With the rapid increase in the consumption of various civil and industrial textiles, especially the demand for textiles such as various interior decorations, the fire caused by textiles is also increasing. In the 1960s, Japan, Europe and the United States and other countries put forward requirements for the flame retardant finishing of textiles, and formulated flame retardant standards for various textiles. According to the International Organization for Standardization, flame retardancy (or flame resistance) refers to the property of a material to slow, stop or prevent flaming combustion. It can be an inherent characteristic of the material, or it can be imparted to the material through a certain treatment. The flame retardant technology of textiles is an applied research based on the latter theory. Modern combustion mechanism research shows that fabric combustion is a closed chain reaction process, and the purpose of sun burning is to break the chain reaction, that is: in the exothermic stage, the flame retardant is a strong absorbent; in the thermal cracking stage, the resistance The flame retardant acts as a catalyst to change the thermal degradation mode of the fiber, so that it reacts in the direction of reducing the flammable gas and increasing the solid; Free radical passivation to achieve the purpose of flame retardant. At present, flame retardant fabrics are generally post-treated with flame retardants for fabrics: 1. Padding baking method Padding baking method is the most widely used flame retardant finishing process, and its process flow is padding-pre-baking-baking-water washing-post-treatment. 2, exhaustion method The exhaustion method is also known as the exhaustion method. This process is to immerse the fabric in a flame retardant liquid for a certain period of time, and then dry and bake it. It is generally used for hydrophobic synthetic fiber fabrics, and the flame retardant and fibers are required to have affinity. 3. Coating method The coating method is a finishing method in which the flame retardant is mixed into the crosslinking agent or the adhesive to fix it on the fabric. 4. Organic solvent method The organic solvent method can directly use water-insoluble flame retardants. 5. Spray method There are two kinds of spraying methods: manual spraying and mechanical continuous spraying. For some fabrics with fluffy patterns, tufts or piles on the surface, the continuous spraying method can generally be used. As a kind of textile, the filter bag is a kind of textile. During the actual operation of the filter bag, when the flue gas temperature is too high, or there are sparks, the filter bag will be burned and damaged, which will affect the filtration efficiency. For the flame retardant of the filter bag, Yuanchen Technology The R&D department has also been working on the flame retardant research of filter bags. Combining technologies such as graft copolymerization, sol-gel and supercritical drying, Xingyuan Fire retardant fi...

1. First of all, check each filter bag to avoid problems with the bag cage bag, which will lead to poor dust removal effect in the later stage. 2. The dust removal collector bag should be installed vertically, and it should be handled lightly to avoid damage to the dust removal bag with excessive force. 3. All kinds of open flames should be prohibited in the installation of the dust removal bag, so as to avoid the occurrence of losses to the dust removal bag. 4. The light should be good enough to install the dust collector bag to avoid inaccurate installation due to insufficient light. 5. Finally, after the dust removal bag is installed, a comprehensive inspection should be done, and if it is found to be wrong, it should be adjusted and corrected in time, and the hygienic cleaning of the dust removal bag should be done well.

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.

There is a time limit for the service life and use cycle of the dust filter bag. Generally speaking, the theoretical life of the dust filter bag is generally about 3-4 years. In fact, in the process of use, the cycle of the dust collector bag is different. For example, the working conditions are bad, whether it exceeds the tolerance range of the dust removal bag, such as high dust concentration, high temperature and other factors, which will cause the dust removal bag to have a long service life. Therefore, when we purchase dust removal bags, we should look at what kind of bags we should focus on according to the industry requirements and working conditions characteristics, such as wear resistance, corrosion resistance, acid resistance, oxidation resistance, etc., and then customize the dust removal bags. In addition to the daily maintenance and maintenance of various dust removal bags, the service life of the dust removal bags will be greatly increased on the whole. 1. High temperature oxidation affects cloth bags In order to use the filter material for power station boilers for a long time in the design life of the flue gas that needs to be dedusted, to ensure that its characteristic indicators do not decrease, the surface singeing, polishing, heat setting, spark-proof, coating, A series of special processes such as waterproof, oil-proof and anti-static. When the oxygen content of the high-temperature flue gas is high, the filter material will be oxidized, which will weaken the strength and be easy to break. 2. Low temperature condensation When the exhaust gas temperature is lower than the dew point, condensation will occur, which will reduce the characteristic index of the filter bag. In severe cases, the surface area of the filter bag will be hardened and even fall off together with the filter bed, which will seriously affect the service life of the filter bag. In addition, the winter in the northern region is cold, which is easy to cause the phenomenon of cake sticking on the inner wall of the ash hopper, so that the ash cannot flow out normally. 3. The running strength of the cloth bag In actual operation, the operating conditions need to be changed frequently, so that the environmental conditions of the filter bag exceed the range required by the design performance indicators, such as the increase of exhaust gas temperature and the increase of dust concentration, etc., which will cause the filter bag. The service life is lower than the design life. 4. The actual temperature of the bag When the exhaust gas temperature is around 140℃, the life of the filter material can reach 40000h. When the flue gas temperature rises to 150℃, the life loss of the filter material gradually increases with the increase of temperature, and when it reaches above 230℃, the filter The life of the material is reduced to zero, and the filter material will be burned; therefore, the exhaust temperature should be strictly controlled during operation to prevent long-te...

The main raw materials for iron and steel production include iron ore, manganese ore, chrome ore, limestone, refractory clay, dolomite, siderite and other minerals and their finished ore, man-made lump ore, ferroalloy, coal washing, coke, gas and coal chemical industry products, refractory products, carbon products, etc. In the production process, iron and steel enterprises not only need to invest a lot of material resources and energy resources, but also discharge a lot of waste: waste water, waste gas and solid waste. These wastes are harmful to the environment and pose a threat to human health. Therefore, we need to purchase suitable denitration catalysts for iron smelting plants after treatment. So what kind of denitration catalyst is suitable for ironworks? The choice of catalyst needs to be comprehensively judged according to different industry conditions, working conditions, etc., and finally the denitration catalyst is customized. For example, we must first analyze what the pollution emitted by this iron smelting plant mainly contains. Our denitration catalyst is mainly denitrification, but we also need to understand the metal elements, sulfur content and the proportion of other substances contained in the emissions. At the same time, it is necessary to consider the temperature of the working condition, the type of fuel, the type of the kiln, the amount of flue gas under the working condition, the denitration operating temperature, the NOx concentration at the denitration inlet (mg/Nm3, the reference oxygen %O2), the denitration inlet SO2 concentration (mg/Nm3), Denitrification inlet dust concentration (mg/Nm3), denitration inlet moisture content (%), denitration outlet NOx concentration (mg/Nm3, reference oxygen %O2), ammonia escape requirements (ppm) and other data are analyzed, and then calculated What kind of denitration catalyst is suitable for selection, and then customized. Therefore, the more accurate the calculation parameters we need to give when purchasing denitration catalysts, the better, the more accurate the matching and customized denitration catalysts are, and the more the catalysts produced can meet the actual needs of our working conditions.

Dust filter bags are used in asphalt concrete mixing, building materials, cement ceramics, lime, gypsum and other production sites. Liquid-solid separation and fine material recovery in chemical, coke, carbon black, dye, pharmaceutical, plastic and other fields. Dust control and purification collection for mining, grain processing, flour, electronics industry, wood processing, etc. Flue gas treatment and dust removal systems in iron plants, steel plants, ferroalloy plants, refractory plants, foundries, power plants, etc. Aluminum electrolysis, smelting flue gas filtration of lead, tin, zinc, copper and other rare metals, fine material recovery, liquid and solid separation. Flue gas filtration of waste incinerators, coal-fired boilers, fluidized bed boilers, etc.