Method for preparing stabilized hydrocarbon oil blend

Patent metadata

Field	Value
Publication number	US-9624448-B2
Application number	US-201314395417-A
Country	US
Kind code	B2
Filing date	Apr 16, 2013
Priority date	Apr 17, 2012
Publication date	Apr 18, 2017
Grant date	Apr 18, 2017

Abstract

Disclosed herein are a method of preparing a hydrocarbon oil blend having superior storage stability using a novel stability prediction model that is quick, easy and reliable; and a method of predicting the stability of a hydrocarbon blend.

First claim

The invention claimed is:

1. A method of preparing a hydrocarbon blend by blending at least two hydrocarbon oils, comprising:
determining a stability factor of each of the at least two hydrocarbon oils; and
blending the at least two hydrocarbon oils so as to satisfy, based on the determined stability factor, a first mathematical formula,

∑

i
=
1

n

⁢

a
i

⁢

A
i

>
0

wherein a i is a stability factor of a hydrocarbon oil (i) in the blend, A i is wt % of the hydrocarbon oil (i) in the blend, and n indicates a number of hydrocarbon oils in the blend and is an integer of 2 or more,
(a) when a SPOT value of a hydrocarbon oil according to ASTM D 4740-02 is less than 2, the stability factor is determined by a second mathematical formula,
Stability Factor( a i )=1× B i −1

wherein B i is a minimum amount of the hydrocarbon oil (i) to be blended with 100 g of a reference sample having SPOT 5 so as to exhibit SPOT 1, and
(b) when a SPOT value of a hydrocarbon oil according to ASTM D 4740-02 is 2 or more, the stability factor is determined by a third mathematical formula,
Stability Factor( a i )=−(0.025× T i ×0.01)

wherein T i is a minimum amount of toluene to be blended with 100 g of the hydrocarbon oil (i) so as to exhibit SPOT 1.

2. A method of preparing a hydrocarbon blend by blending at least two hydrocarbon oils, comprising:
determining a stability factor of each of the at least two hydrocarbon oils; and
blending the at least two hydrocarbon oils so as to satisfy, based on the determined stability factor,
a first mathematical formula,

∑

i
=
1

n

⁢

a
i

⁢

A
i

>
0

wherein a i is a stability factor of a hydrocarbon oil (i) in the blend, A i is wt % of the hydrocarbon oil (i) in the blend, and n indicates a number of hydrocarbon oils in the blend and is an integer of 2 or more,
(a) when a SPOT value of a hydrocarbon oil according to ASTM D 4740-02 is less than 2, the stability factor is determined by a second mathematical formula,
Stability Factor( a i )=1× C i −1 ×0.828

wherein C i is a minimum amount of the hydrocarbon oil (i) to be blended with 100 g of a reference sample having SPOT 4 so as to exhibit SPOT 1, and
(b) when a SPOT value of a hydrocarbon oil according to ASTM D 4740-02 is 2 or more, the stability factor is determined by a third mathematical formula,
Stability Factor( a i )=−(0.025× T i ×0.01)

wherein T i is a minimum amount of toluene to be blended with 100 g of the hydrocarbon oil (i) so as to exhibit SPOT 1.

3. The method of claim 1 , wherein the hydrocarbon oils comprise crude oils, heavy oils having a gravity of 0.8 to 1.2 or mixtures thereof.

4. The method of claim 1 , wherein the hydrocarbon oils have an asphaltene content of 15 wt % or less.

5. The method of claim 1 , wherein the hydrocarbon oils have a sulfur content (ASTM D4294) of 5 wt % or less, a viscosity (ASTM D445/ASTM D2270) of 1 to 1500 mm 2 /s, a flash point (ASTM D92) of 30° C. or more, and a pour point (ASTM D97) of 40° C. or less.

6. The method of claim 5 , wherein the hydrocarbon oils have a nitrogen content of 5000 ppm or less and CCR (Conradson Carbon Residue) of 15 wt % or less.

7. The method of claim 1 , wherein the hydrocarbon oils are selected from the group consisting of LCO (light cycle oil), HCN (heavy catalytic cracked naphtha), SLO (slurry oil), H/S AR (high sulfur atmospheric residue), L/S AR (low sulfur atmospheric residue), t-LGO (treated light gas oil), RHDS t-AR (residue hydrodesulfurization treated atmospheric residue) and VRDS t-AR (vacuum residue desulfurization treated atmospheric residue).

8. The method of claim 1 , wherein n is 2 to 5.

9. A method of preparing a hydrocarbon blend by blending at least two hydrocarbon oils, comprising:
determining a stability factor of each of the at least two hydrocarbon oils to be blended; and
determining stability depending on whether the blend of the hydrocarbon oils satisfies, based on the determined stability factor,
a first mathematical formula,

∑

i
=
1

n

⁢

a
i

⁢

A
i

>
0

wherein a i is a stability factor of a hydrocarbon oil (i) in the blend, A i is wt % of the hydrocarbon oil (i) in the blend, and n indicates a number of hydrocarbon oils in the blend and is an integer of 2 or more,
(a) when a SPOT value of a hydrocarbon oil according to ASTM D 4740-02 is less than 2, the stability factor is determined by a second mathematical formula,
Stability Factor( a i )=1× B i −1

wherein B i is a minimum amount of the hydrocarbon oil (i) to be blended with 100 g of a reference sample having SPOT 5 so as to exhibit SPOT 1, and
(b) when a SPOT value of a hydrocarbon oil according to ASTM D 4740-02 is 2 or more, the stability factor is determined by a third mathematical formula,
Stability Factor( a i )=−(0.025× T i ×0.01)

wherein T i is a minimum amount of toluene to be blended with 100 g of the hydrocarbon oil (i) so as to exhibit SPOT 1, and
(c) blending the at least two hydrocarbon oils so as to satisfy the first mathematical formula based on the determined stability factor.

10. A method of preparing a hydrocarbon blend by blending at least two hydrocarbon oils, comprising:
determining a stability factor of each of the at least two hydrocarbon oils to be blended; and
determining stability depending on whether the blend of the hydrocarbon oils satisfies, based on the determined stability factor,
a first mathematical formula,

∑

i
=
1

n

⁢

Assignees

• Sk Innovation Co Ltd
• Sk Energy Co Ltd

Inventors

• Joo Chang Woo
• Lee Yun Hee
• Choi Ki Seok
• Kim Gwang Hyoun
• Kim Young Suk
• No Myoung Han
• Park Dong Wook
• Kim Eun Kyoung

Classifications

• C10G2300/304

  Pour point, cloud point, cold flow properties · CPC title

• C10G2300/20

  Characteristics of the feedstock or the products · CPC title

• C10L2290/24

  Mixing, stirring of fuel components · CPC title

• C10L2290/60

  Measuring or analysing fractions, components or impurities or process conditions during preparation or upgrading of a fuel · CPC title

• C10G2300/302

  Viscosity · CPC title