Back to results
US 11,597,883 B2Granted
Process for removing olefins from normal paraffins in an isomerization effluent stream
AssigneeUop LLC
InventorsMark Lapinski, Ram Ganesh Rokkam, Gregory Funk
Life of this patent
Estimating the term…
Abstract
Favorable isomerization conditions for producing normal paraffins can produce olefins. The process for separating normal paraffins from non-normal paraffins by adsorption has a limit on olefin concentration, so the olefins must be removed. We propose to remove olefins from the isomerization effluent stream that is recycled to the adsorption separation process.
Claims17
A process for increasing the concentration of normal paraffins in a feed stream comprising:
- separating a naphtha feed stream into a normal paraffin stream and a non-normal paraffin stream;
- isomerizing an isomerization feed stream taken from the non-normal paraffin stream over an isomerization catalyst to convert non-normal paraffins to normal paraffins and produce an isomerization effluent stream;
- removing olefins from said isomerization effluent stream to provide a recycle stream;
- and
- recycling said recycle stream to the step of separating a naphtha feed stream.
2 more elements
A process for increasing the concentration of normal paraffins in a feed stream comprising:
- separating a naphtha feed stream into a normal paraffin stream and a non-normal paraffin stream;
- isomerizing an isomerization feed stream taken from the non-normal paraffin stream over an isomerization catalyst to convert non-normal paraffins to normal paraffins and produce an isomerization effluent stream;
- saturating said isomerization effluent stream;
- and
- recycling said recycle stream to the step of separating a naphtha feed stream.
2 more elements
Dependencies are inferred from the claim text.