US4207168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of pyrolysis fuel oil
Assignee: Lummus Technology LLC
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Filing: 1978-07-07
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Granted: 1980-06-10
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Expires: 1998-07-07
Abstract
Abstract A pyrolysis fuel oil (black oil) is contacted with a promoter liquid having a 5 volume percent distillation temperature of at least 250° F. and a 95 volume percent distillation temperature of at least 350° F. and no greater than about 750° F., with the liquid having a characterization factor of at least 9.75 to promote the separation of quinoline insolubles and asphaltenes from the fuel oil. A fraction free of quinoline insolubles and having a reduced content of asphaltenes may be subjected to coking to produce a needle coke, or employed directly for the production of carbon black.
Inventors
- 👤 Andre A. Simone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:15
CPC Classifications
C; C10; C10G; C10G21/00; C10G21/003; C10B; C10B55/00; C10G2300/00; C10G2300/10; C10G2300/107
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
157 words
A process for treating a pyrolysis fuel oil containing asphaltenes, said pyrolysis fuel oil being a heavy residual black oil boiling above pyrolysis gasoline produced as byproduct in the steam cracking of virgin petroleum fractions to ethylene, comprising: contacting said pyrolysis fuel oil with a petroleum fraction liquid promoter which enhances and promotes the separation of asphaltenes from said pyrolysis fuel oil, said liquid promoter having a 5 volume percent distillation temperature of at least about 310° F. and a 95 volume percent distillation temperature of at least about 350° F. and no greater than about 750° F., said liquid having a characterization factor of at least 9.75; and separating by gravity settling a liquid overflow of a pyrolysis fuel oil fraction having a reduced quantity of asphaltene, which is free of quinoline insolubles, from a liquid underflow of a pyrolysis fuel oil fraction having an increased quantity of asphaltene, said underflow and overflow including liquid promoter.
Claim 2
Dependent Claim
157 words
A process for treating a pyrolysis fuel oil containing asphaltenes, said pyrolysis fuel oil being a heavy residual black oil boiling above pyrolysis gasoline produced as byproduct in the steam cracking of virgin petroleum fractions to ethylene, comprising: contacting said pyrolysis fuel oil with a petroleum fraction liquid promoter which enhances and promotes the separation of asphaltenes from said pyrolysis fuel oil, said liquid promoter having a 5 volume percent distillation temperature of at least about 310° F. and a 95 volume percent distillation temperature of at least about 350° F. and no greater than about 750° F., said liquid having a characterization factor of at least 9.75; and separating by gravity settling a liquid overflow of a pyrolysis fuel oil fraction having a reduced quantity of asphaltene, which is free of quinoline insolubles, from a liquid underflow of a pyrolysis fuel oil fraction having an increased quantity of asphaltene, said underflow and overflow including liquid promoter.
Claim 3
Dependent Claim
30 words
The process of claim 1 wherein the promoter liquid is added in an amount to provide a promoter liquid to pyrolysis fuel oil weight ratio of from 0.3:1 to 5:1.
Claim 4
Dependent Claim
22 words
The process of claim 2 wherein the promotor liquid has a 95 volume percent distillation temperature of no greater than 600° F.
Claim 5
Dependent Claim
24 words
The process of claim 2 wherein the pyrolysis fuel oil fraction recovered in said overflow contains at least 50% of the pyrolysis fuel oil.
Claim 6
Dependent Claim
26 words
The process of claim 4 wherein the pyrolysis fuel oil fraction recovered in said overflow has an asphaltene content of no greater than 6%, by weight.
Claim 7
Dependent Claim
25 words
The process of claim 2 wherein at least a portion of the pyrolysis fuel oil fraction recovered in said overflow is coked to needle coke.
Claim 8
Dependent Claim
14 words
The process of claim 6 wherein said needle coke is produced by delayed coking.
Claim 9
Dependent Claim
28 words
The process of claim 7 wherein the pyrolysis fuel oil fraction which is to be coked is heat soaked in the presence of sulfur prior to the coking.
Claim 10
Dependent Claim
26 words
The process of claim 7 wherein at least a portion of the pyrolysis fuel oil fraction recovered in said underflow is coked to anode grade coke.
Claim 11
Dependent Claim
23 words
The process of claim 6 wherein the promotor liquid has a 95 volume percent distillation temperature of no greater than about 600° F.
Claim 12
Dependent Claim
17 words
The process of claim 10 wherein the promotor liquid has a characterization factor of less than 12.0.
Claim 13
Dependent Claim
24 words
The process of claim 11 wherein the pyrolysis fuel oil fraction recovered in said overflow contains at least 50% of the pyrolysis fuel oil.
Claim 14
Dependent Claim
26 words
The process of claim 12 wherein the pyrolysis fuel oil fraction recovered in said overflow has an asphaltene content of no greater than 6%, by weight.
Claim 15
Dependent Claim
30 words
The process of claim 13 wherein the promotor liquid is added in an amount to provide a promotor liquid to pyrolysis fuel oil weight ratio of from 1:1 to 2:1.
Claim 16
Dependent Claim
26 words
The process of claim 14 wherein the pyrolysis fuel oil fraction recovered in said overflow has an asphaltene content of no greater than 1%, by weight.
Claim 17
Dependent Claim
21 words
The process of claim 13 wherein said gravity settling is effected at a temperature of from 50° C. to 300° C.
Claim 18
Dependent Claim
28 words
The process of claim 2 wherein at least a portion of the pyrolysis fuel oil fraction recovered in said overflow is employed for the production of carbon black.
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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) | 1983-06-10 | 1983-12-10 | 1984-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-10 | 1987-12-10 | 1988-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-10 | 1991-12-10 | 1992-06-10 | $7700.00 | Window Closed / Lapsed |