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contributor authorOhata, Mitsuru
contributor authorKawai, Nana
contributor authorTagawa, Tetsuya
contributor authorMinami, Fumiyoshi
contributor authorYamamoto, Toshiya
contributor authorArii, Kazuaki
contributor authorNiimoto, Shinta
date accessioned2017-05-09T01:11:57Z
date available2017-05-09T01:11:57Z
date issued2014
identifier issn0094-9930
identifier otherpvt_136_03_031205.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/156136
description abstractCoke drums undergo cyclic operations typically in the temperature range from ambient temperature to about 500 آ°C (930 آ°F). During quenching, the coke drum is inevitably subjected to a rapid drop in temperature because cooling water is injected directly into the coke drum through the bottom inlet nozzle. The temperature profile on the shell surface is no more uneven in quenching, and can vary in each cycle of quenching operation. Such complicate thermal profile induces large strains in the shell portion of the coke drum, and eventually causes damage like bulging or cracking. This study makes investigations into the bulging behavior of the coke drum by the thermal elasticplastic FEanalysis. In this work, a feasible study is conducted on potential causes of bulging. As factors inducing a heterogeneous plasticity in the shell structure of the coke drum, the strength overmatch of welds and the uneven temperature field in quenching as well as quenching conditions are focused. The analytical result shows that strength overmatch in girth seam welds can be one of the causes of plastic distortion under one operating cycle. The lower rising rate of cooling source can induce plastic straining over the whole shell wall, which tends to induce more remarkable plastic distortion.
publisherThe American Society of Mechanical Engineers (ASME)
titleInvestigation of Bulging Behavior of Coke Drum: Feasible Study on Causes of Bulging
typeJournal Paper
journal volume136
journal issue3
journal titleJournal of Pressure Vessel Technology
identifier doi10.1115/1.4026046
journal fristpage31205
journal lastpage31205
identifier eissn1528-8978
treeJournal of Pressure Vessel Technology:;2014:;volume( 136 ):;issue: 003
contenttypeFulltext


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