ANALYSIS OF STEAM SUPERHEATER TUBES FAILURES OF MEDIUM-PRESSURE BOILERS

机译：中压锅炉蒸汽超热管故障分析

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This paper describes the analysis of recurrent failures experienced on 1%Cr - 1/2%Mo steam superheater tubes of two boilers at an oil refinery. In all cases, metallurgical analysis of failed tubes has shown overheating of material, high temperature oxidation, bulging, cracks and creep degradation as a result of internal deposits on tube wall. Chemical analysis of deposits samples has determined the presence of sodium sulfate attributable to boiler water carryover to the superheater. To determine the root cause, a comprehensive assessment of actual boiler conditions was carried out, considering operation variables and procedures, maintenance and inspection programs, combustion and control system modifications. On the basis of this assessment, an integral program was implemented to improve boiler reliability.

机译：本文描述了对一家炼油厂的两台锅炉的1％Cr-1/2％Mo蒸汽过热器管遇到的经常性故障的分析。在所有情况下，对失效管的冶金分析均表明，由于管壁内部沉积物，导致材料过热，高温氧化，鼓胀，裂纹和蠕变降解。沉积物样品的化学分析已经确定了硫酸钠的存在，这归因于锅炉水带入过热器。为了确定根本原因，对实际锅炉状况进行了全面评估，其中考虑了操作变量和程序，维护和检查程序，燃烧和控制系统的修改。在此评估的基础上，实施了一项整体计划以提高锅炉的可靠性。

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《Corrosion conference and expo;Corrosion 2008》|2008年|3870-3883|共14页
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作者
Veronica A. Dominguez; Roberto Tedesco; Pablo G. Pena;
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正文语种
中图分类材料腐蚀与保护;
关键词
superheater tube; boiler failure; high temperature oxidation; overheating;

机译：过热器管锅炉故障;高温氧化;过热;

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1. Stress and integrity analysis of steam superheater tubes of a high pressure boiler [J] . Adriana Da Cunha Rocha, Daniel Leite Cypriano Neves, Ediberto Bastos Tinoco, Materials Research . 2004,第1期

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2. Failure Analysis and Remedial Solution Suggestion for Superheater Tubes of a Power Plant Boiler [J] . Shami Aliakbar, Torshizi Seyed Ebrahim Moussavi, Jahangiri Ali Transactions of the Indian Institute of Metals . 2020,第7期

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3. Failure analysis of a superheater tube ruptured in a power plant boiler: Main causes and preventive strategies [J] . Haghighat-Shishavan Babak, Firouzi-Nerbin Hossein, Nazarian-Samani Masoud, Engineering failure analysis . 2019,第期

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4. ANALYSIS OF STEAM SUPERHEATER TUBES FAILURES OF MEDIUM-PRESSURE BOILERS [C] . Veronica A. Dominguez, Roberto Tedesco, Pablo G. Pena Corrosion conference and expo . 2008

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5. Study of the long-term service degradation of boiler superheater tubes and its effects on remaining life predictions [D] . Alobaidi, Khalid Ayedh 2013

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6. Intelligent Steam Power Plant Boiler Waterwall Tube Leakage Detection via Machine Learning-Based Optimal Sensor Selection [O] . Salman Khalid, Woocheol Lim, Heung Soo Kim, 2020

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7. Stress and integrity analysis of steam superheater tubes of a high pressure boiler [O] . Daniel Leite Cypriano Neves, Jansen Renato de Carvalho Seixas, Ediberto Bastos Tinoco, 2004

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8. Corrosion Problems in Coal-Fired Boiler Superheater and Reheater Tubes:Steam-Side Oxidation and Exfoliation Review and Results of Laboratory Tests [R] . 1981

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ANALYSIS OF STEAM SUPERHEATER TUBES FAILURES OF MEDIUM-PRESSURE BOILERS

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