Highly aromatic base oil and method for producing highly aromatic base oil

Patent metadata

Field	Value
Publication number	US-2016376510-A1
Application number	US-201615261003-A
Country	US
Kind code	A1
Filing date	Sep 9, 2016
Priority date	Mar 21, 2012
Publication date	Dec 29, 2016
Grant date	—

Abstract

A method for producing a highly aromatic base oil of the present invention includes a step of hydrorefining a clarified oil to obtain a highly aromatic base oil having an aromatic content of 50% by mass or more determined by a column chromatography analysis method. The step of hydrorefining a clarified oil is preferably performed under conditions of a hydrogen pressure of 5.0 to 20.0 MPa, a temperature of 280 to 400° C., a hydrogen oil ratio of 300 to 750 NL/L, and a space velocity of 0.3 to 2.0 h −1 . According to the present invention, a highly aromatic base oil used for rubber processing, asphalt reclamation and the like, and a novel method for producing a highly aromatic base oil can be provided.

First claim

1 . A method for producing a highly aromatic base oil comprising:
hydrorefining a clarified oil to obtain a hydrorefined oil; and fractionation-treating and/or adsorption-treating the hydrorefined oil to obtain a highly aromatic base oil having an aromatic content of 50% by mass or more determined by a column chromatography analysis method, a content of benzo(a)pyrene of 1 ppm by mass or less, and a total content of the following aromatic compounds 1) to 8): 1) benzo(a)pyrene, 2) benzo(e)pyrene, 3) benzo(a)anthracene, 4) chrysene, 5) benzo(b)fluoranthene, 6) benzo(j)fluoranthene, 7) benzo(k)fluoranthene, and 8) dibenzo(a,h)anthracene of 10 ppm by mass or less.

2 . The method for producing a highly aromatic base oil according to claim 1 , wherein the hydrorefining the clarified oil is performed under conditions of a hydrogen pressure of 5.0 to 20.0 MPa, a temperature of 280 to 400° C., a hydrogen oil ratio of 300 to 750 NL/L, and a space velocity of 0.3 to 2.0 h −1 .

3 . A method for producing a mixed-base oil comprising:
hydrorefining a clarified oil to obtain a hydrorefined oil; fractionation-treating and/or adsorption-treating the hydrorefined oil to obtain a highly aromatic base oil having an aromatic content of 50% by mass or more determined by a column chromatography analysis method, a content of benzo(a)pyrene of 1 ppm by mass or less, and a total content of the following aromatic compounds 1) to 8): 1) benzo(a)pyrene, 2) benzo(e)pyrene, 3) benzo(a)anthracene, 4) chrysene, 5) benzo(b)fluoranthene, 6) benzo(j)fluoranthene, 7) benzo(k)fluoranthene, and 8) dibenzo(a,h)anthracene of 10 ppm by mass or less; and mixing the highly aromatic base oil and one or more base oils selected from a mineral oil and a synthetic oil other than the highly aromatic base oil to obtain a mixed-base oil having an aromatic content of 50% by mass or more determined by a column chromatography analysis method, an aniline point of 100° C. or less, % C A of 20 to 80 according to ASTM D2140, a pour point of +10° C. or less, a glass-transition point of −30° C. to −60° C., a rate of aromatic carbon of 0.1 to 0.5, a content of benzo(a)pyrene of 1 ppm by mass or less, and a total content of the following aromatic compounds 1) to 8): 1) benzo(a)pyrene, 2) benzo(e)pyrene, 3) benzo(a)anthracene, 4) chrysene, 5) benzo(b)fluoranthene, 6) benzo(j)fluoranthene, 7) benzo(k)fluoranthene, and 8) dibenzo(a,h)anthracene of 10 ppm by mass or less.

4 . A highly aromatic base oil obtained by the producing method according to claim 1 , wherein
the highly aromatic base oil has an aromatic content of 50% by mass or more determined by a column chromatography analysis method, an aniline point of 60° C. or less, % C A of 30 to 80 according to ASTM D2140, a pour point of +10° C. or less, a glass-transition point of −30° C. to −60° C., and a rate of aromatic carbon of 0.1 to 0.7.

5 . A mixed-base oil comprising the highly aromatic base oil according to claim 4 and one or more base oils selected from a mineral oil and a synthetic oil other than the highly aromatic base oil, wherein
the mixed-base oil has an aromatic content of 50% by mass or more determined by a column chromatography analysis method, an aniline point of 100° C. or less, % C A of 20 to 80 according to ASTM D2140, a pour point of +10° C. or less, a glass-transition point of −30° C. to −60° C., and a rate of aromatic carbon of 0.1 to 0.5.

Assignees

• Jx Nippon Oil & Energy Corp

Inventors

• Morishima Yoshiyuki
• Ito Takashi

Classifications

• C10M2211/0206

  used as base material · CPC title

• C10M105/06

  aromatic · CPC title

• C10M105/52

  containing carbon, hydrogen and halogen only · CPC title

• C10G67/06

  including a sorption process as the refining step in the absence of hydrogen · CPC title

• C10G2400/30

  Aromatics · CPC title