China's iron-making blast furnace gas bag filter technology began in 1974. With the development of dust collector technology, filter bag materials from glass fiber cloth, glass fiber needle felt, METAMAX needle felt development are now mostly used in Flumes (r)
China's iron-making blast furnace gas bag filter technology began in 1974. With the development of dust collector technology, filter bag materials from glass fiber cloth, glass fiber needle felt, METAMAX needle felt development are now mostly used in Flumes (r) (FMS(r)) composite group high temperature filter material products. The large-scale blast furnace gas bag type dust removal showed a strong development momentum. In 2007, the 3200 m' blast furnace gas bag type dust collector purification was successful, 5000m. The blast furnace bag type dust removal project is also underway.
Gas is widely distributed in various metallurgical enterprises. On the one hand, it causes energy waste; on the other hand, it causes pollution of the environment. At the same time, because the dust content in the blast furnace gas is large, it is not easy to directly enter the gas pipe network, and must be cleaned by the process. To reduce the dust content of the blast furnace gas, it is generally required that the dust content of the gas is less than 10mg/Nm3 to ensure the normal use of the associated equipment.
Flume's @[email protected] needle seal felt good
The needle felt filter bag has the characteristics of high temperature resistance, antimony corrosion, large air volume and long service life. It is made by mixing several kinds of high temperature resistant fibers into a felt with a different ratio of glass fiber blending, and then finishing with a fluorochemical auxiliary. The product has good wear resistance, good folding resistance and low export emission concentration. Mainly used in the treatment of high temperature flue gas such as blast furnace gas purification in dry steel plants. After nearly ten years of mass production and promotion, it has achieved good results.
Filtration performance analysis of needle felt filter bag
The felt filter bag is composed of different fineness fields and forms a three-dimensional gradient filter material, which is a permeable material, and has a large number of semi-through holes and through holes therein. The surface layer is made of ultra-fine fiber layer, and the ultra-fine surface layer makes the surface of the needle felt more dense. The ability to block fine dust is improved, and the surface is easy to be cleaned.
Special filter bag filter material filtration method
The gradient stratification structure forms a fluid channel that is densely distributed before and after, and is changed from a constant-width flow passage of a conventional needle felt filter bag to a trapezoidal flow passage of a front narrow and a wide width. The filtration method is changed from 4 times to + deep layer to “surface filtrationâ€, and the filter surface layer formed by the superfine fiber can block the ability of the fine dust and dust. The trapezoidal passage of the front narrow and wide width makes the inner layer of the filter material difficult to collect dust, but The long-term operation of the filter material and the increase in the inherent resistance of the filter material slow down.
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
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