A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention relates to an anti-corrosion and anti-coking coating for a coal-fired boiler. The coating is coated on the surface of a water-cooled wall of the coal-fired boiler and comprises an anti-corrosion layer coated on a substrate and an anti-coking layer coated on a surface layer. The anti-corrosion layer is prepared by combining 10-100 parts by weight of flaky mica powder, 10-100 parts byweight of flaky talcum powder, 10-100 parts by weight of flaky bentonite powder and 10-100 parts by weight of flaky graphite powder through binding agent silicon resin, and the weight part of the silicon resin is 20-300 parts by weight; the anti-coking layer is prepared from the following components in parts by weight: 5-80 parts of boron nitride, 5-60 parts of zirconium oxide, 5-60 parts of cerium oxide and 5-60 parts of lanthanum oxide powder, the binding agent is silica sol or zirconium sol, and the weight part of the binding agent is 10-200 parts. The coating is mainly made of an inorganicmaterial, has good high-temperature resistance, corrosion resistance and coking resistance, and has double-layer protection on the metal furnace tube; the problems of coking and corrosion of the furnace tube are effectively reduced, the hearth temperature and the smoke exhaust temperature are reduced, the heat exchange efficiency of the furnace tube is improved, and the coal consumption is reduced so that the service life of the boiler is effectively prolonged, and the operation safety and stability are effectively improved.
本发明涉及一种用于燃煤锅炉的防腐防结焦涂层，该涂层涂覆于燃煤锅炉水冷壁表面，所述的涂层包括涂于基底的防腐层和涂于表层的防结焦层，防腐层按照重量份数由片状云母粉10‑100份、片状滑石粉10‑100份、片状膨润土粉10‑100份以及鳞片状石墨粉10‑100份经结合剂硅树脂结合制成，硅树脂的重量份数为20‑300份；防结焦层按照重量份数由氮化硼5‑80份、氧化锆5‑60份、氧化铈5‑60份和氧化镧粉5‑60份制成，结合剂为硅溶胶或锆溶胶，结合剂的重量份数为10‑200份。本发明的涂层以无机材料为主，耐高温，防腐防结焦效果好，对金属炉管双层防护；有效减少了炉管的结焦和腐蚀问题，降低了炉膛温度和排烟温度，提高了炉管的换热效率，降低煤耗，从而有效提高了锅炉的使用寿命和运行的安全稳定性。
The invention relates to an anti-corrosion and anti-coking coating for a coal-fired boiler. The coating is coated on the surface of a water-cooled wall of the coal-fired boiler and comprises an anti-corrosion layer coated on a substrate and an anti-coking layer coated on a surface layer. The anti-corrosion layer is prepared by combining 10-100 parts by weight of flaky mica powder, 10-100 parts byweight of flaky talcum powder, 10-100 parts by weight of flaky bentonite powder and 10-100 parts by weight of flaky graphite powder through binding agent silicon resin, and the weight part of the silicon resin is 20-300 parts by weight; the anti-coking layer is prepared from the following components in parts by weight: 5-80 parts of boron nitride, 5-60 parts of zirconium oxide, 5-60 parts of cerium oxide and 5-60 parts of lanthanum oxide powder, the binding agent is silica sol or zirconium sol, and the weight part of the binding agent is 10-200 parts. The coating is mainly made of an inorganicmaterial, has good high-temperature resistance, corrosion resistance and coking resistance, and has double-layer protection on the metal furnace tube; the problems of coking and corrosion of the furnace tube are effectively reduced, the hearth temperature and the smoke exhaust temperature are reduced, the heat exchange efficiency of the furnace tube is improved, and the coal consumption is reduced so that the service life of the boiler is effectively prolonged, and the operation safety and stability are effectively improved.
本发明涉及一种用于燃煤锅炉的防腐防结焦涂层，该涂层涂覆于燃煤锅炉水冷壁表面，所述的涂层包括涂于基底的防腐层和涂于表层的防结焦层，防腐层按照重量份数由片状云母粉10‑100份、片状滑石粉10‑100份、片状膨润土粉10‑100份以及鳞片状石墨粉10‑100份经结合剂硅树脂结合制成，硅树脂的重量份数为20‑300份；防结焦层按照重量份数由氮化硼5‑80份、氧化锆5‑60份、氧化铈5‑60份和氧化镧粉5‑60份制成，结合剂为硅溶胶或锆溶胶，结合剂的重量份数为10‑200份。本发明的涂层以无机材料为主，耐高温，防腐防结焦效果好，对金属炉管双层防护；有效减少了炉管的结焦和腐蚀问题，降低了炉膛温度和排烟温度，提高了炉管的换热效率，降低煤耗，从而有效提高了锅炉的使用寿命和运行的安全稳定性。
Anti-corrosion and anti-coking coating for coal-fired boiler and spraying method thereof
一种用于燃煤锅炉的防腐防结焦涂层及其喷涂方法
HU MIN (author)
2021-01-22
Patent
Electronic Resource
Chinese
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