Stainless steel packing mesh types, specifications, standards, characteristics, applications

Stainless steel packing mesh alias: packing mesh, foam mesh, knitted mesh, stainless steel wire mesh, stainless steel mesh, wire mesh corrugated packing.
Stainless steel packing mesh is mainly made of stainless steel tower metal wire mesh regular corrugated packing. It has the characteristics of thin wall, heat resistance, large gap, large flux, small resistance and high separation efficiency. It is especially suitable for vacuum distillation tower to handle heat-sensitive, easy to decompose, easy to polymerize and easy to carbonize materials. It is widely used as packing in packing towers in petrochemical, fertilizer, environmental protection and other industries.
Main specifications: 60 mesh 1M*30M, 50 mesh 1M*30M, wire diameter: 0.15MM/0.12MM, We can customize some special styles according to customer requirements.
Stainless steel packing mesh is stainless steel wire mesh, stainless steel woven mesh.
Stainless steel packing mesh material: SUS302, 304, 316, 304L, 316L stainless steel wire.
Stainless steel packing mesh product material: 1Cr17Ni7 (301), 0Cr18Ni9 (304), 304L (00Cr19Ni10), 1Cr18Ni9Ti (321), 316 (0Cr17Ni12Mo2), 316L (00Cr17Ni14Mo2), 309S (0Cr23Ni13), 310S (0Cr25Ni20), 317, 317L, 347, 347H 0Cr13, 1Cr13, 2Cr13, 3Cr13 stainless steel.
Stainless steel packing mesh implementation standards: GB/T423T-92, GB/T14975-2002, GB/T14976-2002, GB/T13296-91, GB/T12770-91, GB/T12771-91, ASTM A213/A213-99a, ASTN312/A312M-00b, ASTM A269-00, ASTM A511-96

Stainless steel packing mesh weaving and characteristics: plain weave, twill weave, bamboo flower weave with acid resistance, alkali resistance, temperature resistance, wear resistance and other properties.
Stainless steel wire mesh includes stainless steel square mesh and stainless steel twill mesh. Stainless steel wire mesh has the characteristics of wear resistance, heat resistance, acid resistance and corrosion resistance. Due to these characteristics, stainless steel wire mesh is used in many fields such as mining, chemical industry, food industry and pharmaceutical industry.
Performance of stainless steel packing mesh: acid resistance, alkali resistance, high temperature resistance, strong tension and wear resistance.
Stainless steel packing mesh is mainly used for screening and filtration under acid and alkali environment conditions, as mud mesh in the petroleum industry, as screen mesh in the chemical fiber industry, as pickling mesh in the electroplating industry, gas, liquid filtration and other media separation. Generally, stainless steel mesh, nickel wire and brass wire are used as materials.
The weft wires in the metal wire woven dense mesh are densely arranged, and there are five methods: plain weave, twill weave, plain Dutch weave, twill Dutch weave and reverse Dutch weave. The specifications of stainless steel mesh are 20 mesh-630 mesh. Anping County has many years of experience in wire mesh production and has many stainless steel mesh production companies. The stainless steel mesh produced has the characteristics of stable and fine filtering performance. Various types of stainless steel packing mesh products can also be designed and manufactured according to user needs.
Metal mesh corrugated packing is also known as stainless steel wire mesh packing, structured wire mesh packing, etc.
Metal mesh corrugated packing is an important milestone in the development of structured packing. It is a disc-shaped packing composed of several parallel and straight metal corrugated mesh sheets. First, small holes with a very small aperture diameter of 0.4-0.5mm are pressed out on the metal plate, and then the multi-perforated plate is pressed into corrugated sheets to assemble into structured packing. Due to the special puncture structure on the surface, the wetting performance of the packing is improved, and the performance of the metal mesh corrugated packing can be maintained. Stainless steel corrugated packing is divided into perforated plate corrugated packing, plate mesh corrugated packing, calendered perforated plate corrugated packing, wire mesh corrugated packing and ring-shaped corrugated packing.

Characteristics of metal mesh corrugated packing:
The corrugated wire mesh packing (the corrugation vertex angle is about 90 degrees, and the channel formed by the corrugation is 45 degrees or 30 degrees to the vertical direction. The flow channels of two adjacent corrugated sheets are 90 degrees, and the upper and lower plates of corrugated packing are rotated 90 degrees and stacked. In the tower with a smaller diameter connected by flanges, the corrugated packing is made into a whole disc, and the diameter is slightly smaller than the inner diameter of the tower. In the tower with a larger diameter, each plate of corrugated packing is divided into several pieces, put into the tower through the manhole, and pulled into a complete disc in the tower. The corrugated sheets of the upper and lower plates of packing are rotated 90 degrees Installation, so that the fluid is fully mixed in the tower. It has the characteristics of thin wall, large porosity, large flux, light weight, small resistance, small gas phase passage angle, regular, sufficient gas contact, good separation effect, high efficiency, low pressure drop, etc.
Application of wire mesh corrugated packing:
wire mesh corrugated packing (stainless steel corrugated packing) is a highly efficient packing widely used in countries around the world, especially suitable for vacuum distillation tower. It is mainly used in petrochemical industry, fertilizer industry, natural gas purification, smelting, etc. For example, coal chemical industry (recovery in coking plant It is used in washing towers for crude benzene), separation of ethylene and styrene, preparation of high-purity oxygen, separation of propylene oxide, debutanizers, cyclohexane recovery, gasoline fractionation, atmospheric and vacuum refining, etc. It is used as a filler in three-phase separators or two-phase separators in the process of degassing and dehydrating crude oil. It is especially suitable for treating heat-sensitive, easily decomposed, easily polymerized, and easily carbonized materials. The
metal wire mesh corrugated packing is composed of vertically arranged corrugated wire mesh strips to form a disc-shaped regular packing. The height of each disc is 40-300mm, and the corrugation direction is parallel to the tower axis. The inclination angle is 30° or 45%. The two adjacent corrugations are in opposite directions. The diameter of the packing plate is a few millimeters smaller than the tower diameter. Depending on the tower diameter, the packing plate accurately fills the tower section. The hoop on the outside of each packing plate can have a flange to prevent wall flow. The upper and lower adjacent plates are rotated 90° for filling. For small tower diameters, the packing is filled in the whole plate. For large towers with a diameter of more than 1.5m or towers without flange structures, the blocks can be installed in the tower through the manhole and then assembled. The main materials for making wire mesh corrugated packing are stainless steel, copper, aluminum, iron, nickel, etc.
The mass transfer performance of wire mesh corrugated packing is directly determined by the specific surface area of the packing. According to the specific surface area, wire mesh packing can be divided into 250 type, 500 type and 700 type. Since wire mesh packing belongs to the liquid film mass transfer type, holes are opened on the corrugated packing sheet or double-layer wire mesh packing is made to strengthen the uniform distribution of liquid on the wire mesh corrugated sheet. Especially at low spray density, whether the liquid can be evenly distributed on the wire mesh sheet to form a film is the key to maintaining high separation efficiency.
Small holes are opened on the wire mesh corrugated sheet to strengthen the uniform distribution of liquid and liquid film renewal, reduce dead corners in the packing (especially small towers), and improve separation efficiency. In order to strengthen the lateral mixing of gas and liquid, the small holes on the corrugated sheet should be 4-5mm in diameter.
In view of the geometric structure of wire mesh corrugated packing, the following characteristics are formed:
1. Large specific surface area, high porosity, and light weight. The specific surface area of 500 type packing is equivalent to 4.5 times that of Dg50mm metal ball ring (ball ring specific surface area 110m2/m3, density SSOkg/m3), while the density is only 40% of the ball ring. The porosity is high, and the wire mesh has a strong capillary effect, which makes it have excellent wetting performance. Even if the spray density is 0.2m3/(m2?h), it can achieve complete wetting, so the packing efficiency is high.
2. The gas phase passage has a small inclination angle, a regular gas phase passage, less pressure loss, and low packing pressure drop.
3. Good radial diffusion and sufficient gas-liquid contact. 4.
Avoid clogging, corrosion, and difficulty in cleaning, and can only be cleaned by chemical methods.
5. The unit volume packing is expensive, which limits its scope of use.