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Investigation and Analysis of High Temperature Corrosion and Degradation of Marine Boiler Combustion Swirler
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作者 RS Virdi DG Thakur 《Journal of Marine Science and Application》 CSCD 2016年第1期86-94,共9页
The present paper investigated and analyzed swirler material consisting of mild steel which was subjected to service for the period of one year in a 30 MW marine boiler. Due to the presence of high temperatures in the... The present paper investigated and analyzed swirler material consisting of mild steel which was subjected to service for the period of one year in a 30 MW marine boiler. Due to the presence of high temperatures in the furnace coupled with the corrosive marine environment swirler material showed accelerated degradation and material wastage. An investigation into the feasibility of manufacturing the existing swirler with an alternate material or coating the swirler material with a thermal barrier coating was undertaken. Based on their properties and performance, SS 304 and SS 316 were proposed as the replacement materials for the swirler. The other alternative of coating the existing swirlers with a form thermal barrier coating to observe for any improvement in their performance at elevated temperatures was also tested. Stellite, which is a Ni-Co based coating, was carried out on the MS samples and the same were exposed to same temperatures mentioned above. The performance of the available options was evaluated with respect to the grain structure of the material, the hardness value of the materials and deterioration at elevated temperatures. Investigation showed the proposed materials/ coatings like SS 304, SS 316 and Stellite coating revealed that SS 316 is the material best suited for high temperature application. 展开更多
关键词 marine boiler CORROSION DEGRADATION high temperature SWIRLER stainless steel
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Research on Marine Boiler's Pressurized Combustion and Heat Transfer 被引量:3
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作者 PingjianMING RenqiuJIANG YanjunLI BaozhiSUN 《Journal of Thermal Science》 SCIE EI CAS CSCD 2005年第1期76-80,共5页
The effect of pressure on combustion and heat transfer is analyzed. The research is based on the basic combustion and heat transfer theorem. A correction for the heat calculation method for pressurized furnace is made... The effect of pressure on combustion and heat transfer is analyzed. The research is based on the basic combustion and heat transfer theorem. A correction for the heat calculation method for pressurized furnace is made on the basis of the normal pressure case. The correction takes the effect of pressurizing into account. The results show that the correction is reasonable and the method is applicable to combustion and heat transfer of the marine supercharged boiler. 展开更多
关键词 marine boiler pressurized combustion radiant heat transfer heat calculation method.
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