Objective
As an alternative to the conventional technology of piping offshore natural gas onshore a number of studies has been performed investigating the on-site liquefaction or processing of natural gas by floating process plants. Still unsolved was the question of the performance of the columns used for various process operations under sea induced motion. For a safe and continuous operation of such plants it was absolutely necessary to clarify this problem.
From the tests the efficiency drop of separation columns on floating structures even under severe weather conditions can be predicted.
It has also been shown that a sea-induced motion is producing less damage than stationary inclination.
The results can be applied for the design of nearly all distillation and washing units mounted on floating platforms. In a special case boundary conditions as type of process, type of platform, production field a.s.o. has to be carefully considered.
(see also TH-03070-78-DE).
A packed distillation column and a column equipped with a special radial flow tray were tested on a motion simulator. For pilot scale experiments a very sensitive distillation system (toluene-methylcyclohexane) was used to determine the efficiencies of both types of column internals under various motion conditions. By using a random motion simulator table (owned by det norske veritas,oslo) movement in all six degrees of freedom could be produced. The simulator was controlled by computer programs containing statistical data of sea conditions, combined with the motion response of a floating structure, resulting in a realistic motion of this structure under different sea states. Norwegian companies took part in the activities as subcontractors.
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Programme(s)
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Funding Scheme
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Coordinator
8023 Hollriegelskreuth
Germany
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.