US3852182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coal liquefaction
Assignee: Lummus Technology LLC
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Filing: 1972-11-07
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Granted: 1974-12-03
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Expires: 1992-11-07
Abstract
Abstract Insoluble material is separated from a coal liquefaction product by use of a promoter liquid prepared from a fraction of the coal liquefaction product. The promoter liquid is prepared from a fraction having a 5 volume percent distillation temperature of at least 250*F. preferably at least 400*F. and a 95 volume percent distillation temperature of at least 350*F. and no greater than 750*F. by hydrogenating the fraction to raise the characterization factor thereof to at least 9.75.
Inventors
- 👤 M Sze
- 👤 G Snell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:18
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/08; C10G1/083; C10G1/04; C10G1/045; C10G45/00; C10G45/44
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
222 words
A PROCESS FOR SEPARATING INSOLUBLE MATERIAL FROM A COAL LIQUEFACTION PRODUCT PRODUCED FROM A COAL FEED AND COMPRISED OF INSOLUBLE MATERIAL AND A COAL SOLUTION OF CARBONACEOUS MATTER DISSOLVED IN A COAL LIQUEFACTION SOLVENT, COMPRISING: A. INTRODUCING SAID COAL LIQUEFACTION PRODUCT AND A LIQUID PROMOTER INTO A GRAVITY SETTLING ZONE, SAID LIQUID PROMOTER HAVING A 5 VOLUME PERCENT DISTILLATION TEMPERATURE OF AT LEAST ABOUT 250*F., AND A 95 VOLUME PERCENT DISTILLATION TEMPERATURE OF AT LEAST ABOUT 350*F. AND NO GREATER THAN ABOUT 750*F., SAID LIQUID PROMOTER HAVING A CHARACTERIZATION FACTOR (K) OF AT LEAST 9.75, SAID LIQUID PROMOTER HAVING A CHARACTERIZATION FACTOR GREATER THAN SAID COAL LIQUEFACTION SOLVENT AND BEING ADDED IN AN AMOUNT SUFFICIENT TO PRODUCE A COAL EXTRACT ESSENTIALLY FREE OF INSOLUBLE MATERIAL; B. RECOVERING BY GRAVITY SETTLING AS OVERFLOW A COAL EXTRACT ESSENTIALLY FREE OF INSOLUBLE MATERIAL; C. SEPARATING FROM SAID COAL EXTRACT A FRACTION HAVING A 5 VOLUME DISTILLATION TEMPERATURE OF AT LEAST ABOUT 250*F. AND A 95 VOLUME DISTILLATION TEMPERATURE OF AT LEAST ABOUT 350*F. AND NO GREATER THAN ABOUT 750*F.; D. HYDROGENATING AT LEAST A PORTION OF SAID FRACTION TO PRODUCE A LIQUID PROMOTER HAVING A CHARACTERIZATION FACTOR GREATER THAN THE CHARACTERIZATION FACTOR OF SAID COAL LIQUEFRACTION SOLVENT, SAID CHARACTERIZATION FACTOR BEING AT LEAST 9.75; AND E. EMPLOYING LIQUID PROMOTER FROM STEP (D) IN STEP (A).
Claim 2
Dependent Claim
222 words
A PROCESS FOR SEPARATING INSOLUBLE MATERIAL FROM A COAL LIQUEFACTION PRODUCT PRODUCED FROM A COAL FEED AND COMPRISED OF INSOLUBLE MATERIAL AND A COAL SOLUTION OF CARBONACEOUS MATTER DISSOLVED IN A COAL LIQUEFACTION SOLVENT, COMPRISING: A. INTRODUCING SAID COAL LIQUEFACTION PRODUCT AND A LIQUID PROMOTER INTO A GRAVITY SETTLING ZONE, SAID LIQUID PROMOTER HAVING A 5 VOLUME PERCENT DISTILLATION TEMPERATURE OF AT LEAST ABOUT 250*F., AND A 95 VOLUME PERCENT DISTILLATION TEMPERATURE OF AT LEAST ABOUT 350*F. AND NO GREATER THAN ABOUT 750*F., SAID LIQUID PROMOTER HAVING A CHARACTERIZATION FACTOR (K) OF AT LEAST 9.75, SAID LIQUID PROMOTER HAVING A CHARACTERIZATION FACTOR GREATER THAN SAID COAL LIQUEFACTION SOLVENT AND BEING ADDED IN AN AMOUNT SUFFICIENT TO PRODUCE A COAL EXTRACT ESSENTIALLY FREE OF INSOLUBLE MATERIAL; B. RECOVERING BY GRAVITY SETTLING AS OVERFLOW A COAL EXTRACT ESSENTIALLY FREE OF INSOLUBLE MATERIAL; C. SEPARATING FROM SAID COAL EXTRACT A FRACTION HAVING A 5 VOLUME DISTILLATION TEMPERATURE OF AT LEAST ABOUT 250*F. AND A 95 VOLUME DISTILLATION TEMPERATURE OF AT LEAST ABOUT 350*F. AND NO GREATER THAN ABOUT 750*F.; D. HYDROGENATING AT LEAST A PORTION OF SAID FRACTION TO PRODUCE A LIQUID PROMOTER HAVING A CHARACTERIZATION FACTOR GREATER THAN THE CHARACTERIZATION FACTOR OF SAID COAL LIQUEFRACTION SOLVENT, SAID CHARACTERIZATION FACTOR BEING AT LEAST 9.75; AND E. EMPLOYING LIQUID PROMOTER FROM STEP (D) IN STEP (A).
Claim 3
Dependent Claim
22 words
The process of claim 1 wherein the weight ratio of liquid promoter to coal solution is from about 0.2:1 to about 4.0:1.
Claim 4
Dependent Claim
21 words
The process of claim 2 wherein said promoter liquid has a 5 volume percent distillation temperature of at least about 400*F.
Claim 5
Dependent Claim
20 words
The process of claim 1 wherein the characterization factor K of the promoter liquid is no greater than about 11.0.
Claim 6
Dependent Claim
22 words
The process of claim 4 wherein the weight ratio of liquid promoter to coal solution is from about 1:1 to about 4:1.
Claim 7
Dependent Claim
21 words
The process of claim 5 wherein said promoter liquid has a 5 volume percent distillation temperature of at least about 400*F.
Claim 8
Dependent Claim
70 words
The process of claim 1 wherein the ratio of liquid promoter to coal solution is from about 0.2:1 to about 4.0:1 and in an amount to provide a coal product from said coal feed containing less than about 0.05 percent, by weight, of insoluble material and a coal residue contain no greater than about 40 percent, by weight, of the moisture ash free coal as an ash free +850*F. fraction.
Claim 9
Dependent Claim
31 words
The process of claim 1 wherein the gravity settling is effected at a temperature from about 300*F. to about 600*F and a pressure from about 0 psig to about 500 psig.
Claim 10
Dependent Claim
36 words
The process of claim 1 wherein said fraction and promoter liquid have a 5 volume percent distillation temperature of no less than about 425*F. and a 95 volume distillation temperature of no greater than about 500*F.
Claim 11
Dependent Claim
24 words
The process of claim 1 wherein the 95 volume percent distillation temperature of said fraction and promoter liquid is no greater than about 600*F.
Claim 12
Dependent Claim
31 words
The process of claim 7 wherein the gravity settling is effected at a temperature from about 300*F. to about 600*F. and a pressure from about 0 psig to about 500 psig.
Claim 13
Dependent Claim
19 words
The process of claim 11 wherein the characterization factor of said liquid promoter is no greater than about 11.0.
Claim 14
Dependent Claim
22 words
The process of claim 12 wherein the weight ratio of liquid promoter to coal solution is from about 1:1 to about 4:1.
Claim 15
Dependent Claim
37 words
The process of claim 13 wherein said fraction and promoter liquid have a 5 volume percent distillation temperature of no less than about 425*F and a 95 volume percent distillation temperature of no greater than about 500*F.
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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) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |