US4302226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for neutralizing odors
Assignee: QUAD ENVIRONMENTAL TECHNOLOGIES CORP HIGHLAND PARK IL A CORP OF DE
•
Filing: 1979-12-14
•
Granted: 1981-11-24
•
Expires: 1999-12-14
Abstract
Abstract Apparatus, particularly adapted to the removal of odorous constituents from waste gas streams, is described. The apparatus comprises a treatment vessel or chamber preferably of cylindrical shape containing a coaxially-mounted exhaust duct which serves also as a columnar support for the chamber top or roof. As odorous gas is introduced tangentially into an upper portion of the reactor and is caused to move in a spiral flow around the central column. A finely-divided spray of a reagent reactive toward the odorous compound is introduced into the chamber through nozzles ringing the chamber wall or mounted in the chamber roof. Reagent droplets coalesce on the chamber floor and are removed from the vessel. The treated gas exhausts up the central duct through openings located near the bottom thereof.
Inventors
- 👤 Harold J. Rafson
- 👤 Egbert deVries
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:54
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/14; B01D53/18; B01D53/34; Y; Y10; Y10S; Y10S261/00; Y10S261/17
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
179 words
Gas treatment apparatus consisting essentially of a closed cylindrical vessel; gas entry means disposed in an upper portion of said vessel, said entry means arranged to cause gas to tangentially enter the vessel; a columnar duct with an unobstructed interior area having gas exit means in a lower portion disposed coaxially within said vessel and extending continuously from the vessel floor to the vessel roof, said duct fixedly attached to both said floor and said roof to form a structural support for said vessel and to define an annular area between said duct and the vessel wall, said area providing an unobstructed passage for gas flow from said gas entry to said gas exit; a plurality of nozzles disposed in an upper portion of said vessel, said nozzles adapted to inject a very finely divided liquid spray having a median droplet diameter less than about 10 microns into only said annular area formed by the vessel wall and the columnar duct, and liquid exit means communicating between the floor of said annular area and the exterior of said vessel.
Claim 2
Dependent Claim
179 words
Gas treatment apparatus consisting essentially of a closed cylindrical vessel; gas entry means disposed in an upper portion of said vessel, said entry means arranged to cause gas to tangentially enter the vessel; a columnar duct with an unobstructed interior area having gas exit means in a lower portion disposed coaxially within said vessel and extending continuously from the vessel floor to the vessel roof, said duct fixedly attached to both said floor and said roof to form a structural support for said vessel and to define an annular area between said duct and the vessel wall, said area providing an unobstructed passage for gas flow from said gas entry to said gas exit; a plurality of nozzles disposed in an upper portion of said vessel, said nozzles adapted to inject a very finely divided liquid spray having a median droplet diameter less than about 10 microns into only said annular area formed by the vessel wall and the columnar duct, and liquid exit means communicating between the floor of said annular area and the exterior of said vessel.
Claim 3
Dependent Claim
21 words
The apparatus of claim 1 wherein the area of said annulus is substantially larger than the area of said columnar duct.
Claim 4
Dependent Claim
20 words
The apparatus of claim 2 wherein the nozzles are mounted in a spaced pattern in the roof of said vessel.
Claim 5
Dependent Claim
28 words
The apparatus of claim 3 including nozzle mounting means, said mounting means comprising a resilient grommet sized to provide a gripping fit with a forepart of said nozzle.
Claim 6
Dependent Claim
16 words
The apparatus of claim 2 wherein the nozzles are arranged in a ring circling said vessel.
Claim 7
Dependent Claim
28 words
The apparatus of claim 5 including nozzle mounting means, said mounting means comprising a resilient grommet sized to provide a gripping fit with a forepart of said nozzle.
Claim 8
Dependent Claim
21 words
The apparatus of claim 2 wherein said columnar duct extends through and to a level above the roof of said vessel.
Claim 9
Dependent Claim
24 words
The apparatus of claim 7 wherein an induced draft fan is mounted within said duct at a point above the roof of said vessel.
Claim 10
Dependent Claim
24 words
The apparatus of claim 8 including a diluent gas entry port at a level above the vessel roof but below said induced draft fan.
Claim 11
Dependent Claim
18 words
The apparatus of claim 2 wherein the floor of said vessel grades downwardly toward said liquid exit means.
Claim 12
Dependent Claim
24 words
The apparatus of claim 2 wherein at least one port of said gas exit means is located at the floor level of said vessel.
References Cited (Backward Citations)
US2532554A
Cited
US3240254A
Cited
GB1152705A
Cited
US3358413A
Cited
US3550356A
Cited
US3620509A
Cited
US3581467A
Cited
US3729898A
Cited
US3933450A
Cited
US3923955A
Cited
US3944402A
Cited
US3989488A
Cited
US4125589A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-23 | 1985-05-25 | 1985-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-23 | 1989-05-25 | 1989-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-23 | 1993-05-25 | 1993-11-24 | $7700.00 | Window Closed / Lapsed |