Meeting today's demanding requirements for removal of liquid and solid contaminants from gaous and liquid systems.
Hollingsworth & Vo manufactures a comprehensive line of coalescer media solutions for applications that require gas, liquid, and liquid-liquid paration. To meet key market demands, H&V offers a choice of fiberglass, cellulo, and synthetic media combined with specialized organic binders. For applications requiring additional structural integrity, the media are also available with lamination.
H&V's coalescer media are ideal for parating oil and/or water from compresd air and natural gas and for removing water from oil, aviation, and other fuels. With mean pore sizes ranging from < 1 to 25 microns, the media meet your needs for almost any level of paration.
Media Choices
A wide range of media is utilized in coalescing applications. Hollingsworth & Vo's broad manufacturing capabilities include microfiberglass, cellulo, and nonwoven media.Microfiberglass provides superior coalescence of the smallest contamination droplets. Cellulo media are rugged and economical. Carded nonwovens are suitable as coar layers and
protective wraps. A variety of nonwoven scrims can be laminated to increa structural integrity.
High Efficiency & Specialty Filtration
Hollingsworth & Vo is a recognized leader in high-performance filter media. Our product line includes:•Coalescer
•HEPA & ULPA cleanroom •Industrial & commercial HVAC •Residential HVAC (furnace)•Specialty liquid filtration •Room air cleaners •Respiratory protective equipment •Vacuum cleaners
Media Selection
When choosing filter media for your coalescing application, consider factors such as:•Carryover/efficiency
•Clean pressure drop
•Chemical compatibility
•Economics
•Service life打招呼
•Operating temperature and pressure range
While overall element configuration determines filter properties, media lection can play an important role in achieving desired characteristics.
Microfiberglass
H&V microfiberglass media are clearly superior for many coalescing applications. The fibers are naturally oleophobic, so oil droplets adhere but do not swell them. Low binder content means more fiber area is available for contaminant capture and coalescence.
Our microfiberglass media are designed and manufactured to provide uniform products. A wide range of properties is available in standard grades.
•< 1.20+ micron MFP
•Minimum flow resistance
•Excellent chemical resistance
•Long life
•37 to 125 lb/rm basis weight, single caliper
•With or without laminated support scrims
•With or without water repellency
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Cellulo
H&V cellulo coalescer media are excellent choices when applications demand a more economical alternative to glass, yet still require low carryover and long life. The rugged media are appropriate for a broad range of processing equipment and production capabilities. Some typical properties include:
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•Heavy basis weight
•Corrugation
•MFP of 30+ microns
•Acrylic, phenolic, or blended binder types
放烟花的英文•High strength
•Low levels of glass fibers
The Coalescing Process
The smallest water or oil droplets (< 1 µm diameter) adhere to fibers with diameters of less than 1 micron. As the media become saturated, droplets come in contact with other droplets on the fiber surface. The droplets merge or coalesce into larger droplets.
The contaminant droplets continue to grow until they are heavy enough for gravity to parate them from the fluid or gas stream that is being cleaned. The contaminant drains via gravity from the bottom of the filter while the clean stream flows through the element.头发太硬怎么办
Applications
Gas-Liquid Separation
Compresd air is cleaned for a variety of reasons: equipment protection, pollution control, oil recov
ery, and protection of downstream process. Removal of oils, lubricants, water, and particulate contamination from gas is a growing environmental concern for industry. For example, manufacturing modernization has significantly incread the u of pneumatic robots,which rely on equipment with small orifices that can be easily clogged by contaminants.Incread environmental regulation and awareness have highlighted the need to remove oily contaminants from process gas prior to atmospheric discharge.
Liquid-Liquid Separation
A critical application for liquid-liquid coalescence is the removal of water from aviation and other fuels. Water can be dissolved in aviation fuel in concentrations up to approximately 50 ppm. At higher concentrations, water forms droplets. At low temperatures, the droplets freeze and can interrupt the flow of fuel.
Filter Construction
H&V media are utilized in both pleated and wrapped configurations. The are frequently multi-layer to provide depth filtration. This can result in reduced contaminant carryover and longer filter life. Multiple layers may be of the same media grade or of grades with different efficiency levels.
Filtration takes place through a combination of process: diffusion for 0.3 micron and smaller droplets; inertia and impaction for droplets of 1 to 20 microns. When droplets coalesce to a size of 20+ microns,gravity draws them out of
the stream.
Contaminated air Filter media Clean air
Coalescer Microfiberglass Filter — U.S. Grades
COALESCER MICROFIBERGLASS FILTER MEDIA
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— See Technical Tips ction for ASTM references.
Basis weight: TAPPI Method T410直发发型图片
Strip tensile/elongation: TAPPI Method T494
Permeability: ASTM Method F778-82
炸酱面DOP smoke penetration: ASTM Method D-2986
Caliper: TAPPI Method T411
Air flow resistance: ASTM Method D-2986
Gurley stiffness: TAPPI Method T543
Die Zahlenangaben sind typische Mittelwerte aus Produktionen und nicht als Spezifikation zu betrachten.Data quoted above are typical mean test values from production runs and do not form a specification.
COALESCERMEDIEN COALESCING MEDIA
Coalescer Microfiberglass Filter — European Grades
Other Specialty Grades Available
In addition to our standard microfiberglass grades, various grades in cellulo and laminated constructions are available from any one of veral H&V locations worldwide. All of the grades are designed to maximize coalescence and achieve the low carryover rates demanded by high-quality filtration.
