US3393901A - Gas scrubbing apparatus - Google Patents

Gas scrubbing apparatus Download PDF

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Publication number
US3393901A
US3393901A US423707A US42370765A US3393901A US 3393901 A US3393901 A US 3393901A US 423707 A US423707 A US 423707A US 42370765 A US42370765 A US 42370765A US 3393901 A US3393901 A US 3393901A
Authority
US
United States
Prior art keywords
gas
dampers
section
throat section
upstream
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US423707A
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English (en)
Inventor
Krause George Douglas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
American Air Filter Co Inc
Original Assignee
American Air Filter Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by American Air Filter Co Inc filed Critical American Air Filter Co Inc
Priority to US423707A priority Critical patent/US3393901A/en
Priority to GB46186/65A priority patent/GB1130501A/en
Priority to FR39566A priority patent/FR1454828A/fr
Priority to DE1571752A priority patent/DE1571752C3/de
Application granted granted Critical
Publication of US3393901A publication Critical patent/US3393901A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/10—Venturi scrubbers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/54—Venturi scrubbers

Definitions

  • a venturi-ty-pe gas scrubbing apparatus including a contraction section, an intermediate throat section, and an expansion section, the throat section having adjusting means independently operative of the contraction and expansion section, and means to introduce washing liquid in opposed paths normal to the gas stream to be treated at a location upstream the throat section immediately adjacent the adjusting means in such throat section.
  • the present invention relates to gas scrubbing apparatus and more particularly to improved gas scrubbing apparatus of venturi shape utilized to remove finely divided suspended matter from dirty waste gases.
  • venturi-sh'aped gas scrubbers for removing fine dusts and for eliminating noxious smoke particles, fogs, and fumes discharged by industrial processes has long been known in the art.
  • venturi-shaped gas scrubbers are employed there are frequent and considerable variations in the amounts of dust-laden gases introduced into the scrubbers.
  • the volumes of dirty gas emitted in the process increase substantially during oxygen lancing operations.
  • some attempts have been made in the past to provide arrangements which maintain uniform gas velocities. For the most part, these past arrangements have not proven satisfactory.
  • the apparatus employed has been complex, cumbersome, and uneconomical, requiring frequent adjustments of an over-all system and creating alignment and gas resistance problems with each incremental change made to such system.
  • straightforward structural arrangement which permits ad-
  • the present invention provides an economical and straightforward structural arrangement which permits adjustments to be made quickly and efiiciently to obtain uniform gas velocities in a venturi-shaped scrubber in accordance with changing gas volumes delivered thereto.
  • the present invention provides a structural arrangement which permits adjustments to be accomplished in a symmetrical fashion with a minimum of geometrical contour change to the over-all structure and with a mini mum of operating steps and movement of parts.
  • the present invention provides gas scrubbing apparatus comprising: a venturi-shaped gas defining passage including a contraction section, an intermediate throat section, and an expansion section; means for introducing washing liquid into the gas defining passage upstream the throat section; adjusting means to vary the cross-sectional area of the throat section independently of the upstream contraction section and the downstream expansion section, the adjusting means including a pair of spaced, relatively movable dampers with spaced opposed faces thereof defining the throat section; and means to move the dampers relative each other to vary the cross-sectional area of such throat section.
  • FIGURE 1 is an isometric view of a gas scrubbing apparatus incorporating the novel features of the present invention.
  • FIGURE 2 is a vertical, cross-sectional view taken in the plane passing through line 22 of FIGURE 1, this figure further disclosing the manner in which the apparatus of FIGURE 1 is incorporated into duct Work connected to a source of dirty gas from an industrial process (not shown).
  • the gas stream to be scrubbed of finely suspended contaminant matter is conducted from a process source (not shown) by duct 1 to the novel venturi-shaped gas scrubbing apparatus, broadly desig nated by reference numeral 2.
  • Gas scrubbing apparatus 2 which advantageously is of varying cross-sectional area of rectangular configuration, includes upstream converging contraction section 3, intermediate throat section 4, and downstream diverging expansion section 6.
  • the upstream converging contraction section 3 can be connected to duct 1 by bolting or by some other suitable means.
  • downstream diverging expansion section 6 can be connected to an outlet duct 7. It is to be noted that outlet duct 7 also can be diverging, the amount and extent of divergence in both the contraction and expansion sections depending upon the nature of the installation and the results desired.
  • damper boxes 8 Positioned intermediate upstream contraction section 3 and downstream expansion section 6 adjacent throat section 4 so as to be equally spaced from a plane passing through the central longitudinal axis of flow of the gas scrubber is a pair of damper boxes 8. Pivotally mounted within damper boxes 8 to nest therein when in full or open position is a pair of spaced dampers 9. Dampers 9 are so contoured that the spaced, opposed mirror-image faces thereof are successively inwardly and outwardly inclined about the central longitudinal passage of the scrubber to provide successive upstream converging and downstream diverging passages 11 and 12 respectively.
  • the inclination of the faces of the dampers is such that when the dampers are in full or open position, the upstream faces of the passage 11 are substantially aligned with opposed walls of the converging contraction section 3, and the downstream faces of passages 12 are substantially aligned with opposed Walls of diverging expansion section 6.
  • each damper is fixed to a shaft 13 which, in turn, is rotatably journaled in the sidewalls of damper box 8.
  • Each shaft 13 extends through a sidewall of its damper box and has fixed to its extended end a worm wheel 14.
  • Worm wheels 14 are designed to mesh with worms 16 mounted at the extremities of driven shaft 17.
  • Shaft 17 can be rotated through a suitable worm and gear arrangement 18 by means of drive shaft 19 connected to a suitable source of power (not shown).
  • one of shafts 13 is provided with a suitable pointer 21, pointer 21 cooperating with plate 22 mounted on a sidewall of scrubber 2.
  • Plate 22 is provided with a graduated scale thereon so that the position of the pointer relative the scale indicates the positioning of the dampers 9 in the scrubber apparatus.
  • Discharge nozzles 24, which extend through damper boxes 8, are connected to a suitable source of liquid (not shown) and can be controlled in any one of a number of ways to adjust the amount of liquid delivered to the system in accordance with the amount of gas treated.
  • a further pair of nozzles 28 are provided to cooperate with each of damper boxes 8 to flush the dampers 9 whenever necessary to maintain the dampers in efficient operating condition.
  • Gas scrubbing apparatus comprising: a venturishaped gas defining passage including an upstream contraction section, an intermediate throat section, and a downstream expansion section; spaced opposed bafiie means fixedly mounted and extending normally to the gas defining passage upstream said throat for introducing washing liquid from opposite sides of said gas defining passage in opposed sheet-like paths normal to the direction of gas flow and into said gas defining passage upstream said throat section to increase the gas liquid contact at said throat section; adjusting means positioned immediately below said bafie means for introducing washing liquid to vary the cross-sectional area of said throat section independently of said contraction section and said expansion section; said adjusting means including a pair of spaced, relatively movable dampers the top portions of which, when in fully open position, are positioned immediately below said bafiie means, said dampers having spaced opposed side faces thereof defining a portion of said throat section; and means to move said dampers relative to each other and relative to said bafiie means to carry the cross-sectional area of said throat section, the top portions of said damp
  • said means to move said dampers including damper drive means coupled to both of said dampers to move said dampers toward and away from each other about a lOngtudinally extending plane passing through the center line of said throat section to vary the cross-sectional area of said throat section in a symmetrical fashion.
  • said side faces of said dampers including opposed inclined cutaway sections along opposed upstream and downstream faces thereof alignable with the opposed converging ends of said contraction section and expansion section respectively when said dampers are in fully open position.
  • Gas scrubbing apparatus comprising: a venturishaped gas defining passage including an upstream contraction section, an intermediate throat section, and a downstream expansion section; spaced opposed batfie means fixedly mounted and extending normally to the gas defining passage upstream said throat for introducing washing liquid from opposed sides of said gas defining passage in opposed paths normal to the direction of gas flow into said gas defining passage upstream said throat section to increase gas-liquid contact at said throat section; a pair of damper boxes adjacent said throat section; a pair of spaced, relatively movable dampers the top portions of which when in fully open position are positioned immediately below said bafiie means for introducing washing liquid and disposed within said boxes, said dampers having spaced opposed faces defining a portion of said throat section; means to move said dampers relative to each other and relative to said batfie means to vary the crosssectional area of said throat section independently of said contraction section and said expansion section, the top portions of said dampers serving as extensions of said 'bafiie means when said dampers are moved from fully open position, and
  • Gas scrubbing apparatus comprising; a venturishaped gas defining passage having a varying cross-sectional area of rectangular configuration and including a converging upstream contraction section, an intermediate throat section, and a diverging downstream expansion section; a pair of damper boxes adjacent said throat section, a pair of spaced dampers pivotally disposed within said boxes, said dampers having inclined cutaway sections along the opposed upstream and downstream faces thereof alignable with the opposed converging walls of said contraction section and expansion section respectively when said dampers are pivoted to fully open position; damper drive means coupled to both of said dampers to pivotally move said dampers simultaneously toward and away from each other about a longitudinally extending plane passing through the center line of said throat section to vary the cross-sectional area of said throat section in a symmetrical fashion; means for introducing a flushing liquid into said damper boxes to clean the same; and means for introducing washing liquid into said gas defining passage upstream said throat section including a pair of oppositely disposed inclined bafiles disposed within said damper box upstream said damp

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Gas Separation By Absorption (AREA)
  • Treating Waste Gases (AREA)
  • Separation Of Particles Using Liquids (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
US423707A 1965-01-06 1965-01-06 Gas scrubbing apparatus Expired - Lifetime US3393901A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US423707A US3393901A (en) 1965-01-06 1965-01-06 Gas scrubbing apparatus
GB46186/65A GB1130501A (en) 1965-01-06 1965-11-01 Gas scrubbing apparatus
FR39566A FR1454828A (fr) 1965-01-06 1965-11-24 Appareil épurateur de gaz
DE1571752A DE1571752C3 (de) 1965-01-06 1966-01-05 Vorrichtung zum Reinigen von Gasen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US423707A US3393901A (en) 1965-01-06 1965-01-06 Gas scrubbing apparatus

Publications (1)

Publication Number Publication Date
US3393901A true US3393901A (en) 1968-07-23

Family

ID=23679902

Family Applications (1)

Application Number Title Priority Date Filing Date
US423707A Expired - Lifetime US3393901A (en) 1965-01-06 1965-01-06 Gas scrubbing apparatus

Country Status (4)

Country Link
US (1) US3393901A (fr)
DE (1) DE1571752C3 (fr)
FR (1) FR1454828A (fr)
GB (1) GB1130501A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3572655A (en) * 1969-09-02 1971-03-30 John E Brown Polluted air abatement device
US3638924A (en) * 1967-03-03 1972-02-01 Slick Ind Co Scrubbers with adjustable venturis
US4002441A (en) * 1975-03-21 1977-01-11 Willard Lewis Johnson Wash section for air-cleaning device
US4023942A (en) * 1972-05-30 1977-05-17 Fmc Corporation Variable throat venturi scrubber
US5336284A (en) * 1993-03-29 1994-08-09 Compliance Systems International, Inc. Multiple throat, narrow gap venturi scrubber and method of using same
US5826800A (en) * 1993-09-15 1998-10-27 Reither; Karl Venturi cleaning system with two adjustable venturi grooves
US20070098314A1 (en) * 2005-11-02 2007-05-03 Lenick Louis J Bearing locking collar retainer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT330136B (de) * 1971-02-01 1976-06-10 Waagner Biro Ag Wascheinrichtung fur staubhaltige oder durch schadgasbestandteile verunreinigte rohgasstrome
SE355144B (fr) * 1971-03-23 1973-04-09 Svenska Flaektfabriken Ab

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3069146A (en) * 1960-08-30 1962-12-18 Soroban Engineering Inc Variable venturi carburetor
GB925711A (en) * 1959-02-12 1963-05-08 Stamicarbon Method and apparatus for removing dust from gases
US3138647A (en) * 1960-07-12 1964-06-23 Svenska Flaektfabriken Ab Arrangement in an apparatus for the supply and atomizing of a liquid in a gaseous medium
FR1381962A (fr) * 1963-02-09 1964-12-14 Metallgesellschaft Ag Perfectionnement au dispositif pour faire varier la section transversale du col de venturi de laveurs
FR1381961A (fr) * 1963-02-09 1964-12-14 Metallgesellschaft Ag Dispositif pour faire varier la section transversale du col de venturi de laveurs afin de maintenir constante la vitesse du gaz dans la section du col
FR1381963A (fr) * 1963-02-12 1964-12-14 Metallgesellschaft Ag Dispositif pour faire varier la section transversale du col des venturis de laveurs

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB925711A (en) * 1959-02-12 1963-05-08 Stamicarbon Method and apparatus for removing dust from gases
US3138647A (en) * 1960-07-12 1964-06-23 Svenska Flaektfabriken Ab Arrangement in an apparatus for the supply and atomizing of a liquid in a gaseous medium
US3069146A (en) * 1960-08-30 1962-12-18 Soroban Engineering Inc Variable venturi carburetor
FR1381962A (fr) * 1963-02-09 1964-12-14 Metallgesellschaft Ag Perfectionnement au dispositif pour faire varier la section transversale du col de venturi de laveurs
FR1381961A (fr) * 1963-02-09 1964-12-14 Metallgesellschaft Ag Dispositif pour faire varier la section transversale du col de venturi de laveurs afin de maintenir constante la vitesse du gaz dans la section du col
FR1381963A (fr) * 1963-02-12 1964-12-14 Metallgesellschaft Ag Dispositif pour faire varier la section transversale du col des venturis de laveurs

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3638924A (en) * 1967-03-03 1972-02-01 Slick Ind Co Scrubbers with adjustable venturis
US3572655A (en) * 1969-09-02 1971-03-30 John E Brown Polluted air abatement device
US4023942A (en) * 1972-05-30 1977-05-17 Fmc Corporation Variable throat venturi scrubber
US4002441A (en) * 1975-03-21 1977-01-11 Willard Lewis Johnson Wash section for air-cleaning device
US5336284A (en) * 1993-03-29 1994-08-09 Compliance Systems International, Inc. Multiple throat, narrow gap venturi scrubber and method of using same
US5826800A (en) * 1993-09-15 1998-10-27 Reither; Karl Venturi cleaning system with two adjustable venturi grooves
US20070098314A1 (en) * 2005-11-02 2007-05-03 Lenick Louis J Bearing locking collar retainer

Also Published As

Publication number Publication date
DE1571752C3 (de) 1974-01-17
FR1454828A (fr) 1966-10-07
DE1571752A1 (de) 1971-01-14
GB1130501A (en) 1968-10-16
DE1571752B2 (de) 1973-06-20

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AS Assignment

Owner name: CONNECTICUT NATIONAL BANK THE, A NATIONAL BANKING

Free format text: SECURITY INTEREST;ASSIGNOR:ALLIS-CHALMERS CORPORATION A DE CORP.;REEL/FRAME:004149/0001

Effective date: 19830329

Owner name: WOODS KATHLEEN D., AS TRUSTEE

Free format text: SECURITY INTEREST;ASSIGNOR:ALLIS-CHALMERS CORPORATION A DE CORP.;REEL/FRAME:004149/0001

Effective date: 19830329