Patent US1775713A successfully refreshed from Google Patents.
US4130484A
Expired / Lapsed
US
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Purification process
Assignee: Phillips Petroleum Co
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Filing: 1976-06-28
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Granted: 1978-12-19
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Expires: 1996-06-28
Abstract
Abstract A process for removing at least a substantial portion of at least one contaminant from a fluid containing said at least one contaminant and at least one dehydration sensitive compound without causing substantial dehydration of said dehydration sensitive compound, said at least one contaminant being selected from the group consisting of water and nitrogen compounds having the formula XNH 2 wherein X is selected from the group consisting of hydrogen and linear alkyl radicals having 1 to 22 carbon atoms; which comprises contacting said fluid with a suitable base treated molecular sieve having an effective pore diameter in the range of about 2 to about 6 Angstrom units.
Inventors
- 👤 Stanley J. Marwil
- 👤 Ernest A. Zuech
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:58
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/44; C07C209/48; B; B01; B01D; B01D15/00; B01D53/00; B01D53/02; C07C29/00; C07C29/74; C07C29/76
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
161 words
In a process for removing at least a substantial portion of at least one contaminant from a fluid containing said at least one contaminant and at least one dehydration sensitive compound, said at least one contaminant being selected from the group consisting of water and nitrogen compounds having the formula XNH 2 wherein X is selected from the group consisting of hydrogen and linear alkyl radicals having 1 to 22 carbon atoms wherein said fluid is contacted with a molecular sieve having an effective pore diameter in the range of about 2 to about 6 Angstrom units, thereby causing substantial dehydration of said dehydration sensitive compound; the improvement comprising treating said molecular sieve with at least one base selected from the group consisting of alkali metal hydroxides, alkali metal carbonates, alkaline earth hydroxides and alkaline earth carbonates and utilizing the thus treated molecular sieve to contact said fluid to thereby at least substantially reduce the dehydration of said dehydration sensitive compound.
Claim 2
Dependent Claim
161 words
In a process for removing at least a substantial portion of at least one contaminant from a fluid containing said at least one contaminant and at least one dehydration sensitive compound, said at least one contaminant being selected from the group consisting of water and nitrogen compounds having the formula XNH 2 wherein X is selected from the group consisting of hydrogen and linear alkyl radicals having 1 to 22 carbon atoms wherein said fluid is contacted with a molecular sieve having an effective pore diameter in the range of about 2 to about 6 Angstrom units, thereby causing substantial dehydration of said dehydration sensitive compound; the improvement comprising treating said molecular sieve with at least one base selected from the group consisting of alkali metal hydroxides, alkali metal carbonates, alkaline earth hydroxides and alkaline earth carbonates and utilizing the thus treated molecular sieve to contact said fluid to thereby at least substantially reduce the dehydration of said dehydration sensitive compound.
Claim 3
Dependent Claim
27 words
A process in accordance with claim 1 wherein said at least one dehydration sensitive compound is selected from the group consisting of secondary alcohols and tertiary alcohols.
Claim 4
Dependent Claim
12 words
A process in accordance with claim 2 wherein said X is hydrogen.
Claim 5
Dependent Claim
15 words
A process in accordance with claim 2 wherein said at least one contaminant comprises ammonia.
Claim 6
Dependent Claim
21 words
A process in accordance with claim 4 wherein said at least one dehydration sensitive compound comprises at least one tertiary alkanol.
Claim 7
Dependent Claim
17 words
A process in accordance with claim 4 wherein said at least one dehydration sensitive compound comprises t-butanol.
Claim 8
Dependent Claim
13 words
A process in accordance with claim 6 wherein said base is a carbonate.
Claim 9
Dependent Claim
13 words
A process in accordance with claim 6 wherein said base comprises sodium carbonate.
Claim 10
Dependent Claim
23 words
A process in accordance with claim 2 wherein said at least one contaminant comprises water and at least one of said nitrogen compounds.
Claim 11
Dependent Claim
20 words
A process in accordance with claim 1 wherein said fluid contains water and at least one of said nitrogen compounds.
Claim 12
Dependent Claim
17 words
A process in accordance with claim 1 wherein said at least one contaminant comprises water and ammonia.
Claim 13
Dependent Claim
21 words
A process in accordance with claim 1 wherein said at least one contaminant comprises at least one of said nitrogen compounds.
Claim 14
Dependent Claim
15 words
A process in accordance with claim 1 wherein said at least one contaminant comprises ammonia.
Claim 15
Dependent Claim
12 words
A process in accordance with claim 1 wherein said contaminant comprises water.
Claim 16
Dependent Claim
16 words
A process in accordance with claim 1 wherein said molecular sieve is a 5A mole sieve.
Claim 17
Dependent Claim
16 words
A process in accordance with claim 15 wherein said at least one base comprises sodium carbonate.
Claim 18
Dependent Claim
21 words
A process in accordance with claim 16 wherein said at least one dehydratiion sensitive compound comprises at least one tertiary alkanol.
Claim 19
Dependent Claim
14 words
A process in accordance with claim 16 wherein said fluid comprises t-butanol and ammonia.
References Cited (Backward Citations)
US2137605A
Cited
US2882243A
Cited
US3472912A
Cited
US3483137A
Cited
US3852252A
Cited
US3723308A
Cited
US3808773A
Cited
US3733391A
Cited
US3840583A
Cited
US3896173A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-18 | 1982-06-19 | 1982-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-18 | 1986-06-19 | 1986-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-18 | 1990-06-19 | 1990-12-19 | $7700.00 | Window Closed / Lapsed |