Design of optimally safe recovery boilers against occurrence and consequences of internal explosions
| Autor: | H. Martikka, J. Simonen, I. Pöllänen |
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| Rok vydání: | 2006 |
| Předmět: | |
| Zdroj: | Structures Under Shock and Impact IX. |
| ISSN: | 1743-3509 1746-4498 |
| DOI: | 10.2495/su060231 |
| Popis: | The objects of study are recovery boilers. They are essential parts in the paper processing industry for burning chemicals into a more ecological form and for obtaining steam. One goal in the design of recovery boilers is to reduce the risks and consequences of water to melt explosion and the risk of inflammable gas explosions. The walls are orthotropic tubular laminates. One method to reduce risk is to improve local geometry and welding. Another is to consider the total structure and vent out the pressure peaks of explosion to the outside. Analytical optimum design methods using theory of orthotropic plates are used to obtain optimal ranges of main design variables and their physical effect on total reliability. The FEM program MSC Nastran is used to calculate in detail the elastic-plastic responses. The results show that damage risk can be minimised by redesigning critical joint areas and using optimally stiffeners. |
| Databáze: | OpenAIRE |
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