As an important support for my country's economic development, the impact of industrial development on the economy is indispensable. However, the ensuing environmental pollution problem is also very serious. The development of my country's industrial economy is the main driving force for the rapid development of the national economy, and the environmental pollution caused by it is also a major part of my country's environmental pollution. Its emission sources are mainly concentrated in several major areas such as coal-fired power stations, cement furnaces, and iron and steel metallurgy. The industrial flue gas emitted by these industries not only contains a large amount of harmful gases, and is accompanied by smoke and high temperature, but also with a large amount of particulate matter. And viruses and bacteria. These suspended matter will enter the body along with human breathing, causing physical damage. For the filtration of industrial flue gas, bag dust removal technology is used, and its filtration efficiency can reach 99%. However, if it is to further improve the filtration efficiency, it encounters a bottleneck and fails to meet the stringent requirements for industrial flue gas emissions.   Based on this, many universities, enterprises and scientific research institutes currently use electrospinning technology to prepare nanofiber membranes, and use mature coating technology to attach the nanofiber membranes to the substrate filter material to filter conventional particles + The double-effect filter material that electrostatically adsorbs fine particles improves the filtration efficiency; the principle of the electrostatic spinning technology is as follows: A high-voltage electrostatic field is formed between the spinneret of the liquid feeding device and the grounded receiving device. This high-voltage electric field will form an instantaneous electrostatic difference between the spinneret and the receiving device, causing the high polymer solution at the spinneret to melt or melt. The body is charged and overcomes its own viscoelastic force and surface tension to form charged hemispherical droplets at the spinneret. As the voltage increases, the hemispherical droplets do not stretch into a cone with a certain angle. This is the currently recognized Taylor cone. , Its angle is 49.5°. When the electrostatic field force is increased enough to overcome the surface tension of the charged droplets, the vertebral body is further stretched to form a continuous jet. In the electrospinning process, the droplets usually have a certain static voltage and are in an electric field. Therefore, when the diameter of the jet continues to decrease, spiraling, whiplashing, and splitting occur at the same time to finally form nano- or sub-micron fibers. With the volatilization of the solvent and the solidification of the solute or melt, it will eventually fall on the receiving device to form fibers. The prepared nanofiber has the advantages of low res...

Acrylic dust-removing cloth bag fiber is made by copolymerizing 100% acrylonitrile as the first monomer and spinning it through wet or dry spinning. It melts when close to the flame, melts and burns when it comes into contact with the flame, and continues to burn and emit black smoke when leaving the flame. There will be a scorching smell when burning. broken. (1) The shape of the acrylic dust bag: its longitudinal surface may have a few grooves, and the cross-section varies with the spinning method. The cross-section of the fiber for dry spinning is dumbbell-shaped, and the cross-section for wet spinning is round. (2) Strength and elasticity of acrylic dust bag: Its strength is 17.6～30.8cN/tex, which is lower than polyester and nylon, and its elongation at break is 25%～46%, which is similar to polyester and nylon. Acrylic fiber is fluffy, curled and soft, and has good elasticity, but the residual deformation after multiple stretches is large, and the shape retention of the fabric is not good. (3) Hygroscopicity of acrylic dust bag: The acrylic fiber has a compact structure, low moisture absorption, and the moisture regain rate is about 2% under general atmospheric conditions. (4) Light resistance of acrylic dust bag: Acrylic fiber has excellent light resistance and weather resistance, which is the best among common textile fibers. Acrylic fiber is exposed to outdoor for one year, its strength is only reduced by 20%, so acrylic fiber is the most suitable fabric for outdoor use. (5) Acid and alkali resistance of acrylic dust bag: it has good chemical stability, acid resistance, weak alkali resistance, oxidant resistance and organic solvent resistance. But acrylic fiber will turn yellow in lye, and macromolecules will break. (6) Other properties of acrylic dust bag. It has good heat resistance, but poor abrasion resistance and poor dimensional stability. The relative density of acrylic fiber is relatively small. The working temperature of acrylic dust bag is ≤150℃, and the instantaneous temperature is ≤180℃. 

Acrylic needle-punched felt dust-removing cloth bag, the chemical name is polyacrylonitrile, it is used as raw material to make felt by needle punching method, and then through special water repellent treatment to obtain acrylic medium-temperature hydrolysis-resistant needle-punched filter felt, instant working temperature: 160℃, Normal work is 140°C. It is woven with imported fiber, which is a medium temperature material with good acid and alkali resistance and hydrolysis resistance. Needle felt uses acrylic woven fabric as the base fabric to enhance vertical and horizontal strength. It has excellent chemical resistance and hydrolysis resistance, and is widely used in dust collection for waste incineration, asphalt, dryers, coal mills, power plants and other flue gas. Acrylic fiber needle-punched filter felt dust bag material is imported from abroad. It is a high-performance fiber with excellent heat resistance and corrosion resistance in the medium temperature field. It has flame retardant properties. Compared with ordinary acrylonitrile dust bag, it has higher temperature resistance characteristics. Its continuous working temperature is 130℃, which is better than polyester (polyester) or other acrylonitrile fibers with better resistance to alkali and SO2, O2 , O3 and other gases corrosive. This acrylic dust-removing cloth bag shows good resistance to organic solvents, oxidants, inorganic and organic acids when the temperature is lower than 125. It is not hydrolyzed, so it is particularly important to replace polyester (polyester) needle-punched felt filter bags with finished products in low temperature, chemically corroded and humid places. The medium-temperature acrylic needle felt dust-removing cloth bag is a plain weave base cloth with a layer of short fibers, the needle is used to vertically move the cloth surface up and down, and the fibers are pierced into the seam of the base cloth yarn with a needle. The base cloth Spread more than two fiber layers on both sides, repeatedly needling to form, and then

Anhui Yuanchen Environmental Protection Technology Co., Ltd. is an enterprise that has both high-efficiency dust removal filter materials and SCR denitration catalyst research and development, design, production, and waste catalyst recovery and regeneration qualifications. Among them, our main business-high-efficiency dust removal filter bags, are mainly divided into high temperature filter bags and low temperature filter bags according to environmental conditions, including polyester normal temperature filter bags, acrylic normal temperature filter bags, PTFE high temperature filter bags, TP high temperature composite filter bags And flumesi high temperature filter bag, etc. These high-efficiency dust filter bags are the heart of the bag filter, and play a decisive role in the effect of the bag filter. The bag filter is a dry filter device. It is suitable for capturing fine, dry, non-fibrous dust. The filter bag is made of woven filter cloth or non-woven felt, and the dust-containing gas is filtered by the filtering effect of the fiber fabric. When the dust-containing gas enters the bag filter, the dust with large particles and high specific gravity will be affected by gravity. The effect settles down and falls into the ash hopper. When the gas containing finer dust passes through the filter material, the dust is blocked, so that the gas is purified. The body structure of the bag filter is mainly composed of an upper box body, a middle box body, a lower box body (ash bucket), ash cleaning system and ash discharge mechanism. When the dust-laden gas enters the ash hopper from the inlet pipe of the lower part of the dust collector through the deflector, the coarse dust will fall into the ash hopper due to the collision of the deflector and the reduction of gas velocity, and the remaining fine particles will follow. The gas enters the filter bag chamber. Due to the inertia, diffusion, barrier, hooking, static electricity and other effects of the filter material fiber and fabric, the dust is trapped in the filter bag, and the purified gas escapes out of the bag and is discharged through the exhaust pipe. The dust on the filter bag is removed by spraying pulse airflow, so as to achieve the purpose of dust removal. The removed dust falls into the ash hopper and then is discharged by the ash discharge device. Compared with electrostatic precipitator, the bag filter is cheaper to manufacture, has no requirements on the nature of the dust, and the dust removal efficiency can reach more than 99%. The bag filter has the following characteristics: 1. The dust removal efficiency is high, up to 99% or more. 2. It has strong adaptability and can handle different types of particulate pollutants. 3. The operation is stable, and the dust concentration of the inlet gas changes greatly, which has little effect on the dust removal efficiency. 4. Simple structure, flexible use, easy to recycle dust. The bag filter can be used in coal-fired power generation industry, w...

The emission of major smoke pollutants in the non-electricity industry remains high and difficult, which has become the focus of air pollution control and the key to improving regional air quality. The iron and steel industry is one of the key industries for the prevention and control of air pollution. The entire process of iron and steel smelting includes coking, sintering, ironmaking, steelmaking and steel rolling. The sintering and coking processes mainly produce exhaust gas such as smoke, dust and NOx. The Ministry of Ecology and Environment issued the "Opinions on Promoting the Implementation of Ultra-Low Emissions in the Iron and Steel Industry". Existing steel companies and boilers in use will implement special emissions of sulfur dioxide, nitrogen oxides, particulate matter and volatile organic compounds from October 1, 2018. Limit: Existing enterprises in "2+26" cities should take effective measures to reach the special emission limit of air pollutants within the prescribed time limit. The main goal is to achieve ultra-low emission levels in principle for new steel projects (including relocation) across the country, and to promote ultra-low emission transformation of existing steel companies. By the end of 2020, significant progress will be made in the ultra-low emission transformation of iron and steel enterprises in key regions, and we will strive to complete the transformation of about 60% of the production capacity. The transformation is basically completed, and the country strives to complete the transformation of more than 80% of the production capacity. The biggest difficulty in flue gas management in the iron and steel industry is denitrification. After the nitrogen oxide emission limit of the iron and steel industry is increased from 300mg/Nm3 to 50mg/Nm3, many enterprises are unable to meet the standard and urgently need treatment and transformation. After nearly two years of market practice and selection, SCR denitration technology has gradually occupied the mainstream of the denitration market in the iron and steel industry, and the market has huge room for growth. With the country’s requirements for ultra-low emissions of iron and steel and the continuous advancement of ultra-low emissions, it is estimated that the scale of the future steel sintering air treatment dust removal and denitrification construction project will reach 40.32 billion yuan, including new denitrification projects, renovation denitrification projects and renovations The scale of the dust removal project will reach 33.6 billion yuan, 4.32 billion yuan and 2.4 billion yuan respectively.

Glass fiber is an inorganic non-metallic material with excellent performance. Its main components are silicon dioxide, aluminum oxide, calcium oxide, boron oxide, magnesium oxide, sodium oxide, etc., with high tensile strength and low elongation (3%) ; High elasticity coefficient, good rigidity; large elongation within the elastic limit and high tensile strength, so the impact energy is absorbed; inorganic fiber, non-combustible, good chemical resistance; low water absorption; dimensional stability, heat resistance Good properties; good processability, and can be made into products of different forms such as strands, bundles, felts, and woven fabrics.