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.

The process of desulfurization is to make slurry of alkaline desulfurizer and mix it with boiler flue gas, SO2 becomes acid when it meets water and reacts with alkaline desulfurizer to produce CaSO4, etc. Denitrification The principle of denitrification is similar to that of desulfurization, except that the denitrifying agent is replaced by ammonia or urea. I. SCR technology(Selective catalytic reduction technology): mainly using NH3, urea, etc. as reducing agents, selectively reducing NO2 to non-toxic and harmless products N2 and H2O over an appropriate catalyst. N2+O——>NO+N N2+O2——>NO+O N+OH——>NO+H II. Ozone oxidation technology: the integrated technology of desulfurization and denitrification, which utilizes the strong oxidizing property of O3 to oxidize the insoluble NOx in flue gas into NO2, NO3 and N2O5 which are easily soluble in water, and is absorbed by the subsequent system together with SO2 in the spray tower by alkali solution. NO2+H2O——>HNO3+NO N2O5+H2O——>HNO3 NO+NO2+2NaOH——>2NaNO2+H2O III. Plasma technology: plasma treatment of SO2 and NOx in flue gas is a dry desulfurization and denitrification technology that uses activated oxidation that generates high-energy electrons to generate ammonium sulfate and ammonium nitrate from the oxides of SO2 and NOx in flue gas with the addition of NH3.

Different industries and factories use different dust removal filter bags. First of all, we have to analyze which bags are commonly used. The materials of dust removal filter bags include normal temperature type cloth bags, medium temperature type cloth bags, and high temperature filter cloth bags. Different types of cloth bags have different characteristics. Normal temperature type cloth bag: The main material of normal temperature type cloth bag is made of polyester, polypropylene, acrylic and other fiber materials through non-woven and textile technology. Medium temperature type cloth bag: The medium temperature filter material includes aramid fiber and PPS series fiber through impregnation, waterproof, oil-proof and anti-corrosion process, so as to achieve the ideal filtering effect. High temperature cloth bag: The high temperature cloth bag is mainly made of high temperature resistant fiber materials such as P84, expanded glass fiber, and ultra-fine glass fiber. The use of dry filter bag dust removal technology in blast furnaces has been successful in purifying gas, and the over 5,000 cubic meters of extra-large blast furnace gas in Shougang, Wuhan Iron and Steel and Baosteel all use dry pulse filter bag dust removal technology for operation. The blast furnace gas is dry purified by the filter bag dedusting technology, which replaces the previous two-stage venturi wet dedusting technology. Its outstanding advantages are that it can save 30% of the total investment, save 50% of land, save 200kg/t iron, save more than 70% of electricity, and greatly improve the quality of gas after the water content and dust content are greatly reduced, which can be used for power generation. Or other use, the thermal efficiency is significantly improved. It can also reduce the number of workers and greatly reduce the amount of soot and waste water. If the blast furnace gas is purified by the dry filter bag dust removal technology, it will save more than 80 million tons of water and reduce nearly 80 million tons of wastewater discharge. The dust filter bag configured by the bag filter used for blast furnace gas purification is made of Nomex needle-punched felt in foreign countries. In China, high temperature resistant dust removal filter bags made of glass fiber and aramid fiber are used.

1. First disassemble the dust filter bag. 2. Put the dust filter bag into the hole of the cell plate. 3. Flatten the bayonet to the hole of the cell plate. 4. Bend the bayonet inward. 5. Align the bayonet slot with the cell plate hole. 6. Adjust the position of the bayonet. 7. Press the bayonet to confirm the position. 8. The dust filter bag is installed in place. 9. Insert the bag cage of the dust filter bag.