US3844933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroconversion of coal-derived oils
Assignee: HRI Inc
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Filing: 1972-10-16
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Granted: 1974-10-29
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Expires: 1992-10-16
Abstract
Abstract The conversion of coal-derived oils such as coal extract by ebullated bed reactor processing with hydrogen using a unique macroporous microspheroidal catalyst is accomplished to the extent of 80 percent or more conversion of the 975*F plus boiling range material to useful products having less than 975*F boiling range.
Inventors
- 👤 S Alpert
- 👤 R Wolk
- 👤 M Chervenak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:28
CPC Classifications
C; C10; C10G; C10G49/00; C10G49/10; C10G49/16
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
192 words
A METHOD FOR HYDROCONVERSION OF COAL-DERIVED OIL HAVING IN THE ORDER OF MORE THAN 50 WEIGHT PERCENT BOILING ABOVE 975*F AND AT LEAST 0.1 WEIGHT PERCENT ASH TO CONVERT IN EXCESS OF SIXTY PERCENT OF THAT BOILING ABOVE 975*F TO A FRACTION BOILING BELOW 975*F, WHEREIN THE OIL IS HEATED AND PASSED UPFLOW THROUGH A REACTION ZONE UNDER A HYDROGEN PARTIAL PRESSURE OF 2,000 TO 3,500 PSI AND AT A TEMPERATURE OF 750*-950*F AND CONTAINING A PARTICULATE CATALYST, THE UPFLOW VELOCITY BEING SUCH AS TO PLACE THE CATALYST IN RANDOM MOTION IN THE LIQUID IN THE REACTION ZONE, THE IMPROVEMENT WHICH COMPRISES: A. USING A PARTICULATE MICROSPHEROIDAL CATALYST HAVING A RELATIVELY CLOSE PARTICLE SIZE IN THE RANGE OF 40-325 MESH, AT LEAST 75 PERCENT OF WHICH IS IN THE 50-200 MESH (USS) SIZE; AND B. SELECTING THE CATALYST FROM THE HYDROGENATION GROUP INCLUDING COBALT MOLYBDATE ON ALUMINA, NICKEL MOLYBDATE ON ALUMINA, AND MIXTURES THEREOF, AND HAVING A TOTAL PORE VOLUME OF 0.30 TO 0.70 CC/GM, OF WHICH 0.20 TO 0.40 CC/GM IS IN PORES LARGER THAN 250 ANGSTROMS EFFECTIVE DIAMETER AND 0.10 TO 0.30 CC/GM IS IN PORES SMALLER THAN 250 ANGSTROMS.
Claim 2
Independent Claim
192 words
A METHOD FOR HYDROCONVERSION OF COAL-DERIVED OIL HAVING IN THE ORDER OF MORE THAN 50 WEIGHT PERCENT BOILING ABOVE 975*F AND AT LEAST 0.1 WEIGHT PERCENT ASH TO CONVERT IN EXCESS OF SIXTY PERCENT OF THAT BOILING ABOVE 975*F TO A FRACTION BOILING BELOW 975*F, WHEREIN THE OIL IS HEATED AND PASSED UPFLOW THROUGH A REACTION ZONE UNDER A HYDROGEN PARTIAL PRESSURE OF 2,000 TO 3,500 PSI AND AT A TEMPERATURE OF 750*-950*F AND CONTAINING A PARTICULATE CATALYST, THE UPFLOW VELOCITY BEING SUCH AS TO PLACE THE CATALYST IN RANDOM MOTION IN THE LIQUID IN THE REACTION ZONE, THE IMPROVEMENT WHICH COMPRISES: A. USING A PARTICULATE MICROSPHEROIDAL CATALYST HAVING A RELATIVELY CLOSE PARTICLE SIZE IN THE RANGE OF 40-325 MESH, AT LEAST 75 PERCENT OF WHICH IS IN THE 50-200 MESH (USS) SIZE; AND B. SELECTING THE CATALYST FROM THE HYDROGENATION GROUP INCLUDING COBALT MOLYBDATE ON ALUMINA, NICKEL MOLYBDATE ON ALUMINA, AND MIXTURES THEREOF, AND HAVING A TOTAL PORE VOLUME OF 0.30 TO 0.70 CC/GM, OF WHICH 0.20 TO 0.40 CC/GM IS IN PORES LARGER THAN 250 ANGSTROMS EFFECTIVE DIAMETER AND 0.10 TO 0.30 CC/GM IS IN PORES SMALLER THAN 250 ANGSTROMS.
Claim 3
Dependent Claim
23 words
The method of claim 1, wherein multiple staged reactors are used to achieve at least 80 percent conversion of the coal-derived feed material.
Claim 4
Dependent Claim
24 words
The method of claim 1, wherein the coal-derived oil feed material is diluted with a gas oil boiling range material made in the process.
Claim 5
Dependent Claim
21 words
The method of claim 1, wherein the coal-derived oil is a coal extract having an ash content of 1.5-2.5 weight percent.
Claim 6
Dependent Claim
55 words
The method for the hydroconversion of coal extract according to claim 4, wherein the microspheroidal catalyst has a total pore Volume of 0.40-0.55 cc/gm, of which 0.25-0.35 cc/gm is in pores larger than 250 Angstrom diameter and 0.15-0.20 cc/gm is in pores smaller than 250 Angstrom diameter, and the catalyst bulk density is 0.7-0.8 gm/cc.
References Cited (Backward Citations)
US3622500A
Cited
US3730879A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |