REXON SF6 Gas Recovery, SF6 Gas Purification, Compact Gas Management Unit for Transformer Maintenance 300L/h
High-purity SF6 recovery for transformers & GIS
Compact design with low-temperature stability
Eco-friendly recycling and cost-saving operation
Introduction:
The REXON SF6 Gas Recycling System is a specialized unit designed to handle sulfur hexafluoride (SF6) gas efficiently and safely. It integrates recovery, purification, drying, liquid storage, and refilling functions into a single compact system. SF6 gas is widely used in gas-insulated switchgear (GIS), high-voltage circuit breakers, and substations due to its superior insulation strength and arc-extinguishing performance. However, SF6 gas is costly, and under arc or corona discharge conditions, it decomposes into toxic by-products. Without proper recycling and purification, this not only leads to financial losses but also poses risks to the environment and human health.
The REXON system ensures recovered gas is purified, dried, liquefied, and stored in safe containers. When required, the gas can be re-evaporated and refilled into electrical equipment, ensuring quality stability and maximizing resource utilization.
Application:
The system is widely applicable to SF6 gas management during the production, inspection, installation, and maintenance of electrical equipment, including:
1. Gas-Insulated Switchgear (GIS)
2. High-voltage Circuit Breakers
3. Transformers and Power Substations
4. Other SF6-filled electrical systems
By using this system, companies can recover residual SF6 gas, remove harmful by-products and impurities, and safely store it in liquid form for later reuse, achieving both economic savings and environmental benefits.
Features:
1. Efficient Gas Recovery - Recovers SF6 gas from electrical equipment and safely stores it in liquid form, reducing gas losses.
2. Advanced Purification System - Multi-stage filters and adsorption units remove moisture, acidic by-products, solid particles, and oil traces.
3. Liquid Storage Design - Converts SF6 into liquid for compact storage, safe transportation, and long-term management.
4. Compact & Mobile - Lightweight, space-saving, and equipped with heavy-duty casters for easy movement on-site.
5. Low-Temperature Reliability - Built-in temperature control and protection system ensures stable performance even at -20°C.
6. Smart Maintenance - Integrated heating system regenerates desiccants automatically, minimizing replacement frequency.
7. Safe & Reliable - Uses high-quality branded electrical components and phase sequence protection for secure operation.
8. Eco-Friendly - Enables closed-loop recycling of SF6 gas, reduces greenhouse gas emissions, and complies with environmental regulations.



1.Performance Data of the Device
| Type |
Liquefied Refrigeration, Air Cooled, Mobile Type |
| Ambient Temperature |
-10ºC~40ºC |
| Reclaiming |
Initial Pressure(MPa) |
0.8 |
| Final Pressure(MPa) |
≤0.053 |
| Time Required for 1m3(h/m3) |
≤0.4 |
| Refilling |
Initial Pressure(Pa) |
≤133 |
| Final Pressure(MPa) |
0.7 |
| Time Required for 1m3(h/m3) |
≤0.2 |
| Evacuating Times from 0.1MPa~113Pa(h/m3) |
≤0.25 |
| Limited Degree of Vacuum(Pa) |
≤10 |
| Vacuum Preservation (Pa/24 hours) |
≤400 |
| Annual Leakage Rate |
≤ 0.5% |
Purity of Reclaimed SF6 Gas |
Water content(PPM/V) |
≤40 |
| Oil(PPM/W) |
≤10 |
Storage Tank |
Mode of Storage |
Liquid State |
| Pressure(MPa) |
3.9 |
| Volume(L) |
300 |
| Stored Liquied Quantity(kg) |
300 |
| Mode of Liquefaction |
Refrigeration Liquefaction |
| Mode of Vaporization |
Electric Heating |
| Type of Dry-type filter Regeneration |
Vacuum-Heating |
| Power Supply |
380V, 50Hz |
| Overall Power Consumption(kW) |
≤12 |
| Sound Level dB(A) |
≤75 |
| Outside Dimension(mm) |
1970×1100×1630 |
| Weight of the Device(kg) |
≤1000 |
2.Performance Data of Main the Components
| SF6 Compressor |
Type |
|
Lub. Piston,Semi-hermetic |
| Theoretical Displacement |
m3/h |
22 |
| Max. Discharge Pressure |
MPa |
2.50 |
| Allowable Discharge Pressure |
MPa |
1.96 |
| Min. Allowable Suction pressure |
kPa |
53 |
| Max. Allowable Suction pressure |
MPa |
0.30 |
| Max. Discharge Temp. |
ºC |
130 |
| Lub. Oil |
|
46# Refri. Oil |
| Power Consumption |
kW |
3.0 |
| Power Source |
|
3Φ 380V 50 Hz |
| Vacuum Pump |
Pumping Speed |
m3/h |
90 |
| Ultimate Vacuum |
Pa |
≤5×10-1 |
| Lub. Oil |
|
PRO-100 Vacuum pump Oil |
| Power Consumption |
kW |
3.7 |
| Power Source |
|
3Φ 380V 50 Hz |
| Refrigeration Unit |
Nominal Refrigerating Capacity |
kcal/h |
4600 |
| Refrigerant |
|
R22 |
| Max. Capacity of Refrigerant |
kg |
25 |
| Lub. Oil |
|
46# Refri. Oil |
| Power Consumption |
kW |
2.32 |
| Power Source |
|
3Φ 380V 50 Hz |
| Tank |
Classification |
|
II |
| Designed Pressure |
MPa |
3.9 |
| Designed Temperature |
ºC |
50 |
| Volume |
L |
300 |
| Stored Liquied Quantity |
kg |
300 |
| liquefy Volume |
L |
40 |
| liquefy Liquied Quantity |
kg |
40 |
* Refrigeration condition: Evaporation temperature - 10ºC; Condensation temperature 40ºC
The Main Components and Functions of The Device
The main functions of the device include compressor, vacuum pump, refrigeration system, dry filter regenerator, heater, purifier, filter, pipeline, valve, instrument, electrical control and structural parts, frame panel, running wheel and storage tank.
SF6 Multi-functional Tester

Transformer Oil Filter Machine
Transformer Vacuum Pumping Set
Transformer Dry Air Generator

REXON Aftersales Services:
-We will help to arrange the transport and shipping for the machine to customer.
-We offer full set documents for customs clearance at customer's destination port.
-We will offer lifetime technical support for our equipment, free technical upgrade, free or chargeable spare parts supply, etc.
-We offer online service for customers 24 hours everyday. If you have any question while using our machine, you can contact us by online chat software, or by email, phone etc, we will get back to you very soon within 4 hours.
-We will also offer operation training for free in our factory and offer door-to-door service to send our engineer to your place for the machine's installation service and operation training if you need.
-Installation, Operation and Maintenance details will be in the operation manual booklet and videos which will be sent to you with machine.
-Rexon's guarantee time is two years for each of our equipment.
Chongqing Rexon Oil Purification Co., Ltd is a leading oil purifier manufacturer in China, which engages in developing, producing, selling a series of oil purifier such as transformer oil purifier, turbine oil purifier, engine oil purifier, lube oil purifier, cooking oil purifier and so on. We practiced in this line near 20 years, so we have a strong technology and gain rich experience. Our products have been exported to many countries, and get a high reputation.
Since the foundation of our company, under the duty of devoting our efforts to develop the advanced purifier for saving energy sources, adopting the advanced management like SUBI, and with the reliance on the strong technical force, advanced equipment of production, perfect quality check method, fast and outstanding after-sales service, our company has developed into a national big base specialized in producing oil purifier. Our products are outstanding because of its excellence in quality, stability in service, and diversity of products.
Rexon owns a number of national-class oil purifier experts and experienced engineers. Encouraged by the company's modern management mechanism, we have developed six big series, including hundreds of models oil purifier equipment which have the independent property right and advanced filter technology. Those equipment can be applied to many fields, such as the electric power, petroleum chemical, metallurgical industry, mine, aviation, shipping and railway, and so on.
We adhere to the tenet of mutual-benefit and win-win. With the sincere and pragmatic work attitude, we would like open up new Sci&Tech oil purify era with our customer.
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For more information about any model of our oil purifier's specs, please leave us your Email, Tel, Mobile No. etc. then we can feedback to you immediately. Or you can contact us directly from our website. Don't hesitate to send us enquiry now! Welcome to visit us!