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US3556489A Expired / Lapsed US ⏱️ 0.0 years remaining

Wet type gas scrubber

Assignee: Nippon Steel Corp
•
Filing: 1967-08-14
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Granted: 1971-01-19
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Expires: 1987-08-14
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Abstract

Abstract A wet gas scrubber, wherein a mechanism for dividing a gas flow into two and for making the cross-sectional area of the gas flow paths variable is provided in a throat part and guides are provided respectively on the upstream side and downstream side of said mechanism so that the pressure loss may be reduced and further the relation between control variables of the variable cross-sectional area mechanism and the gas flow rate may be linearized. The guides are wedge-shaped with the broad ends at the variable mechanism. In one embodiment the variable mechanism comprises a rotor shaft extending transversely of the throat part and a rotor mounted on the shaft. The rotor has a rectangular longitudinal cross section and a transverse cross section which has a different length than width. The rotor has a transverse cross section bounded by a closed curve. In another embodiment the variable mechanism comprises a pair of spaced flexible and stretchable plate members extending along the inside portions of the throat parts. Plate moving elements are connected between the plate parts and are coupled to the plate members for bending the plate members outwardly into the throat parts. In still another embodiment the variable mechanism comprises two spaced sets of bulkhead plates extending along the inside portions of the throat parts. Each set including a first bulkhead plate having one end pivotally mounted on the venturi tube adjacent one gas flow guide and a second bulkhead plate slidably mounted adjacent the other gas flow guide and hingedly coupled to the first bulkhead plate. Plate moving members are connected between the sets of plates and are coupled to the sets of plates for moving the sets of bulkhead plates outwardly into the throat parts.

Inventors

  • 👤 Akiyoshi Ueda

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 15:18
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/10; Y; Y10; Y10S; Y10S261/00; Y10S261/54

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 166 words
A wet venturi type gas scrubber comprising a venturi tube having a throat part with a substantially rectangular crosssectional area transversely of the axis of said venturi tube, a mechanism in said throat part dividing the gas flow path in the throat part into two parts, said mechanism being movable for changing the cross-sectional areas of the parts of the gas flow path, an upstream gas flow guide for dividing the gas flow path into two parts and positioned in said venturi tube on the upstream side of the throat part and the downstream end of said upstream flow guide covering the greater part of said movable mechanism, a downstream gas flow guide positioned in said venturi tube on the downstream side of said throat part for preventing vortexes from being produced in the gas flow, said downstream gas flow guide having the upstream end in contact with said movable mechanism, and means connected to said throat part for injecting a liquid into the throat part.
Claim 2
Dependent Claim 166 words
A wet venturi type gas scrubber comprising a venturi tube having a throat part with a substantially rectangular crosssectional area transversely of the axis of said venturi tube, a mechanism in said throat part dividing the gas flow path in the throat part into two parts, said mechanism being movable for changing the cross-sectional areas of the parts of the gas flow path, an upstream gas flow guide for dividing the gas flow path into two parts and positioned in said venturi tube on the upstream side of the throat part and the downstream end of said upstream flow guide covering the greater part of said movable mechanism, a downstream gas flow guide positioned in said venturi tube on the downstream side of said throat part for preventing vortexes from being produced in the gas flow, said downstream gas flow guide having the upstream end in contact with said movable mechanism, and means connected to said throat part for injecting a liquid into the throat part.
Claim 3
Dependent Claim 24 words
A gas scrubber as claimed in claim 1 in which said gas flow guides are wedge-shaped with the broad ends at said movable mechanism.
Claim 4
Dependent Claim 51 words
A gas scrubber as claimed in claim 1 in which said movable mechanism comprising a rotor shaft extending transversely of the throat part, and a rotor mounted on said shaft, said rotor having a rectangular longitudinal cross section and having a transverse cross section which has a different length than width.
Claim 5
Dependent Claim 22 words
A gas scrubber as claimed in claim 3 in which said rotor has a transverse cross section bounded by a closed curve.
Claim 6
Dependent Claim 56 words
A gas scrubber as claimed in claim 1 in which said movable mechanism comprises a pair of spaced flexible and stretchable plate members extending along the inside portions of the throat parts, and plate moving means between said plate members and coupled to said plate members for bending the plate members outwardly into the throat parts.
Claim 7
Dependent Claim 99 words
A gas scrubber as claimed in claim 1 in which said movable mechanism comprises two spaced sets of bulkhead plates extending along the inside portions of the throat parts, each set including a first bulkhead plate having one end pivotally mounted on the venturi tube adjacent one gas flow guide, and a second bulkhead plate slidably mounted adjacent the other gas flow guide and hingedly coupled to said first bulkhead plate, and plate moving means between said sets of plates and coupled to said sets of plates for moving the sets of bulkhead plates outwardly into the throat parts.

References Cited (Backward Citations)

US1045613A Cited
US1555489A Cited
US2059687A Cited
US2424654A Cited
US2472949A Cited
US2797904A Cited
US2905543A Cited
US3134223A Cited
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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) 1974-01-18 1974-07-20 1975-01-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-01-18 1978-07-20 1979-01-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-01-18 1982-07-20 1983-01-19 $7700.00 Window Closed / Lapsed

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