US5145612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for mixing vapor in a countercurrent column
Assignee: BP PLC
•
Filing: 1991-05-21
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Granted: 1992-09-08
•
Expires: 2011-05-21
Abstract
Abstract The efficiency of mixing vapor in a countercurrent column (1) is improved by use of one or more vapor risers (6) each incorporating a mixing device (7). The method is suitable for use in countercurrent columns operating at high pressures or under vacuum. For high pressure operation a single riser is preferred positioned in the center of the distributor tray (5).
Inventors
- 👤 Derek W. Reay
- 👤 Stuart Fraser
- 👤 Richard G. Heddle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:55
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/008; B01D3/14; B01D3/16; B01D3/18; B01D3/20
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
81 words
A method for mixing of vapor in a column that provides countercurrent contact between said liquid and said vapor, comprising passing the vapor received from an exchange zone below a distributor tray through one or more risers situated in the base of the tray, each riser being fitted with cover means and incorporating mix imparting means, said mix imparting means providing mixing of said vapor within the riser, and allowing the vapor to pass into an exchange zone above the tray.
Claim 2
Independent Claim
81 words
A method for mixing of vapor in a column that provides countercurrent contact between said liquid and said vapor, comprising passing the vapor received from an exchange zone below a distributor tray through one or more risers situated in the base of the tray, each riser being fitted with cover means and incorporating mix imparting means, said mix imparting means providing mixing of said vapor within the riser, and allowing the vapor to pass into an exchange zone above the tray.
Claim 3
Independent Claim
96 words
A device for collecting and distributing liquid and vapor in a column that provides countercurrent contact between said liquid and said vapor, which is subdivided into a number of exchange zones comprising a distributor tray having one or more risers for the passage of vapor situated in the base of the tray, each riser having a cover means and mix imparting means arranged therein, said mix imparting means providing mixing of said vapor within the riser, and a number of tubes for liquid discharge dispersed in the base of the tray arranged around said vapor risers.
Claim 4
Independent Claim
96 words
A device for collecting and distributing liquid and vapor in a column that provides countercurrent contact between said liquid and said vapor, which is subdivided into a number of exchange zones comprising a distributor tray having one or more risers for the passage of vapor situated in the base of the tray, each riser having a cover means and mix imparting means arranged therein, said mix imparting means providing mixing of said vapor within the riser, and a number of tubes for liquid discharge dispersed in the base of the tray arranged around said vapor risers.
Claim 5
Dependent Claim
26 words
A device according to claim 2 wherein the cover means is a flat plate attached to the top of each riser by a number of legs.
Claim 6
Dependent Claim
16 words
A device according to claim 2 wherein the mix imparting means is a static mixing device.
Claim 7
Dependent Claim
18 words
A device according to claim 4 wherein the static mixing device comprises swirl vanes situated in each riser.
Claim 8
Dependent Claim
13 words
A device according to claim 2 wherein the number of risers is one.
Claim 9
Dependent Claim
17 words
A device according to claim 6 wherein the riser is situated in the centre of the tray.
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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) | 1995-09-08 | 1996-03-09 | 1996-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-08 | 2000-03-09 | 2000-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-08 | 2004-03-09 | 2004-09-08 | $7700.00 | Window Closed / Lapsed |