Construction Technology anti-corrosion materials desulfurization tower

 General brick chimneys, chimneys and steel reinforced concrete chimney categories. The material is generally divided into categories: iron, asbestos, ceramic, these types generally used in small spaces, such as home, office. There are also built with bricks, for more cylindrical, on thin under thick, generally used in large industrial plants, such as large boilers, smelters, etc. Construction methods in the steel chimney desulfurization grassroots use: ① first surface degreasing decontamination, after then rust, rust rating should meet no less than Sa2.0 or St3 standard. After the dry-cleaning surface cleaning rust with VEGF resin bottoming, to be dry construction. ② by hand trowel into the mud Knife 1-2mm (per channel) VEGF thick clay layer, a few hours after hardening, then the design requirements of the construction to a predetermined thickness. Usually at each coating thickness of 1mm for testing to confirm whether the coating pinholes and other defects. ③ appropriate to increase the thickness or shape of mutations at the corner, or use the same FRP composite. ④ with VEGF resin Overlay one to two. ⑤VEGF flake mortar coating quality control. VEGF flake mortar coating quality directly affects its corrosion resistance and service life, and hence, the quality of VEGF flake mortar coating to be strictly controlled. In general, the final coating test items are: appearance defects, hardness, pinhole test, test thickness, hammering inspection. Table 2.3.5.2 clay with different specifications Scale amount (KG / M2) primer (per channel) clay layer (1mm thick) topcoat (every) metal surface VEGF-1-M0.20 ~ 0.251.4 ~ 1.60.25 Advantages impermeability, small construction difficulty, easy to repair and moderate cost less physical failure such as VEGF-2-M0.15 ~ 0.201.3 ~ 1.50.20 4) corrosion flake mortar lining engineering scale clay having due VEGF . Thus, VEGF scale clay is widely used in electric power, metallurgy and chemical industries, especially power system flue gas desulfurization (FGD) systems devices such as absorber, oxidation tower, the feed tube, below. Table 2.3.5.3 VEGF flake mortar in wet FGD gas application device name specification corrosive conditions Corrosion Protection SO2 gas feed pipe, 150 ℃ or below 150 ℃ VEGF lining, FRP SO2 gas, 150 ℃ -200 ℃ temperature coating tower SO2 gas, ≤150 ℃ VEGF rapid cooling towers lining SO2 gas, 150 - 200 ℃ VEGF - bricks SO2 gas, 200 - 300 ℃ VEGF - bricks SO2 gas, 500 - 700 ℃ VEGF - firebrick circulation tank H2SO3, H2SO4 fog, 60 - 90 ℃ VEGF lining, FRP intermediate duct SO2 gas, H2SO4 fog, 60 - 80 ℃ VEGF lining, FRP absorber pH = 3 - 12,60 - 80 ℃ VEGF lining, rubber lining pH = 3 - 12,150 ℃ VEGF lining pH = 3 - 12,250 ℃ VEGF lining - firebrick pH recycle column = 4 - 14,60 - 80 ℃ VEGF lining, rubber lining, FRP outlet pipe SO2 , H2SO4 fog, 60 - 70 ℃ VEGF lining, FRP acid mist separator SO2, H2SO4 fog, 60 - 70 ℃ VEGF lining, FRP concentrator pH = 3 - 12,60 - 70 ℃ VEGF lining, rubber lining, FRP oxidation tower pH = 3 - 12,60 - 80 ℃ VEGF lining, VEGF-FRP pipe rubber lining, FRP duct ≤100 ℃ VEGF lining, FRP 100 - 150 ℃ VEGF lining, FRP chemical tank temperature - 60 ℃ VEGF lining, rubber lining , FRP Contact: Mr Lu Mobile: 13832638894 Website: www.wantengff.com