US3635814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic coal conversion process
Assignee: Atlantic Richfield Co
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Filing: 1970-11-25
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Granted: 1972-01-18
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Expires: 1990-11-25
Abstract
Abstract The hydroconversion of coal solids is accomplished at conversion conditions by bringing coal solids, molecular hydrogen and catalyst solids into contact in a reactor. The catalyst solids are comprised of catalytically active substance containing molybdenum on an alumina support material. The catalyst solids are in the size range between 3 and 200 mesh U.S. Sieve Series and have a pore volume of at least 0.015 milliliter (STP) per gram and an accessible pore distribution such that at least 50 percent of the pores are greater than 1,100 angstroms.
Inventors
- 👤 Robert W Rieve
- 👤 Harold Shalit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:03
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/28; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J35/00; B01J35/60; B01J35/66; B01J8/00; B01J8/18; B01J8/20; B01J8/22; C; C10; C10G; C10G1/00; C10G1/08; C10G1/086
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
83 words
The process of claim 1 wherein the coal solids are in the size range of from 8 mesh to 350 mesh and are fed to the reaction zone at a rate between 15 and 250 pounds per hour per cubic foot of said reaction zone, and hydrogen is fed to said reaction zone at a rate sufficient to maintain a hydrogen partial pressure in reaction zone between 400 and 4,000 p.s.i.a., said reaction zone being at a temperature between 750* and 1,000* F.
Claim 2
Dependent Claim
38 words
The process of claim 2 wherein the ratio of the rate at which the coal solids are fed to the reaction zone to the catalyst solids in said reaction zone is in the range between 0.5 and 5.0.
Claim 3
Dependent Claim
62 words
The process of claim 1 wherein the coal solids are prepared in a slurry with a liquid slurry agent in a mixing zone and the liquid slurry agent and said coal solids are passed upwardly through the reaction zone along with other reaction fluids at a velocity sufficient to maintain the catalyst solids in random motion in liquids in said reaction zone.
Claim 4
Dependent Claim
84 words
The process of claim 4 wherein the coal solids are in the size range of from 8 mesh to 350 mesh and are fed to the reaction zone at a rate between 15 and 250 pounds per hour per cubic foot of said reaction zone, and hydrogen is fed to said reaction zone at a rate sufficient to maintain a hydrogen partial pressure in reaction zone between 400 and 4,000 p.s.i.a., said reaction zone being at a temperature between 750* F. and 1,000* F.
Claim 5
Dependent Claim
38 words
The process of claim 5 wherein the ratio of the rate at which the coal solids are fed to the reaction zone to the catalyst solids in said reaction zone is in the range between 0.5 and 5.0.
Claim 6
Dependent Claim
19 words
The process of claim 5 wherein the slurry contains less than 70 percent coal solids by weight of slurry.
Claim 7
Dependent Claim
38 words
The process of claim 7 wherein the ratio of the rate at which the coal solids are fed to the reaction zone to the catalyst solids in said reaction zone is in the range between 0.5 and 5.0.
Claim 8
Dependent Claim
28 words
The process of claim 1 wherein the catalyst solids have an accessible pore distribution such that at least 50 percent of said pores are greater than 3,000 angstroms.
Claim 9
Dependent Claim
83 words
The process of claim 9 wherein the coal solids are in the size range of from 8 mesh to 350 mesh and are fed to the reaction zone at a rate between 15 and 250 pounds per hour per cubic foot of said reaction zone, and hydrogen is fed to said reaction zone at a rate sufficient to maintain a hydrogen partial pressure in reaction zone between 400 and 4,000 p.s.i.a., said reaction zone being at a temperature between 750* and 1,000* F.
Claim 10
Dependent Claim
38 words
The process of claim 10 wherein the ratio of the rate at which the coal solids are fed to the reaction zone to the catalyst solids in said reaction zone is in the range between 0.5 and 5.0.
Claim 11
Dependent Claim
62 words
The process of claim 9 wherein the coal solids are prepared in a slurry with a liquid slurry agent in a mixing zone and the liquid slurry agent and said coal solids are passed upwardly through the reaction zone along with other reaction fluids at a velocity sufficient to maintain the catalyst solids in random motion in liquids in said reaction zone.
Claim 12
Dependent Claim
83 words
The process of claim 12 wherein the coal solids are in the size range of from 8 mesh to 350 mesh and are fed to the reaction zone at a rate between 15 and 250 pounds per hour per cubic foot of said reaction zone, and hydrogen is fed to said reaction zone at a rate sufficient to maintain a hydrogen partial pressure in reaction zone between 400 and 4,000 p.s.i.a., said reaction zone being at a temperature between 750* and 1,000* F.
Claim 13
Dependent Claim
38 words
The process of claim 13 wherein the ratio of the rate at which the coal solids are fed to the reaction zone to the catalyst solids in said reaction zone is in the range between 0.5 and 5.0.
Claim 14
Dependent Claim
19 words
The process of claim 12 wherein the slurry contains less than 70 percent coal solids by weight of slurry.
Claim 15
Dependent Claim
38 words
The process of claim 15 wherein the ratio of the rate at which the coal solids are fed to the reaction zone to the catalyst solids in said reaction zone is in the range between 0.5 and 5.0.
References Cited (Backward Citations)
US3117921A
Cited
US3183180A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |