描述
For the Most Difficult Emulsions
Pall’s PhaseSep HE Series Coalescer is a high efficiency separation cartridge that is designed to handle the toughest emulsions. Constructed with a fluoropolymer medium, Pall PhaseSep HE Series Coalescers can be used in a wide range of liquid / liquid separations in the refinery, chemical, flavor & fragrance, and biotechnology industries. The Pall PhaseSep HE Coalescer should be used for difficult emulsions where improved performance is required. Performance of PhaseSep
HE Series Coalescers:- Removes sodium down to ≤ 1 ppmw in cumene hydroperoxide
- Decreases sodium to <0.5 ppmw in refinery products
- Processes inlet dispersed liquid contaminant concentrations as high as 10%
- Separates emulsions with interfacial tensions as low as 0.5 dyne/cm
Note: Each application for the PhaseSep HE Series L/L Coalescer should be reviewed by Pall Corporation for technical feasibility.
The Pall pre-filter and horizontal liquid / liquid coalescer system is depicted below. The first stage consists of a pre-filter housing that is used to remove solids from the inlet emulsion stream to protect the coalescer and ensure long service life. The pre-filter also functions as a pre-coalescer by initiating the process of combining the finer droplets in the emulsion into intermediate size drops that continue to enlarge in the coalescer medium.
In the coalescer housing, the liquid / liquid emulsion enters the PhaseSep HE series coalescing element and flows inside to outside. Dispersed phase droplets that are suspended in the continuous phase come together, or coalesce, as the emulsion moves through the fibrous coalescer medium. The coalescer medium has a tapered pore structure that varies from fine to coarse to allow for the growth of the drops. As the large coalesced droplets of the dispersed phase leave the coalescer cartridges, they are separated via density difference between the two phases in the settling zone of the horizontal housing. The drops collect in a sump where automated level control and valves monitor the interface level. The sump can be located on the top or the bottom of the coalescer housing to address specific density differences between the two phases.
Compatibility
The PhaseSep HE series coalescer is compatible with many corrosive solvents encountered in the refinery, chemical, flavor & fragrance, and biotechnology industries including cumene hydroperoxide, methylene chloride, ammonia, urea, caustics, amines, alcohols, and many other organic solvents. For compatibility information with a specific chemical, please contact your Pall distributor or Pall applications engineer.
应用
- Separation of caustic from organic peroxides
- Separation of caustic or water from methylene chloride
- Separation of oil from caustic or water streams
规格
Performance Claims and Specifications
Maximum Temperature*: 300°F (149°C)Initial System Pressure Drop: 2 psid (0.14 bar)
Recommended Changeout Pressure Drop: 15 psid (1.03 bar)
Maximum Forward Pressure Drop: 50 psid (3.5 bar)
* With stainless steel end caps, 160°F (71°C) with fluoropolymer end caps.
Materials Of Construction
| Part Number | Media/ Outer Sleeve | Support Layer/ Core | End Caps | O-ring |
|---|---|---|---|---|
| LCS4HEHH LCS2HEHH LCS06HEHH |
Fluoropolymer | 316L Stainless Steel / 304 Stainless Steel |
Melt Bonded Fluoropolymer |
*fluorocarbon elastomer1 |
| LCS4HEAH LCS2HEAH LCS06HEAH |
Fluoropolymer | 316L Stainless Steel / 304 Stainless Steel |
Epoxy Potted 304 Stainless Steel |
*fluorocarbon elastomer1 |
* Also available in Buna N, fluorocarbon elastomer A, Ethylene Propylene (EPM), and Silicone.
1 fluorocarbon elastomer is a registered trademark of DuPont Dow Elastomers.
| Feature | Advantage | Benefit |
|---|---|---|
| Fluoropolymer construction | Wide chemical compatibility Coalescence performance not impaired by presence of surfactants |
Ability to withstand upsets in pH and aggressive service applications Eliminates need for emulsion breaking chemicals |
| Special formulated tapered pore structure |
Can separate liquids that have low Interfacial tension |
Excellent fluid quality Enhanced protection of downstream equipment |
| High void volume medium | Long service life | Lower separation costs |
类型
Coalescers
应用
Petrochem quench water, Chem Final Product (Liquid), Poly Cmdty Intermediate (Fluids), Poly Engrd & Spcl Intermediate (Fluids)
订购信息
Coalescer Selection
The presence of difficult-to-separate emulsions can be a costly problem in the refinery, chemical, flavor & fragrance, and biotechnology industries. Liquid contaminants can cause final products to be off-specification, deactivate expensive catalysts, foul contactor and stripping trays, lead to corrosion, result in delays when separation is required in downstream storage tanks, and increase the costs for wastewater treatment.Breaking stable emulsions can be a difficult task depending on the physical properties of the oil, water, and surfactant system. Important parameters in determining the ease of separating emulsions are the interfacial tension (IFT), density difference, and viscosity. The IFT is a good way to assess the stability of an emulsion, and along with the amount of shear the fluid has experienced, will determine how small the droplets are in the emulsion. For very stable emulsions with an IFT of less than 20 dyne/cm, conventional glass fiber coalescers can lose their efficiency. One final consideration when selecting a coalescer type is compatibility. Pall offers a wide range of coalescers constructed of various polymers and fluoropolymers to meet the needs of industrial applications.
Ordering Information
| Part Number | Description | Nominal Diameter | Nominal Length |
|---|---|---|---|
|
LCS4HEHH/ |
PhaseSep HE Series L/L Coalescer |
3 3/4 in. (95.3 mm) |
40 in. (1016 mm ) |
| LCS2HEHH/ LCS2HEAH |
PhaseSep HE Series L/L Coalescer |
3 3/4 in. (95.3 mm) |
20 in. (508 mm ) |
| LCS06HEH/ LCS06HEAH |
PhaseSep HE Series L/L Coalescer |
2 3/4 in. (69.9 mm) |
6 in. (152.4 mm ) |
分类信息
Petro Chem, Chemicals, Polymer, Polymer
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