LEAKAGE FAILURE ANALYSIS OF TUBE BUNDLE CONNECTION OF FLUE GAS WASTE HEAT RECOVERY DEVICE (MT)
Leakage occurred on a company′s waste heat recovery unit after short-term operation of it. In order to determine the cause of the leak and take effective countermeasures, the reasons for the failure of the waste heat recovery device were analyzed. Firstly, the stress level of the waste heat recovery...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2023-01-01
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| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2023.02.028 |
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| author | REN ZiQi DONG JinShan FENG Jun DING Yi |
| author_facet | REN ZiQi DONG JinShan FENG Jun DING Yi |
| author_sort | REN ZiQi |
| collection | DOAJ |
| description | Leakage occurred on a company′s waste heat recovery unit after short-term operation of it. In order to determine the cause of the leak and take effective countermeasures, the reasons for the failure of the waste heat recovery device were analyzed. Firstly, the stress level of the waste heat recovery device under working condition was calculated by Ansys simulation software, and the maximum stress point was found at the tube sheet, and the stress value at the joint of tube sheet and heat exchange tube was larger.Then, macro-corrosion morphology analysis, metallographic microstructure analysis, micro-hardness test, scanning electron microscope（SEM） analysis of corrosion micro-morphology and EDS micro-area composition analysis of corrosion products were carried out on the sampling site of tube bundle leakage.The results show that, because of high temperature, increasing alkali concentration occurs at the crack of tube bundle. And welding cracks exist there, which eventually leads to alkali stress corrosion cracking at the weld of tube sheet and tube bundle. |
| format | Article |
| id | doaj-art-5c362288aebe4750bc77ce8d1361f685 |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2023-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-5c362288aebe4750bc77ce8d1361f6852025-01-15T02:40:15ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692023-01-0146246836351344LEAKAGE FAILURE ANALYSIS OF TUBE BUNDLE CONNECTION OF FLUE GAS WASTE HEAT RECOVERY DEVICE (MT)REN ZiQiDONG JinShanFENG JunDING YiLeakage occurred on a company′s waste heat recovery unit after short-term operation of it. In order to determine the cause of the leak and take effective countermeasures, the reasons for the failure of the waste heat recovery device were analyzed. Firstly, the stress level of the waste heat recovery device under working condition was calculated by Ansys simulation software, and the maximum stress point was found at the tube sheet, and the stress value at the joint of tube sheet and heat exchange tube was larger.Then, macro-corrosion morphology analysis, metallographic microstructure analysis, micro-hardness test, scanning electron microscope（SEM） analysis of corrosion micro-morphology and EDS micro-area composition analysis of corrosion products were carried out on the sampling site of tube bundle leakage.The results show that, because of high temperature, increasing alkali concentration occurs at the crack of tube bundle. And welding cracks exist there, which eventually leads to alkali stress corrosion cracking at the weld of tube sheet and tube bundle.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2023.02.028Waste heat recovery deviceLeakageFinite element simulationStress analysisFailure analysisAlkali stress corrosion |
| spellingShingle | REN ZiQi DONG JinShan FENG Jun DING Yi LEAKAGE FAILURE ANALYSIS OF TUBE BUNDLE CONNECTION OF FLUE GAS WASTE HEAT RECOVERY DEVICE (MT) Jixie qiangdu Waste heat recovery device Leakage Finite element simulation Stress analysis Failure analysis Alkali stress corrosion |
| title | LEAKAGE FAILURE ANALYSIS OF TUBE BUNDLE CONNECTION OF FLUE GAS WASTE HEAT RECOVERY DEVICE (MT) |
| title_full | LEAKAGE FAILURE ANALYSIS OF TUBE BUNDLE CONNECTION OF FLUE GAS WASTE HEAT RECOVERY DEVICE (MT) |
| title_fullStr | LEAKAGE FAILURE ANALYSIS OF TUBE BUNDLE CONNECTION OF FLUE GAS WASTE HEAT RECOVERY DEVICE (MT) |
| title_full_unstemmed | LEAKAGE FAILURE ANALYSIS OF TUBE BUNDLE CONNECTION OF FLUE GAS WASTE HEAT RECOVERY DEVICE (MT) |
| title_short | LEAKAGE FAILURE ANALYSIS OF TUBE BUNDLE CONNECTION OF FLUE GAS WASTE HEAT RECOVERY DEVICE (MT) |
| title_sort | leakage failure analysis of tube bundle connection of flue gas waste heat recovery device mt |
| topic | Waste heat recovery device Leakage Finite element simulation Stress analysis Failure analysis Alkali stress corrosion |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2023.02.028 |
| work_keys_str_mv | AT renziqi leakagefailureanalysisoftubebundleconnectionoffluegaswasteheatrecoverydevicemt AT dongjinshan leakagefailureanalysisoftubebundleconnectionoffluegaswasteheatrecoverydevicemt AT fengjun leakagefailureanalysisoftubebundleconnectionoffluegaswasteheatrecoverydevicemt AT dingyi leakagefailureanalysisoftubebundleconnectionoffluegaswasteheatrecoverydevicemt |