Analysis of two major types of coalescers

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Analysis of two major types of coalescers

Date: 2020-02-17

The coalescer mainly uses the two types of filter elements contained in it to coalesce and separate materials such as water and alkali contained in the medium (not limited to diesel oil). Generally, it includes the separation filter element and the coalescing filter element; the coalescing filter element is demulsified by filtering, The coalescence and sedimentation process can coalesce the small water droplets in the medium to be dehydrated, and the large water droplets can be used. Then, the water-repellent property of the separation filter element using the separation filter element is used to block water outside the filter element and then remove the water in the medium. The simple point of the dehydrator is to let the water of small molecules coalesce into water of large molecules and then remove it from C4. The structure is also a filter element, nothing special. The following are the two types of coalescers:

1. Parting water coalescer in oil

The coalescer is equipped with two filter elements with different functions, a coalescing filter element and a separation filter element. The medium to be dehydrated enters the housing from the inlet of the filter separator. When the liquid passes through the filter element containing the special coalescing medium, the liquid flows from the inside of the coalescing filter element to the outside, and the emulsification is carried out through four processes: filtration, demulsification and coalescence. The liquid is demulsified, and the small water drops after demulsification are aggregated into large water drops and settle to the bottom of the shell.

Some small water droplets that have time to settle in the future flow with the liquid to the separation filter element. The separation filter element is made of special materials and has outstanding hydrophobic properties. The small water droplets are completely and effectively blocked outside the filter element, and they are aggregated again to form large water droplets. Then indeed

Ensure effective removal of moisture. The water level that has settled to the bottom of the casing is displayed by a liquid level gauge, which can periodically drain water and dirt through the drain valve. The oil flows from the outside to the inside of the filter element, and the medium separating the moisture is gathered by the tray of the separating filter element, and then flows out from the outlet of the separator. Water and oil are drained through different drains.

2. Oil separator in water

The working principle of the coalescing water separation oil filter element: the mixture is demulsified and the cells are blocked-the oil is blocked-impact-affinity-agglutination-adsorption-floating

Filter element structure: The filter element type is in and out, which is composed of affinity layer, agglutination layer and adsorption layer.

Affinity: The filter element binds the internal and external oil droplets together. Under the effect of specific gravity, the large oil droplets directly float and separate.

Agglutination: Suspended small particles of oil, coalesce into large oil droplets under the effect of lipophilic filter media.

Adsorption: Large oil droplets are continuously captured by the adsorption layer designed on the outer layer of the filter element to avoid secondary take-off.

Floating: Under the effect of liquid homosexual mutual affinity, the oil with an increased specific gravity rises quickly to achieve liquid-liquid separation.