SP type demister pad
Demister pad, installed at the top of the packed columns, consists of several piece assembled gas-liquid filter mesh pads and support parts, and is an indispensable key component in industrial processes. It is designed to effectively separate and remove entrainment and suspended particles from gases or liquids, improve separation and mass transfer efficiency and enhance operational conditions. Additionally, it can also optimize process indicators, reduce equipment corrosion, protect the environment, and minimize air pollution.
Choosing our demister pads is a guarantee of choosing excellent performance and reliability. We offer a variety of demister pads in diverse models and specifications to meet different project and application requirements.
| Material | Products Separated | Material | Products Separated |
|---|---|---|---|
| SS304 | For nitric acid, water steam | Hostaflon PTFE | For Highly corrosive conditions |
| SS304L | For petroleum Fractions | Inconel 825 | For dilute acid media & alkaline solution |
| SS316 | For fatty acids, reduced crude | Inconel 625 | For phosphoric and fatty acid |
| SS316L | Reduced crude containing acid & other corrosive | Polypropylene | For hydrilic acid, corrosive service at moderate temperature |
| Copper | Alcohol, Aldehyde, Amines | PVDF | Corrosive Service for Temperature 140 °C |
| Monel | For caustic soda & other alkali, dilute acid | PTFE/FEP/PFA/ETFE/ECTFE | For highly corrosive and high temperature |
| Nickel | For caustic soda, food product | Hostaflon | Sulphuric acid plant, temperature up to 150 °C |
| Alloy 20 | Nitric acid, alkaline PH | Glass Wool | For very fine mists |
| Teflon FEP | For Highly corrosive conditions | – | – |
| Item | Density (kg/m3) | Free Volume (%) | Surface Area (m2/m3) | Application |
|---|---|---|---|---|
| BDP-80 | 80 | 99 | 158 | Moderate fouling, minimum press drop, dirty service |
| BDP-144 | 144 | 98.2 | 280 | Heavy duty, e.g. oil & gas separators |
| BDP-128 | 128 | 98.4 | 460 | Light fouling, high velocity, dirty service |
| Notes: Except for BDP-80, other models data is only suitable for metal materials. | ||||
According to the weave types, demister pads are divided into standard type (SP), efficient type (DP) and high penetration type (HR/HP).
SP type demister pad
DP type demister pad
HR/HP type demister pad
Split demister pad
Integrated round demister pad
Split rectangular demister pad
Irregular demister pad
Ring demister pad
Corrugated demister pad
Drawer type demister pad (plastic)
When the gas with entrainment rises and passes through the wire mesh demister pad, under the inertial effect, the entrainment adheres to the filament surface of the knitted mesh. As the entrainment diffuses and gravity causes it to settle, larger liquid droplets are formed. Eventually, when the gravity produced by the droplets exceeds the combined force of gas uplift and liquid surface tension, the droplets separate from the filament and fall off. For droplets with a diameter of 3–5 μm, the overall entrainment removal efficiency is 98% above.
It is widely used in packed columns, absorption columns and other industrial equipment to effectively remove entrainment in gases or liquids and improve the separation and mass transfer efficiency.
