US4125589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Odor control system
Assignee: Quad Environmental Technologies Corp
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Filing: 1976-01-16
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Granted: 1978-11-14
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Expires: 1996-01-16
Abstract
Abstract An apparatus and process for treating gases containing odoriferous constituents is described. The gas is passed through a condenser to remove the condensable materials and the non-condensed portion is then introduced into the top portion treating vessel. There it is contacted with a finely divided aqueous spray having a droplet diameter of up to 10 microns in diameter, whereby odoriferous constituents are removed. The treated gas is removed from the vessel at the bottom through a duct. Outside air may be introduced through a damper to mix with the exit gas, which is substantially saturated with moisture, to lower its dew point.
Inventors
- 👤 Egbert deVries
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:55
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D57/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
162 words
A process for treating vapors containing offensive or foul-smelling constituents comprising organic sulfides, amines, aldehydes, ketones, alcohols and the like; which comprises passing the vapors through a condensing zone to remove condensable constituents from said vapors; treating said uncondensed vapors in a spray treatment zone, said treatment consisting of the following steps: (a) passing the uncondensed vapors into the upper region of a spray treatment zone; (b) introducing into the upper portion of said treatment zone a finely divided spray consisting essentially of water and an oxidising agent and having a droplet diameter of up to about 10 microns; (c) allowing the droplets to fall unimpeded through the spray treatment zone for at least about 20 seconds whereby offensive or foul-smelling constituents are removed from said vapor; (d) removing treated vapor from the lower portion of the treatment zone, and; (e) separately removing settled out spray liquid, now containing said offensive and foul-smelling material, from the lower portion of the treatment zone.
Claim 2
Dependent Claim
162 words
A process for treating vapors containing offensive or foul-smelling constituents comprising organic sulfides, amines, aldehydes, ketones, alcohols and the like; which comprises passing the vapors through a condensing zone to remove condensable constituents from said vapors; treating said uncondensed vapors in a spray treatment zone, said treatment consisting of the following steps: (a) passing the uncondensed vapors into the upper region of a spray treatment zone; (b) introducing into the upper portion of said treatment zone a finely divided spray consisting essentially of water and an oxidising agent and having a droplet diameter of up to about 10 microns; (c) allowing the droplets to fall unimpeded through the spray treatment zone for at least about 20 seconds whereby offensive or foul-smelling constituents are removed from said vapor; (d) removing treated vapor from the lower portion of the treatment zone, and; (e) separately removing settled out spray liquid, now containing said offensive and foul-smelling material, from the lower portion of the treatment zone.
Claim 3
Dependent Claim
23 words
The method of claim 1 wherein the uncondensed and the treated vapors are respectively introduced and removed tangentially from the spray treatment zone.
Claim 4
Dependent Claim
24 words
The method of claim 2 wherein the spray comprises NaOCl having a concentration of from about 10 to about 50,000 ppm in aqueous solution.
Claim 5
Dependent Claim
19 words
The method of claim 3 wherein the NaOCl has a concentration of from about 100 to about 500 ppm.
Claim 6
Dependent Claim
14 words
The method of claim 4 wherein the NaOCl has a concentration of 200 ppm.
Claim 7
Dependent Claim
47 words
The method of claim 2 wherein the treated vapors are removed from the treatment zone through an exit line and suction is applied to said vapors within said line at a location outside said zone to aid in moving the vapors through the condensing and treatment zones.
Claim 8
Dependent Claim
26 words
The method of claim 6 wherein the aqueous spray comprises NaOCl having a concentration of from about 100 ppm to about 500 ppm in aqueous solution.
Claim 9
Dependent Claim
15 words
The method of claim 7 wherein the NaOCl has a concentration of about 200 ppm.
Claim 10
Dependent Claim
46 words
The method of claim 6 wherein ambient air containing less moisture than the treated vapors is introduced into the exit line at a location between the treatment zone and the suction location to lower the dew point of the treated vapors removed from the treatment zone.
Claim 11
Dependent Claim
25 words
The method of claim 9 wherein the aqueous spray comprises NaOCl having a concentration of from about 100 to about 500 ppm in aqueous solution.
Claim 12
Dependent Claim
15 words
The method of claim 10 wherein the NaOCl has a concentration of about 200 ppm.
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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) | 1981-11-13 | 1982-05-15 | 1982-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-13 | 1986-05-15 | 1986-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-13 | 1990-05-15 | 1990-11-14 | $7700.00 | Window Closed / Lapsed |