US3607718A
Expired / Lapsed
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Solvation and hydrogenation of coal in partially hydrogenated hydrocarbon solvents
Assignee: Kerr McGee Corp
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Filing: 1970-01-09
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Granted: 1971-09-21
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Expires: 1990-01-09
Abstract
Abstract Coal is solubilized and hydrogenated in partially hydrogenated hydrocarbon streams such as clarified slurry oil to produce a nonviscous solution which is readily deashed by settling or filtering. Both inorganic sulfur and organically combined sulfur are removed, and the deashed solubilized coal thus produced has a very low sulfur content. The invention is also useful for producing a hydrogenated solubilized coal solution which is suitable for use as a feedstock for a petroleum refinery, and valuable liquid hydrocarbon distillate products boiling, for example, within the gasoline, kerosene, naphtha, light fuel oil and gas oil ranges may be produced therefrom.
Inventors
- 👤 William M Leaders
- 👤 Jack W Roach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:59
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/06; C10G1/065
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
42 words
The process of claim 1 wherein the feedstock to be hydrogenated is prepared by solubilizing coal in a solvent other than the partially hydrogenated hydrocarbon solvent, and thereafter the solubilized coal is hydrogenated in the presence of the partially hydrogenated hydrocarbon solvent.
Claim 2
Dependent Claim
30 words
The process of claim 1 wherein each part by weight of the feedstock is hydrogenated in the presence of about 0.2-20 parts by weight of the partially hydrogenated hydrocarbon solvent.
Claim 3
Dependent Claim
26 words
The process of claim 1 wherein the feedstock is subjected to a temperature of aboUt 650*-900* F. in the presence of the partially hydrogenated hydrocarbon solvent.
Claim 4
Dependent Claim
44 words
The process of claim 1 wherein the hydrocarbon solvent contains polycyclic hydrocarbons having about 2-4 condensed benzene rings before partial hydrogenation, and at least one of said benzene rings is retained and 1-3 benzene rings are hydrogenated to produce naphthenic rings during partial hydrogenation.
Claim 5
Dependent Claim
18 words
The process of claim 1 wherein the partially hydrogenated hydrocarbon solvent is partially hydrogenated catalytic cracker slurry oil.
Claim 6
Dependent Claim
37 words
The process of claim 1 wherein each part by weight of the feedstock is subjected to a temperature of about 650*-900* F. in the presence of about 0.2-20 parts by weight of the partially hydrogenated hydrocarbon solvent.
Claim 7
Dependent Claim
18 words
The process of claim 7 wherein the partially hydrogenated hydrocarbon solvent is partially hydrogenated catalytic cracker slurry oil.
Claim 8
Dependent Claim
39 words
The process of claim 8 wherein each part by weight of the feedstock is subjected to a temperature of about 700*-850* F. in the presence of about 2-5 parts by weight of the partially hydrogenated catalytic cracker slurry oil.
Claim 9
Dependent Claim
23 words
The process of claim 1 wherein at least one light distillate fraction is separated from the hydrogenated feedstock subsequent to the hydrogenation step.
Claim 10
Dependent Claim
54 words
The process of claim 10 wherein at least one distillate fraction heavier than the said light fraction is subsequently separated from the hydrogenated feedstock, said heavier distillate fraction containing heavy gas oil and dehydrogenated hydrocarbon solvent, and said heavier distillate fraction is catalytically cracked to produce lower boiling products and catalytic cracker recycle stock.
Claim 11
Dependent Claim
38 words
The process of claim 11 wherein the catalytic cracker recycle stock is subjected to partial hydrogenation, and the partially hydrogenated catalytic cracker recycle stock thus prepared is used as a partially hydrogenated hydrocarbon solvent to hydrogenate additional feedstock.
Claim 12
Dependent Claim
109 words
The process of claim 1 wherein the hydrocarbon solvent contains a mixture of polycyclic hydrocarbons having about 2-4 condensed benzene rings before partial hydrogenation and at least one of said benzene rings is retained and 1-3 benzene rings are hydrogenated to produce naphthenic rings during partial hydrogenation, each part by weight of the feedstock is subjected to a temperature of about 650*-900* F. in the presence of about 0.2-20 parts by weight of the partially hydrogenated hydrocarbon solvent, and at least one light distillate fraction and at least one heavier distillate fraction are separated from the hydrogenated feedstock, said heavier distillate fraction containing gas oil and dehydrogenated hydrocarbon solvent.
Claim 13
Dependent Claim
18 words
The process of claim 13 wherein the partially hydrogenated hydrocarbon solvent is partially hydrogenated catalytic cracker slurry oil.
Claim 14
Dependent Claim
46 words
The process of claim 14 wherein said heavier distillate fraction is catalytically cracked to produce lower boiling products and catalytic cracker slurry oil, and the catalytic cracker slurry oil thus produced is partially hydrogenated and used as a partially hydrogenated hydrocarbon solvent to hydrogenate additional feedstock.
Claim 15
Dependent Claim
187 words
A process for hydrogenating and deashing coal comprising intimately contacting the coal in particulate form with a partially hydrogenated hydrocarbon solvent selected from the group consisting of partially hydrogenated catalytic cracker recycle stocks, thermally cracked stocks, and lubricating oil aromatic extracts to produce a solution containing solubilized hydrogenated coal and suspended insoluble material including ash, the partially hydrogenated hydrocarbon solvent being contacted with the coal at a temperature of about 550*-1,000* F. and at a solvent density of at least 0.5 g./cc., whereby hydrogen is released and the coal is solubilized therein and hydrogenated, the hydrocarbon solvent being subjected to partial hydrogenation prior to contacting it with the coal, the hydrocarbon solvent containing a mixture of polycyclic hydrocarbons having normal boiling points of about 425*-1,000* F. and at least two condensed benzene rings before the partial hydrogenation thereof, the partially hydrogenated hydrocarbon solvent containing a mixture of polycyclic hydrocarbons wherein at least one of the said condensed benzene rings is retained and hydrogen is added to at least one of the said condensed benzene rings adjacent thereto, and separating the insoluble material from the hydrogenated coal solution.
Claim 16
Dependent Claim
22 words
The process of claim 16 wherein the partially hydrogenated hydrocarbon solvent is contacted with the coal in the presence of elemental hydrogen.
Claim 17
Dependent Claim
27 words
The process of claim 16 wherein each part by weight of the coal is contacted with about 0.2-20 parts by weight of the partially hydrogenated hydrocarbon solvent.
Claim 18
Dependent Claim
24 words
The process of claim 16 wherein the coal is contacted with the partially hydrogenated hydrocarbon solvent at a temperature of at least 650* F.
Claim 19
Dependent Claim
47 words
The process of claim 16 wherein the hydrocarbon solvent contains a mixture of polycyclic hydrocarbons having about 2-4 condensed benzene rings before partial hydrogenation, and at least one of said benzene rings is retained and 1-3 benzene rings are hydrogenated to produce naphthenic rings during partial hydrogenation.
Claim 20
Dependent Claim
18 words
The process of claim 16 wherein the partially hydrogenated hydrocarbon solvent is partially hydrogenated catalytic cracker slurry oil.
Claim 21
Dependent Claim
45 words
The process of claim 16 wherein each part by weight of the coal is contacted in the presence of elemental hydrogen at a temperature of at least 650* F. with about 0.2-20 parts by weight of the partially hydrogenated hydrocarbon solvent for about 0.1-2 hours.
Claim 22
Dependent Claim
18 words
The process of claim 22 wherein the partially hydrogenated hydrocarbon solvent is partially hydrogenated catalytic cracker slurry oil.
Claim 23
Dependent Claim
51 words
The process of claim 23 wherein each part by weight of the coal is contacted with about 2-5 parts by weight of the partially hydrogenated catalytic cracker slurry oil in the presence of elemental hydrogen at a temperature of about 700*-850* F. and the solvent density is at least 0.6 g./cc.
Claim 24
Dependent Claim
19 words
The process of claim 16 wherein at least one light distillate fraction is separated from the hydrogenated coal solution.
Claim 25
Dependent Claim
53 words
The process of claim 25 wherein at least one distillate fraction heavier than said light fraction is subsequently separated from the hydrogenated coal solution, said heavier fraction containing heavy gas oil and dehydrogenated hydrocarbon solvent, and said heavy distillate fraction is catalytically cracked to produce lower boiling products and catalytic cracker recycle stock.
Claim 26
Dependent Claim
40 words
The process of claim 26 wherein the catalytic cracker recycle stock is subjected to partial hydrogenation, and the partially hydrogenated catalytic cracker recycle stock thus prepared is used as a partially hydrogenated hydrocarbon solvent to solubilize and hydrogenate additional coal.
Claim 27
Dependent Claim
128 words
The process of claim 16 wherein the hydrocarbon solvent contains a mixture of polycyclic hydrocarbons having about 2-4 condensed benzene rings before partial hydrogenation and at least one of said benzene rings is retained and 1-3 benzene rings are hydrogenated to produce naphthenic rings during partial hydrogenation, each part by weight of the coal is contacted for about 0.1-2 hours with about 0.2-20 parts by weight of the partially hydrogenated hydrocarbon solvent in the presence of elemental hydrogen and at a temperature of at least 650* F., the solvent density is at least 0.6 g./cc. and at least one light distiLlate fraction and at least one heavier distillate fraction are separated from the solution of hydrogenated coal, said heavier distillate fraction containing gas oil and dehydrogenated hydrocarbon solvent.
Claim 28
Dependent Claim
18 words
The process of claim 28 wherein the partially hydrogenated hydrocarbon solvent is partially hydrogenated catalytic cracker slurry oil.
Claim 29
Dependent Claim
65 words
The process of claim 29 wherein each part by weight of the coal is contacted with about 2-5 parts by weight of the partially hydrogenated catalytic cracker slurry oil, said heavier distillate fraction is catalytically cracked to produce lower boiling products and catalytic cracker slurry oil, and the catalytic cracker slurry oil thus produced is partially hydrogenated and used to solubilize and hydrogenate additional coal.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |