Title:
METHOD OF REFINING LIGHT OIL AND METHOD OF PRODUCING C8 AROMATIC HYDROCARBON
Document Type and Number:
Japanese Patent JP2017193662
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To improve yield of C8 aromatic hydrocarbon while suppressing energy usage in a crude light oil refinery process.SOLUTION: A method of refining a light oil is provided that includes: an extraction step, in an extraction tower, of performing liquid-liquid extraction on hydrogenated and desulfurized crude light oil using a solvent and separating fatty acid hydrocarbon from the crude light oil to obtain a first extraction oil; an extraction distillation step, in an extraction distillation tower, of extracting and distilling the first extraction oil and separating fatty acid hydrocarbon from the first extraction oil to obtain a second extraction oil; a distillation step, in an aroma recovery tower, of distilling the second extraction oil and separating the solvent from the second extraction oil to obtain a C6 to C8 mixture; a distillation step, in a BTX distillation tower, of distilling a C6 to C8 mixture to separate C6, C7 and C8 aromatic hydrocarbon; and a step of supplying the solvent separated in the distillation step performed in the aroma recovery tower to the extraction tower. In the distillation step in the aromatic recovery tower, a reflux ratio is set to be 0.35 to 0.44.SELECTED DRAWING: Figure 1
Inventors:
ANZAI KAI
Application Number:
JP2016085492A
Publication Date:
October 26, 2017
Filing Date:
April 21, 2016
Export Citation:
Assignee:
JFE CHEMICAL CORP
International Classes:
C10G53/04; C10G21/00
Attorney, Agent or Firm:
Kenji Sugimura
Keisuke Kawahara
Masaki Kato
Keisuke Kawahara
Masaki Kato