FILTER-COALESCER Model 1363

The Hollikolnen FILTER-COALESCER solves the twotold problem ot tiltering and water-coalescing liquid sample streams with CI one package unit. The element will not react chemically with the sample, change its state, or inhibit its flow. In addition, the element and housing are designed to minimize residence volume, and thereby reduce overall sampling system response time.

i 1.1/4 API The general configuration chosen for the Hollikainen FILTER-COALESCER wets to satisfy several requirements.

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2. 3. Large filter surface clrea to minimize the pressure drop produced by very viscous products.

Ease of assembly, installation and element re- placement.

A coaxial flow to produce a self-draining action while simultaneously providing a high flow rate sweepstreom.

4.

5. 5. A minimal water settling volume outside the coalescing section of the element which would also permit free water dropout and collection during maximum flow of conditioned sample

Simple and reliable pressure sealing.

High element life or conversely, high holding capacitv.

The use of o simple clamping band around the flanges formed to hold a Quad ring, permits the ioint to be closed or opened quickly. The nature of the Quad ring seal obviates the necessity of high clamping pressure to produce CI secure and reliable leak-free joint. The housing is designed for a working pressure of 450 psig (test 600 psig].

The FILTER-COALESCER element is rated for a minimum differential pressure of 100 psi without structural failure. It has been designed for maximum filtration efficiency by using many overlapping layers of successively varying fibreglass density and fibre diameter. Three (3) progressive bands are used to hold dirt. A conservative removal rating based on test is 2 microns. The capacity of the FILTER-COALESCER is about 4 GPM (based on kero- sene.)

In addition to the high efficiency of the unique fibreglass ConsTruction, an inner strainer core of perforated stainless steel tubing serves as the initial filtering surface and supports the element against bending. Radial burst strength is provided by CI fibreglass screen wound around the third bond of the element.

ANALYTICAL INSTRUMEyfc `=OR CONTINUOUS PROCESSES I

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The sweepstream flowing at a high rate through the unimpeded uniform central bore of the element car- ries with it most of the solid contaminant by virtue of the high momentum and simultaneously produces o self-cleaning action by washing away particles which might hove a tendency to cling to the screen surface or lodge in the perforations. This self-cleaning characteristic not only increases the life of the filter section of the element by sweeping away contaminants but also reduces the load on the coalescing section since it tends to also keep the heavier water-flow droplets suspended in the main coaxial stream flow path.

The coalescer section is wound around the fibreglass screen that reinforces the third filtering bond and is fabricated of coarse 300 millionths diameter fibres. This coarse fourth bond is used exclusively for coalescing water as solid contaminants have already been entrapped in the three preceding graduated bands.

An important aspect of fabrication of the FILTER-COALESCER element is the type of fibreglass used. The phenolic resin which binds the fibres together ore cured after the element is formed. This technique prevents binding, warping, squeezing and often breaking of the fibres os they ore forced into the shape required.

The resin used in the FILTER-COALESCER to bind the gloss fibres may be used with caustic solutions to o pH of approximately 9.

To further oswre that none of the coalesced water enters the effluent stream, a separator barrier is employed. A double polyurethane foam settling sock around the fibreglass elements aids in removing water. An inner coarse porosity layer of foam holds the coalesced drop until it builds up to a sufficient size by com- bining with other drops, that flow downward against the upward flow of water-free sample. The second outer layer of fine porosity foamed urethane permits sample flow of water-free sample at the top while forcing coalesced water out at the bottom.

The produti leaving the coalescer, although it is completely void of free water, may nevertheless exist as a 100% saturated solution at the existing temperature. If this exit temperature is higher than ambient, any further cooling in the line connecting the FILTER-COALESCER with the analyzer intake will cowe water to precipitate out of solution. It is obvious therefore, that the sample must be cooled sufficiently prior to its entry into the coalescing element to ovoid downstream water dropout.

A cooling coil which con be inserted in the unit is under development os an accessory item. This coil, it oppeors, will lower sample temperature from 10" to 50°F. depending on sample inlet temperature and flow and cooling water temperature.

GENERAL SPECIFICATIONS FILTER-COALESCER Contaminant Removal Rating -2 micron, or better

FILTER-COALESCER CAPACITY. For Zero By Pass ml/min. #1 Diesel Oil, Gas Oil or Materials with Sp. Gr. .82 to .90 500 Kerosene or Materials with Sp. Gr. of .78 to .82 750 Gasoline or Materials with Sp. Gr. of .68 to .78 1000

FILTER-COALESCER Liquid Volume - Approx. 300 ml Pressure Limitation-450 psig Temperature Limitations-250°F. Materials of Construction-All metal parts in contact with sample are 316 stainless steel Connections- Sweepstream Sample In-l `A" NPT Sample Out-l IL" NPT Dry Sample & Drain or Bypas~-`/~" NPT FILTER-COALESCER Element Burst Strength >lOO psi AP With By Pass Flow Rate 4 X Sample Flow Rate ml/min. 1000 1500 2000

EXPLODED VIEW, FILTER-COALESCER

Port Numbers for Replacement Ports Quad Ring -BY-505 -7

FILTER-COALESCER Element - CF.489 Bond Clamp. W-572

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