A wire mesh mist eliminator can be defined, in short, as a mist separator for collecting, separating and removing unwanted substances (impurities) entrained in a liquid or gas stream by means of wires forming the mist eliminator to increase the efficiency of separating (distillating and rectifying) operation.

Mist Catching Effect

A mist eliminator effects separation as a gas stream impinges against the eliminator. The stream of gas generated from a liquid moves up through the column (with fine particles of liquid entrained in the stream), and impinges against the mist eliminator. As the liquid particles entrained in the gas stream come into contact with the surface of the wires in the mist eliminator, they are temporarily retained there due to wettability and capillarity of the wires and the surface tension of the liquid before they grow to a larger size, and finally drop by gravity to the bottom of the column.

1. Used for collecting, separating and removing impurities contained in liquids and gases.
   (1) Mist removal (2) Pollution control (3) Improvement of separating efficiency.
   (Ex.) Separation of water and oil from air in which the water and oil are entrained.
   * Unsuitable to separation of powdery matters.
   
2. Separation is basically achieved by three principles:
   (1) Brownian Diffusion (2) Direct interception (3) Inertial impaction
3. Used in oil refineries and other plants.
   (1) Gas chemical industry (2) Electronics industry
4. Characteristics
   (1) Void ratio - 94 to 99% (2) Weight - Light (3) Surface area - Large (4) Pressure loss - Low

Materials

Stainless steel (SUS304, 304L, 316, 316L), titanium, aluminum, Inconel®, Monel®, nickel, copper, brass, polypropylene, grass fiber, PFA, Teflon®, Aflon®

Applications

Styles

STYLE NO.	Structure	Description
SK-80		For a given load of liquid, the highest flow velocity is achieved of all styles. Ideal where it is required to minimize the pressure loss, possible clogging is concerned, the size of particles to be collected is relatively large, and/or a very high efficiency is not required. The standard thickness is 150 mm. For conditions corresponding to those of SK-192, the thickness of 200 mm is applied.
SK-144		Used for general purposes. An efficiency of 98 to 99% is achieved at a velocity of 1 to 5 m/sec.
SK-192		Used where an especially high efficiency is required. While pressure loss is slightly higher, it achieves an efficiency of 99 to 100% with particle sizes 3μ or more at a velocity of 1 to 6 m/sec., and is ideal where an efficiency of 90% or more is required at a velocity of 1 m/sec. or less.
SW-216		Used for collecting fine particles of 1 to 3μ in size. Especially for a low-density mist of 1.0 g or less, it is used in a thickness of 200 to 300 mm.
SW-432		Used for collecting fine particles. An efficiency higher than that of SW-216 can be achieved. The most remarkable characteristic is that it provides a high efficiency with a reduced thickness.

Specifications

Special Mist Eliminators

OK-450 φ0.12×2mm opening

Glass Wool

PP (polypropylene) φ0.25

Teflon® or PFA φ0.25

Forms

* A suitable form of mist eliminator should be selected for a particular application, location, and set of conditions.

Stacked

A specific thickness and diameter required for a particular application can be obtained, and the mist eliminator can be cut to sections for easy installation through a manhole of the tower. Layers of crimped wire meshes are stacked alternately, as shown in the picture, to a specified thickness and diameter.

Wound

Produced to a specified diameter by winding crimped wire meshes with a required width.
Used for small-sized not large-size towers.

Framed Mist Eliminators	PFA Mist Eliminator with Grids