US3617481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination deasphalting-coking-hydrotreating process
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1969-12-11
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Granted: 1971-11-02
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Expires: 1989-12-11
Abstract
Abstract A heavy hydrocarbon residuum is hydrotreated or deasphalted to form a heavy bottoms fraction in which the metals are concentrated. The high-metals fraction is coked to form coke containing the metals and the coke is activated by gasification to form water gas. The activated coke containing the metals, with or without fortification by additional catalytic elements is used as catalyst in a hydrotreating step which may be the hydrotreating step used to concentrate the metals or may be a separate step in which the raffinate with or without the coker gas oil is used as feed. The deasphalting step may be preceded by a vacuum distillation step in which additional gas oil may be formed which can be used as at least part of the feed to the hydrotreating step.
Inventors
- 👤 Alexis Voorhies Jr
- 👤 Glen P Hamner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:40
CPC Classifications
C; C10; C10J; C10J3/00; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/14; C10G45/16; C10G49/00; C10G49/007; C10G67/00; C10G67/02; C10G67/04; C10G67/0454; C10G67/0463; C10G69/00; C10G69/02; C10G69/06; C10J3/46; C10J3/48; C10J3/482; C10J3/72; C10J3/78; C10J3/82; C10J3/84; C10K; C10K3/00; C10K3/02; C10K3/04; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/093; C10J2300/0946; C10J2300/0953; C10J2300/0959; C10J2300/0973; C10J2300/0976; C10J2300/0983; C10J2300/0986; C10J2300/18; C10J2300/1807
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
116 words
A self-sustaining intEgrated process for the hydroprocessing of residual hydrocarbon fractions having a metals content of at least 50 p.p.m. which comprises hydrotreating said high-metals residuum in the presence of coke having a surface area of at least 50 square meters per gram and containing at least 0.5 percent by weight of metals derived from said residua, coking the effluent from said hydroprocessing step to form coke containing said metals and cracked hydrocarbons, subjecting said coke to treatment with steam and/or oxygen-containing gas to increase the surface area of said coke and produce water gas, recycling said activated coke and hydrogen from said water gas to said hydroprocessing step as the catalyst and hydrogen source respectively.
Claim 2
Dependent Claim
113 words
A self-sustaining integrated process for the hydroprocessing of residual hydrocarbon fractions having a metals content of at least 50 p.p.m. which comprises deasphalting a heavy residuum to form a raffinate and an extract containing the metal from said residuum, coking the extract from the deasphalting step to form coke containing said metals and cracked hydrocarbons, including a gas oil fraction, subjecting said coke to treatment with steam and/or oxygen-containing gas to increase the surface of said coke and produce water gas, and hydrotreating either or both the raffinate from the deasphalting step and the gas oil from the coking step in presence of the metals-containing coke from the coking step as a catalyst.
Claim 3
Dependent Claim
79 words
The process of claim 3 in which a residuum boiling 650* F.+ is subjected to vacuum distillation prior to the deasphalting step to separate at least a gas oil fraction and a bottom fraction boiling 1,050* F.+, using the bottoms fraction as feed to the deasphalting step and hydrotreating a mixture of the gas oil fraction from the vacuum distillation, the gas oil from the coking step and the raffinate from the deasphalting step with the said metals-containing coke.
Claim 4
Dependent Claim
32 words
The process of claim 1 wherein said activated coke employed in said hydroprocessing additionally contains a Group VB or VIB metal compound alone or in combination with a Group VIII metal compound.
Claim 5
Dependent Claim
23 words
The process of claim 5 wherein said Group VB or VIB metal compound is an oxide or sulfide of molybdenum, tungsten or vanadium.
Claim 6
Dependent Claim
20 words
The process of claim 6 wherein said Group VIII metal compound is an oxide or sulfide of nickel or cobalt.
Claim 7
Dependent Claim
27 words
The process of claim 1 wherein the treatment of said coke with steam and/or oxygen-containing gas is continued in the further presence of an alkali metal salt.
Claim 8
Dependent Claim
13 words
The process of claim 8 wherein said alkali metal salt is potassium carbonate.
Claim 9
Dependent Claim
15 words
The process of claim 1 wherein said hydroprocessing is conducted in the presence of steam.
Claim 10
Dependent Claim
32 words
The process of claim 2 wherein said activated coke employed in said hydrotreating additionally contains a Group VB or VIB metal compound alone or in combination with a Group VIII metal compound.
Claim 11
Dependent Claim
23 words
The process of claim 11 wherein said Group VB or VIB metal compound is an oxide or sulfide of molybdenum, tungsten or vanadium.
Claim 12
Dependent Claim
20 words
The process of claim 12 wherein said Group VIII metal compound is an oxide or sulfide of nickel or cobalt.
Claim 13
Dependent Claim
27 words
The process of claim 2 wherein the treatment of said coke with steam and/or oxygen-containing gas is continued in the further presence of an alkali metal salt.
Claim 14
Dependent Claim
13 words
The process of claim 14 wherein said alkali metal salt is potassium carbonate.
Claim 15
Dependent Claim
15 words
The process of claim 2 wherein said hydrotreating is conducted in the presence of steam.
References Cited (Backward Citations)
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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) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |