Patent US3989485A successfully refreshed from Google Patents.
US3989485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for scrubbing exhaust gas from cyclone collectors
Assignee: Intensa Mexico City SA
•
Filing: 1975-02-07
•
Granted: 1976-11-02
•
Expires: 1995-02-07
Abstract
Abstract A scrubber for use with a cyclone collector having a vortex finder through which the collected exhaust gas containing fine particles flows vertically in a rapidly swirling vortex. As the vortex exits from the vortex finder in the cyclone collector, it passes radially outwardly through a parallel plate diffuser into a scrubber housing which has a diameter substantially larger than that of the vortex finder and which extends down over the exit end of the vortex finder. As the vortically flowing exhaust gas vortex passes through the parallel plate diffuser, still having a high tangential velocity, a liquid spray is introduced into the larger diameter vortex to trap fine particles in the exhaust stream, with a baffle means disposed over the end of the vortex finder blocking the entry of the liquid spray into the vortex finder. The liquid droplets and the fine particles trapped therein impinge on the suface of the scrubber housing, due to the relatively great mass of the liquid droplets, and then run or drop down onto the bottom wall of the housing and on out through a drain opening. The cleansed exhaust gas continues to swirl upwardly through the scrubber housing and is discharged through an exhaust duct.
Inventors
- 👤 Rodolfo G. Kilian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:13
CPC Classifications
B; B01; B01D; B01D50/00; B01D47/00; B01D47/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
222 words
The combination comprising a scrubber and a cyclone collector having a vortex finder through which the collected exhaust gas containing fine particles flows vertically in a rapidly swirling vortex, said scrubber comprising the combination of a cylindrical scrubber housing having an inside diameter larger than that of the vortex finder, said scrubber surrounding the exit end of the vortex finder for receiving the vortex as it exits from the finder and allowing the diameter of said vortex to increase, means disposed adjacent the exit end of said vortex finder for substantially preserving the tangential velocity of the particles as the gas passes from the vortex finder into the scrubber housing, spray means disposed adjacent said tangential velocity preservative means for introducing a liquid spray of droplets into the scrubber housing in a manner such as to trap the particles in the exhaust stream in said droplets, the inside walls of said scrubber housing forming an impingement surface for collecting the liquid spray and trapped particles impinging on said surface, drain means cooperating with said scrubber housing for removing from the scrubber the liquid and trapped particles collected on said scrubber housing, exhaust means for discharging the cleansed exhaust stream from the scrubber, and baffle means arranged within said scrubber housing for blocking the entry of said liquid spray into said vortex finder.
Claim 2
Dependent Claim
222 words
The combination comprising a scrubber and a cyclone collector having a vortex finder through which the collected exhaust gas containing fine particles flows vertically in a rapidly swirling vortex, said scrubber comprising the combination of a cylindrical scrubber housing having an inside diameter larger than that of the vortex finder, said scrubber surrounding the exit end of the vortex finder for receiving the vortex as it exits from the finder and allowing the diameter of said vortex to increase, means disposed adjacent the exit end of said vortex finder for substantially preserving the tangential velocity of the particles as the gas passes from the vortex finder into the scrubber housing, spray means disposed adjacent said tangential velocity preservative means for introducing a liquid spray of droplets into the scrubber housing in a manner such as to trap the particles in the exhaust stream in said droplets, the inside walls of said scrubber housing forming an impingement surface for collecting the liquid spray and trapped particles impinging on said surface, drain means cooperating with said scrubber housing for removing from the scrubber the liquid and trapped particles collected on said scrubber housing, exhaust means for discharging the cleansed exhaust stream from the scrubber, and baffle means arranged within said scrubber housing for blocking the entry of said liquid spray into said vortex finder.
Claim 3
Dependent Claim
23 words
A scrubber as set forth in claim 1 wherein said spray means includes a spray nozzle positioned centrally within the said scrubber housing.
Claim 4
Dependent Claim
55 words
A scrubber as set forth in claim 1 wherein said tangential velocity preservative means and said baffle means include a disc spaced from the exit end of the vortex finder and having an outside diameter greater than the inside diameter of the vortex finder for blocking the entry of liquid spray into the vortex finder.
Claim 5
Dependent Claim
57 words
A scrubber as set forth in claim 3 wherein said tangential velocity preservative means also includes an annular plate extending radially outwardly from the exit end of said vortex finder so as to cooperate with said disc to form a parallel plate diffuser for conducting said vortex radially outwardly from the exit end of the vortex finder.
Claim 6
Dependent Claim
213 words
The combination comprising a scrubber and cyclone collector having a vortex finder through which the collected exhaust gas containing fine particles flows vertically in a rapidly swirling vortex, said scrubber comprising, in combination, parallel plate diffuser means adjacent the exit end of the vortex finder for substantially preserving the tangential velocity of the particles as the gas exits from the vortex finder said parallel plate diffuser means including a disc spaced from the exit end of the vortex finder for arresting the gas flow in the vertical direction and an annular plate extending radially outwardly from the exit end of the vortex finder and below said disc to provide a space, means forming a chamber surrounding the disc and spaced from the periphery thereof and defining an impingement surface, spray means adjacent said annular plate for introducing a liquid spray of droplets in the space between the impingement surface of the chamber and the periphery of said disc for trapping particles in the exhaust gas in said droplets by impingement with the liquid spray, means in the lower portion of said chamber for removing said liquid and the particles trapped therein from said chamber, and an outlet in the upper portion of said chamber for removing the scrubbed exhaust gas from said chamber.
Claim 7
Dependent Claim
213 words
The combination comprising a scrubber and cyclone collector having a vortex finder through which the collected exhaust gas containing fine particles flows vertically in a rapidly swirling vortex, said scrubber comprising, in combination, parallel plate diffuser means adjacent the exit end of the vortex finder for substantially preserving the tangential velocity of the particles as the gas exits from the vortex finder said parallel plate diffuser means including a disc spaced from the exit end of the vortex finder for arresting the gas flow in the vertical direction and an annular plate extending radially outwardly from the exit end of the vortex finder and below said disc to provide a space, means forming a chamber surrounding the disc and spaced from the periphery thereof and defining an impingement surface, spray means adjacent said annular plate for introducing a liquid spray of droplets in the space between the impingement surface of the chamber and the periphery of said disc for trapping particles in the exhaust gas in said droplets by impingement with the liquid spray, means in the lower portion of said chamber for removing said liquid and the particles trapped therein from said chamber, and an outlet in the upper portion of said chamber for removing the scrubbed exhaust gas from said chamber.
Claim 8
Dependent Claim
137 words
A process for scrubbing the exhaust gas from a cyclone collector having a vortex finder through which the collected exhaust gas containing fine particles flows vertically in a rapidly swirling vortex, said process comprising the steps of increasing the diameter of said vortex as it leaves the exit of said vortex finder while substantially preserving the tangential velocity of the particles contained therein, continuously introducing a liquid spray of droplets into the larger diameter vortex to trap particles in the exhaust stream in the droplets while blocking entry of the liquid spray into the vortex finder, providing an impingement surface around the outer periphery of the larger diameter vortex and continuously collecting the liquid spray and trapped particles impinging on said surface, and removing the collected liquid and trapped particles from said impingement surface and said vortex.
Claim 9
Dependent Claim
137 words
A process for scrubbing the exhaust gas from a cyclone collector having a vortex finder through which the collected exhaust gas containing fine particles flows vertically in a rapidly swirling vortex, said process comprising the steps of increasing the diameter of said vortex as it leaves the exit of said vortex finder while substantially preserving the tangential velocity of the particles contained therein, continuously introducing a liquid spray of droplets into the larger diameter vortex to trap particles in the exhaust stream in the droplets while blocking entry of the liquid spray into the vortex finder, providing an impingement surface around the outer periphery of the larger diameter vortex and continuously collecting the liquid spray and trapped particles impinging on said surface, and removing the collected liquid and trapped particles from said impingement surface and said vortex.
References Cited (Backward Citations)
US1009963A
Cited
US1110868A
Cited
US2259033A
Cited
US2587416A
Cited
US3526082A
Cited
US3518817A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-02 | 1980-05-03 | 1980-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-02 | 1984-05-03 | 1984-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-02 | 1988-05-03 | 1988-11-02 | $7700.00 | Window Closed / Lapsed |