Appeal No. 94-4210
Application 07/932,415
10. A system for the selective reduction of phenylacetylene
to styrene in a styrene stream contaminated with
phenylacetylene, said system comprising:
a single reactor vessel having a flow inlet at one end
and a flow outlet at the other end;
a first reduction catalyst bed in said reactor vessel
near the flow inlet;
a hydrogen injector upstream of said first catalyst bed
arranged to inject hydrogen into said styrene
stream;
a second reduction catalyst bed in said reactor vessel
downstream from said first catalyst bed and near
said flow outlet; and
a second hydrogen injector in said reactor vessel
between said two catalyst beds.
12. A system for the reduction of phenylacetylene in
styrene, said system comprising:
a first reactor vessel having a flow inlet, a flow
outlet, and a reduction catalyst bed therein;
a second reactor vessel having a flow inlet
communicating with the flow outlet of said first
vessel, and further having a reduction catalyst
bed therein;
a first hydrogen injector for injecting hydrogen into
said first reactor vessel upstream of said
catalyst bed therein; and
a second hydrogen injector for injecting hydrogen into
said second reactor vessel upstream of said
catalyst bed therein.
Discussion
While the examiner has rejected Claims 10 and 13 under
35 U.S.C. ~ 112, second paragraph, the examiner does not explain
why persons having ordinary skill in the art would have had
- 3 -
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 Next
Last modified: November 3, 2007