Mineral oils: processes and products – Refining – Sulfur removal
Reexamination Certificate
2007-10-02
2007-10-02
Griffin, Walter D. (Department: 1764)
Mineral oils: processes and products
Refining
Sulfur removal
C208S211000, C208S086000, C208S089000, C208S097000, C208S092000, C208S015000
Reexamination Certificate
active
09807696
ABSTRACT:
Feed oil is subject to atmospheric distillation, to thereby be separated into light oil or light distillate and atmospheric residue oil. The light distillate is catalytically contacted with pressurized hydrogen in the presence of a catalyst, resulting in a first hydrotreating step being executed. In this instance, various fractions of the light distillate produced in the atmospheric distillation are subject to hydrotreating in a lump. The atmospheric residue oil is then separated into a light matter and a heavy matter. The light matter is subject to second hydrotreating in the presence of a catalyst to produce refined oil (light matter), which is mixed with refined oil produced in the first hydrotreating to prepare a mixture. The mixture is used as gas turbine fuel oil.
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Imura Kozo
Inomata Makoto
Mashiko Yoshinori
Okada Tsuyoshi
Sasaki Tomoyoshi
Griffin Walter D.
JGC Corporation
McDermott Will & Emery LLP
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