated oil. This represents significant cost savings on new oil purchases.

Q5: What is the difference between this vacuum purifier and ordinary filter machines?

A: Ordinary filter machines only remove solid particles. Vacuum purifiers remove emulsified water, dissolved water, gases, 

and oxidation byproducts—achieving true oil regeneration rather than simple filtration.

Q6: Can the equipment run continuously 24 hours a day?

A: Yes. The equipment is designed for continuous operation. It supports online purification—connecting to oil storage tanks

 and circulating pipelines for automatic, unattended operation.

Q7: Does the purifier require chemical additives or other consumables?

A: No. The purification process is purely physical. No chemical additives, adsorption materials, or consumables are 

required—only periodic filter element replacement.

Q8: Can the vacuum purifier handle fire-resistant hydraulic fluids?

A: Yes, with proper configuration. Please consult our technical team for specific fluid compatibility and recommended 

operating parameters.

Q9: What is the typical vacuum level achieved during operation?

A: The system maintains a stable vacuum level typically between -0.08 to -0.095 MPa, enabling low-temperature water 

and gas separation without oil degradation.

Q10: How do I know when the filter elements need replacement?

A: Monitor the differential pressure indicators. Replace elements when pressure reaches the recommended change-out value. 

Most units are equipped with automatic alarm functions for timely notification.

Q11: Are explosion-proof versions available?

A: Yes. We offer explosion-proof configurations (EX-rated motors and electrical components) for petroleum, chemical, 

and other hazardous area applications.

Q12: What flow rates are available?

A: Standard configurations range from 10 L/min to 200+ L/min. Custom flow rates are available upon request based on your 

processing volume requirements.

Q13: Does the equipment require specialized installation?

A: No. The purifier is designed for straightforward installation. Electrical connection, inlet/outlet piping, and exhaust venting

 are the primary installation requirements. Our team provides installation guidance and commissioning support.

Q14: What documentation is provided with each unit?

A: Each unit is supplied with an operation manual, certificate of conformity, factory test report, dimensional drawing, parts list, 

and recommended maintenance schedule. Custom certifications are available upon request