Appeal No. 2005-0766
Application No. 09/877,277
concurrently in this reactor, contacting the thiophene in the
presence of a hydrogenation catalyst in the lower section of the
reactor to convert a portion of the thiophene to n-butyl
mercaptan and contacting the diolefins and mercaptans in the
presence of a Group VIII metal catalyst in the upper section of
the reactor thereby reacting a portion of the mercaptans with a
portion of the diolefins to form sulfide products and a
distillate product. Further details of this appealed subject
matter are set forth in representative independent claim 1 which
reads as follows:
1. A process for the desulfurization of a full
boiling range naphtha comprising the steps of:
(a) feeding (1) a full boiling range naphtha
containing olefins, diolefins, organic sulfur compounds
comprising mercaptans and thiophene and (2) hydrogen to a
first distillation column reactor;
(b) concurrently in said first distillation column
reactor:
(i) contacting the thiophene contained within said
full boiling range naphtha in the presence of a
hydrogenation catalyst in a first distillation reaction zone
in the lower section of said first distillation column
reactor to convert a portion of the thiophene to n-butyl
mercaptan,
2
Page: Previous 1 2 3 4 5 6 7 8 9 10 Next
Last modified: November 3, 2007