Patent US3668839A successfully refreshed from Google Patents.
US3668839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air pollution controller
Assignee: Combustion Control Devices
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Filing: 1971-05-28
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Granted: 1972-06-13
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Expires: 1991-05-28
Abstract
Abstract A system for sequential removal of various air pollutants or contaminants such as fly ash, chemicals and hydrocarbons from exhaust systems consists of a series of afterburning, steam, fog, spray and washing chambers which remove toxics, hydrocarbons, fly ash and other undesirables before the fumes are emitted to the atmosphere. The sulfides or other chemicals removed during this process are placed in water solution which can be further refined, reclaimed, neutralized or disposed of.
Inventors
- 👤 Joseph Misarek
- 👤 William W Jaxheimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:48
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/05; B01D47/06; F; F01; F01N; F01N3/00; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
30 words
Apparatus of the type clAimed in claim 1 wherein said afterburner chamber includes a metallic perforated sheet to assist in maintaining a high and uniform temperature within said afterburner chamber.
Claim 2
Dependent Claim
36 words
Apparatus of the type claimed in claim 2 wherein said afterburner chamber further comprises a fluted cone and baffle arrangement to increase agitation of the swirling gases as they enter and progress through the afterburner chamber.
Claim 3
Dependent Claim
28 words
Apparatus of the type claimed in claim 1 wherein said interconnected water spray chambers comprise water fogging and washing chambers for producing condensation of said steam saturated particles.
Claim 4
Dependent Claim
31 words
Apparatus of the type claimed in claim 1 further including conduit means connecting the outlet from said precipitation producing means to said steam vaporizing means in a closed loop circulating system.
Claim 5
Dependent Claim
184 words
Air pollution control apparatus for removing a plurality of contaminants from exhaust gases prior to discharge of said exhaust gases into the atmosphere comprising in combination, housing means incorporating a plurality of pollutant removal stages positioned in associated compartments in a predetermined sequence, means for producing substantially complete combustion of said exhaust gases to remove a first contaminant, said means including connected burner and afterburner stages having inlet and outlet means, steam vaporizing means having associated therewith means for introducing water and removing steam, a steaming medium connected to said outlet means said steaming medium having steam supply means associated with said steam vaporizing means for saturating particles including the remaining contaminants in said exhaust gases, means connected to said steaming medium for precipitating said saturated contaminant particles into solution by passing said exhaust gases through a water spray medium, said water spray medium operating at a temperature lower than that of said steaming medium whereby condensation of said saturated contaminant particles is produced, and means connected to the outlet of said water spray medium for discharging said treated exhaust gases into the atmosphere.
Claim 6
Dependent Claim
43 words
Air pollution apparatus of the type claimed in claim 6 wherein said water spray medium comprises communicating water fogging and scrubbing chamber stages connected between the outlet of said steam chamber and said means for discharging said treated exhaust gases into the atmosphere.
References Cited (Backward Citations)
US3322508A
Cited
US3487620A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |