Design Of Optimally Safe Recovery Boilers
Against Occurrence And Consequences Of
Internal Explosions
Author(s)
H. Martikka, I. Pöllänen & J. Simonen
Abstract
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.
Keywords: protection of structures, blast loads, composite shells.
1 Introduction
Recovery boilers are essential parts in paper processing industry for burning
chemicals into more ecological form and for obtaining steam. One goal in design
of recovery boilers is to consider risks and consequences of water to steam
explosion and risk of inflammable gas explosion. Risk situations are controlled
Keywords
protection of structures, blast loads, composite shells.
Related Book
Other papers in this volume
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