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Heat Exchanger Fouling and Cleaning VII
July 1-6, 2007 - Tomar, Portugal
| Editors: |
Hans Müller-Steinhagen, Institute of Technical Thermodynamics, German Aerospace Centre (DLR)
and Institute for Thermodynamics and Thermal Engineering, University of Stuttgart, Germany
M. Reza Malayeri, University of Stuttgart, Germany
A. Paul Watkinson, The University of British Columbia, Canada |
The articles for these proceedings are peer-reviewed.
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DESIGNING TWO-PHASE FLOW HEAT EXCHANGERS FOR MITIGATING FOULING
C.B. Panchal, E3Tec Service, LLC, 11865 Tall Timber Drive, Clarksville, MD 21029, USA
Blazo Ljubicic, Koch Heat Transfer Company, 12602 FM529, Hoston, TX 77041
ABSTRACT:
Significant progress has been made in
understanding the underlying mechanisms of
hydrocarbon fouling and characterizing the
effects of physical and chemical parameters in
single-phase flows. However, the interactive
effects of two-phase flows and fouling
mechanisms are poorly understood. Many of the
industrial heat exchangers in refining and
petrochemical processing operate under multiphase
flow conditions with varying flow
regimes. Fouling and localized corrosion are
generally experienced due to maldistribution of
vapor and liquid phases in such heat exchangers.
This is because design methods are inadequate
to determine localized process conditions that
could induce severe fouling locally, which could
also lead to localized corrosion by concentrating
corrosion species in the deposits. This paper
discusses design approaches to evaluate twophase
flow conditions and design exchangers to
minimize fouling. Such design approaches may
not be optimum for heat transfer and pressure
drop considerations; however, it will minimize
fouling and localized corrosion. The paper
focuses on improved design of feed/effluent
exchangers with tube side flows and reboilers
for minimizing shell-side fouling and a case
study is presented. The result is lower lifecycle
ownership cost of the exchanger.
C.B. Panchal and Blazo Ljubicic, "DESIGNING TWO-PHASE FLOW HEAT EXCHANGERS FOR MITIGATING FOULING" in "Heat Exchanger Fouling and Cleaning VII", Hans Müller-Steinhagen, Institute of Technical Thermodynamics, German Aerospace Centre (DLR)
and Institute for Thermodynamics and Thermal Engineering, University of Stuttgart, Germany
M. Reza Malayeri, University of Stuttgart, Germany
A. Paul Watkinson, The University of British Columbia, Canada
Eds, ECI
Symposium Series, Volume RP5 (2007). http://services.bepress.com/eci/heatexchanger2007/11
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