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Dehydration of Paraffin to Light Olefins

This early process is very capital and maintenance intensive and spurred improvements to catalysts and technology. The Oleflex process (UOP) has been commercialised to dehydrogenate propane to propylene using a platinum supported catalyst. Philips has developed a process using steam as a diluent and uses a tin-platinum catalyst. [Pg.187]

The first figure illustrates that ethane and propane dehydrogenation becomes favourable at temperatures over about 900 K under ambient pressures. For the conversion of butane (C4) to butadiene (BD), higher temperatures are required. [Pg.188]

Since the conversion of paraffins to olefins is accompanied by an increase in volume, higher conversions are improved at lower pressures. This is achieved by either using low pressure converters or diluting the feed in a large volume of steam. Furthermore, the reaction is very endothermic as illustrated in the second figure, so a large amount of reaction heat has to be provided. [Pg.189]

Product gases are passed to separators. For butadiene there is a wash step to remove heavy by-products (2), this is omitted in the Catofin versions of the process. The product gases are passed to a compressor [Pg.190]

The catalyst progressively cokes and this is handled by continually moving the catalyst through the system until it is finally passed to regenerator unit (2). Regenerated catalyst is passed to the beginning of the process. [Pg.191]


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Light paraffins

Of dehydrated

Olefins dehydration

Olefins paraffins

To light

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