US3820307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for scrubbing waste gases
Assignee: Individual
•
Filing: 1971-10-12
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Granted: 1974-06-28
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Expires: 1991-10-12
Abstract
Abstract Waste gases from a Bessemer converter or the like are conducted downwardly through a wash tower containing several spray heads above a parallel array of constricted nozzles forming annular gaps to accelerate the flow of the wetted gases from an upper to a lower compartment. Just below a partition separating the two compartments, a lateral outlet for the expanding gases lies above the level of the lower nozzle ends whereby the gas flow undergoes a change of direction with resulting separation of entrained droplets from the gas. The flow then passes downwardly through an adjoining water separator in the form of a vertical cylinder with a central deflector separated from the peripheral wall by an annular clearance containing vanes for imparting swirling motion to the gas stream.
Inventors
- 👤 G Hausberg
- 👤 K Hegemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:23
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/38; C21C5/40; B; B01; B01D; B01D47/00; B01D47/06; Y; Y02; Y02P; Y02P10/00; Y02P10/25; Y10; Y10S; Y10S261/00; Y10S261/54
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
159 words
An apparatus for scrubbing waste gases, comprising: a wash tower with an inlet for waste gases and an outlet for washed gas; partition means in said tower dividing same into an upper compartment communicating with said inlet and a lower compartment communicating with said outlet; spray means in said upper compartment for wetting the incoming waste gases descending from said inlet; nozzle means in said partition means forming at least one throttled passage for the wetted gases to said lower compartment, said nozzle means having a lower end spaced from said partition means, said outlet being located laterally on said tower above the level of said lower end whereby a gas stream exiting from said nozzle means undergoes a change of direction before reaching said outlet; collector means in said lower compartment for droplets separating from said gas stream; and a water separator alongside said tower having an entrance port connected to said outlet by a generally horizontal conduit.
Claim 2
Independent Claim
159 words
An apparatus for scrubbing waste gases, comprising: a wash tower with an inlet for waste gases and an outlet for washed gas; partition means in said tower dividing same into an upper compartment communicating with said inlet and a lower compartment communicating with said outlet; spray means in said upper compartment for wetting the incoming waste gases descending from said inlet; nozzle means in said partition means forming at least one throttled passage for the wetted gases to said lower compartment, said nozzle means having a lower end spaced from said partition means, said outlet being located laterally on said tower above the level of said lower end whereby a gas stream exiting from said nozzle means undergoes a change of direction before reaching said outlet; collector means in said lower compartment for droplets separating from said gas stream; and a water separator alongside said tower having an entrance port connected to said outlet by a generally horizontal conduit.
Claim 3
Dependent Claim
62 words
An apparatus as defined in claim 1 wherein said water separator comprises a vertical cylinder, said entrance port opening centrally downwardly into said cylinder above an upwardly open exit port in line therewith, and a central deflector in said cylinder between said ports, said deflector forming with the peripheral wall of said cylinder an annular channel giving access to said exit port.
Claim 4
Dependent Claim
41 words
An apparatus as defined in claim 2 wherein said deflector is an upwardly tapering body with a circular base of a diameter larger than that of said exit port, said cylinder having an upwardly converging neck merging into said entrance port.
Claim 5
Dependent Claim
27 words
An apparatus as defined in claim 2, further comprising a set of inclined vanes in said channel imparting a swirling motion to the gas stream passing therethrough.
Claim 6
Dependent Claim
25 words
An apparatus as defined in claiM 2, further comprising a run-off surface for separated water in said cylinder below the level of said exit port.
Claim 7
Dependent Claim
28 words
An apparatus as defined in claim 5, further comprising common drain means connected with said collector means in said tower and with said run-off surface in said cylinder.
Claim 8
Dependent Claim
26 words
An apparatus as defined in claim 1 wherein said nozzle means comprises a plurality of parallel nozzles arrayed in said tower about a central vertical axis.
Claim 9
Dependent Claim
21 words
An apparatus as defined in claim 7 wherein said spray means comprises a plurality of spray heads stacked along said axis.
Claim 10
Dependent Claim
36 words
An apparatus as defined in claim 7 wherein said nozzles are provided with tapering inserts defining annular gaps with constricted portions of said nozzles, said gaps being disposed at a level below that of said outlet.
Claim 11
Dependent Claim
37 words
An apparatus as defined in claim 7 wherein said partition means comprises a generally conical wall centered on said axis with a downwardly facing apex, said outlet lying at least partly above the level of said apex.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |