US5437693A
Expired / Lapsed
US
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Heavy oil emulsion fuel composition
Assignee: Kao Corp
•
Filing: 1994-03-08
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Granted: 1995-08-01
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Expires: 2014-03-08
Abstract
Abstract A heavy oil emulsion fuel composition which contains heavy oils, such as bitumen and asphalt, wherein the heavy oil emulsion fuel composition can be used as a substitute fuel for heavy fuel oils, and has an enhanced combustion efficiency to thereby reduce the content of soot, dust and nitrogen oxides after combustion, which comprises (a) 40 to 85% by weight of a heavy oil, (b) 10 to 40% by weight of water, (c) 0.1 to 5% by weight of a surfactant and (d) at least 0.1% by weight of at least one component selected from the group consisting of water-soluble compounds having in its molecule two or more hydroxyl groups, monohydric alcohols having 6 or more carbon atoms, and mixtures thereof.
Inventors
- 👤 Masanori Iizuka
- 👤 Takao Taniguchi
- 👤 Kazuo Isobe
- 👤 Sayuri Tamaki
- 👤 Tadakazu Yamashita
- 👤 Shinichi Satake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:33
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/32; C10L1/328
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
40 words
A heavy oil emulsion fuel composition comprising (a) a heavy oil, (b) water, (c) a surfactant and (d) a mixture of a water-soluble compound having two or more hydroxyl groups and a monohydric alcohol having 6 or more carbon atoms.
Claim 2
Dependent Claim
40 words
A heavy oil emulsion fuel composition comprising (a) a heavy oil, (b) water, (c) a surfactant and (d) a mixture of a water-soluble compound having two or more hydroxyl groups and a monohydric alcohol having 6 or more carbon atoms.
Claim 3
Dependent Claim
89 words
The heavy oil emulsion fuel composition according to claim 1, wherein the contents of (a) the heavy oil, (b) the water, (c) the surfactant and (d) the component selected from the group consisting of water-soluble compounds having in its molecule two or more hydroxyl groups, monohydric alcohols having 6 or more carbon atoms, and mixtures thereof are, based on the entire amount of components (a) to (d), 40 to 85% by weight, 10 to 40% by weight, 0.1 to 5% by weight and at least 0.1% by weight, respectively.
Claim 4
Dependent Claim
32 words
The heavy oil emulsion fuel composition according to claim 2, wherein the content of component (d) is 0.1 to 49.9% by weight based on the entire amount of components (a) to (d).
Claim 5
Dependent Claim
35 words
The heavy oil emulsion fuel composition according to claim 2, wherein component (d) is at least one component selected from the group consisting of water-soluble compounds having in its molecule two or more hydroxyl groups.
Claim 6
Dependent Claim
32 words
The heavy oil emulsion fuel composition according to claim 4, wherein the content of component (d) is 0.1 to 50% by weight based on the entire amount of components (a) to (d).
Claim 7
Dependent Claim
52 words
The heavy oil emulsion fuel composition comprising (a) heavy oil, (b) water, (c) a surfactant, (d) a mixture of a water-soluble compound having two or more hydroxyl groups and a monohydric alcohol having 6 or more carbon atoms, and (e) a water-soluble polymer having a molecular weight (Mw) of 10,000 or more.
Claim 8
Dependent Claim
52 words
The heavy oil emulsion fuel composition comprising (a) heavy oil, (b) water, (c) a surfactant, (d) a mixture of a water-soluble compound having two or more hydroxyl groups and a monohydric alcohol having 6 or more carbon atoms, and (e) a water-soluble polymer having a molecular weight (Mw) of 10,000 or more.
Claim 9
Dependent Claim
42 words
The heavy oil emulsion fuel composition according to claim 6, wherein the content of the water-soluble polymer having a molecular weight (Mw) of 10,000 or more is 0.005 to 3% by weight based on the entire amount of components (a) to (d).
Claim 10
Dependent Claim
18 words
The heavy oil emulsion fuel composition according to claim 1, wherein (c) the surfactant comprises a nonionic surfactant.
Claim 11
Dependent Claim
22 words
The heavy oil emulsion fuel composition according to claim 1, wherein (c) the surfactant comprises a nonionic surfactant and an anionic surfactant.
Claim 12
Dependent Claim
32 words
The heavy oil emulsion fuel composition according to claim 1, which further comprises at least one component selected from the group consisting of fats and oils, fatty acids and fatty acid esters.
Claim 13
Dependent Claim
47 words
The heavy oil emulsion fuel composition according to claim 10, wherein the content of the component selected from the group consisting of fats and oils, fatty acids and fatty acid esters is 1 to 50% by weight based on the entire amount of components (a) to (d).
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-07-31 | 1999-01-30 | 1999-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-07-31 | 2003-01-30 | 2003-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-07-31 | 2007-01-30 | 2007-08-01 | $7700.00 | Window Closed / Lapsed |