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A SMALL PRESENTATION
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A Presentation on
Multilayer Pressure vessels
What is Multilayer ? Fabricated By consecutively shrink
Fitting multiple cylindrical shells over each other
Thickness of Individual shell =15~100 mm
Comply With ASME Sec VIII Div.1 or Div.2
Application of multiwall Pressure vessels
Fertilizer Industry(Ammonia convertor etc.)
Petrochemical Industry (Solution Adsorber etc.)
Petro refineries( Hydrocrackers etc.) Chemical Industry (HP Heat
Exchangers etc.)
Need For multiwall construction
New Development In Process Technology required Equipment to Operate at higher Pressure & temperature
Equipment Required To handle lethal Fluids containing Hydrogen, Ammonia etc.
Exponential Increase in Plant capacities
Cost Effective
Material for multiwall vessel
Carbon & low alloy steel Higher Strength quench & temped
material Solid alloy liner Backed by multiwall
shell
Advantages Material of different properties can be
used for inner layer & subsequent layers Thinner plates permit better
metallurgical control & superior structural homogeniety during manufacturing at mills.
Shrink fitting of multiwall induces compression in inner layers, which counters the pressure stress and thus creating additional reserve strength
Proposed Research work Calculation for Shrinkage Pressure Using
Mathematica & FEA. Optimization of shrinkage margin in Shell
Plates. FEA of Different Materials for multilayer
vessels. Thickness calculation & comparison B/w
ASME Sec VIII Div.1 & Div.2. Optimization for thickness of Each layer. Weld Strength calculation using FEA. Support Analysis for the Multi layer Vessel.
Industries In this Field In India L&T , Godrej and ISGEC
Hitachi Zosen Ltd. In International market only HITACHI,
Kellong Brown & Root, Toyo.
Thanks
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