US4256568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of phenols from phenol-containing streams
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1979-11-19
•
Granted: 1981-03-17
•
Expires: 1999-11-19
Abstract
Abstract Process for removing phenols from phenol-containing streams such as coal liquids by contacting the stream with a multivalent metal composition selected from the group consisting of oxides and/or hydroxides of one or more multivalent metals capable of forming a hydroxy metal phenate with the phenols of the stream; separating the hydroxy metal phenate from the treated stream; and heating the hydroxy metal phenate to its decomposition temperature, thereby forming phenols and oxides of the multivalent metal.
Inventors
- 👤 Richard H. Schlosberg
- 👤 Charles G. Scouten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:04
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/005; C10; C10G; C10G19/00; C10G19/073; C10G29/00; C10G29/16
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
102 words
A process for removing phenols from a phenol-containing coal liquid and regenerating the phenols, the process comprising: (a) containing the coal liquid with a multivalent metal composition selected from the group consisting of oxides and/or hydroxides of one or more multivalent metals capable of forming a hydroxy metal phenate with the phenols of the stream, wherein said contacting is performed at temperatures lower than the decomposition temperature of the hydroxy metal phenate; (b) separating the hydroxy metal phenate from the treated stream; and (c) heating the hydroxy metal phenate to its decomposition temperature, thereby forming phenols and oxides of the multivalent metal.
Claim 2
Dependent Claim
102 words
A process for removing phenols from a phenol-containing coal liquid and regenerating the phenols, the process comprising: (a) containing the coal liquid with a multivalent metal composition selected from the group consisting of oxides and/or hydroxides of one or more multivalent metals capable of forming a hydroxy metal phenate with the phenols of the stream, wherein said contacting is performed at temperatures lower than the decomposition temperature of the hydroxy metal phenate; (b) separating the hydroxy metal phenate from the treated stream; and (c) heating the hydroxy metal phenate to its decomposition temperature, thereby forming phenols and oxides of the multivalent metal.
Claim 3
Dependent Claim
34 words
The process of claim 1 wherein the mol ratio of multivalent metal to phenolic oxygen in the stream is such that at least 15 wt. % of the phenols are removed from the stream.
Claim 4
Dependent Claim
23 words
The process of claim 1 wherein the multivalent metal is selected from the group consisting of Ca, Ba, Sr and Ni +++ .
Claim 5
Dependent Claim
23 words
The process of claim 2 wherein the multivalent metal is selected from the group consisting of Ca, Ba, Sr and Ni +++ .
Claim 6
Dependent Claim
13 words
The process of claim 4 wherein the multivalent metal composition is a hydroxide.
Claim 7
Dependent Claim
13 words
The process of claim 5 wherein the multivalent metal composition is calcium hydroxide.
Claim 8
Dependent Claim
22 words
The process of claim 1 wherein the process is continuous and the resulting multivalent metal oxides are recycled to the coal liquid.
Claim 9
Dependent Claim
24 words
The process of claim 7 wherein the multivalent metal oxides are first hydrolyzed to the corresponding hydroxides before being recycled to the coal liquid.
Claim 10
Dependent Claim
21 words
The process of claim 1 wherein the stream contains a stoichiometric amount of water to hydrolyze any multivalent oxides to hydroxides.
Claim 11
Dependent Claim
101 words
A process for removing phenols from a phenol-containing hydrocarbonaceous stream and regenerating the phenols, the process comprising: (a) contacting the stream with a multivalent metal composition selected from the group consisting of oxides and/or hydroxides of one or more multivalent metals capable of forming a hydroxy metal phenate with the phenols of the stream, wherein said contacting is performed at temperatures lower than the decomposition temperature of the hydroxy metal phenate; (b) separating the hydroxy metal phenate from the treated stream; and (c) heating the hydroxy metal phenate to its decomposition temperature, thereby forming phenols and oxides of the multivalent metal.
Claim 12
Dependent Claim
101 words
A process for removing phenols from a phenol-containing hydrocarbonaceous stream and regenerating the phenols, the process comprising: (a) contacting the stream with a multivalent metal composition selected from the group consisting of oxides and/or hydroxides of one or more multivalent metals capable of forming a hydroxy metal phenate with the phenols of the stream, wherein said contacting is performed at temperatures lower than the decomposition temperature of the hydroxy metal phenate; (b) separating the hydroxy metal phenate from the treated stream; and (c) heating the hydroxy metal phenate to its decomposition temperature, thereby forming phenols and oxides of the multivalent metal.
Claim 13
Dependent Claim
34 words
The process of claim 10 wherein the mol ratio of multivalent metal to phenolic oxygen in the stream is such that at least 15 wt. % of the phenols are removed from the stream.
Claim 14
Dependent Claim
23 words
The process of claim 10 wherein the multivalent metal is selected from the group consisting of Ca, Ba, Sr and Ni +++ .
Claim 15
Dependent Claim
23 words
The process of claim 11 wherein the multivalent metal is selected from the group consisting of Ca, Ba, Sr and Ni +++ .
Claim 16
Dependent Claim
13 words
The process of claim 13 wherein the multivalent metal composition is a hydroxide.
Claim 17
Dependent Claim
13 words
The process of claim 14 wherein the multivalent metal composition is calcium hydroxide.
Claim 18
Dependent Claim
22 words
The process of claim 10 wherein the process is continuous and the resulting multivalent metal oxides are recycled to the hydrocarbonaceous stream.
Claim 19
Dependent Claim
24 words
The process of claim 16 wherein the multivalent metal oxides are first hydrolyzed to the corresponding hydroxides before being recycled to the hydrocarbonaceous stream.
Claim 20
Dependent Claim
21 words
The process of claim 10 wherein the stream contains a stoichiometric amount of water to hydrolyze any multivalent oxides to hydroxides.
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) | 1984-03-16 | 1984-09-15 | 1985-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-16 | 1988-09-15 | 1989-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-16 | 1992-09-15 | 1993-03-17 | $7700.00 | Window Closed / Lapsed |