US4050742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transporting heavy fuel oil as a slurry
Assignee: Marathon Oil Co
•
Filing: 1976-11-04
•
Granted: 1977-09-27
•
Expires: 1996-11-04
Abstract
Abstract Heavy fuel oil having an average pour point above the average minimum temperature of a transporting system is effectively transported by first physically separating the heavy fuel oil into two portions, fractionating the first portion into a relatively low pour point fraction and a relatively high pour point fraction, recombining the relatively low pour point fraction with the second portion, congealing the second portion to form particles, coating the congealed particles with the relatively high pour point fraction and thereafter slurrying the coated, congealed particles in a carrier liquid, preferably water, and transporting the slurry in a transportation system, preferably a pipeline.
Inventors
- 👤 Raymond H. Hughes
- 👤 Carl D. Clay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:44
CPC Classifications
F; F17; F17D; F17D1/00; F17D1/08; F17D1/088; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
115 words
A process for transporting heavy fuel oil as a slurry in water, the process comprising: a. separating the heavy fuel oil into a first portion and a second portion; b. fractionating the first portion into a relatively low pour point fraction and a relatively high pour point fraction; c. recombining the relatively low pour point fraction with the second portion; d. substantially congealing at least a portion of the second portion of the heavy fuel to obtain congealed particles of the heavy fuel oil; e. coating the congealed particles with the relatively high pour point fraction; f. slurrying the coated, congealed particles in a carrier liquid; and g. transporting the slurry in a transportation system.
Claim 2
Dependent Claim
115 words
A process for transporting heavy fuel oil as a slurry in water, the process comprising: a. separating the heavy fuel oil into a first portion and a second portion; b. fractionating the first portion into a relatively low pour point fraction and a relatively high pour point fraction; c. recombining the relatively low pour point fraction with the second portion; d. substantially congealing at least a portion of the second portion of the heavy fuel to obtain congealed particles of the heavy fuel oil; e. coating the congealed particles with the relatively high pour point fraction; f. slurrying the coated, congealed particles in a carrier liquid; and g. transporting the slurry in a transportation system.
Claim 3
Dependent Claim
46 words
The process of claim 1 wherein: a. the first portion comprises an average of about 1% to about 10% by volume of the heavy fuel oil; and b. the second portion comprises an average of about 90% to 99% by volume of the heavy fuel oil.
Claim 4
Dependent Claim
11 words
The process of claim 1 wherein congealation is effected by prilling.
Claim 5
Dependent Claim
13 words
The process of claim 1 wherein the carrier liquid is an aqueous liquid.
Claim 6
Dependent Claim
12 words
The process of claim 1 wherein the transportation system is a conduit.
Claim 7
Dependent Claim
21 words
The process of claim 1 wherein the slurry remains stabilized in a transportation system at temperatures up to about 50° C.
References Cited (Backward Citations)
US3468986A
Cited
US3456987A
Cited
US3804752A
Cited
US3846279A
Cited
US3900391A
Cited
US3853356A
Cited
US3900041A
Cited
US3880177A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-26 | 1981-03-28 | 1981-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-26 | 1985-03-28 | 1985-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-26 | 1989-03-28 | 1989-09-27 | $7700.00 | Window Closed / Lapsed |