US4539099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the removal of solids from an oil
Assignee: Nalco Energy Services LP
•
Filing: 1984-09-20
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Granted: 1985-09-03
•
Expires: 2004-09-20
Abstract
Abstract A process for removing suspended solids particularly difficultly filterable inorganic solids from an oil obtained as a refinery process bottom fraction from both steam and catalytic cracking units (e.g. catalytic cracker bottoms) or from coal conversion processes (e.g. coal tar) by adding to the oil an agglomerating agent comprising an oxyalkylated phenol formaldehyde resin glycol ester whereby said solids are clustered together into readily filterable agglomerates.
Inventors
- 👤 Philip Merchant
- 👤 R. Roger Wunderlich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:04
CPC Classifications
C; C10; C10G; C10G31/00; C10G31/09
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
96 words
A process for reducing the particulate solids content of a hydrocarbon oil fraction comprising: providing a hydrocarbon oil fraction boiling in the range of from about 200° C. to about 550° C.; treating said hydrocarbon oil fraction with an agglomeration aid wherein the resulting mixture contains from 10 to 1000 weight parts per million of said aid based on the total weight of said mixture, said agglomeration aid comprising oxyalkylated phenol formaldehyde resin glycol ester of Mw ranging from 500 to 50,000; and, recovering a hydrocarbon oil bottoms portion having a reduced content of filterable solids.
Claim 2
Dependent Claim
96 words
A process for reducing the particulate solids content of a hydrocarbon oil fraction comprising: providing a hydrocarbon oil fraction boiling in the range of from about 200° C. to about 550° C.; treating said hydrocarbon oil fraction with an agglomeration aid wherein the resulting mixture contains from 10 to 1000 weight parts per million of said aid based on the total weight of said mixture, said agglomeration aid comprising oxyalkylated phenol formaldehyde resin glycol ester of Mw ranging from 500 to 50,000; and, recovering a hydrocarbon oil bottoms portion having a reduced content of filterable solids.
Claim 3
Dependent Claim
30 words
The process of claim 1 wherein said bottom fraction had at least 1000 weight parts per million (WPPM) of filterable solids and said recovered portion had less than 500 WPPM.
Claim 4
Dependent Claim
29 words
The process of claim 1 wherein said aid is an ethoxylated-propoxylated C 4 -C 9 alkyl phenol formaldehyde resin glycol ester of a Mw ranging from 2,000 to 15,000.
Claim 5
Dependent Claim
29 words
The process of claim 1 wherein said treating is at a temperature of from 35° C. to 250° C. and for residence times ranging from 0.3 to 10 days.
Claim 6
Dependent Claim
13 words
The process of claim 1 wherein said fraction is a refinery bottoms fraction.
Claim 7
Dependent Claim
24 words
The process of claim 1 wherein said fraction is coal tar having a Kinematic viscosity at 50° C. of no more than 330 centistokes.
Claim 8
Dependent Claim
22 words
The process of claim 2 wherein said aid is a succinate and present in said mixture in from 10 to 250 ppm.
Claim 9
Dependent Claim
21 words
The process of claim 5 wherein said solids are predominantly catalytic cracker fines having a diameter of less than 100 microns.
Claim 10
Dependent Claim
13 words
The process of claim 6 wherein said solids are substantially all inorganic solids.
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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) | 1988-09-02 | 1989-03-04 | 1989-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-02 | 1993-03-04 | 1993-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-02 | 1997-03-04 | 1997-09-03 | $7700.00 | Window Closed / Lapsed |