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US 2016/0101404 A1Published application
Process and apparatus for selectively hydrogenating naphtha
AssigneeUop LLC
InventorsAvnish Kumar, Steven F. Zink, Soumendra M. Banerjee
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Abstract
The process and apparatus of the present invention selectively hydrogenates a heavier olefinic naphtha stream in an upstream catalyst bed and the hydrogenated effluent and a lighter olefinic naphtha stream in a downstream catalyst bed. The heavier di-alkenes are less re-active and are contacted with more hydrogenation catalyst than the lighter di-alkenes which are more re-active.
Claims20
An apparatus for selective hydrogenation comprising:
- a fractionation column for producing a lighter naphtha stream at a lighter outlet and a heavy naphtha stream at a second outlet at a location in the column below the lighter outlet;
- and
- a selective hydrogenation reaction zone having a first inlet in downstream communication with the second outlet and a second inlet downstream of the first inlet and in downstream communication with the lighter outlet.
An apparatus for selective hydrogenation comprising:
- a fractionation column for producing an overhead naphtha stream at an overhead outlet, a lighter naphtha stream at a lighter outlet and a heavy naphtha stream at a second outlet at a location in the column below the lighter outlet;
- and
- a selective hydrogenation reaction zone having a first inlet in downstream communication with the second outlet and a second inlet downstream of the first inlet and in downstream communication with the lighter outlet.
An apparatus for selective hydrogenation comprising:
- a mercaptan reactor being in downstream communication with a source of alkaline;
- a fractionation column in downstream communication with said mercaptan reactor for producing a lighter naphtha stream at a lighter outlet and a heavy naphtha stream at a second outlet at a location in the column below the lighter outlet;
- and
- a selective hydrogenation reaction zone having a first inlet in downstream communication with the second outlet and a second inlet downstream of the first inlet and in downstream communication with the lighter outlet.
1 more element
Dependencies are inferred from the claim text.