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LP OxoSM Low Pressure Oxo Process Technology Process Advantages |
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Butyraldehyde is synthesized in the liquid phase in a high ratio of normal to iso-butyraldehyde, typically between 10-20:1. This is particularly significant when the desired end product is 2-ethylhexanol and the co-production of iso-butyraldehyde is to be minimized. The very moderate operating conditions used for hydroformylation ensure that the selectivity to butyraldehydes in the conversion of propylene is high. The total formation of by-products is a very small percent of the propylene feed with no detectable formation of by-products that can complicate product distillation or create environmental issues. Propylene efficiencies to mixed butyraldehyde as high as 97.5% have been demonstrated at commercial scale with commercially available feedstocks. The propylene efficiency achievable is a function of feedstock purity, since a higher purity feed gives higher efficiencies due to lower purge losses. The quality of the refined product 2-ethylhexanol and butanols can meet the industry's most stringent specifications and quality standards worldwide. The simple flowsheet, moderate operating conditions and absence of exotic materials of construction result in lower investment costs and higher on-stream times when compared to other processes. Energy costs have been optimized, and operating experience, together with on-going research and development, have resulted in optimum catalyst life, simplified process operation and minimal product treating. The LP Oxo Process is also easy to operate. The continuing success of the DPT/Dow Oxo Process owes much to the focused R&D programs conducted by DPT and Union Carbide and continued by Dow, and the strong process engineering and project design resources of DPT. Today, about 60% of the world's normal-butyraldehyde is produced in plants employing the LP Oxo Process.
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