Practical Application of Fluorosilicone Oil and Polyether Blending Technology in Oil and Gas Separation Processes
Technical Principles and Chemical Properties
Fluorosilicone oil is a specialty silicone oil modified by introducing trifluoropropyl groups into the siloxane chain. Its molecular structure consists of oligomers terminated with hydroxyl or methyl groups. Compared to ordinary silicone oils, fluorosilicone oils have significantly improved chemical stability, especially in highly polar solvents and corrosive environments. Polyether silicone oils are block copolymers formed by chemically bonding a polydimethylsiloxane backbone with polyether side chains. They combine the hydrophobicity of silicone with the hydrophilicity of polyether.

The combination of these two materials combines the corrosion resistance of fluorosilicone oil with the surface activity of polyether silicone oil, offering the following advantages in oil and gas separation:

Enhanced interfacial activity, promoting oil-water separation
Improved stability in extreme environments
Reduced surface tension, improving separation efficiency
Application Background and Industrial Practice

Applications in Oil and Gas Separation
Fluorosilicone oil is primarily used as a defoaming agent and lubricant in oil and gas separation, making it particularly suitable for use in harsh environments. Its excellent chemical inertness makes it resistant to nearly all organic solvents and chemical media, even resisting radiation and corrosion from uranium hexafluoride at temperatures of 130°C.

Polyether silicone oil is widely used in industry as a functional additive, particularly in composite material processing and the textile industry. In oil-gas separation processes, the combination of these two oils can achieve synergistic effects:

Defoaming performance: Effectively controls foam formation during the separation process
Lubrication performance: Reduces equipment wear and extends service life
Thermal stability: Adapts to a wide operating temperature range (-70°C to 300°C)

Practical Case Study
In carbon fiber production, a combination of fluorosilicone oil and polyether has been successfully used for monofilament surface protection, effectively reducing inter-fiber friction, preventing adhesion, and static electricity accumulation. This application demonstrates the excellent performance of this combination technology in interface treatment.

Perfluoropolyether oils have also been successfully used in the aerospace and semiconductor manufacturing industries. For example, after treatment, the kinematic viscosity of Fomblin Y25 oil used in wafer fabs has been restored to 24.8 mm²/s (standard 25 ± 1), and the moisture content has been reduced to 38 ppm (required ≤ 50 ppm). These high-precision applications demonstrate the reliability of fluorosilicone oils under harsh conditions.

Oil-Gas Separation Operation Process
When using fluorosilicone oil and polyether blending technology in oil-gas separation processes, the following key steps must be followed:
Pretreatment: Clean the separator and surrounding environment, and check the condition of all components.
System Startup: Open the feed valve, start the feed pump, and introduce the mixture into the equipment.
Flow Control: Adjust to the designed flow rate. Excessive or insufficient flow will affect separation performance.
Parameter Setting: Determine the operating temperature and pressure based on product properties.
Performance Monitoring: Check for leaks around the equipment and adjust the liquid level controller.
System Shutdown: Shut down the equipment in reverse order at the end of the operation.