Mineral oils: processes and products – Refining – Sulfur removal
Reexamination Certificate
2008-04-01
2008-04-01
Nguyen, Tam M. (Department: 1797)
Mineral oils: processes and products
Refining
Sulfur removal
C209S213000, C209S212000, C209S213000, C209S210000, C585S259000, C585S260000, C585S264000
Reexamination Certificate
active
07351327
ABSTRACT:
A process for concurrently fractionating and treating a full range naphtha stream. The full boiling range naphtha stream is first subjected to simultaneous thioetherification and splitting into a light boiling range naphtha, an intermediate boiling range naphtha and a heavy boiling range naphtha. The intermediate boiling range naphtha containing thiophene and thiophene boiling range mercaptans is passed on to a polishing hydrodesulfurization reactor where a low sulfur, low olefin gas oil is concurrently fed to the polishing reactor to insure that a liquid phase is present.
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Groten Willibrord A.
Podrebarac Gary G.
Smith, Jr. Lawrence A.
Catalytic Distillation Technologies
Nguyen Tam M.
Osha & Liang LLP
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