Daheng Demister Pad Co. Ltd.

Anping, china, China

We are offering Ptfe (f4 or Teflon) Demister Pad. Introduction PTFE wire mesh demister is one of the best corrosion resistance demisters. It can be used with any kind of chemical medium for a long-term. PTFE demister pad is resistant to hydrofluoric acid, phosphoric acid, sulfuric acid, nitric acid, hydrochloric acid and various organic acids, organic solvent, strong oxidants, as well as a variety of other strong corrosive chemical medium corrosion. PTFE demister pad can be routinely used in temperatures between -150 ~ + 250. Poly tetrafluoroethylene is resistant to strong acids and bases and it has low pressure drop, large flux and high efficient defogging characteristics. Features of Poly tetrafluoroethylene (F4) demister pad High temperature: can be used in temperature -200 to +250 �� C Resistance to low temperature: -196 �� to maintain 5% Corrosion-resistant: resistant to acid, alkali, aquaregia, and a variety of organic solvents Insulation resistance: Dielectric properties have nothing to do with temperature and frequency High lubrication: lowest friction coefficient in solid materials In adhesion: not adhere to any substance High self-lubrication: the friction coefficient of the solid material is 0.04 Non-toxic: physiologically inert, can be implanted in the human body, resistance to aging, can be used in the atmosphere for a long time Pollution Prevention: low blank value of the metal elements, the lead content less than 10-11g / ml, the uranium content less than 10-12g / ml Leakage protection: Falling from 1.2 meters high, the bottle is not broken and the cap does not fall off and without damaging leakage phenomenon. Usage The PTFE wire has superior tensile strength, diverse specifications and easy-weaving, and other physical characteristics. Through a variety of woven ways of tetrafluoroethylene can be processed into wire mesh in different forms used in numerous fields, the most representative for: gas liquid filtration industry also known as (gas liquid filters) poly tetrafluoroethylene resin material is better than almost any known anti-vapor permeability of the plastic material. Poly tetrafluoroethylene resin material has much lower gas permeability than most of the polymers. Specifications: Top style, bottom style, DG200-DG6400 and nonstandard demister pad (defogger). If you need to consult the price, please contact the business department by e-mail: When you contact us, please provide your detail requirements. That will help us give you a valid quotation. your name * Your email * Company Name Subject message *

We are offering Fluorinated ethylene propylene is colorless and transparent, the copolymerization of tetrafluoroethylene and hexafluoro- propylene, retained full performance of the F4, has excellent chemical stability, excellent non-stick characteristics of temperature permissions below F450 ��C, forming convenient with extrusion, molding, injection molding. Fluorinated ethylene propylene (FEP or F46) Characteristics: FEP is milky white, translucent solid with the density of 2.14-2.18g/cm3, smooth surface such as wax, low water absorption, does not exceed 0.01%. Compared with the PTFE, the conventional mechanical properties are similar and toughness at room temperature and creep resistance is better than PTFE. But at elevated temperature is less than PTFE. Its mechanical properties are affected by temperature, but it still has a certain carrying capacity even at 200 ��. The friction factor is only after to PTFE, and decreases with increasing load. Chemical stability of FEP and PTFE is similar, for all of the dilute or concentrated inorganic acids and alkali it has exceptional stability. It is not affected with alcohols, ketones, hydrocarbons, halogenated hydrocarbons, aromatic hydrocarbons, grease, etc. Only at elevated temperature, it has to ration with fluorine, alkali metals and chlorine fluoridation. Carbon tetrachloride and fluorine-containing compound make FEP swell but can still recover the original shape and performance after the departure of the solvent. FEP has very excellent dielectric properties and electric insulation properties, close to PTFE, the electrical properties substantially unaffected by the influence of the electric field frequency and the environmental humidity change, which can be stable in a very wide temperature range. In addition, FEP has exceptional resistance weathering performance, excellent flame resistance and oxygen index is up to 95. The principal shortcomings of FEP are the higher melting temperature and the higher viscosity. It needs to use higher molding pressure, but melt fracture phenomenon is easy to produce in the high shear rate. In addition, the intensity of FEP production of plastic parts is minimal, but the cost is very high. If you need to consult the price, please contact the business department by e-mail: When you contact us, please provide your detail requirements. That will help us give you a valid quotation. Your Name * Your Email * Company Name Subject Message *

We are offering demister pad. I. Profile, working principle and characteristics of demister pad profile wire mesh demister (also known as mesh mist eliminator, mist, catching mist) is used for gas entrained mist separation column, in order to guarantee the efficiency of the filter, can increase productivity by 5%. The late fifties, the foreign used an apparatus which made of the special wrinkle woven mesh to remove inclusions of tiny liquid foam in the gas that such an apparatus in the study of the gas-liquid separation process and found that is very efficient, and the gas drop through the resistance of the device is very small, which is unmatched by other gas-liquid separation device, so quickly get a lot of promotion and a wide range of applications. Wire demister standard was formulated by the ministry of chemical industry in china on december 20, 1982, the basic implementation of the shanghai municipal government standards q/yszz-88-91 wire mesh industry was in 1991, began to fully implement hg/t21618-1998 national unity standard after the year 1998. The new standard demisters are divided into hg5-1404-81 riser type, hg5-1405-81 necking type and hg5-1406-81 full bore wire mesh device. Demister pad is generally set at the top of the tower, setting it, not only can ensure the mass transfer efficiency of the tray, but also to reduce the board spacing. Demister standard applicable for chemical, petroleum, pharmaceutical, light industry, metallurgy and other industrial production in the vertical cylindrical equipment vapor-liquid separation device, is currently in the imports of ethylene, ammonia and chemical fiber production equipment used demister pad, has been applied in the desulfurization, remove oil mist, toxic and hazardous industrial gases and other fields. Demister pad working principle when gas with mist rises at a constant speed through the wire mesh, due to the inertia effect, the rising mist collides with the mesh filaments and attached to the filament on the surface. Mist on the filament surface diffusion, gravity settling mist make the entrainment form larger droplets flow along the filaments of the two wire intersections. The wettability of filaments, the surface tension of the liquid and the capillary action of the filaments make the droplets grow bigger, until the droplets together to produce its own gravity exceed gas rising force and liquid surface tension force, droplets isolate from the filaments on the whereabouts. Basically it does not contain the entrainment after gas goes through the demister pad. Separate the gas in the mist, in order to improve the operating conditions, optimize process indicators, reduce corrosion of the equipment, extend equipment life, increase the amount of processing and recovery of valuable materials, protect the environment, and decrease air pollution. features simple structure, lightweight. High porosity, less pressure drops. Big surfaces area, high demisting efficiency. Easy installation, operation and maintenance. Long service life. Ii. The selected wire mesh form of wire mesh demister and domestic standards selected wire mesh form selected demister pad forms have four categories: standard type, efficient type, high-penetration type and shock absorber type. The standard type wire mesh wire size (mm) wire width tolerance (mm) bulk density (kg/m3) specific surface area (m2/m3) porosity flat wire round wire diameter +10 -0 150 475 320 0.981 0.1*0.4 0.23 note: every 100mm thick mat have 25 layers wire mesh the efficient type wire mesh wire size (mm) wire width tolerance (mm) bulk density (kg/m3) specific surface area (m2/m3) porosity flat wire round wire diameter +10 -0 182 626 484 0.977 0.1*0.3 0.19 note: every 100mm thick mat have 32 layers wire mesh the high-penetration type wire mesh wire size (mm) wire width tolerance (mm) bulk density (kg/m3) specific surface area (m2/m3) porosity flat wire round wire diameter +10 -0 98 313 217 0.9875 0.1*0.4 0.23 note: every 100mm thick mat have 20 layers wire mesh the shock absorber type type specification filaments specifications (mm) shock absorber type 33-30 type ��0.08 38-40 type ��0.08 20-40 type ��0.22 30-40 type ��0.10��0.12 30-50 type ��0.16 40-60 type ��0.12 30-80 type ��0.22 50-120 type ��0.22 40-120 type ��0.22 domestic standards wire mesh demister domestic standards are divided into hg5-1404 (1405, 1406) -81, hg/t21618-1998, hg/t21586-98 and other non-standard mesh demister. �� hg5-1404 (1405, 1406) -81 the standards are divided into the riser-type (1404), the necking (1405) and full bore type (1406). The diameter of demister is from 300mm to 6400mm and height is 100mm and 150mm. When ordering need to offer a figure number and use of the material. Mark example: hg5-1406-81-11, 304/304 it means that the gratings and wire mesh are made of 304 stainless steel, full bore coat type, diameter 1600mm, height 100mm demister pad. �� hg/t21618-1998 new standards merged riser type, reducing necking type and full bore type installation form; proposed sp, hp, dp and hr four kinds of network types and expanded the types of material selection; and increased the set specifications size interval density. sp dp hr/hp the standard wire specification: 0.1+0.03*0.4 the standard wire specification: 0.1+0.02*0.3 the standard wire specification: ��0.23 (��0.275).1+0.03*0.4mm mark example: hg/t21618 wire mesh demister s1600-100 sp 304/304 it indicates that the gratings and wire mesh are made of 304 stainless steel, coat type, diameter 1600mm, height 100mm, sp screen demister grid. �� hg/t21586-98 (drawer mesh demister device) this standard is principally applied to the demister element often needs to be cleaned or replaced occasions, for example sulfuric acid drying tower and absorber device. Its selection of nominal diameter has 56 kinds ranging from dn300mm ~ dn5000mm. When ordering simply need to provide a figure number and choice of materials (316l, ns-80 and rs-2 wire mesh material is commonly used in sulfuric acid plant). Mark example: hg/t21586.11-98 wme-1600-100 ns-80/q235-a it means that the wire mesh using the ns-80, grill carbon steel diameter 1600mm, height 100mm drawer demister pad. �� other non-standard wire mesh demister wavelike type, embedded type, external loading type, swd1 type, square, rectangular and irregular, and so on. Iii. Using method of demisters: 1, mesh block installation mesh block structures of demister pad have two types: disk-shaped mesh block and bar mesh block. it has upload type and download type two structures. When the location of the manhole opened in the above of the wire demister, or unmanned hole but equipment flange, choose the upload type wire demister; the manhole location opened in the below of it, then choose the download type wire mesh demister. 2, demister schematic iv. Maintenance: after using for some time because of the gas containing particles (such as sublimated sulfur, etc.), the wire mesh is partially clogged and prone to flooding, the pressure drop also increased, therefore, the demister pad needs for proper maintenance. During the stop of a long time, air will enter the tower body, the moisture in the air and mesh acid are easily formed sweet sour, since the metal mesh generally are intolerant to dilute acid, therefore, it needs to seize the opportunity to maintain the demister. The way of maintenance is to clean with water, but remember: to avoid the dilute acid on the demister wire mesh to affect service life, after flushing the demister pad, mesh block must be drying (in the natural state, also can in the sun). Put it inside the tower before the equipment works. Choose to use a constant efficiency or the innovative adjustable mist eliminator in the production and smelting enterprises. if you need to consult the price, please contact the business department by e-mail: when you contact us, please provide your detail requirements. That will help us give you a valid quotation. Your name * your email * company name subject message *

We are offering non ss metal demister pad. The materials of non-ss metal demister pad mainly include titanium wire, nickel wire, 904l wire, monel material. They have the features of strong corrosion resistance, excellent welding properties and processing functions. So they are used to make demister pads to separate mist. Classified material performance usage titanium wire industrial pure comprising: ta0, ta1, ta2, ta3, and other grades, titanium material can be provided in various concentrations of nitric acid, organic acids, chlorides, wet chlorine and alkali, there is a strong corrosion resistance. The titanium material has excellent corrosion resistance, mechanical properties and industrial performance. It is mainly used as corrosion-resistant materials. Nickel wire pure nickel is a silvery white metal with excellent corrosion resistance, high performance electric vacuum and electromagnetic control performance, excellent welding performance and processing properties. Nickel in the seawater, salt solution and the organic medium (such as fatty acids, phenols, alcohols, etc.) at room temperature are extremely stable. It is not stable in the acetic acid, acetic acid and intolerant inorganic acid corrosion. Particularly suitable for the manufacture of equipment to handle lye, mainly prepared for caustic soda industry, widely used in chemical, mechanical, electronic, food. 904l material 904l has good activation - passivation conversion capability, having a very good corrosion resistance in a non-oxidizing acid such as sulfuric acid, acetic acid, formic acid and phosphoric acid. In neutral chlorine ions medium it has good pitting corrosion resistance, good resistance to crevice corrosion and stress corrosion resistance. Applies to resistance to any concentration below 70 �� various concentrations of sulfuric acid at atmospheric pressure, any temperature of acetic acid and formic acid and acetic acid mixture in the corrosion resistance is also very good. The scope of 904l used in the oil and petrochemical equipment, sulfuric acid stored in the transportation equipment, organic acid processing system in the scrubber and fan, the pharmaceutical plant reactor of the centrifuge, the water treatment apparatus, the paper industry, other fields and industries. Monel monel alloy is a nickel metal added as the matrix alloy made of other elements such as copper, iron, manganese and so on. It has good corrosion resistance, and it is silvery white. In the fluorine gas, hydrochloric acid, sulfuric acid, hydrofluoric acid, as well as their derivatives it has very good corrosion resistance. It has good corrosion resistance in salt and the molten salt. Monel alloy also has good mechanical properties and weld ability. Broadly used in the chemical and other industries, for example for manufacturing heaters, heat exchangers, evaporators, distillation kettle, distillation column, fatty acid-treated in a condenser, process acid with rosin kiosk equipment. Since the alloy has high strength and good oxidation resistance at high temperatures, therefore, it also is used for the heat treatment industry, the manufacture of various structural parts as well as the important structural materials for a light-water reactor nuclear power plant. if you need to consult the price, please contact the business department by e-mail: when you contact us, please provide your detail requirements. That will help us give you a valid quotation. Your name * your email * company name subject message *

The materials of stainless steel demister pad include stainless steel 304, 304l, 321, 316, 316l and 310 material. They can continue to work in a high-temperature environment, and have good resistance to oxidation and corrosion resistance. material features usages 304 ss304 is produced in accordance with the american astm standard stainless steel grades. It is a very versatile stainless steel containing 19% chromium and 9% nickel. 304 is a stainless steel, the most widely used heat-resistant steel. Ss304 is widely used for the production requirements of well-integrated equipment and parts (corrosion resistance and formability). It is used for food production equipment, the past through chemical equipment, nuclear, etc. 304l 304l is low carbon 304 stainless steel variants, lower carbon content makes minimize carbide precipitated in the heat affected zone close to the weld, while the carbide precipitation may cause the stainless steel in some environments intergranular corrosion (welding erosion). Used for the occasion requires welding 321 ss321 has excellent high temperature stress rupture performance and the performance of high-temperature creep resistance. Stress of mechanical properties is better than the 304 stainless steel. Ss321 at different concentrations and different temperatures of organic and inorganic acids, especially in the oxidizing medium having a good corrosion resistance, is used for the manufacture of the lining wear acid container and wearable devices, pipelines. 321 stainless steel is mainly used in anti-grain boundaries require high corrosive chemical, coal, petroleum industry open field machinery, building materials heat-resistant parts and heat treatment of the tricky parts. 316 due to the addition of mo, its corrosion resistance, resistance to atmospheric corrosion and high temperature strength is particularly good, can be used in the harshness of the conditions; the work hardening gifted (non-magnetic). Used in sea, photographic equipment, chemicals, dyes, paper, oxalic acid, fertilizer and other production equipment, food industry, coastal facilities, rope, cd rods, bolts, nuts. 316l 316l is a molybdenum-containing stainless steel. Because of containing molybdenum, the overall performance of the steel is better than the 310 and 304 stainless steel. In hightemperature conditions, when the concentration of sulfuric acid less than 15% and higher than 85%, 316l stainless steel is extensively used. It has exceptional resistance to pitting, excellent high-temperature creep strength. 316l stainless steel has a good resistance to chloride erosion performance. Chiefly for pitting corrosion-resistant material. 310 ss310 is austenitic chromium-nickel stainless steel having good resistance to oxidation and corrosion resistance, thanks to a higher percentage of chromium and nickel. The 310 is made of high-alloy materials that have high temperature oxidation resistance. Ss310 has a much better creep strength. At elevated temperatures, it can be sustained operation and has a good temperature resistance. Principally used for the high-temperature steel. if you need to consult the price, please contact the business department by e-mail: when you contact us, please provide your detail requirements. That will help us give you a valid quotation. your name * your email * company name subject message *