Model Number

Knit mesh, kosh,

In many process operations the removal of entrained material in vapour flows is essential. DA demisters and mist eliminators provide a wide range of solutions suitable for any application.

The principal of a mist eliminator/ demister operation is based on having a large number of obstacles intercepting entrained droplets in a vapour flow. This large number of obstacles must provide minimum drop in pressure over the removal system.

Mist eliminators/ demisters are fabricated from knitted materials with interlocking asymmetrical loops of metal or plastic with typical diameters being 0.1 – 0.3mm. By careful choice of wire diameter, DA have produced demisters with extremely high free volumes (typically 98 – 99%) along with very high removal efficiency and low pressure drop.

Along with wire diameter and mesh density, another important parameter in design and operation is the vapour velocity. This can be controlled by careful selection of the eliminator area. Optimal area will depend on operating temperature, pressure and pressure drop. Under normal operating conditions 99% + removal efficiency can be achieved with a pressure drop of less than 250 Pascals.

Elimination of DA demister is dependent on droplet size:

5 – 9 micron             99%
>10 micron               99.5%

Most of the weight of entrained mist tends to be associated with the larger mist particles (larger than 5 - 10μm) thus providing greater that 99.99% weight removal.

All of DA demisters are custom made to your specification. Demisters can be breakup into smaller parts for easy installation into tight spaces. Individual drawings are also provided and documented for each of the demister units upon confirmation.

DA demisters are known among our customers for good durability. We have also a good track record for having negligible annual production errors for the past few years*.

With DA good experience in projects from desalination plants to FPSOs, you can be sure to get the best quality and durability for your DA Demisters.