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http://dx.doi.org/10.9713/kcer.2016.54.3.350

Dynamic Modeling & Analysis of Vapor Phase Blowdown of Depressurized Vessel  

Kim, Kyungwoon (Graduate school of Chemistry and Chemical Engineering, Inha University)
Seo, Ji Won (Graduate school of Chemistry and Chemical Engineering, Inha University)
Hwang, Sungwon (Graduate school of Chemistry and Chemical Engineering, Inha University)
Lee, Yun Ju (Process System R&D group, Daewoo Shipbuilding & Marine Engineering Co. LTD.)
Moon, Young Sik (Process System R&D group, Daewoo Shipbuilding & Marine Engineering Co. LTD.)
Publication Information
Korean Chemical Engineering Research / v.54, no.3, 2016 , pp. 350-359 More about this Journal
Abstract
For accurate estimation over the change of pressure and temperature of the vessel during blowdown period, a new dynamic blowdown model was developed in this work. In particular, heat transfer from the vessel wall to discharge gas at both laminar or turbulent flow in the vessel was embedded to the model to increase the accuracy of blowdown estimation. For thermodynamics, the whole blowdown period was discretized into finite pressure decrement steps, and the step size was adjusted so that the calculation can be more efficiently carried out, while maintaining the model's accuracy. Both Peng-Robinson and Soave-Redlich-Kwong equation of states were applied to the model, and the results were compared each other. Finally, the simulation results was compared with Haque and coworkers' experimental results, and it proved high accuracy of the model.
Keywords
Dynamic blowdown modeling; Vessel blowdown; One-phase fluid; Empirical correlation;
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