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http://dx.doi.org/10.7842/kigas.2017.21.3.1

A Study on the Rupture Disk Design and Application at the Two Phase Flow by Runaway Reaction at Batch Reactor  

Lee, Hyung-Sub (Professional Eng. Bureau, Korea Occupational Safety & Health (KOSHA))
Yun, Hee-Chang (Professional Eng. Bureau, Korea Occupational Safety & Health (KOSHA))
Publication Information
Journal of the Korean Institute of Gas / v.21, no.3, 2017 , pp. 1-8 More about this Journal
Abstract
The purpose of this study is to suggest the rupture disk design(size) and application at the two phase(gas-liquid) flow by runaway reaction at batch reactor. The definition of runaway reaction is abnormally exothermic reaction by the uncontrolled cooling water or deviated operating condition. As a result, the temperature of reactor is rapidly increasing. The causes of runaway reaction are either self-heating reaction or sleeper reaction. General methods of rupture disk size or safety valve are not suitable in the runaway reaction, because of temperature and pressure increasing rapidly in the reactor and the phases of relieving fluid is 2-phase flow. This study case of the reactor incident, the depressurization system such as safety valve and vent installed, however, the system did not relieved the pressure of reactor suitably. The orifice size of the safety valve were designed too small because the size had not been considered the phenomena and character of reaction. The batch reactor design should be considered by referring to the possibility of runaway reaction proposed in this study and the size of rupture disk design method considering 2-phase flow.
Keywords
Runaway reaction; Rupture disk; Two phase(2-Phase, Gas-Liquid Phase) flow;
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