US 11,858,868 B2
Anti-corrosion and anti-coking ceramic coating with easy state identification for coal-fired boiler and preparation method thereof
Hongfei Sun, Shanghai (CN); Jing Zhu, Shanghai (CN); Xiaotao Luo, Shanghai (CN); Hefa Li, Shanghai (CN); and Xianwei Zhu, Shanghai (CN)
Assigned to Xuzhen New Energy Technology Co Ltd, Shanghai (CN)
Filed by Xuzhen New Energy Technology (Shanghai) Co., Ltd., Shanghai (CN)
Filed on May 12, 2022, as Appl. No. 17/743,394.
Claims priority of application No. 202110975797.7 (CN), filed on Aug. 24, 2021.
Prior Publication US 2023/0060480 A1, Mar. 2, 2023
Int. Cl. C04B 41/89 (2006.01); C04B 35/18 (2006.01); C04B 35/80 (2006.01); C04B 41/87 (2006.01)
CPC C04B 41/89 (2013.01) [C04B 35/18 (2013.01); C04B 35/80 (2013.01); C04B 41/87 (2013.01); C04B 2235/5276 (2013.01); C04B 2235/9607 (2013.01); C04B 2235/9684 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A coal-fired boiler with an anti-corrosion and anti-coking ceramic coating with easy state identification, wherein the anti-corrosion and anti-coking ceramic coating is formed by compounding a bottom coating layer and a surface coating layer, characterized in that:
the bottom coating layer is prepared from raw materials comprising, in parts by weight, 20-30 parts of sodium silicate, 1-4 parts of lanthanum oxide, 1-4 parts of niobium pentoxide, 10-20 parts of aluminum oxide, 7-12 parts of bismuth oxide, 1-3 parts of boron oxide, 1-3 parts of zinc oxide, 1-3 parts of silicon oxide, 5-10 parts of titanium dioxide, 2-4 parts of nano whisker, 1-5 parts of titanium nitride, and 10-15 parts of graphite fluoride; and
the surface coating layer is prepared from raw materials comprising, in parts by weight, 20-30 parts of sodium silicate, 1-4 parts of lanthanum oxide, 1-4 parts of niobium pentoxide, 5-10 parts of chromium oxide, 5-10 parts of aluminum oxide, 7-12 parts of bismuth oxide, 1-3 parts of boron oxide, 1-3 parts of zinc oxide, 1-3 parts of silicon oxide, 10-15 parts of graphite fluoride, 1-5 parts of titanium nitride, 5-10 parts of silicon carbide, 2-6 parts of nano whisker, and 2-6 parts of cobalt green.