Process for hydrogenation of macro- and microcrystalline paraffi

Details Process for hydrogenation of macro- and microcrystalline paraffi Process for hydrogenation of macro- and microcrystalline paraffi

1991-04-04

1993-04-27

Morris, Theodore

Mineral oils: processes and products

Paraffin wax; treatment or recovery

Chemical treatment

208 12, 208 57, G10G 7302, G10G 7338

Patent

active

052059235

ABSTRACT:
A hydrogenation process for the hydrogenation of macro- and microcrystalline feeds in a mixed bed is disclosed, the first bed containing a catalyst of the demetallization kind, while the second bed contains a hydrotreatment catalyst. During the operation with microcrystalline feed, after the decrease in Saybolt color index, macrocrystalline feed is substituted for microcrystalline feed, whereby is restored the bed catalytic activity which in turn allows the return to the microcrystalline feed, and successively, so that operation is continuous with high Saybolt color index levels maintained for extended periods.

REFERENCES:
patent: 3206387 (1965-09-01), Smilski et al.
patent: 3208931 (1965-09-01), Wood
patent: 4139494 (1979-02-01), Itoh et al.
patent: 4186078 (1980-01-01), Itoh et al.
patent: 4879265 (1989-11-01), Simpson et al.

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