Title:
【発明の名称】水素化処理及び水素化異性化方法による含ろう留分及びラフィネートの品質向上
Document Type and Number:
Japanese Patent JP2758028
Kind Code:
B2
Abstract:
Waxy distillates, or raffinates containing from as little as 10% wax but more typically about 30% wax or more are upgraded by a process comprising the steps of hydrotreating the waxy oil under conditions which convert less than 20% of the feed into products boiling lower than the feed to reduce the sulfur and nitrogen content of the oil followed by hydroisomerizing the hydrotreated waxy oil to reduce the wax content and increase the viscosity index. This oil having a waxy content of less than 30%, preferably less than 25%, can now be more easily dewaxed using conventional solvent dewaxing procedures. The advantage of the present process resides in the increased yield and/or stability of oil as compared to other upgrading, dewaxing processes which convert wax to light products. The isomerization catalyst is preferably a low fluorine content catalyst, more preferably a noble metal on 0.1 to less than 2 wt% fluorine on alumina catalyst, most preferably a noble Group VIII metal (e.g Pt or Pd) on low fluorine content (less than 2 wt% fluorine) on small particle size alumina (less than 1/16 inch (1.5875 mm) diameter) catalyst. The most preferred alumina support is a 1/20 inch (1.27 mm) trilobe).
Inventors:
IAN ARUFURETSUDO KOODEII
DEIUITSUDO ROIDO BURAUN
DEIUITSUDO ROIDO BURAUN
Application Number:
JP15205089A
Publication Date:
May 25, 1998
Filing Date:
June 14, 1989
Export Citation:
Assignee:
EKUSON RISAACHI ANDO ENG CO
International Classes:
B01J27/12; B01J27/13; C10G65/04; C10G65/08; C10G67/04; B01J23/42; (IPC1-7): C10G67/04; C10G65/04
Domestic Patent References:
| JP5936194A |
Other References:
【文献】米国特許4518485(US,A)
Attorney, Agent or Firm:
Minoru Nakamura (8 outside)