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US 9,624,448 B2Granted
Method for preparing stabilized hydrocarbon oil blend
AssigneesSK Innovation Co., Ltd., SK Energy Co., Ltd.
InventorsChang Woo Joo, Yun Hee Lee, Ki Seok Choi, Gwang Hyoun Kim, Young Suk Kim, Myoung Han No, Dong Wook Park, Eun Kyoung Kim
Life of this patent
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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.
Claims20
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 ai is a stability factor of a hydrocarbon oil (i) in the blend, Ai 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(ai)=1×Bi−1
- wherein Bi 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(ai)=−(0.025×Ti×0.01)
- wherein Ti is a minimum amount of toluene to be blended with 100 g of the hydrocarbon oil (i) so as to exhibit SPOT 1.
20 more elements
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 ai is a stability factor of a hydrocarbon oil (i) in the blend, Ai 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(ai)=1×Ci−1×0.828
- wherein Ci 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(ai)=−(0.025×Ti×0.01)
- wherein Ti is a minimum amount of toluene to be blended with 100 g of the hydrocarbon oil (i) so as to exhibit SPOT 1.
21 more elements
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 ai is a stability factor of a hydrocarbon oil (i) in the blend, Ai 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(ai)=1×Bi−1
- wherein Bi 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(ai)=−(0.025×Ti×0.01)
- wherein Ti 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.
22 more elements
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 ai is a stability factor of a hydrocarbon oil (i) in the blend, Ai 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(ai)=1×Ci−1×0.828
- wherein Ci 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(ai)=−(0.025×Ti×0.01)
- wherein Ti 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.
22 more elements
Dependencies are inferred from the claim text.