Title:
REMOVAL OF BASIC NITROGEN COMPOUND FROM EXTRACTED OIL USING ACIDIC POLARITY ADSORBENT AND REGENERATION OF SAID ADSORBENT
Document Type and Number:
Japanese Patent JPS63200804
Kind Code:
A
Abstract:
Basic nitrogen compounds (BNC) are selectively removed from solvent extracted oils by adsorption of said BNC's by solid acidic polar adsorbents. The oils are extracted using any of the common extraction solvents, such as furfural, phenol, SO2, N-methyl-2-pyrrolidone (NMP), preferably NMP. The resulting raffinate, which contains the desirable oil fraction, has the BNC's present therein removed by adsorption thereof onto an adsorbent, characterized as being a solid, polar acidic adsorbent, exemplified by silica-alumina, a high alumina base amorphous cracking catalyst (such as manufactured by Ketjen/Akzo) and crystalline zeolite (such as H-Y zeolites) are effective adsorbents. The adsorbents may additionally contain fluorine or may contain up to 30 weight percent water. The adsorbents are regenerated by either purging with hydrogen at elevated temperature and pressure, or by washing the BNC saturated adsorbent with extraction process extraction solvent, such as NMP. Extracted oil raffinate treated with the adsorbent to remove BNC exhibit superior uninhibited oxidation stability as compared to untreated conventional hydrofined oil.
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Inventors:
KIISU CHIEN YAO
Application Number:
JP2783988A
Publication Date:
August 19, 1988
Filing Date:
February 10, 1988
Export Citation:
Assignee:
EXXON RESEARCH ENGINEERING CO
International Classes:
B01D15/00; B01J20/08; B01J20/34; C10G25/00; C10G53/08; C10G67/14; (IPC1-7): B01D15/00; B01J20/08; B01J20/34
Domestic Patent References:
| JPS5547103A | 1980-04-03 | |||
| JPS58159846A | 1983-09-22 | |||
| JPS588790A | 1983-01-18 |
Attorney, Agent or Firm:
Motohiro Kurauchi (1 outside)