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Today, UOP remains at the forefront of this technology, offering a broad range of processing options for light naphtha (C5/C6) including upgrading of low octane streams and elimination of benzene.
We offer two Isomerization options to meet your needs. The UOP Penex¢â process and the UOP Par-Isom¢â process are fixed-bed processes that
improve the octane of C5/C6 streams by isomerizing normal components to branched components using
UOP¡¯s high-activity catalysts. The reaction conditions promote isomerization and minimize hydrocracking.
These processes are capable of saturating Benzene and can be incorporated into a variety of processing schemes to upgrade low octane C5/C6 streams to products with octane ranging from 80 RONC up to 93 RONC. There are three common options:
- Hydrocarbon Once-through – the light naphtha passes through the isomerization reactor only once. Normal paraffins are converted to iso paraffins but the conversion is limited by equilibrium. Typical product octanes are in the 80-84 RONC range.
- Isomerization/DIH – A de-isohexanizer is used to recover and recycle unconverted normal hexane and low octane hexane isomers to the reactor system. RONC values of 87-89 can be achieved.
- DIP/Isomerization/Super DIH – Using a de-isopentanizer upstream of the Isomerization reactor to remove isopentane and a de-ioshexanizer downstream to recover and recycle low octane hexanes, RONC values of 90-93 can be achieved.