Overview of advanced methods of boiler tubes erosion protection
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2012
Authors
Rajičić, BratislavBakić, Gordana
Đukić, Miloš
Šijački Žeravčić, Vera
Braunović, Milenko
Anđelić, Biljana
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Based on the analysis of the exploitation behavior of domestic thermal power plants it was concluded that the failures on the boiler tubing systems is due to erosion by flying ashes and that it is the main cause for the boiler tube failure especially in the evaporator and economiser surfaces. Current boiler tube erosion protection methods can be classified into three basic categories: a) welding overlay; b) thermal spraying (metallization) and c) mechanical protection. Welding overlay and thermal spraying procedures are successfully implemented on the clean boiler tubings prior to installation, although the same procedure with qualitative preparation (cleaning) can effectively be used even with the boiler tubings that were in the operation for a period of time. On modern thermal power plants in the world, thermal spraying method is widely used for the protection against erosion, abrasion and corrosion. Despite being inexpensive, mechanical protection methods are generally not used in t...he modern systems because of limited lifetime, difficulties during dismantling and reduced heat transfer on the protected tubings. In order to reduce the number of outages (direct material saving) and thus improve the operational reliability, availability and competitiveness, the use of modern erosion protection methods is of high priority.
Keywords:
boiler tubes / erosion protection / welding overlay / thermal spraying / reliabilitySource:
Power Plants 2012 – Međunarodna konferencija o elektranama, 2012Publisher:
- Society of Thermal Engineers of Serbia (Društvo Termičara Srbije)
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Mašinski fakultetTY - CONF AU - Rajičić, Bratislav AU - Bakić, Gordana AU - Đukić, Miloš AU - Šijački Žeravčić, Vera AU - Braunović, Milenko AU - Anđelić, Biljana PY - 2012 UR - https://machinery.mas.bg.ac.rs/handle/123456789/5018 AB - Based on the analysis of the exploitation behavior of domestic thermal power plants it was concluded that the failures on the boiler tubing systems is due to erosion by flying ashes and that it is the main cause for the boiler tube failure especially in the evaporator and economiser surfaces. Current boiler tube erosion protection methods can be classified into three basic categories: a) welding overlay; b) thermal spraying (metallization) and c) mechanical protection. Welding overlay and thermal spraying procedures are successfully implemented on the clean boiler tubings prior to installation, although the same procedure with qualitative preparation (cleaning) can effectively be used even with the boiler tubings that were in the operation for a period of time. On modern thermal power plants in the world, thermal spraying method is widely used for the protection against erosion, abrasion and corrosion. Despite being inexpensive, mechanical protection methods are generally not used in the modern systems because of limited lifetime, difficulties during dismantling and reduced heat transfer on the protected tubings. In order to reduce the number of outages (direct material saving) and thus improve the operational reliability, availability and competitiveness, the use of modern erosion protection methods is of high priority. PB - Society of Thermal Engineers of Serbia (Društvo Termičara Srbije) C3 - Power Plants 2012 – Međunarodna konferencija o elektranama T1 - Overview of advanced methods of boiler tubes erosion protection UR - https://hdl.handle.net/21.15107/rcub_machinery_5018 ER -
@conference{ author = "Rajičić, Bratislav and Bakić, Gordana and Đukić, Miloš and Šijački Žeravčić, Vera and Braunović, Milenko and Anđelić, Biljana", year = "2012", abstract = "Based on the analysis of the exploitation behavior of domestic thermal power plants it was concluded that the failures on the boiler tubing systems is due to erosion by flying ashes and that it is the main cause for the boiler tube failure especially in the evaporator and economiser surfaces. Current boiler tube erosion protection methods can be classified into three basic categories: a) welding overlay; b) thermal spraying (metallization) and c) mechanical protection. Welding overlay and thermal spraying procedures are successfully implemented on the clean boiler tubings prior to installation, although the same procedure with qualitative preparation (cleaning) can effectively be used even with the boiler tubings that were in the operation for a period of time. On modern thermal power plants in the world, thermal spraying method is widely used for the protection against erosion, abrasion and corrosion. Despite being inexpensive, mechanical protection methods are generally not used in the modern systems because of limited lifetime, difficulties during dismantling and reduced heat transfer on the protected tubings. In order to reduce the number of outages (direct material saving) and thus improve the operational reliability, availability and competitiveness, the use of modern erosion protection methods is of high priority.", publisher = "Society of Thermal Engineers of Serbia (Društvo Termičara Srbije)", journal = "Power Plants 2012 – Međunarodna konferencija o elektranama", title = "Overview of advanced methods of boiler tubes erosion protection", url = "https://hdl.handle.net/21.15107/rcub_machinery_5018" }
Rajičić, B., Bakić, G., Đukić, M., Šijački Žeravčić, V., Braunović, M.,& Anđelić, B.. (2012). Overview of advanced methods of boiler tubes erosion protection. in Power Plants 2012 – Međunarodna konferencija o elektranama Society of Thermal Engineers of Serbia (Društvo Termičara Srbije).. https://hdl.handle.net/21.15107/rcub_machinery_5018
Rajičić B, Bakić G, Đukić M, Šijački Žeravčić V, Braunović M, Anđelić B. Overview of advanced methods of boiler tubes erosion protection. in Power Plants 2012 – Međunarodna konferencija o elektranama. 2012;. https://hdl.handle.net/21.15107/rcub_machinery_5018 .
Rajičić, Bratislav, Bakić, Gordana, Đukić, Miloš, Šijački Žeravčić, Vera, Braunović, Milenko, Anđelić, Biljana, "Overview of advanced methods of boiler tubes erosion protection" in Power Plants 2012 – Međunarodna konferencija o elektranama (2012), https://hdl.handle.net/21.15107/rcub_machinery_5018 .