Patent US3584440A successfully refreshed from Google Patents.
US3584440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concentric annular venturi gas scrubber
Assignee: Chemical Construction Corp
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Filing: 1969-03-19
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Granted: 1971-06-15
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Expires: 1989-03-19
Abstract
Abstract An apparatus is provided for scrubbing an impurity-laden gas stream with a scrubbing liquid such as water to remove impurities from the gas into the liquid phase. The apparatus provides circular concentric or annular venturi passages for the gasliquid contact, by the provision of a vertical gas scrubbing container in which a central conical baffle, an annular or concentric angular ring-shaped baffle, and an outer inverted frustoconical baffle are coaxially and concentrically disposed, with the apexes of the central baffle and the angular ring-shaped baffle extending upwards, and with the baffles being spaced apart so as to provide two concentric annular venturi-type gas scrubbing passages, so that large volumes of impurity-laden gas may be uniformly scrubbed with low gas pressure drop loss.
Inventors
- 👤 Julio S Vigil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:07
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/10; Y; Y10; Y10S; Y10S261/00; Y10S261/54
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
295 words
An apparatus for scrubbing an impurity-laden gas stream with a liquid for impurity removal which comprises a vertically oriented cylindrical conduit, means to pass an impurity-laden gas stream downwards through said conduit, means for spraying a scrubbing liquid into said gas stream adjacent to the lower end of said conduit, a cylindrical gas scrubbing container, said container depending coaxially downwards from the lower end of said conduit and being provided with lower means for removal of impurity-laden scrubbing liquid, a central conical baffle, said central baffle being coaxially disposed within said container adjacent to the lower end of said conduit and below said liquid spray means, with the apex of said conical baffle extending upwards and opposed to the downwards flow of gas and liquid spray droplets, an annular horizontal circular baffle within said container, said annular baffle being concentrically and coaxially juxtaposed about the perimeter of said conical baffle, said annular baffle being spaced from said conical baffle, whereby a first circular annular passage for gas and spray liquid flow is defined between said conical baffle and said annular baffle, the upper surface of said annular baffle being defined by a triangular annular projection having an upper central apex, a horizontal inverted frustoconical baffle within said container means for directing liquid onto said frustoconical baffles inner surface, said inverted frustoconical baffle being concentrically and coaxially juxtaposed about the outer perimeter of said annular baffle and joined to said container, said inverted frustoconical baffle being spaced from said annular baffle, whereby a second circular annular passage for gas and spray liquid flow is defined between said annular baffle and said inverted frustoconical baffle, and means in said container downstream of said baffles to remove a scrubbed gas stream of reduced impurity content from said container.
Claim 2
Independent Claim
295 words
An apparatus for scrubbing an impurity-laden gas stream with a liquid for impurity removal which comprises a vertically oriented cylindrical conduit, means to pass an impurity-laden gas stream downwards through said conduit, means for spraying a scrubbing liquid into said gas stream adjacent to the lower end of said conduit, a cylindrical gas scrubbing container, said container depending coaxially downwards from the lower end of said conduit and being provided with lower means for removal of impurity-laden scrubbing liquid, a central conical baffle, said central baffle being coaxially disposed within said container adjacent to the lower end of said conduit and below said liquid spray means, with the apex of said conical baffle extending upwards and opposed to the downwards flow of gas and liquid spray droplets, an annular horizontal circular baffle within said container, said annular baffle being concentrically and coaxially juxtaposed about the perimeter of said conical baffle, said annular baffle being spaced from said conical baffle, whereby a first circular annular passage for gas and spray liquid flow is defined between said conical baffle and said annular baffle, the upper surface of said annular baffle being defined by a triangular annular projection having an upper central apex, a horizontal inverted frustoconical baffle within said container means for directing liquid onto said frustoconical baffles inner surface, said inverted frustoconical baffle being concentrically and coaxially juxtaposed about the outer perimeter of said annular baffle and joined to said container, said inverted frustoconical baffle being spaced from said annular baffle, whereby a second circular annular passage for gas and spray liquid flow is defined between said annular baffle and said inverted frustoconical baffle, and means in said container downstream of said baffles to remove a scrubbed gas stream of reduced impurity content from said container.
Claim 3
Dependent Claim
27 words
The apparatus of claim 1, in which said means for spraying a scrubbing liquid into said gas stream is disposed within the lower end of said conduit.
Claim 4
Dependent Claim
40 words
The apparatus of claim 1, in which said means for spraying a scrubbing liquid into said gas stream consists of a plurality of spray nozzles, together with means to pass a scrubbing liquid stream to each of said spray nozzles.
Claim 5
Dependent Claim
18 words
The apparatus of claim 1, in which said conduit terminates with a lower end section within said container.
Claim 6
Dependent Claim
24 words
The apparatus of claim 1, in which the upper perimeter of said inverted frustoconical baffle is connected to said container by a fluid-impervious connection.
Claim 7
Dependent Claim
177 words
The apparatus of claim 1, in which said means to remove impurity-laden scrubbing liquid from the lower portion of said container comprises means to remove scrubbing liquid at a controlled rate, whereby a body of scrubbing liquid is maintained in the lower part of said container, said means including a liquid level sensitive element, said element being disposed within said container and serving to measure the level of liquid within the lower part of said container, a controller external to said container, means to transmit a signal proportional to liquid level from said element to said controller, a control valve, said control valve being disposed at a lower scrubbing liquid outlet from said container and serving to control scrubbing liquid flow rate through said outlet, and means to transmit a control signal from said controller to said control valve, whereby the flow rate of scrubbing liquid through said lower liquid outlet is regulated such that a body of scrubbing liquid containing impurity removed from said gas stream is continuously maintained within the lower portion of said container.
Claim 8
Dependent Claim
165 words
The apparatus of claim 1, combined with a first vertically oriented cylindrical baffle, said first cylindrical baffle depending downwards from the lower perimeter of said conical baffle, a second vertically oriented cylindrical baffle, said second cylindrical baffle depending downwards from the lower inner perimeter of the angular projection of said annular baffle, said second cylindrical baffle being concentric with and spaced opposite to said first cylindrical baffle, whereby said first and second cylindrical baffles define a vertical venturi throat section of said first annular passage, a third vertically oriented cylindrical baffle, said third cylindrical baffle depending downwards from the lower outer perimeter of the angular projection of said annular baffle, and a fourth vertically oriented cylindrical baffle, said fourth cylindrical baffle depending downwards from the lower perimeter of said inverted frustoconical baffle, said fourth cylindrical baffle being concentric with and spaced opposite to said third cylindrical baffle, whereby said third and fourth cylindrical baffles define a vertical venturi throat section of said second annular passage.
Claim 9
Dependent Claim
116 words
The apparatus of claim 7, in which a first inverted frustoconical baffle depends downwards from the lower perimeter of said first cylindrical baffle, a horizontal disc-shaped baffle extends across the opening defined by the lower perimeter of said first inverted frustoconical baffle, a first frustoconical baffle depends downwards from the lower perimeter of said second cylindrical baffle, a second inverted frustoconical baffle depends downwards from the lower perimeter of said third cylindrical baffle, a horizontal flat ring-shaped annular baffle extends across the annular opening defined by the lower perimeters of said first frustoconical baffle and said second inverted frustoconical baffle, and a second frustoconical baffle depends downwards from the lower perimeter of said fourth cylindrical baffle.
Claim 10
Dependent Claim
111 words
The apparatus of claim 1, in which a coaxial vertically oriented cylindrical conduit is provided within said container and below said baffles, whereby the mixture of scrubbed gas and impurity-laden liquid droplets discharged from said first and second circular annular passages flows downwards through said cylindrical conduit, said cylindrical conduit terminating above the lower end of said container, together with entrained liquid separator means disposed in the annular passage between said cylindrical conduit and said container to separate entrained liquid droplets from the scrubbed gas stream, said means to remove a scrubbed gas stream of reduced impurity content from said container extending from said container above said entrained liquid separator means.
Claim 11
Dependent Claim
17 words
The apparatus of claim 9, in which said entrained liquid separator means is a horizontal mesh filter.
Claim 12
Independent Claim
580 words
An apparatus for scrubbing an impurity-laden gas stream with a liquid for impurity removal which comprises a first vertically oriented cylindrical conduit, means to pass an impurity-laden gas stream downwards through said first conduit, means for spraying a scrubbing liquid into said gas stream adjacent to the lower end of said conduit, a cylindrical gas scrubbing container, said container depending coaxially downwards from the lower end of said first conduit and being provided with lower means for removal of impurity-laden scrubbing liquid, a generally conical central baffle, said central baffle being coaxially disposed within said container adjacent to the lower end of said first condUit and below said liquid spray means, with the apex of said conical central baffle extending upwards and opposed to the downwards flow of gas and liquid spray droplets, said conical central baffle being provided with a vertical cylindrical section depending downwards from the upper conical portion of said central baffle and a lower inverted frustoconical section depending downwards from said cylindrical section, an annular horizontal circular baffle within said container, said annular baffle being concentrically and coaxially juxtaposed about the outer perimeter of said conical baffle, said annular baffle being spaced from said conical baffle, whereby a first circular annular passage for gas and spray liquid flow is defined between said conical central baffle and said annular baffle, the upper surface of said annular baffle being defined by a triangular annular projection having an upper central apex, a horizontal ring-shaped section having opposed inner and outer cylindrical surfaces and depending downwards from said angular projection, the inner cylindrical surface of said horizontal ring-shaped section being spaced opposite to the vertical cylindrical section of said conical central baffle, the lower section of said annular baffle being defined by an inner frustoconical surface and an outer inverted frustoconical surface, said lower section of said annular baffle depending downwards from said ring-shaped section, a horizontal inverted frustoconical baffle within said container means for directing liquid onto said frustoconical baffles inner surface, said inverted frustoconical baffle being joined to said container and concentrically and coaxially juxtaposed about the outer perimeter of said annular baffle and being provided with a lower vertical cylindrical section which depends downwards from the lower perimeter of said inverted frustoconical baffle and is spaced opposite to the outer cylindrical surface of said horizontal ring-shaped section of said annular baffle, said inverted frustoconical baffle and said dependent vertical cylindrical section being spaced from said annular baffle, whereby a second circular annular passage for gas and spray liquid flow is defined between said annular baffle and said inverted frustoconical baffle, an outer frustoconical baffle within said container, said frustoconical baffle depending downwards from the lower end of the vertical cylindrical section of said inverted frustoconical baffle, a second vertically oriented cylindrical conduit, said second conduit being coaxially disposed within said container and below said baffles, said second conduit depending downwards from said outer frustoconical baffle, whereby the mixture of scrubbed gas and impurity-laden liquid droplets discharged from said first and second circular annular passages flows downwards through said second conduit, said second conduit terminating above the lower end of said container, together with entrained liquid separator means disposed in the annular passage between said second conduit and said container to separate entrained liquid droplets from the scrubbed gas stream, and means extending from said container above said entrained liquid separator means and communicating therewith to remove a scrubbed gas stream of reduced impurity content from said container.
Claim 13
Independent Claim
580 words
An apparatus for scrubbing an impurity-laden gas stream with a liquid for impurity removal which comprises a first vertically oriented cylindrical conduit, means to pass an impurity-laden gas stream downwards through said first conduit, means for spraying a scrubbing liquid into said gas stream adjacent to the lower end of said conduit, a cylindrical gas scrubbing container, said container depending coaxially downwards from the lower end of said first conduit and being provided with lower means for removal of impurity-laden scrubbing liquid, a generally conical central baffle, said central baffle being coaxially disposed within said container adjacent to the lower end of said first condUit and below said liquid spray means, with the apex of said conical central baffle extending upwards and opposed to the downwards flow of gas and liquid spray droplets, said conical central baffle being provided with a vertical cylindrical section depending downwards from the upper conical portion of said central baffle and a lower inverted frustoconical section depending downwards from said cylindrical section, an annular horizontal circular baffle within said container, said annular baffle being concentrically and coaxially juxtaposed about the outer perimeter of said conical baffle, said annular baffle being spaced from said conical baffle, whereby a first circular annular passage for gas and spray liquid flow is defined between said conical central baffle and said annular baffle, the upper surface of said annular baffle being defined by a triangular annular projection having an upper central apex, a horizontal ring-shaped section having opposed inner and outer cylindrical surfaces and depending downwards from said angular projection, the inner cylindrical surface of said horizontal ring-shaped section being spaced opposite to the vertical cylindrical section of said conical central baffle, the lower section of said annular baffle being defined by an inner frustoconical surface and an outer inverted frustoconical surface, said lower section of said annular baffle depending downwards from said ring-shaped section, a horizontal inverted frustoconical baffle within said container means for directing liquid onto said frustoconical baffles inner surface, said inverted frustoconical baffle being joined to said container and concentrically and coaxially juxtaposed about the outer perimeter of said annular baffle and being provided with a lower vertical cylindrical section which depends downwards from the lower perimeter of said inverted frustoconical baffle and is spaced opposite to the outer cylindrical surface of said horizontal ring-shaped section of said annular baffle, said inverted frustoconical baffle and said dependent vertical cylindrical section being spaced from said annular baffle, whereby a second circular annular passage for gas and spray liquid flow is defined between said annular baffle and said inverted frustoconical baffle, an outer frustoconical baffle within said container, said frustoconical baffle depending downwards from the lower end of the vertical cylindrical section of said inverted frustoconical baffle, a second vertically oriented cylindrical conduit, said second conduit being coaxially disposed within said container and below said baffles, said second conduit depending downwards from said outer frustoconical baffle, whereby the mixture of scrubbed gas and impurity-laden liquid droplets discharged from said first and second circular annular passages flows downwards through said second conduit, said second conduit terminating above the lower end of said container, together with entrained liquid separator means disposed in the annular passage between said second conduit and said container to separate entrained liquid droplets from the scrubbed gas stream, and means extending from said container above said entrained liquid separator means and communicating therewith to remove a scrubbed gas stream of reduced impurity content from said container.
Claim 14
Dependent Claim
28 words
The apparatus of claim 11, in which said means for spraying a scrubbing liquid into said gas stream is disposed within the lower end of said first conduit.
Claim 15
Dependent Claim
40 words
The apparatus of claim 11, in which said means for spraying a scrubbing liquid into said gas stream consists of a plurality of spray nozzles, together with means to pass a scrubbing liquid stream to each of said spray nozzles.
Claim 16
Dependent Claim
19 words
The apparatus of claim 11, in which said first conduit terminates with a lower end section within said container.
Claim 17
Dependent Claim
24 words
The apparatus of claim 11, in which the upper perimeter of said inverted frustoconical baffle is connected to said container by a fluid-impervious connection.
Claim 18
Dependent Claim
17 words
The apparatus of claim 11, in which Said entrained liquid separator means is a horizontal mesh filter.
Claim 19
Dependent Claim
177 words
The apparatus of claim 11, in which said means to remove impurity-laden scrubbing liquid from the lower portion of said container comprises means to remove scrubbing liquid at a controlled rate, whereby a body of scrubbing liquid is maintained in the lower part of said container, said means including a liquid level sensitive element, said element being disposed within said container and serving to measure the level of liquid within the lower part of said container, a controller external to said container, means to transmit a signal proportional to liquid level from said element to said controller, a control valve, said control valve being disposed at a lower scrubbing liquid outlet from said container and serving to control scrubbing liquid flow rate through said outlet, and means to transmit a control signal from said controller to said control valve, whereby the flow rate of scrubbing liquid through said lower liquid outlet is regulated such that a body of scrubbing liquid containing impurity removed from said gas stream is continuously maintained within the lower portion of said container.
Claim 20
Dependent Claim
33 words
The apparatus of claim 11, in which the upper apex of the angular projection of said annular baffle is spaced vertically at a lower elevation than the apex of said central conical baffle.
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) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |