The LMC series long-bag spray large-scale bag dust collector adopts negative pressure operation and external filtration. The filter bag is fixed on the flower plate on the upper part of the dust collector through a sealed elastic bag mouth, and a bag cage is installed inside the filter bag Open the filter bag. During normal operation, the air flow shut-off valve is in the open state, and the dust-laden gas enters the filter chamber under the action of negative pressure, passes through the filter bag, and enters the filter bag after filtering. The clean gas enters the clean air chamber through the outlet of the filter bag. The air flow cut-off valve enters the air outlet flue and is discharged out of the machine; the dust is trapped on the outer surface of the filter bag. Due to the support of the bag cage, the surface of the filter bag is partially absorbed and collapsed. With the extension of the filtering time, the dust on the outer surface of the filter bag As the thickness increases, the pressure difference between the inside and outside of the filter bag gradually increases. When the pressure difference and the thickness of the dust reach a certain value, the pulse valve on the air bag sequentially injects compressed gas into the filter bag through the injection pipe, and the filter bag changes from a collapsed state to an outer drum instantaneously The deformation of the state makes the dust on the surface of the filter bag clear, fall into the ash hopper, and discharge the dust out of the machine through the ash discharging device.

The technical performance of the bag filter is mainly reflected in the processing air volume, outlet dust concentration, equipment resistance and the service life of the filter bag.   (1)Processing air volume The low-pressure pulse bag filter can process dust with a larger air volume, thereby reducing the filtering area, miniaturizing the equipment and saving investment. In the case of satisfying the dust removal object, the appropriate filter wind speed can be determined according to the dust removal method, the nature of the dust, and the material of the filter bag. (2)Dust concentration at the outlet Low-pressure pulse bag filter has high dust removal efficiency, and the dust concentration at the outlet can fully meet the national emission standards, even below 10mg/m3. (3)Equipment resistance The resistance of the dust collectorΔP is proportional to the power of the fan, which is an indicator directly related to the energy consumption of the fan, and involves the operating cost of the dust removal system. The resistance of the dust collector is related to many factors such as the structure of the device, the type of filter material, the nature of the dust, the method of dust removal, the filtering wind speed, the gas temperature, and the humidity. (4)The service life of the filter bag.

In order to cope with the long-term task of climate change, the world economy has been vigorously advocating a "green recovery" after the epidemic. With China’s long-term goal of carbon neutrality by 2060, the entire socio-economic system, including China’s financial system, has faced tremendous challenges. China’s green finance has developed rapidly and green credit has grown steadily. Green finance refers to economic activities that support environmental improvement, response to climate change, and resource conservation and efficient use, that is, investment and financing, project operations, risk management, etc. for projects in the fields of environmental protection, energy conservation, clean energy, green transportation, and green buildings. Financial services. Green finance is an important part of China's "dual carbon" target policy framework. In coordination with industrial policies, consumption policies, tax policies, and carbon market transactions, green finance plays an important role in promoting the realization of the "dual carbon" target. As China put forward the long-term goal of peaking carbon by 2030 and carbon neutral by 2060 at the 75th United Nations General Assembly, the energy and environmental transformation should be combined with national conditions and strive to explore a path of green finance with Chinese characteristics. In the short term, the current novel coronavirus crisis provides governments with a key opportunity to implement green recovery plans. They can formulate new growth strategies to promote economic transformation, so as to solve current structural problems while enhancing the resilience of the economy to future shocks; In the long run, the sustainable development goals of the economy under the new normal are facing increasing resource and environmental pressures. Vigorously developing green industries and promoting the transformation of energy structure are urgently needed to achieve China's carbon neutrality goals. China's green finance market mainly includes the green credit market, green bond market, green fund market, green insurance market and environmental trading market. The current green credit market and green bond market are relatively active green financial markets in China, and the green credit market is developing rapidly. From a national perspective, China has started the construction of a “top-down” green credit policy system since 2007, and has initially established a green financial system framework with abundant policy tools, reasonable policy incentives, and sophisticated evaluation mechanisms. Since 2008, six banks, including Industrial Bank, Bank of Jiangsu and Bank of Huzhou, have successively adopted the "Equator Principles" as a corporate lending standard, in line with international green credit standards. Prior to this, the central government’s willingness to develop green finance and the local government’s willingness to prioritize the development of regional economies and finan...

FMS needle felt material is a physical composite filter material of glass fiber and PPS, P84, NOMEX, etc. The price of this material is relatively low, and the use temperature can reach 260 ℃, which is not affected by the temperature change of the boiler; After the fiber of the material is chemically treated, the exhaust gas of the boiler combustion can also be treated. However, because its main component is glass fiber, its anti-folding performance is poor, resulting in a short service life (generally less than 1 year) of the filter material and poor filtration accuracy (dust removal rate).

◆Flomesi series products have high mechanical strength and low elongation; ◆High temperature resistance (there is a temperature range of 150~400℃ to choose from, see the attached table for the temperature range of various varieties);  ◆Good abrasion resistance, strong folding resistance (more than glass fiber fabric several times);  ◆Acid resistance, Strong alkalinity, good oxidation resistance; ◆Smooth surface, low running resistance, high filtration wind speed;  ◆Long service life, low price; ◆It is better than the glass fiber coated filter material in terms of temperature resistance, filtering wind speed, filtering accuracy and service life.  It can adapt to the following complicated working conditions: 1. Where the temperature is high and the temperature fluctuates greatly; 2. Working conditions with relatively high acidity and alkalinity and relatively strong corrosiveness; 3. Filtration of fine high-temperature dust and recovery of valuable metal materials; 4.Working conditions where the degree of adhesion is high or the humidity is high, and the coated filter material cannot be used. The most suitable application areas:  Cement kiln (kiln head, kiln tail), shaft kiln tail, blast furnace gas purification, ferroalloy smelting furnace, garbage incinerator, power station coal-fired boiler, etc.

The main technological process of the needle punched non-woven filter material for bag filter is: opening-mixing-fine opening-carding-netting-needle punching-finishing-slitting bag making. Carding is the most important step in the pre-spinning process of textiles. The uniformity of the carded web directly affects the quality of the finished product. The function of carding is to process the fully opened fibers into a uniform thin fiber web. There are many types of carding machines, and the carding machine for processing the non-woven bag filter material is a roller type. The continuous belt weighing curtain is used for auto-leveling between the cotton feeding box and the carding machine to keep the amount of fiber fed into the carding machine consistent. For the processing of chemical fibers, the carding process mainly includes three basic actions: carding, stripping and lifting. Generally, carding is mainly used between doffer and cylinder, and peeling is mainly used between doffer, work roll and stripping roller. On a carding machine, a work roll and a stripping roller are called a carding unit. Generally, there are 5 to 8 carding units on a carding machine. The work rolls not only play the role of carding, but also play a role in uniformity and refinement. The carding process is to use the card clothing wrapped on the rollers of the carding machine to card the fibers. In the carding process, the entangled and crimped fiber bundles are separated into single fibers, so that the fibers are straight and parallel. The card clothing used in the non-woven filter carding machine is a metal card clothing. Yuanchen Technology always pays attention to product quality and quality first, and invests in the introduction of advanced Autefa acupuncture production line from Germany for the production of acupuncture filter materials. The production line is equipped with two carding machines, which respectively realize the carding of the dust removal filter material surface layer, the bottom layer fiber and the output of the fiber web, which is a key step for the quality control of the final product.