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US2883441A
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Purification of benzole using hydrogen
Assignee: Imperial Chemical Industries Ltd
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Filing: 1954-08-30
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Granted: 1959-04-21
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Expires: 1974-08-30
Abstract
No abstract record available.
Inventors
- 👤 Sawyer Edward William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:06
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C7/163; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/943
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A PROCESS FOR THE RECOVERY OF BENZENE FROM BENZOLE IN A FORM SUBSTANTIALLY FREE FROM NON-AROMATIC HYDROCARBONS AND WHEREIN THE FORMATION O F CONDENSED AROMATIC HYDROCARBONS IS SUPPRESSED, WHICH COMPRISES INTRODUCING A BENZOLE RICH IN BENZENE AND CONTAINING NONAROMATIC HYDROCARBONS AND GAS CONTAINS FREE HYDROGEN IN AMOUNTS SUCH THAT THE MOLAR RATIO OF HYDROGEN TO BENZOLE IS WITHIN THE RANGE OF ABOUT 1.5:1 TO ABOUT 3:1 SAID GAS CONTAINING AT LEAST 30% HYDROGEN, INTO A MOVING BODY OF INERT MATERIAL MAINTAINED AT A TEMPERATURE WITHIN THE RANGE OF 650* TO 900*C. AND UNDER A PRESSURE WHICH IS BETWEEN ATMOSPHERIC AND ABOUT 10 ATMOSPHERE AND THEN COOLING AND SEPARATING BENZENE.
Claim 2
Dependent Claim
109 words
A PROCESS FOR THE RECOVERY OF BENZENE FROM BENZOLE IN A FORM SUBSTANTIALLY FREE FROM NON-AROMATIC HYDROCARBONS AND WHEREIN THE FORMATION O F CONDENSED AROMATIC HYDROCARBONS IS SUPPRESSED, WHICH COMPRISES INTRODUCING A BENZOLE RICH IN BENZENE AND CONTAINING NONAROMATIC HYDROCARBONS AND GAS CONTAINS FREE HYDROGEN IN AMOUNTS SUCH THAT THE MOLAR RATIO OF HYDROGEN TO BENZOLE IS WITHIN THE RANGE OF ABOUT 1.5:1 TO ABOUT 3:1 SAID GAS CONTAINING AT LEAST 30% HYDROGEN, INTO A MOVING BODY OF INERT MATERIAL MAINTAINED AT A TEMPERATURE WITHIN THE RANGE OF 650* TO 900*C. AND UNDER A PRESSURE WHICH IS BETWEEN ATMOSPHERIC AND ABOUT 10 ATMOSPHERE AND THEN COOLING AND SEPARATING BENZENE.
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) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |