FRP desulfurization tower series
Tunnel kiln desulfurization tower
Tunnel kiln desulfurization tower [Working principle] Using inertial collision, condensation, centrifugal force and other principles, under the action of the induced draft fan, the flue gas falls from a certain height, hits the liquid surface at high speed, forming water mist, and most of the particles sink into the water. Under the action of the deduster shunt, the atomized airflow rises rapidly, and the droplets further collide, condense, and form a water-ash mixture. The water-ash mixture is separated by steam and water through a cyclone impeller, so as to completely achieve its desulfurization—dust removal—dehydration effect. After purification The smoke is discharged from the smoke outlet at the top.
①General coal-fired tunnel kiln desulfurization towers and boiler exhaust gases contain more sulfides, nitrogen oxides and other harmful gases. When hydrated, they form a strong acidic corrosive liquid, which has a strong ability to corrode metal parts, and hemp. The calcium, magnesium, iron and other ingredients contained in it will also gradually cause chemical reactions, gradually eroding the interior of the hemp stone, destroying the structure of the hemp stone, causing its layers to erode and peel off, generating hemp pits, unevenness, affecting the use effect, increasing the intensity of maintenance and Difficulty, reducing the service life of the desulfurization dust collector. The metal tower body is composed of two materials and has very strict temperature requirements. Due to the inconsistent expansion coefficients, rapid cooling and rapid heating can easily peel off the outer shell and the inner lining, causing the outer shell to corrode and leak, difficult to maintain, increasing troubles during operation, and affecting use. life. The bct series boiler desulfurization and dust collector is made of high temperature resistant glass fiber reinforced plastic, which not only solves the problem of high temperature resistance, but also has the characteristics of acid and alkali resistance and corrosion resistance applied to the boiler's dust removal and desulfurization, which has become a major advantage.
The practice of more than ten years shows that the desulfurization tower of the tunnel kiln has the characteristics of resistance to acid and alkali corrosion, abrasion resistance and aging, which makes its life much longer than that of metal and granite products. When mature products are operated in accordance with operating procedures, the maintenance volume is almost equal to zero. The attenuation coefficient of polyester is generally 10-12 years. Modified FRP products are an organic combination of polyester and other high temperature resistant materials. The aging period of this composite material can reach 20 years.
② High temperature resistance
All structures of the tunnel kiln desulfurization tower are made of modified high temperature resistant glass fiber reinforced plastic. Ordinary glass products are not resistant to high temperatures. They soften at 80 ° C and volatilize at 120 ° C. They cannot be used as desulfurizers.
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