US4059675A
Expired / Lapsed
US
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Decomposition of halogenated organic compounds
Assignee: Vista Chemical Co
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Filing: 1976-06-14
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Granted: 1977-11-22
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Expires: 1996-06-14
Abstract
Abstract A method for decomposing halogenated organic compounds which comprises: (a) preheating the halogenated organic compound to a temperature above about 300° C. and (b) contacting the preheated organic compound with a catalytic amount of ruthenium in the presence of an oxidizing agent at a temperature of at least about 350° C.
Inventors
- 👤 Kang Yang
- 👤 James D. Reedy
- 👤 John F. Scamehorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:10
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/74; B01D53/86; B01D53/8659; B01D53/8662; C; C01; C01B; C01B7/00; C01B7/01; Y; Y10; Y10S; Y10S588/00; Y10S588/901
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
74 words
A method for decomposing chlorinated organic compounds, said chlorinated organic compounds containing 1 to 4 carbon atoms and containing at least as many hydrogen atoms as chlorine atoms, said method comprising: a. heating the chlorinated organic compounds to a temperature above about 300° C., and b. then contacting the heated organic compound with a catalytic amount of ruthenium in the presence of an oxidizing agent at a temperature of at least about 350° C.
Claim 2
Independent Claim
74 words
A method for decomposing chlorinated organic compounds, said chlorinated organic compounds containing 1 to 4 carbon atoms and containing at least as many hydrogen atoms as chlorine atoms, said method comprising: a. heating the chlorinated organic compounds to a temperature above about 300° C., and b. then contacting the heated organic compound with a catalytic amount of ruthenium in the presence of an oxidizing agent at a temperature of at least about 350° C.
Claim 3
Dependent Claim
18 words
The process of claim 1 wherein the oxidizing agent is air or a mixture of nitrogen and oxygen.
Claim 4
Dependent Claim
55 words
The process of claim 2 wherein the chlorinated organic compounds are selected from the group consisting of vinyl chloride and mixtures of C 1 chlorinated compounds and C 2 chlorinated compounds containing vinyl chloride wherein the total number of hydrogen atoms in the mixture is at least equal to the total number of chlorine atoms.
Claim 5
Dependent Claim
13 words
The process of claim 3 wherein the chlorinated organic compound is vinyl chloride.
Claim 6
Dependent Claim
22 words
The process of claim 4 wherein the ruthenium is supported on a non-oxidizing carrier and contains 0.01 to 1.0 weight percent ruthenium.
Claim 7
Dependent Claim
12 words
The process of claim 5 wherein the non-oxidizing carrier is aluminum oxide.
Claim 8
Dependent Claim
33 words
The process of claim 6 wherein the temperature in step (a) is above 320° C. and the temperature in step (b) is in the range of about 350° C. to about 600° C.
Claim 9
Dependent Claim
33 words
The process of claim 7 wherein the temperature of step (a) is above 340° C. and the temperature of step (b) is in the range of about 400° C. to about 500° C.
Claim 10
Independent Claim
112 words
A method for substantially reducing the amount of chlorinated organic compounds in a gaseous stream containing chlorinated organic compounds by decomposing said chlorinated organic compounds, said chlorinated organic compounds containing 1 to 4 carbon atoms and containing at least as many hydrogen atoms as chlorine atoms, said method comprising: a. heating a gaseous stream comprising said chlorinated organic compounds and an oxidizing gas selected from air and a mixture of nitrogen and oxygen to a temperature above about 300° C., and b. then passing the heated gaseous stream of step (a) through a heated zone having a temperature of at least about 350° C. wherein it contacts a catalytic amount of ruthenium.
Claim 11
Independent Claim
112 words
A method for substantially reducing the amount of chlorinated organic compounds in a gaseous stream containing chlorinated organic compounds by decomposing said chlorinated organic compounds, said chlorinated organic compounds containing 1 to 4 carbon atoms and containing at least as many hydrogen atoms as chlorine atoms, said method comprising: a. heating a gaseous stream comprising said chlorinated organic compounds and an oxidizing gas selected from air and a mixture of nitrogen and oxygen to a temperature above about 300° C., and b. then passing the heated gaseous stream of step (a) through a heated zone having a temperature of at least about 350° C. wherein it contacts a catalytic amount of ruthenium.
Claim 12
Dependent Claim
55 words
The process of claim 9 wherein the chlorinated organic compounds are selected from the group consisting of vinyl chloride and mixtures of C 1 chlorinated compounds and C 2 chlorinated compounds containing vinyl chloride wherein the total number of hydrogen atoms in the mixture is at least equal to the total number of chlorine atoms.
Claim 13
Dependent Claim
13 words
The process of claim 10 wherein the chlorinated organic compound is vinyl chloride.
Claim 14
Dependent Claim
22 words
The process of claim 11 wherein the ruthenium is supported on a non-oxidizing carrier and contains 0.01 to 1.0 weight percent ruthenium.
Claim 15
Dependent Claim
12 words
The process of claim 12 wherein the non-oxidizing carrier is aluminum oxide.
Claim 16
Dependent Claim
33 words
The process of claim 13 wherein the temperature in step (a) is above 320° C. and the temperature in step (b) is in the range of about 350° C. to about 600° C.
Claim 17
Dependent Claim
33 words
The process of claim 14 wherein the temperature in step (a) is above 340° C. and the temperature in step (b) is in the range of about 400° C. to about 500° C.
Claim 18
Dependent Claim
14 words
The process of claim 5 wherein the ruthenium is impregnated on the support carrier.
Claim 19
Dependent Claim
14 words
The process of claim 5 wherein the ruthenium is coated on the support carrier.
References Cited (Backward Citations)
US3437445A
Cited
US3972979A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-11-21 | 1981-05-23 | 1981-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-21 | 1985-05-23 | 1985-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-21 | 1989-05-23 | 1989-11-22 | $7700.00 | Window Closed / Lapsed |