US3928005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for treating gaseous pollutants in a gas stream
Assignee: Fuller Co
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Filing: 1974-02-19
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Granted: 1975-12-23
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Expires: 1994-02-19
Abstract
Abstract A method and apparatus for treating gaseous pollutants such as sulfur dioxide in a gas stream which includes a wet scrubber wherein a compressed gas is used to atomize the scrubbing liquid and a nozzle and the compressed gas direct the atomized liquid countercurrent to the flow of gas to be cleaned. The method and apparatus includes pneumatically conveying to the nozzle a material such as a solid particulate material which reacts with or modifies the pollutant to be removed or altered. The gas used for atomizing the scrubbing liquid is also used as a transport vehicle for the solid particulate material. In the case of sulfur oxides, the material may be pulverized limestone.
Inventors
- 👤 Dennis J Laslo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:25
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/14; B01D53/1456; B01D53/1481; B01D53/34; B01D53/46; B01D53/48; B01D53/50
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
132 words
APPARATUS FOR TREATING GASEOUS POLLUTANTS IN A GAS STREAM COMPRISING: A VESSEL HAVING AN INLET FOR A DIRTY GAS STREAM CONTAINING GASEOUS POLLUTANTS AND AN OUTLET FOR CLEANED GAS; MEANS DIVIDING SAID VESSEL INTO A DIRTY GAS CHAMBER AND A CLEANED GAS CHAMBER; NOZZLE MEANS MOUNTED IN SAID VESSEL; MEANS FOR SUPPLYING A SCRUBBING LIQUID TO SAID NOZZLE MEANS; MEANS FOR SUPPLYING A COM MEANS FOR ATOMIZING SAID SCRUBBING LIQUID WHEREBY SAID NOZZLE MEANS DIRECTS THE ATOMIZED LIQUID INTO THE FLOW OF DIRTY GAS; AND MEANS FOR SUPPLYING A MATERIAL TO SAID MEANS FOR SUPPLYING A COMPRESSED GAS TO SAID NOZZLE MEANS WHEREBY THE MATERIAL IS CONVEYED TO SAID NOZZLE MEANS AND IS DISCHARGED FROM THE NOZZLE MEANS INTO THE FLOW OF DIRTY GAS FOR TREATING GASEOUS POLLUTANTS FROM SAID GAS STREAM.
Claim 2
Dependent Claim
132 words
APPARATUS FOR TREATING GASEOUS POLLUTANTS IN A GAS STREAM COMPRISING: A VESSEL HAVING AN INLET FOR A DIRTY GAS STREAM CONTAINING GASEOUS POLLUTANTS AND AN OUTLET FOR CLEANED GAS; MEANS DIVIDING SAID VESSEL INTO A DIRTY GAS CHAMBER AND A CLEANED GAS CHAMBER; NOZZLE MEANS MOUNTED IN SAID VESSEL; MEANS FOR SUPPLYING A SCRUBBING LIQUID TO SAID NOZZLE MEANS; MEANS FOR SUPPLYING A COM MEANS FOR ATOMIZING SAID SCRUBBING LIQUID WHEREBY SAID NOZZLE MEANS DIRECTS THE ATOMIZED LIQUID INTO THE FLOW OF DIRTY GAS; AND MEANS FOR SUPPLYING A MATERIAL TO SAID MEANS FOR SUPPLYING A COMPRESSED GAS TO SAID NOZZLE MEANS WHEREBY THE MATERIAL IS CONVEYED TO SAID NOZZLE MEANS AND IS DISCHARGED FROM THE NOZZLE MEANS INTO THE FLOW OF DIRTY GAS FOR TREATING GASEOUS POLLUTANTS FROM SAID GAS STREAM.
Claim 3
Dependent Claim
45 words
Apparatus according to claim 1 wherein said means for supplying a compressed gas includes blower means and a conduit extending from said blower means to said nozzle means and said means for supplying material includes means for supplying a solid particulate material into said conduit.
Claim 4
Dependent Claim
24 words
Apparatus according to claim 1 wherein said means for supplying a solid particulate material includes valve means for admitting said material into said conduit.
Claim 5
Independent Claim
115 words
The method of treating gaseous pollutants in a gas stream comprising the steps of; supplying a gas stream containing a gaseous pollutant; supplying a scrubbing liquid to a spray nozzle; supplying gas under pressure to said spray nozzle for atomizing said scrubbing liquid and directing the atomized scrubbing liquid into the stream of gas containing a gaseous pollutant; and supplying a material to said gas under pressure whereby the gas under pressure pneumatically conveys the material to the spary nozzle and is discharged from the spray nozzle into the stream of dirty gas and the material combines with the gaseous pollutant in the gas stream when it contacts the gas stream with the atomized liquid.
Claim 6
Independent Claim
115 words
The method of treating gaseous pollutants in a gas stream comprising the steps of; supplying a gas stream containing a gaseous pollutant; supplying a scrubbing liquid to a spray nozzle; supplying gas under pressure to said spray nozzle for atomizing said scrubbing liquid and directing the atomized scrubbing liquid into the stream of gas containing a gaseous pollutant; and supplying a material to said gas under pressure whereby the gas under pressure pneumatically conveys the material to the spary nozzle and is discharged from the spray nozzle into the stream of dirty gas and the material combines with the gaseous pollutant in the gas stream when it contacts the gas stream with the atomized liquid.
Claim 7
Dependent Claim
22 words
The method of claim 4 wherein said material is a solid particulate material and said solid particulate material absorbs the gaseous pollutant.
Claim 8
Dependent Claim
29 words
The method of claim 4 wherein the gaseous pollutant is an oxide of sulfur and the solid particulate material is limestone and the limestone absorbs the oxide of sulfur.
References Cited (Backward Citations)
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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) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |