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Mesh mist eliminators or pads are made by knitting wire, metal, or plastic into tightly packed layers, which are then crimped and stacked to achieve the required pad thickness.
Mesh pads remove liquid droplets by impingement of droplets onto
the wires, followed by coalescence into droplets large enough to
disengage from the bottom of the pad and drop through the rising
gas flow into the liquid holding part of the separator. The
prominent mechanism for droplet capture is inertial impaction. The
capture efficiency for a conventional mesh mist eliminator, at a
given droplet size, is a function of the wire or fiber total
thickness, mesh density, and wire diameter, as well as the
properties of the fluids to be separate more efficient.
Wire mesh demister is mainly composed of wire mesh, wire mesh grid, wire mesh block and supporting device for fixing wire mesh block. The wire mesh is a gas-liquid filter of various materials, and the gas-liquid filter is composed of metal wire or non-metal wire. The non-metallic wire of the gas-liquid filter screen is twisted by multiple strands of non-metallic fibers, and can also be a single strand of non-metallic wire. The wire mesh demister can not only filter the large liquid foam suspended in the air flow, but also filter the small and micro liquid foam. It is widely used in gas-liquid separation devices in chemical industry, petroleum, tower manufacturing, pressure vessel and other industries.
Wire mesh demister can be made of various materials, depending on its use, and its major materials are as per the below:
1). SUS302, SUS304, SUS304L, SUS316, SUS316L, SUS321, SUS309, SUS310S, SUS202, NS-80.
2). Monel, nickel, titanium.
3). Plastic (PP, PC,PE,PVC,PTFE).
4). Mild Steel (plain and galvanized).
5). Nylon yarn and glass fiber.
6).Aluminium, copper and brass.
What is the treatment of organic wastewater by knitted mesh demister?
1.Organic wastewater has many kinds, high toxicity, complex
components, high chroma and strong acidity and alkalinity.
Therefore, not all organic wastewater can be treated by resin
adsorption method, or only by resin adsorption method can be
discharged up to the standard. However, it often needs to be
combined with other treatment methods for hierarchical treatment to
achieve satisfactory results.
2.The strength and durability of the adsorption resin need to be
improved so that it can be used continuously for 4-5 years, further
improving the performance-price ratio of the macroporous resin.
3.The treatment process of organic wastewater by macroporous resin
adsorption method is relatively complex, so it is necessary to
further simplify the process, and recycle or completely harmless
treat the organics desorbed from the resin to reduce environmental
pollution.
4.At present, the demister pads use macroporous adsorption resin to
treat waste water, and mostly uses the stacked adsorption column
structure. Multiple parallel and reversing adsorption beds should
be used to replace the adsorption column structure, further
strengthening the standard of adsorption equipment and adsorption
resin, and creating conditions for the popularization and
application of this technology.
In short, before the treatment of organic wastewater, it is
necessary to carry out specific, comprehensive analysis and
in-depth and detailed research on each kind of wastewater, and then
formulate effective, economic and feasible treatment methods and
process routes. If the resin adsorption method can not make the
high concentration organic wastewater meet the discharge standard,
the resin adsorption method can be used to reduce the
concentration, and then other processes can be used for subsequent
advanced treatment with good results.