Patent US3909208A successfully refreshed from Google Patents.
US3909208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for hydrocarbon conversion
Assignee: IFP Energies nouvelles
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Filing: 1972-12-13
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Granted: 1975-09-30
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Expires: 1992-12-13
Abstract
Abstract A catalytic reaction chamber of the radial flow type comprising an external distribution chamber, an annular zone for the catalyst bed, limited by two perforated walls and a central manifold including a screen of inverted truncated cone shape extending downwardly from the top of the catalytic zone. Optionally, the higher portion of the external perforated wall may have the shape of a truncated cone.
Inventors
- 👤 Roger Boret
- 👤 Charles Bronner
- 👤 Roland Huin
- 👤 Andre Vidal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:43
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; B; B01; B01J; B01J8/00; B01J8/02; B01J8/0207; B01J8/0214; B01J8/0278; B01J8/08; B01J8/12; C10G49/00; C10G49/002
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
199 words
AN APPARATUS FOR CONVERTING HYDROCARBONS IN THE PRESENCE OF A CATALYST, WHICH COMPRISES A SUBSTANTIALLY VERTICAL ELONGATED ENCLOSURE WHOSE SECTION BY A HORIZONTAL PLACE IS CURVILINEAR, SAID ELONGATED ENCLOSURE CONTAINING AN ANNULAR ENCLOSURE FOR RECEIVING A BED OF CATALYST, ARRANGED SUBSTANTIALLY VERTICALLY IN THE ELONGATED ENCLOSURE, SAID ANNULAR ENCLOSURE BEING DEFINED BETWEEN TWO CYLINDRICAL PERFORATED WALLS, THE CYLINDRICAL PERFORATED WALL WHICH IS CLOSER TO THE WALLS OF THE ELONGATED ENCLOSURE BEING REFERRED TO AS "EXTERNAL WALL OF THE ANNULAR ENCLOSURE" AND THE OTHER BEING REFERRED TO AS "INTERNAL WALL OF THE ANNULAR ENCLOSURE", SAID PERFORATED WALLS BEING FOR RADICAL FLOW OF A REACTANTS THROUGH SAID ANNULAR ENCLOSURE, SAID APPARATUS COMPRISING: AN INTERNAL MANIFOLD ADJACENT TO SAID ANNULAR ENCLOSURE AND COMPRISING THE INTERNAL SPACE OF THE ELONGATED ENCLOSURE LIMITED BY THE INTERNAL CYLINDRICAL WALL OF SAID AN EXTERNAL FEED SPACE ADJACENT TO SAID ANNULAR ENCLOSURE AND FORMED OF THE SPACE LIMITED BY THE WALLS OF THE ELONGATED ENCLOSURE AND THE EXTERNAL CYLINDRICAL WALL OF SAID ANNULAR ENCLOSURE, AN INLET COMMUNICATING WITH THE INTERNAL MANIFOLD ADJACENT TO SAID ANNULAR ENCLOSURE FOR FEEDING THE REACTANTS, AN OUTLET COMMUNICATING WITH THE INTERNAL MANIFOLD ADJACENT TO SAID ANNULAR ENCLOSURE FOR DISCHARGING THE REACTION PRODUCTS,
Claim 2
Independent Claim
199 words
AN APPARATUS FOR CONVERTING HYDROCARBONS IN THE PRESENCE OF A CATALYST, WHICH COMPRISES A SUBSTANTIALLY VERTICAL ELONGATED ENCLOSURE WHOSE SECTION BY A HORIZONTAL PLACE IS CURVILINEAR, SAID ELONGATED ENCLOSURE CONTAINING AN ANNULAR ENCLOSURE FOR RECEIVING A BED OF CATALYST, ARRANGED SUBSTANTIALLY VERTICALLY IN THE ELONGATED ENCLOSURE, SAID ANNULAR ENCLOSURE BEING DEFINED BETWEEN TWO CYLINDRICAL PERFORATED WALLS, THE CYLINDRICAL PERFORATED WALL WHICH IS CLOSER TO THE WALLS OF THE ELONGATED ENCLOSURE BEING REFERRED TO AS "EXTERNAL WALL OF THE ANNULAR ENCLOSURE" AND THE OTHER BEING REFERRED TO AS "INTERNAL WALL OF THE ANNULAR ENCLOSURE", SAID PERFORATED WALLS BEING FOR RADICAL FLOW OF A REACTANTS THROUGH SAID ANNULAR ENCLOSURE, SAID APPARATUS COMPRISING: AN INTERNAL MANIFOLD ADJACENT TO SAID ANNULAR ENCLOSURE AND COMPRISING THE INTERNAL SPACE OF THE ELONGATED ENCLOSURE LIMITED BY THE INTERNAL CYLINDRICAL WALL OF SAID AN EXTERNAL FEED SPACE ADJACENT TO SAID ANNULAR ENCLOSURE AND FORMED OF THE SPACE LIMITED BY THE WALLS OF THE ELONGATED ENCLOSURE AND THE EXTERNAL CYLINDRICAL WALL OF SAID ANNULAR ENCLOSURE, AN INLET COMMUNICATING WITH THE INTERNAL MANIFOLD ADJACENT TO SAID ANNULAR ENCLOSURE FOR FEEDING THE REACTANTS, AN OUTLET COMMUNICATING WITH THE INTERNAL MANIFOLD ADJACENT TO SAID ANNULAR ENCLOSURE FOR DISCHARGING THE REACTION PRODUCTS,
Claim 3
Dependent Claim
32 words
An apparatus according to claim 1, in which the angle formed by the axis of the truncated cone and one of its generatrices is not less than 10* nor more than 30*.
Claim 4
Dependent Claim
55 words
An apparatus according to claim 1, also including a perforated cylindrical internal distributor between the internal wall of said annular enclosure and the internal manifold of said annular enclosure, the surface of the perforations of said distributor being not less than 2% or more than 7 % of the total surface of the perforated wall.
Claim 5
Dependent Claim
37 words
An apparatus according to claim 3, wherein the perforated distributor extends upwardly beyond the lower level of the screen by a length not less than 10% and not more than 40% of the height of the screen.
Claim 6
Dependent Claim
41 words
An apparatus according to claim 3, in which the area of the perforations of the portion of the perforated distributor located near the foot of the screen is 1.5 to 4 times that of the other perforations of the perforated distributor.
Claim 7
Dependent Claim
37 words
An apparatus according to claim 5, wherein the perforated distributor extends upwardly beyond the lower level of the screen by a length not less than 10% and not more than 40% of the height of the screen.
Claim 8
Dependent Claim
98 words
An apparatus according to claim 1, wherein the upper portion of the external wall of said annular enclosure has the shape of a truncated cone having a height of not less than 10% and not more than 40% of said annular enclosure, the section of said truncateD cone increasing downwardly, the larger base of said truncated cone being substantially equal to the section of said external cylindrical wall of said annular enclosure, and the angle formed by the axis of said truncated cone with one of its generatrices being not less than 2* and not more than 55*.
Claim 9
Dependent Claim
41 words
An apparatus according to claim 7, in which the area of the perforations of the portion of the perforated distributor located near the foot of the screen is 1.5 to 4 times that of the other perforations of the perforated wall.
Claim 10
Dependent Claim
37 words
An apparatus according to claim 7, wherein the perforated distributor extends upwardly beyond the lower level of the screen by a length not less than 10% and not more than 40% of the height of the screen.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |