|Industrial dust treatment equipment series|
|Welding fume exhaust gas treatment series|
|Grinding polishing dust removal equipment|
|Stand-alone dust collector|
|Spiral duct and accessories series|
的袋料为PPS针刺过滤毡，具有强度的完整性和固有的耐化学性. 能在恶劣环境下保持良好的过滤性能，达到理想的使用寿命.。 The bag material of the high-temperature dust-removal equipment of the rotary kiln is a PPS needle-punched filter felt, which has the integrity of strength and inherent chemical resistance. It can maintain good filtration performance in harsh environments and achieve ideal service life.
PPS dust bag is mainly used for pulse dust collectors such as coal-fired boiler filtration and fly ash dust removal treatment in power plants.
PPS needle punched filter felt is one of the main types of high temperature resistant filter materials. Due to the properties of PPS fibers, needle felts made from PPS fibers have properties not found in other needle felts. The specific product properties are described below:
First of all, it has good hydrolysis resistance even after 500 hours of continuous use at 160 ° C and 79% relative humidity.
Secondly, the burnt polishing can achieve the effect of easy cleaning.
The third is heat resistance: high melting point, 285 ° C, long heat resistance time, continuous use at 190 ° C, extremely strong steam resistance. It can maintain 90% strength even in high pressure steam at 160 ° C.
The fourth is chemical resistance: chemical resistance is equivalent to fluorinated fiber. At 200 ° C or lower, it can dissolve most acids (except some oxidants such as concentrated nitric acid) in alkali and organic solvents.
The agent maintains stable chemical resistance.
5. Mechanical properties: Strength, elongation and elasticity are basically the same as polyester.
Vertical distance. Flame retardancy: exhibits extremely high flame retardancy and spontaneous combustion (loi limit oxygen index 34-35).
7. Radiation resistance: Compared with traditional nylon and polyester, the radiation resistance of x-ray and medium-ray is greatly improved.
8. Electrical characteristics: The electrical characteristics are stable under high temperature, high humidity, and high frequency conditions.
According to the dust removal method, the dust removal method of the bag type dust collector of the high temperature resistant dust removal equipment of the rotary kiln is to select a dust bag (filter bag). The first condition for selection of high temperature filter bag varieties. It can first decide whether the dust-removing cloth bag (filter material) is woven cloth, needle felt, compression felt or dust-removing cloth bag at room temperature. As for the specific specifications of the dust bag (filter bag), you can further consider according to other filtering conditions.
1. The kinetic energy of dust removal applied to the dust layer is low energy type. In the early days, fabric dust bag (filter bag) was mainly used. At present, most of them use needle felts. The main reason is that in order to improve the filtration speed, needle felts need a cloth weight of 280-350 g / m2 and 1.0 to 1.3 mm, which has good air permeability. When sewing and installing the dust filter bag, it is usually necessary to tighten the dust filter bag to prevent the filter bag from elongating. As the dust filter bag elongation reaches about 2%, the dust removal effect becomes worse. During the molding process, we will consider the technical conditions to prevent the dust filter bag from elongating.
2. The pulsed blowback method is applied to the kinetic energy of dust between high-energy type and low-energy type. This type of dust removal method requires that the dust bag (filter material) is flexible and also requires a certain rigidity. Satin and twill fabrics are the best choice to use fabric dust filter bags. However, considering the dust removal efficiency, filtration speed and abrasion resistance of the frame, it is best to use needle felts with a weight of 300-600 g / m2. Woven fabrics are rarely used. If necessary, various surface treatments should be performed.
3. The performance of air ring spraying dust removal is quite good, and it is required that the dust removal bag (filter bag) has good rigidity, small holes and abrasion resistance. In this way, the dust removal bag (filter bag) will not change when the blowing ring moves up and down Does not fluff ... Therefore, it is limited to the use of felt or needle felt. It also requires thick, high-density felt. The weight of the cloth is generally 600 ~ 800 g / m2.
4. Rotary kiln high-temperature dust-removing equipment is used for dust removal with the largest kinetic energy. It is a typical external dust removal method. Fine dust is very strong, and the residual amount of dust on the yarn attached to the dust bag (filter bag) is relatively small. The dust bag (filter bag) used is usually felt or needle felt. Under the action of pulse blowing, the dust-removing filter bag is deformed instantly and generates a lot of stress, so it is necessary to use a filter material with strong tensile strength. The dust bag (filter bag) often rubs against the frame. You can use a wear-resistant dust bag or a fabric dust bag (filter bag).
5. The back blowing dust removal method (reverse absorption shrink bag) generally uses fabric dust bag (filter bag), but it can also use light felt (300 ~ 400 g / m2), soft, and small size changes. Most use fiberglass dust bags (filter bags), and most are used in large bag dust collectors. There are certain requirements for hoisting and sewing of the dust filter bag. If you do not pay attention, it will greatly affect the service life of the dust filter bag.
When the gas and dust are acidic and neutral, the high temperature dust removal equipment of the rotary kiln is best to use a dust bag (filter bag) made of polyester and polypropylene. This bag is resistant to most inorganic and organic acids. .. But it must be noted that when the temperature of the flue gas exceeds 80 ° C, the strength of polypropylene will decrease. When the polyester dust bag (filter bag) filters alkaline gas, due to the influence of temperature, humidity and other conditions, it will decompose with water, resulting in a significant decrease in the strength of the dust bag (filter bag). Therefore, in this case, a nylon dust bag (filter bag) must be used. Due to price and other factors, the scope of application of this dust filter bag (polytetrafluoroethylene, etc.) should be limited, so you should choose it carefully.
的回转窑耐高温除尘设备 相关介绍，更多回转窑耐高温除尘设备 型号、工作原理、造型要领、需要宇晨提供看现场出设计方案等相关服务，欢迎致电 400-622-6298 ，我司为您提供更多更全面的信息，欢迎您的来电！ The above is the introduction of some high-temperature dust-removing equipment of rotary kiln from Yuchen dust- removing equipment manufacturers . More types of high-temperature dust-removing equipment of rotary kiln , working principle, modeling essentials, need Yuchen to provide on-site design solutions and other related services, please call 400 -622-6298 , our company provides you with more comprehensive information, welcome your call!