US4151073A
Expired / Lapsed
US
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Process for phase separation
Assignee: IFP ENTERPRISES
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Filing: 1978-10-31
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Granted: 1979-04-24
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Expires: 1998-10-31
Abstract
Abstract This invention provides a continuous process for separating a gaseous phase from a hydrocarbon liquid containing carbonaceous particulates and gases. The liquid is fed to a cylindrical separator, with the gaseous phase being removed therefrom as an overhead product, whereas the hydrocarbon liquid and the particulates are withdrawn as a bottoms product. By feeding the liquid tangentially to the separator and maintaining a particulate-liquid slurry downward velocity of from about 0.01 to about 0.25 fps in the separator, a total solids weight percent in the slurry of from about 0.1 to about 30%, a slurry temperature of from about 550° to about 900° F., a slurry residence time in the separator of from about 30 to about 360 seconds, and a length/diameter ratio for the separator of from about 20/1 to about 50/1, so that the characterization factor, α, defined as ##STR1## DOES NOT EXCEED ABOUT 48 (°R sec 2 )/ft, the deposit of carbonaceous materials on the interior surface of the separator may be substantially eliminated.
Inventors
- 👤 Alfred G. Comolli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:34
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/06; B; B01; B01D; B01D19/00; B01D19/0042; B01D19/0052; B01D19/0057; C10G1/04; C10G1/045; C10G31/00; C10G31/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
168 words
In a continuous process of separating a gaseous phase from a hydrocarbon liquid containing particulates and gases comprising feeding the liquid to about the middle portion of a cylindrical separator, removing the gaseous phase from the separator as an overhead vapor product, and withdrawing from the separator as a bottoms product a slurry comprising the hydrocarbon liquid and the particulates, the improvement comprising: (1) feeding the liquid tangentially to the separator; and (2) maintaining (a) a particulate-liquid slurry downward velocity of from about 0.01 to about 0.25 ft/sec in the separator; (b) a solids W % in the slurry of from about 0.1 to about 30%; (c) a slurry temperature of from about 550° to about 900° F.; (d) a slurry residence time in the separator of from about 30 to about 360 seconds; and (e) a length/diameter ratio for the separator of from about 20/1 to about 50/1, so that the characterization fractor, α, defined as ##STR5## does not exceed about 48 ° R sec 2 /ft.
Claim 2
Dependent Claim
168 words
In a continuous process of separating a gaseous phase from a hydrocarbon liquid containing particulates and gases comprising feeding the liquid to about the middle portion of a cylindrical separator, removing the gaseous phase from the separator as an overhead vapor product, and withdrawing from the separator as a bottoms product a slurry comprising the hydrocarbon liquid and the particulates, the improvement comprising: (1) feeding the liquid tangentially to the separator; and (2) maintaining (a) a particulate-liquid slurry downward velocity of from about 0.01 to about 0.25 ft/sec in the separator; (b) a solids W % in the slurry of from about 0.1 to about 30%; (c) a slurry temperature of from about 550° to about 900° F.; (d) a slurry residence time in the separator of from about 30 to about 360 seconds; and (e) a length/diameter ratio for the separator of from about 20/1 to about 50/1, so that the characterization fractor, α, defined as ##STR5## does not exceed about 48 ° R sec 2 /ft.
Claim 3
Dependent Claim
39 words
The process of claim 1 wherein the hydrocarbon liquid is a coal-derived liquid, the wt % of solids is from about 1.5% to about 30%, and α is from about 2 to about 48 ° R sec 2 /ft.
Claim 4
Dependent Claim
25 words
The process of claim 1 wherein the hydrocarbon liquid is hydrogenated oil and the wt % of solids is from about 0.1% to about 15%.
Claim 5
Dependent Claim
77 words
The process of claim 2 wherein the slurry residence time is from about 60 to about 300 sec, the slurry downward velocity is from about 0.04 to about 0.20 ft/sec., the slurry temperature is from about 650° to about 850° F., the total wt % of solids is from about 1.5 to about 25%, the length/diameter ratio is from about 25/1 to 45/1, and α is from about 2 to about 48 ° R sec 2 /ft.
Claim 6
Dependent Claim
68 words
The process of claim 3 wherein the slurry residence time is from about 40 to about 300 seconds, the slurry downward velocity is from about 0.01 to about 0.20 ft/sec, the liquid temperature is from about 650° to about 850° F., the total wt % of solids is from about 0.2% to about 10%, and α is from about 2.0 to about 25.0 ° R sec 2 /ft.
Claim 7
Dependent Claim
15 words
The process of claim 2 wherein 40-80 wt % of the solids are carbonaceous type.
Claim 8
Dependent Claim
14 words
The process of claim 3 wherein 10-60 wt% of the solids are carbonaceous type.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-23 | 1982-10-23 | 1983-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-23 | 1986-10-23 | 1987-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-23 | 1990-10-23 | 1991-04-24 | $7700.00 | Window Closed / Lapsed |