Emulsified oil-water coalescing filter – 5–50 ppm, five-layer.

1. Product Introduction

Aite Coalescing Filters for Deep Separation of Emulsified Oil-Water are engineered to address widespread

 industrial fluid pollutants generated during thermal power turbine oil circulation, petrochemical process

 fluid circulation, hydraulic lubrication stations, offshore marine equipment, machinery cleaning wastewater, 

and aviation fuel storage and transportation systems. Unlike free standing water that can be separated by simple 

gravity sedimentation, stable emulsified micro-water droplets with particle size of 0.1–5μm are wrapped by

 surfactants and oil oxidation colloids – which cannot be removed by conventional single-stage filtration,

 sedimentation tanks, or vacuum dehydration equipment with low efficiency and high energy consumption.

Aite Coalescing Filters for Deep Separation of Emulsified Oil-Water utilize multi-layer gradient borosilicate glass

 fiber composite media to achieve integrated solid particle interception and micro-emulsion breaking and 

coalescence separation – relying on selective hydrophilic-oleophilic fiber wettability and multi-stage gradient 

pore structure. This technology can break stable surfactant emulsions, aggregate submicron water droplets into

 large droplets over 200μm, and complete gravity layering separation – reducing outlet residual water content to 

below 5–50 ppm, meeting ultra-purification standards of high-value industrial fluids and environmental 

discharge limits.

As a professional manufacturer specializing in industrial filtration equipment, we deliver Aite Coalescing Filters

 for Deep Separation of Emulsified Oil-Water with stable performance, reliable construction, and competitive

 pricing for industrial facilities worldwide.

2. Core Separation Mechanism

2.1 Two-Stage Deep Separation Principle

Aite Coalescing Filters for Deep Separation of Emulsified Oil-Water operate through four continuous physical 

processes:

Solid Pre-Interception Stage: The outer coarse fiber support layer intercepts large solid particles over 10μm such 

as metal wear debris, rust, and oil sludge – avoiding hard particles scratching the inner fine coalescence fiber

 and blocking the coalescence channel.

Micro-Droplet Capture Stage: The middle gradient hydrophilic glass fiber layer forms a dense three-dimensional

 fiber network. Emulsified micro-water droplets wrapped by surfactant collide with fiber surfaces under laminar

 flow state. Due to the hydrophilic property of borosilicate fiber, water droplets are selectively adsorbed on fiber

 gaps, while oil phase freely passes through fiber voids.

Coalescence Growth Stage: Captured micro-water droplets continuously collide and merge on fiber surfaces,

 breaking the surfactant wrapping film. The droplet diameter grows from initial 0.1–5μm to over 200μm, and the

 density difference between water and oil makes gravity overcome fluid drag force to separate from the fiber

 matrix.

Anti-Re-Entrainment Separation Stage: The outermost hydrophobic PTFE coated separation layer forms an 

oil-permeable and water-blocking barrier. Large coalesced water droplets slide down along the outer surface 

of the filter element to the bottom settling zone under gravity – preventing large water droplets from being 

re-entrained into clean oil by high-speed fluid to form secondary emulsification.

2.2 Multi-Layer Gradient Composite Structure

Aite Coalescing Filters for Deep Separation of Emulsified Oil-Water adopt a five-layer integrated composite 

molding structure from inside to outside:

Layer Material & Specification Function

Inner Support Cage Perforated 304/316L stainless steel mesh, 1.2–1.5mm thickness, 3–5mm aperture Resists 

inward extrusion deformation under 0.15 MPa differential pressure

Primary Coalescence Core Ultra-fine borosilicate fiber, 0.7–1.2μm diameter, hydrophilic impregnation, 1–3μm 

pore size Captures submicron emulsified water droplets below 3μm

Transition Gradient Layer Mixed fiber of 1–3μm and 3–5μm, gradient pore size Balances flow resistance and dirt 

holding capacity

Pre-Filter Protection Layer Coarse glass fiber, 3–5μm diameter, large void ratio Intercepts most solid pollutants

 to reduce core layer load

Outer Hydrophobic Separation Layer PTFE microporous film composite polyester base cloth, water contact

 angle >110° Prevents re-entrainment, only allowing clean oil phase to pass through

End caps at both ends are bonded with high-temperature oil-resistant epoxy adhesive, equipped with integral 

elastic NBR/FKM sealing rings to eliminate internal leakage gaps caused by assembly vibration

3. Technical Specifications

Parameter Specification

Product Type Coalescing Filter for Emulsified Oil-Water Deep Separation

Separation Mechanism Coalescence + anti-re-entrainment separation

Structure Five-layer gradient composite media

Outlet Residual Water Content 5–50 ppm

Maximum Working Differential Pressure 0.15 MPa

Inner Support Cage Material 304/316L stainless steel

Coalescence Core Fiber Diameter 0.7–1.2μm

Outer Separation Layer PTFE microporous film, water contact angle >110°

Sealing Material NBR / FKM (optional)

Installation Direct replacement – no housing modification

4. Application Fields

Aite Coalescing Filters for Deep Separation of Emulsified Oil-Water are widely used across diverse industrial 

sectors:

Industry Typical Applications

Thermal Power Turbine oil circulation purification

Petrochemical Process fluid circulation and emulsified oil-water separation

Hydraulic Lubrication Hydraulic station oil purification and dehydration

Offshore Marine Marine equipment oil-water separation

Machinery Cleaning Cleaning wastewater treatment

Aviation Fuel Aviation fuel storage and transportation system dehydration

5. Quality Assurance & Supply Capabilities

Aite Coalescing Filters for Deep Separation of Emulsified Oil-Water are manufactured under strict quality control

 standards in our own production facilities. Each element undergoes comprehensive testing to verify:

· Separation Performance: Outlet residual water content 5–50 ppm validated

· Structural Integrity: Pressure testing to confirm 0.15 MPa maximum differential pressure

· Sealing Integrity: Leak-proof verification

· Material Quality: Borosilicate glass fiber and PTFE material certification

· Wettability: Hydrophilic-oleophilic balance verified

Supply Capabilities:

· Small trial orders: 15–20 days delivery

· Bulk orders: 30 working days delivery

· EXW, FOB, and CIF trade terms available

· Full export documentation for smooth customs clearance worldwide

6. Frequently Asked Questions (FAQ)

Q1: What are Aite Coalescing Filters for Deep Separation of Emulsified Oil-Water designed for?

A: Aite Coalescing Filters for Deep Separation of Emulsified Oil-Water are designed to break stable surfactant 

emulsions and separate micro-water droplets from oil – reducing outlet residual water content to below 5–50 

ppm for thermal power, petrochemical, hydraulic, marine, and aviation fuel applications.

Q2: How does the two-stage separation principle work?

A: Aite Coalescing Filters for Deep Separation of Emulsified Oil-Water operate through four stages: solid 

pre-interception, micro-droplet capture, coalescence growth, and anti-re-entrainment separation – breaking

 emulsions and aggregating submicron water droplets into large droplets over 200μm for gravity separation.

Q3: What is the outlet residual water content achievable?

A: Aite Coalescing Filters for Deep Separation of Emulsified Oil-Water can reduce outlet residual water content to

 below 5–50 ppm – meeting ultra-purification standards of high-value industrial fluids.

Q4: What is the structure of the coalescing filter element?

A: Aite Coalescing Filters for Deep Separation of Emulsified Oil-Water adopt a five-layer composite structure

: inner support cage, primary coalescence core layer, transition gradient layer, pre-filter protection layer, and

 outer hydrophobic separation wrapping layer.

Q5: What is the function of the outer hydrophobic separation layer?

A: The outer PTFE microporous film separation layer of Aite Coalescing Filters for Deep Separation of Emulsified 

Oil-Water forms an oil-permeable and water-blocking barrier with water contact angle >110° – preventing large 

water droplets from being re-entrained into clean oil.

Q6: What is the maximum working differential pressure?

A: Aite Coalescing Filters for Deep Separation of Emulsified Oil-Water have a maximum working differential 

pressure of 0.15 MPa – with inner support cage resisting inward extrusion deformation.

Q7: What sealing materials are available?

A: Aite Coalescing Filters for Deep Separation of Emulsified Oil-Water are available with NBR or FKM sealing 

rings – ensuring leak-free sealing across the full operating temperature range.

Q8: What documentation is provided with the coalescing filters?

A: Each shipment includes material certificates, filtration performance test reports, dimensional inspection 

records, and factory quality certificates – ensuring smooth customs clearance.

Q9: Can the coalescing filters be customized?

A: Yes. Custom options for Aite Coalescing Filters for Deep Separation of Emulsified Oil-Water include special 

dimensions, media configurations, and sealing materials – based on site-specific requirements.

Q10: What industries use the coalescing filters?

A: Aite Coalescing Filters for Deep Separation of Emulsified Oil-Water are widely used in thermal power,

 petrochemical, hydraulic lubrication, offshore marine, machinery cleaning, and aviation fuel applications.

Q11: How does the coalescing filter compare to conventional separation methods?

A: Aite Coalescing Filters for Deep Separation of Emulsified Oil-Water can break stable emulsions that 

conventional single-stage filtration, sedimentation tanks, or vacuum dehydration equipment cannot handle – 

with higher efficiency and lower energy consumption.

Q12: Can I order samples before bulk purchase?

A: Yes. We support paid sample orders with production lead time of approximately 5–7 days. Sample costs are

 fully deductible from your first bulk order upon approval.

Aite Coalescing Filters for Deep Separation of Emulsified Oil-Water – five-layer gradient composite structure,

 two-stage coalescence and anti-re-entrainment separation, outlet residual water content 5–50 ppm, suitable

 for thermal power, petrochemical, hydraulic, marine, and aviation fuel applications. Contact us today for a free

 configuration recommendation and competitive factory-direct quotation within 24 hours.