In the process of dust removal, as dust-laden gas particles flow through the dust collector, the dust particles are captured on the outer surface of the bag, while the clean gas passes through the filter media into the bag. The dust cage inside the dust collector bag provides support, prevents bag collapse, and aids in the removal and redistribution of the dust cake. Post-treating the dust bag is crucial for certain special working conditions. The post-treatment procedures are categorized as follows: 1. Singeing and calendering treatment This treatment mainly involves exposing the fabric surface above the conveyor to fire, burning off lint, and then using high-temperature rollers to iron the fabric surface, making it smooth and easier to remove ash. This not only enhances the filter media's ash cleaning performance but also enables the collection of fine dust. Singeing and calendering treatment Explore our product page to discover the material supply range of dust filter cloth: ↓ ↓ ↓ ↓ ↓ PTFE / PPS / Nomex / Polyester / Acrylic / Fiberglass / FMS / Polyamide 2. Antistatic treatment Some types of dust can easily ignite when exposed to sparks in certain concentrations. Therefore, flammable or explosive dust requires anti-static treatment using needle felt filter media. Anti-static filter media incorporates conductive fibers or conductive yarn woven into the filter media to impart overall conductivity. This enables static electricity to flow through the filter media, guiding it to the dust collector box and grounding, thereby preventing explosions caused by static sparks. Antistatic treatment 3. Water and Oil - proof treatment The needle-punched felt filter media is treated with fluorocarbon resin and PTFE, making the surface of the filter bag hydrophobic. This creates a lotus leaf-like effect, causing water droplets to roll off the fabric surface, enhancing dust trapping and preventing issues like bag sticking and corrosion caused by dew in situations with significant temperature differences. Water and Oil - proof treatment Interested in knowing which international customers Yuanchen Technology has? Browse our project case page to learn about the distribution of some of our customers. ↓ ↓ ↓ ↓ ↓ Overseas projects The surface of the filter bag is made hydrophobic, allowing water droplets to roll off the fabric. This facilitates effective dust capture and minimizes problems such as bag sticking and corrosion resulting from dew formation in conditions of significant temperature variation. 4. Easy clear ash treatment Generally, the mirror treatment or the addition of a fine denier fiber surface layer needled onto the fabric enhances its dust cleaning performance and enables it to withstand higher filtration wind speeds for extended periods. 5. PTFE lamination treatment PTFE (Polytetrafluoroethylene) lamination treatment is a process in which a layer of PTFE is applied to the surface of a material or substrate. PTFE is a synthetic fluoropolymer known for...

The fabric design of dust filter bags should prioritize high efficiency filtration, easy dust stripping, and durability. Dust filter bags are crucial components in dust collectors. The selection of dust filter bags depends on factors such as the nature of the dust, dust cleaning method, and dust gas composition, thus requiring different considerations. 1. According to the requirements of the working conditions to choose the cost performance of the appropriate dust filter bags. 1.1 Gas temperature. Gas temperature below 130 ℃ choose room temperature dust filter bag, temperature between 130 ℃ -260 ℃ choose high temperature dust filter bag. 1.2  Gas humidity. Dust-containing gas is divided into three states according to the relative humidity: dry gas (relative humidity below 30%), general state (relative humidity between 30%-80%) and high humidity gas (relative humidity of 80% or more). When the gas humidity is high, you should choose a laminated waterproof cloth bag. 1.3 The chemical nature of the gas. In a variety of furnace flue gas and chemical waste gas, often containing acids, alkalies, oxidizers, organic solvents and other chemical components. Where to choose the filter bag should be based on the chemical composition of the flue gas contained in a reasonable selection of acid-resistant alkali-resistant antioxidant dust filter bag. 2. According to the special nature of dust selection of dust filter bags. 2.1 Dust wettability and adhesion: for hygroscopic and strongly adhesive dust, it is recommended to select a dust filter bag with waterproof laminated filter media. 2.2 The combustibility and charge of the dust: If the dust is flammable, it is recommended to choose a dust bag with flame retardant properties. Anti-static dust filter bags are specifically designed for dust with electrical charge. 3. According to the dust collector cleaning way to choose dust filter bags. 3.1 Mechanical vibration-class bag filter: It is necessary to choose a dust filter bag with a thin and smooth filter material and a soft texture, which facilitates the transfer of vibration waves. 3.2 Reverse air cleaning bag filter: Select a filter bag with a soft texture, stable structure, and good wear resistance. 3.3 Pulse bag filter: Typically utilizes cylindrical filter bags with a frame. It is important to select thick, wear-resistant bags with strong tensile strength. You can directly consult our sales engineers for free consultation services regarding your dust filtration projects. ↓ ↓ ↓ ↓ ↓ Contact us now! Founded in 2005, Yuanchen Technology focuses on technology development and application in the field of environmental protection, pioneering and innovating in industrial flue gas filtration, denitrification, circular economy, intelligent environmental protection, etc. It is committed to the frontier of industry technology and promotes the integration of new business models in the environmental protection industry, and is an enterprise with the qualification of R&...

The cement production process produces a large amount of dust with high temperature, high humidity and corrosive gas, and the dust concentration is high and the temperature fluctuates widely, only the glass fiber filter material with high temperature resistance, corrosion resistance and anti-condensation can meet the needs of cement industry dust removal. In the process of cement production, the chemical composition, physical properties and working conditions of the flue gas dust at different dust raising points are different; secondly, the filtration method, dust cleaning method and filtration air speed of bag filter in different forms are very different. The glass fiber filter material has been researched and developed for decades, and its types are increasing and more specialized and targeted. Only according to the actual use point of the working conditions, choose the appropriate filter media, in order to meet the needs and play the role. This paper briefly describes the basic performance of glass fiber filter materials, introducing several typical examples of application. 1. The basic performance of glass fiber filter materials 1.1 The material of glass fiber filter material Glass fibers can be divided into two categories in terms of their alkali metal oxide content in the glass composition, alkali-free glass fibers (E - fiberglass) and medium alkali glass fibers (C - fiberglass). The difference in alkali metal oxide content affects the production process of glass fibers and determines the performance of glass fibers and their products. Alkali-free glass fibers can be produced with a single fiber diameter of 8 to 9μ. The difference in fiber diameter, woven into the same thickness of glass fiber cloth, the strength, wear resistance, folding and other properties vary greatly. Different glass fiber material will affect its use temperature, alkali-free glass fiber filter material can be used for a long time at a temperature of 280 ℃, instantaneous (within 1 hour) temperature resistance of up to 350 ℃, while the use of medium alkali glass fiber filter material temperature is only 260 ℃, instantaneous temperature resistance of 300 ℃ or less. 1.2 The fabric structure of glass fiber filter material Glass fiber filter material permeability, filtration efficiency are closely related to its fabric structure, fabric structure is divided into three categories: twill, satin, weft two heavy. In the dusty flue gas, the same fabric structure, the permeability of glass fiber expanded yarn filter material is higher than that of continuous glass fiber filter material, and the permeability of glass fiber needle-punched felt material is the highest. 1.3 The thickness of glass fiber filter material Glass fiber filter material thickness (sometimes measured by the mass per unit area) will determine the fracture strength of this filter material and the filtration air speed used, and will also determine the radial fracture strength of alkali-free continuous glass fibe...

Dust filter bags play an important role in modern industrial development and are widely used in atmospheric dust environmental protection processes in the food, chemical, biomass power, and pharmaceutical industries. PTFE dust filter bags are gradually becoming familiar to process personnel because of their excellent performance under certain harsh operating conditions. Below we analyze the excellent performance of PTFE dust filter media from several angles. High temperature resistance: PTFE (polytetrafluoroethylene) fiber is today's excellent chemical performance, anti-hydrolysis, anti-oxidation ability of the fiber. PTFE has excellent high and low temperature performance, melting point 327 ℃, instant temperature resistance can reach 300 ℃; PTFE fiber also has good filtration efficiency and ash cleaning performance, good flame retardancy, low resistance, long service life, but the price is expensive. Material performance: PTFE needle punching felt dust bag is a filter material made by needle punching PTFE fiber + PTFE scrim cloth. The bags have strong temperature, wear, corrosion and chemical resistance, high filtration efficiency, low operating resistance and long service life, and are widely used in various harsh flue gas filtration environments such as steel, electric power and waste incineration. Production process: no other raw materials and additives can be added to the filter media in the production process, and the needle-punched felt and PTFE microporous film are laminated together through a special process of thermal lamination, with a smooth surface, high dust stripping strength, easy ash cleaning, and a filtration efficiency of 99.99%. It is widely used in electric power, waste incineration, municipal waste dust collection, chemical dust removal and other harsh working conditions. Material recovery: In the material recovery process with price, PTFE filter bag also has excellent performance, because of its stable macromolecular structure fiber, chemical and material performance is extremely stable, can be used in the food, pharmaceutical, precious metals industry in the material recovery process. Medical waste incineration: waste treatment incineration facilities discharge gas containing dust NOX, SOX, HCL, CO and dioxins and other components, the emission of these substances the country has also developed some corresponding standards and regulations to limit the emission of substances emission standards. For waste incineration industrial and mining flue gas composition, we in the selection of dust bag material mainly consider the following factors: high temperature resistance, acid and alkali resistance, corrosion resistance, oxidation resistance, etc.. In addition, because the flue gas humidity of waste incineration power generation is relatively large, the ability to resist hydrolysis is also a necessary condition that must be considered in the selection of filter media material. Lithium new energy industry: lithium new energy indu...

Static electricity is a natural phenomenon that is very common in the manufacturing process as well as in our personal lives. Static electricity is generated by the excitation of electrons or ions between the surfaces of two substances after friction with the detachment of the contact surfaces. Coehn (Coehn) that: If two objects are in contact, the high dielectric constant is positively charged and the low dielectric constant is negatively charged, i.e., electrons move from the surface of the object with high dielectric constant to the surface of the object with low dielectric constant and a contact potential difference occurs, forming a double electric layer at the interface. The amount of charge at this point is proportional to the difference between the dielectric constants of the two objects:; however, in practice, even the same material, due to differences in its surface morphology, crystallinity and impurities, etc., electrostatic phenomena can occur. 1. The mechanism of electrostatic generation in the textile filter dust system ① Filter material is often polymer non-woven, when the fiber particles and pipeline or filter material to produce intense and frequent friction and collision, thus generating strong static electricity; ② dust-containing airflow into the work area is not charged, when the dust-containing airflow of fiber particles and filter particles produce intense tangential collision, so that between the two produce electron exchange, that is, the generation of electrostatic, that is, the generation of gas current;; 2. The harm of static electricity on the filter media After the object is charged, static electricity always has to be released. There are two ways to release the charge: one is the natural escape, the second is a different form of discharge. Electrostatic discharge is the process of conversion of electrical energy into heat, and may produce electric sparks, which in turn become a fire or detonation of the source of fire. 3. Anti-static working mechanism (1) theoretically speaking, the current more advanced anti-static treatment methods are divided into two categories: ① fiber surface coating method: the fiber finishing, so that the fiber surface attached to a layer of conductive layer; ② Internal infiltration method: conductive ions are used to infiltrate into the surface of the fiber to make the fiber conductive. (2) antistatic working principle generally according to the following role: ① smoothing effect: the presence of antistatic oil on the surface of the polymer has a smoothing effect, through the smoothing effect can reduce friction, thereby reducing the static electricity generated by friction. ② conductive effect: most of the antistatic oil agent is ionic and polyoxyethylene type non-ionic surfactants. The former conducts electricity through active ions or even metal ions, so that the electrostatic generated by friction quickly escape and no longer gather electricity; the latter due to the hygroscopic effect...

PTFE filter bag is in the needle felt filter material is attached to the surface of another layer of PTFE microporous sheet plastic film, so also known as PTFE laminated dust filter bag. This kind of plastic film is through the technical professional filter material laminating machine hot melt molding, it is proportional, and the porosity is very fine, the diameter is about 0.05μm ~ 3μm, equivalent to the general dust bag of the original soot layer, can shield the soot. PTFE dust bag not only has the characteristics of the general PTFE filter material, and has a more detailed, higher ash removal efficiency, ash removal rate can reach 99.99%, can be said to be infinitely close to 100%, most can be said to have long maintained zero emissions. Its discharge concentration value can be completely reduced to within 10mg/Nm3. PTFE laminated dust bag filtering fume and dust generally in two ways: 1. Surface filtration: the soot is blocked at the surface layer of the dust removal bag. 2. Deep filtration: according to the dust bag itself in the middle of the gap between the chemical fibers to carry out filtration, so that the soot is very easy to place inside the filter bag. The general filter bag is to carry out deep filtration, while the laminated filter material is surface filtration. We provide customized dust collector bags to meet the needs of our customers for different working conditions.