Process for the production of paraffinic middle distillates

Details Process for the production of paraffinic middle distillates Process for the production of paraffinic middle distillates

2008-09-23

2008-09-23

Caldarola, Glenn (Department: 1797)

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural serial stages of chemical conversion

C208S089000, C208S108000, C208S950000

Reexamination Certificate

active

10481878

ABSTRACT:
A process with an increased efficiency for the preparation of middle distillates with excellent properties at low temperatures and substantially without oxygenated organic compounds, starting from a synthetic mixture of hydrocarbons at least partly waxy, containing a fraction of alcohols, comprising the separation of the mixture into a low-boiling fraction and a high-boiling fraction; the subsequent hydrogenation of the low-boiling fraction under such conditions as to avoid any substantial variation in its average molecular weight; the joining of at least a part of the hydrogenated fraction with said high-boiling fraction, and the subsequent catalytic hydrocracking treatment of the mixture of hydrocarbons thug formed, to obtain a substantial conversion of the waxy part into middle distillate.

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patent: 2004/0206667 (2004-10-01), Calemma et al.
U.S. Appl. No. 10/563,449, filed Jan. 3, 2006, Calemma et al.

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