US2728800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adsorption process for the separation of hydrocarbons
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1952-03-06
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Granted: 1955-12-27
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Expires: 1972-03-06
Abstract
No abstract record available.
Inventors
- 👤 Richard S Manne
- 👤 Bryson M Filbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:58
CPC Classifications
C; C10; C10G; C10G25/00; C07; C07C; C07C7/00; C07C7/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
226 words
A METHOD FOR ADSORBING AROMATIC HYDROCARBONS WHEREIN HEAT OF A ADSORPTION IS LIBERATED BY ADSORPTION OF SAID AROMATIC HYDROCARBONS WHICH COMPRISES FLOWING A FIRST FEED MIXTURE CONTAINING AROMATIC HYDROCARBONS IN AN AMOUNT IN THE RANGE BETWEEN 5% AND 20% BY VOLUME AND NON-AROMATIC HYDROCARBONS IN AN AMOUNT IN THE RANGE BETWEEN 95% AND 80% BOILING IN THE RANGE BETWEEN 100* AND 750* F. AT A TEMPERATURE IN THE RANGE BETWEEN 100* AND 120* F. THROUGH A BED OF SILICIA GEL TO ADSORB PREFERENTIALLY SAID AROMATIC HYDROCARBONS, INTERRUPTING THE FLOW OF SAID FIRST FEED MIXTURE, AND FLOWING THROUGH SAID BED A SECOND FEED MIXTURE CONTAINING AROMATIC HYDROCARBONS IN AN AMOUNT IN THE RANGE BETWEEN 30% AND 50% BY VOLUME AND NON-AROMATIC HYDROCARBONS IN AN AMOUNT IN THE RANGE BETWEEN 70% AND 50% BY VOLUME BOILING IN THE RANGE BETWEEN 100* AND 750* F. AND HAVING A BOILING POINT DIFFERENT FROM THE BOILING POINT OF AROMATIC AND NON-AROMATIC HYDROCARBONS IN THE FIRST FEED MIXTURE AT A TEMPERATURE IN THE RANGE FROM ABOUT 4* TO ABOUT 19* F. BELOW THE TEMPERATURE OF THE FIRST FEED MIXTURE SUCH THAT THE AROMATIC HYDROCARBONS IN THE SECOND FEED MIXTURE ARE DESORBED PREFERENTIALLY BY SAID SILICIA GEL AND THE AROMATIC HYDROCARBONS ADSORBED BY SAID BED FROM THE FIRST FEED MIXTURE ARE DESORBED AND THEREBY COMPRNSATING FOR HEAT OF ABSORPTION OF SAID AROMATIC HYDROCARBONS.
Claim 2
Independent Claim
226 words
A METHOD FOR ADSORBING AROMATIC HYDROCARBONS WHEREIN HEAT OF A ADSORPTION IS LIBERATED BY ADSORPTION OF SAID AROMATIC HYDROCARBONS WHICH COMPRISES FLOWING A FIRST FEED MIXTURE CONTAINING AROMATIC HYDROCARBONS IN AN AMOUNT IN THE RANGE BETWEEN 5% AND 20% BY VOLUME AND NON-AROMATIC HYDROCARBONS IN AN AMOUNT IN THE RANGE BETWEEN 95% AND 80% BOILING IN THE RANGE BETWEEN 100* AND 750* F. AT A TEMPERATURE IN THE RANGE BETWEEN 100* AND 120* F. THROUGH A BED OF SILICIA GEL TO ADSORB PREFERENTIALLY SAID AROMATIC HYDROCARBONS, INTERRUPTING THE FLOW OF SAID FIRST FEED MIXTURE, AND FLOWING THROUGH SAID BED A SECOND FEED MIXTURE CONTAINING AROMATIC HYDROCARBONS IN AN AMOUNT IN THE RANGE BETWEEN 30% AND 50% BY VOLUME AND NON-AROMATIC HYDROCARBONS IN AN AMOUNT IN THE RANGE BETWEEN 70% AND 50% BY VOLUME BOILING IN THE RANGE BETWEEN 100* AND 750* F. AND HAVING A BOILING POINT DIFFERENT FROM THE BOILING POINT OF AROMATIC AND NON-AROMATIC HYDROCARBONS IN THE FIRST FEED MIXTURE AT A TEMPERATURE IN THE RANGE FROM ABOUT 4* TO ABOUT 19* F. BELOW THE TEMPERATURE OF THE FIRST FEED MIXTURE SUCH THAT THE AROMATIC HYDROCARBONS IN THE SECOND FEED MIXTURE ARE DESORBED PREFERENTIALLY BY SAID SILICIA GEL AND THE AROMATIC HYDROCARBONS ADSORBED BY SAID BED FROM THE FIRST FEED MIXTURE ARE DESORBED AND THEREBY COMPRNSATING FOR HEAT OF ABSORPTION OF SAID AROMATIC HYDROCARBONS.
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) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |