About Demister
What is a demister?
The mist contained in gas has negative effects in various aspects, such as air pollution, mechanical corrosion, and loss of raw materials. The mist is mechanically generated from each tower as scrubbers, cooling towers, and evaporaters has a quite big particle diameter of tens ~ hundreds of microns. And the mist generated through condensation and chemical reactions of gases is very fine.

A demister, also called a mist eliminator, wire mesh separator, or wire mesh blanket, is a type of filter that separates and removes mist or dust contained in a fluid or gases. and It’s also a reaction activator that effectively makes a reaction. The demister is also semi-permanent because it is manufactured using various materials depending on the usage conditions, and its simple structure makes it easy to install and repair, making it a very economical product.
How it works
The right figure shows the operating principle of the demister working on an evaporating system.When the gas generated from the liquid (L) turns into bubbles (V) and these bubbles rise up, at this time, the surface of the liquid bursts and minute particles of the liquid are generated and accompanied with gases, which go through the demister. The minute particles, before going through the demister, get to have big volume due to the inertial collision principle on the surface of a pad. The particles containing foreign materials fall down due to weight and the gases or the gases containing the liquid components that have gone through the demister become pure gases that impurities are perfectly removed, and then, they go out of the demister.
Features by Demister style
DSM-800 Usgae conditions for the case that high velocity and low pressure drop is required,
or collecting larger particles, no need high efficiency. It’s used for general collection efficiency. (Heavy processing type)
DSM-1440 The type is widely used in petrochemical plants and as a standard type for general efficiency purposes.
Pressure drop is relatively small, and the collection Efficiency is typically 90 to 99%. (Standard type)
DSM-1905 Most commonly used as a High-efficiency Standard type. Generally, it has an collection efficiency of
90 to 99% for particles of about 10micron. (High-efficiency standard type)
DSM-3903 Twice the structure of standsrd type. In particular, it’s used for high efficiency is required.
The Pressure drop may increase, but efficiency is over 90% at a low velocity 1 m/sec or less
DSM-2205 Used to collect fine particles of about 3micron In particular, in the case of low concentration, when the quanity of mist (dust) is less than 10 g/m³, the collection efficiency can be doubled as the thickness is increased. ( High -efficiency type )
DSM-4320 Used for collecting ultrafine particles Measuring less than 0.5–1 micron; higher effectiveness than the DSM-2205 style can be achieved. (Ultra high-efficiency type)
DSM-JM Manufactured as a composite structure of DEMISTER element, according to the usage conditions.
High-efficiency performance is required under limited usage conditions
Various materials can be used for manufacturing depending on the application. The main materials are as follows:
Stainless Steel ( STS304, STS316, STS316L ),
Monel, Duplex, etc.
P.P (Poly Prorylene), P.E (Poly Ethylene),
HPE, etc.
Glass Fiber


Air pollution
Removing harmful substances from gas


product purity
Removing impurities from gas


Cost reduction
Preventing the scattering of the product’s raw materials


Extending plant life
and providing an
energy-saving effect
Collecting mist separately by installing in the pre- and post-plant processes