RESEARCH ARTICLE

Fundamental influences of particles on stirred and unstirred venting processes of foaming systems

  • Henrik LEIMEISTER ,
  • Jörg STEINBACH
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  • Department of Process Engineering, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany

Received date: 28 Mar 2014

Accepted date: 20 Apr 2014

Published date: 22 May 2014

Copyright

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg

Abstract

Venting is the common safety measure to protect plant equipment against excessive overpressure. So far, scenarios in which particles were part of the system and should have been accounted for did ignore their presence; the scenarios were treated like a two-phase system. Current research shows that particles can have a major influence on the venting behaviour. Experimental results indicate that particles affect level swell and relief flow especially of foamy systems. Based on those results four different layers of influence of the particle have been identified and are presented in a first model. Based on this model recommendations for the development of new and more complex models are given.

Key words: venting; multi-phase

Cite this article

Henrik LEIMEISTER , Jörg STEINBACH . Fundamental influences of particles on stirred and unstirred venting processes of foaming systems[J]. Frontiers of Chemical Science and Engineering, 2014 , 8(2) : 141 -148 . DOI: 10.1007/s11705-014-1423-0

1
DIERS. Technology Summary: Emergency Relief Systems for Runaway Chemical Reactions and Storage Vessels – A Summary of Multiphase Flow Methods. New York: American Institution on Chemical Engineering, 1986

2
SchmidtJ. Sizing of nozzles, venturis, orifices, control and safety valves for initially sub-cooled gas/liquid two-phase flow –The HNE-DS method. Forschung im Ingenieurwesen, 2007, 71(1): 47-58

3
DuhY S, HuK H, ChangJ C, KaoC S. Visualization of emergency viscous two-phase venting behaviours. Journal of Loss Prevention in the Process Industries, 2009, 22(2): 145-152

4
SuceT, ButlerC, HareJ, KerrD, RoyleM, WildayJ. Venting studies of the hydrolisis of acetic anhydride with and without surfactant. Unpublished report. United Kingdom: Health and Safety Executive, 1999

5
PoliM, ImhofH, HolstN, SteinbachJ. Venting of foaming three-phase systems. Chemical Engineering & Technology, 2008, 32(2): 312-318

6
HELL. Research Report 085: Reactor Pressure Relief of Fluids Containing Suspended Solids. Norwich: Health and Safety Executive, 2003

7
WaldramS, McIntoshR, EtchellsJ. Reactor pressure relief of fluids containing suspended solids. Process Safety Progress, 2006, 25(3): 214-226

8
ChenJ, LeeC, ChengC, ChouW, HoT. Pilot-scale study of multi-phase venting from a vessel at elevated pressure and temperature. Process Safety and Environmental Protection, 2000, 78(6): 434-444

9
PoliM, SteinbachJ. Influence of bubble nucleation on the pressure relief of non-reactive three-phase systems. Inzynieria Chemiczna I Procesowa, 2007, 28: 139-147

10
LeimeisterH, SteinbachJ. The influence of hydrophilic properties on the venting of foamy three phase systems. Process Safety Progress, 2013, 32(3): 239-243

11
LeimeisterH, SteinbachJ. Influences of silica beads on the venting of weakly and strongly foaming systems. Advanced Chemical Engineering Research, 2014, (in press)

12
MataC, JosephD. Foam control using a fluidized bed of hydrophobic particles. International Journal of Multiphase Flow, 1999, 25(1): 63-85

13
GuitiánJ, JosephD. How bubbly mixtures foam and foam control using a fluidized bed. International Journal of Multiphase Flow, 1998, 24(1): 1-16

14
TummalaN, ArgyrisD, StrioloA. A molecular dynamics study of sodium dodecyl sulfate (SDS) at the silica-water interface: pH effect. AIChE 100: Annual Meeting-Proceedings. Philadelphia, USA: AIChE, 2008

15
JasoS. Modeling and design of the fluidized bed reactor for the oxidative coupling of methane. Dissertation for the Doctoral Degree. Berlin: Technische Universität, 2012

16
ScheckerJ, FriedelL. Submodel for level swell with superimposed foaming in case of reactor depressurisation. Forschungim Ingenieurwesen, 2004, 69(1): 44-56

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