Anti-corrosion and wear-resistant treatment method for Lurgi gasifier
A Luqi gasifier, anti-corrosion and wear-resistant technology, applied in anti-corrosion coatings, manufacturing combustible gases, coatings, etc., can solve problems such as huge manufacturing and maintenance costs, huge system impact, and overall thinning, saving maintenance time. , the effect of reducing the cooling rate and increasing the density
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Embodiment 1
[0020] The anti-corrosion and wear-resistant treatment method of Lurgi gasifier includes the following steps: (1) Polish the corroded surface inside the neutral cylinder of Lurgi gasifier with sandpaper to remove the corroded layer; then preheat the corroded surface to 50°C Welding 1Cr13 tortoise shell netting G-03 preheated to 50°C, electrode diameter is 3.2mm, welding current is 140A, welding voltage is 23V, welding points are 32; (2) preheating tortoise shell netting, treatment temperature 380°C, then thermal spray anti-corrosion and wear-resistant materials. The composition of anti-corrosion and wear-resistant materials is: 35kg of tungsten carbide powder, 27kg of nano-zirconia, 10kg of nano-titanium dioxide, 5kg of zinc, and 10kg of activated alumina.
Embodiment 2
[0022] The anti-corrosion and wear-resistant treatment method for Lurgi gasifier includes the following steps: (1) Grinding the corroded surface of the inner wall of the upper cone section of the Lurgi gasifier neutral tube with sandpaper to remove the corroded layer; then preheating the corroded surface to After 70°C, the welding is preheated to 90°C for welding 1Cr13 tortoise shell net G-03, the diameter of the electrode is 3.2mm, the welding current is 220A, the welding voltage is 27V, and the number of welding points is 40; (2) Preheat the tortoise shell net Treatment, the treatment temperature is 450 ° C, and then thermal spray anti-corrosion and wear-resistant materials. The composition of anti-corrosion and wear-resistant materials is: 50kg of tungsten carbide powder, 46kg of nano-zirconia, 15kg of nano-titanium dioxide, 10kg of zinc, and 15kg of activated alumina.
Embodiment 3
[0024] The anti-corrosion and wear-resistant treatment method of Lurgi gasifier includes the following steps: (1) Sand the corroded surface inside the neutral tube of Lurgi gasifier and the inner wall of the upper cone section with sandpaper to remove the corroded layer; After heating to 100°C, weld the high-temperature-resistant tortoise shell netting G-05 that is preheated to 70°C. The diameter of the electrode is 3.2mm, the welding current is 150A, the welding voltage is 23V, and the number of welding points is 35; (2) the tortoise shell netting Carry out preheating treatment, the treatment temperature is 390°C, and then thermal spray anti-corrosion and wear-resistant materials. The composition of anti-corrosion and wear-resistant materials is: 40kg of tungsten carbide powder, 37kg of nano-zirconia, 12kg of nano-titanium dioxide, 8kg of zinc, and 12kg of activated alumina.
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