US4201657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coal spray composition
Assignee: ConocoPhillips Co
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Filing: 1978-10-23
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Granted: 1980-05-06
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Expires: 1998-10-23
Abstract
Abstract A composition for treating particulate hydrocarbon fuel material such as coal and lignite to reduce dust losses, improve cold weather handling and reduce spontaneous combustion. The composition is a blend of aromatic hydrocarbon oil and asphalt and has a high viscosity, high flash point and high initial boiling point.
Inventors
- 👤 Ardis L. Anderson
- 👤 Marvin E. Huyser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:21
CPC Classifications
C; C10; C10L; C10L9/00; C10L9/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
68 words
A hydrocarbon composition comprising: (a) 50 to 75 volume percent decant oil from a fluidized bed catalytic cracking operation, said decant oil having a K factor of not more than 10.5; and (b) 50 to 25 volume percent asphalt; said composition having an initial boiling point above 500° F., a viscosity of at least 700 centistokes at 100° F., and a flash point of at least 230° F.
Claim 2
Dependent Claim
68 words
A hydrocarbon composition comprising: (a) 50 to 75 volume percent decant oil from a fluidized bed catalytic cracking operation, said decant oil having a K factor of not more than 10.5; and (b) 50 to 25 volume percent asphalt; said composition having an initial boiling point above 500° F., a viscosity of at least 700 centistokes at 100° F., and a flash point of at least 230° F.
Claim 3
Dependent Claim
19 words
The composition of claim 1 wherein the decant oil comprises 67 volume percent thereof with the balance being asphalt.
Claim 4
Dependent Claim
15 words
The composition of claim 1 wherein the initial boiling point thereof is about 550° F.
Claim 5
Dependent Claim
14 words
The composition of claim 1 wherein the flash point thereof is about 275° F.
Claim 6
Dependent Claim
16 words
The composition of claim 1 wherein the viscosity thereof is about 1500 centistokes at 100° F.
Claim 7
Dependent Claim
32 words
The composition of claim 1 wherein the viscosity thereof is about 1500 centistokes at 100° F., the flash point is about 275° F., and the K factor is from 10.0 to 10.2.
References Cited (Backward Citations)
US3476679A
Cited
US3462359A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-05-06 | 1983-11-05 | 1984-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-06 | 1987-11-05 | 1988-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-06 | 1991-11-05 | 1992-05-06 | $7700.00 | Window Closed / Lapsed |