WO2009095008A2 - Unité de séparation de gouttes - Google Patents

Unité de séparation de gouttes Download PDF

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Publication number
WO2009095008A2
WO2009095008A2 PCT/DE2009/000139 DE2009000139W WO2009095008A2 WO 2009095008 A2 WO2009095008 A2 WO 2009095008A2 DE 2009000139 W DE2009000139 W DE 2009000139W WO 2009095008 A2 WO2009095008 A2 WO 2009095008A2
Authority
WO
WIPO (PCT)
Prior art keywords
gas flow
rod
droplet separator
unit according
separator unit
Prior art date
Application number
PCT/DE2009/000139
Other languages
German (de)
English (en)
Other versions
WO2009095008A3 (fr
Inventor
Roman Kaiser
Matthias Jansen
Roland Krauss
Helmut Kanka
Joachim Frahm
Peter Mandres
Original Assignee
Munters Euroform Gmbh
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 Munters Euroform Gmbh filed Critical Munters Euroform Gmbh
Publication of WO2009095008A2 publication Critical patent/WO2009095008A2/fr
Publication of WO2009095008A3 publication Critical patent/WO2009095008A3/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
    • B01D45/08—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
    • B01D50/40—Combinations of devices covered by groups B01D45/00 and B01D47/00

Definitions

  • the present invention relates to a droplet separator unit for separating liquid particles from a gas stream for flue gas scrubbers and the like.
  • Such rod or Rohrabscheider are known. They have a multiplicity of parallel rods and tubes arranged at equal distances from each other, through which the gas flow passes through the passage areas between the rods or tubes. Here, the liquid particles contained in the gas stream are deposited on the rods or tubes of the rod or Rohrabscheiders.
  • rod or pipe separator in combination with other droplet separators, such as lamella separators.
  • the rod or Pipe separator is usually the first droplet, which is contacted by the gas stream.
  • DE 10 2006 011 185 A1 discloses a droplet separator arrangement which has at least one droplet separator layer and a rectifier layer arranged upstream in the gas flow direction.
  • the rectifier elements of the rectifier layer are rods or tubes which are arranged with the same cross sections at equal intervals over the cross section of the gas flow channel.
  • the rectifying elements rectifying elements are arranged in the form of a V or an inverted V of opposite slope to that of the mist eliminator profiles of the mist eliminator layer. In this way, water drainage is provided and rapid contamination of the intended rectifier layer is avoided.
  • EP 1 601 442 B1 discloses a droplet separator unit for separating liquid particles from a gas stream for flue gas scrubbers and the like. Like. Facilities known which has a mist eliminator.
  • the droplet separator unit has, at a distance from the outlet side of the droplet separator behind it, a device extending over a partial section of the surface of the droplet separator for reducing the flow velocity of the gas flow at this surface section section of the droplet separator.
  • the device for reducing the flow velocity of the gas stream is preferably formed as a plurality of passage openings exhibiting sheet, in particular as a perforated plate or perforated plate.
  • the solution described above is based on the idea to bring about a homogenization of the flow velocity through the mist eliminator, that this is followed by a device which leads to a reduction in the flow velocity at the mist eliminator, namely, this device is associated with the area of the mist eliminator has an increased flow velocity compared to the remaining area of the droplet separator.
  • this device is associated with the area of the mist eliminator has an increased flow velocity compared to the remaining area of the droplet separator.
  • the increased flow rate is reduced in this region of the droplet separator and is preferably adapted to the flow velocity of the remaining droplet separator region, so that overall a relatively uniform flow velocity results over the surface of the droplet separator.
  • the additional flow resistance generated by the means for reducing the Ström ⁇ ngs beau is suitably adapted to the operating data and the geometry of the respective droplet, so that a reduction of speed peaks achieved at the mist eliminator and thus the performance of the droplet is significantly improved.
  • the above solution works satisfactorily.
  • the desired flow rate uniformity can be achieved in particular by simple retrofitting of existing devices.
  • the device for reducing the speed in the gas flow direction behind the mist eliminator ' is arranged.
  • the present invention has for its object to provide a Tropfenabscheider Ober of the specified type, with the flow rate equalization can be achieved as close as possible to the Tropfenabscheider Obers Symposium.
  • the present invention provides for configuring the droplet separator itself in such a way that an equalization of the gas flow velocity over the gas flow channel cross section is achieved.
  • This is achieved according to the invention in such a way that the gas passage areas between the individual bars / tubes of the bar / tube separator are of different sizes, specifically such that small gas passage areas are provided in the region of high flow velocity and large gas passage regions in the region of low gas flow velocity.
  • the invention provides essentially two preferred solutions: on the one hand the distances between the bars / tubes of the bar / tube separator are of different sizes and, on the other hand, the cross sections of the bars / tubes of the bar / Rohrabscheiders of different sizes. Of course, both solutions can be combined.
  • the gas flow channels described herein, such as flue gas scrubbers often have deflections that produce corresponding flow velocity peaks.
  • such gas flow channels are arranged vertically and have a deflection in the horizontal direction, which can be provided before and / or after the mist eliminator. With deflections of this type, flow velocity peaks in the interior of a deflection preferably occur.
  • the invention therefore envisages, in a special embodiment, that the gas passage areas between the bars / pipes of the bar / tube separator are small in the interior area of a deflection of the gas flow channel and large outside.
  • the gas flow channel is formed vertically, it is essentially the same in which direction the rods / tubes of the 3tab / tube separator are positioned in the cross-sectional plane of the separator. If the gas flow channel has a corresponding deflection, as described above, the longitudinal axes of the rods / tubes of the rod / tube separator are preferably arranged perpendicular to the gas flow direction in the horizontal part of the gas flow channel. In another solution, the longitudinal axes of the rods / tubes of the rod / tube separator are arranged parallel to the gas flow direction in the horizontal part of the gas flow channel.
  • the rods / tube of the rod / pipe separator may be flat, inclined, roof-shaped or V-shaped. Other embodiments are also possible. In a special embodiment, which is used in particular in an inclined, roof-shaped or V-shaped arrangement, the rods / tubes are cup-shaped and serve to drain water. The rods / tubes therefore form Wasserabloomrinnen in this case. The interior of pipes can also be used for water drainage.
  • the rod / tube separator has a plurality of rod / tube packages, each having the same gas passage areas, but different gas passage areas from one package to another. This results in Montageerleirhterept. Thus, it is not necessary to balance individual bars / tubes with regard to their spacing, but finished packages can be installed which have gas passage areas of different sizes from one package to the next. Thus, for example, a package is arranged in the interior region of a deflection, in which the gas passage areas are small, while in the outer area a package is arranged in which the gas passage areas are large.
  • the droplet separator unit formed according to the invention may have a single rod / tube separator or a plurality of rod / tube separators connected in series.
  • the droplet separator unit has an upstream rod / tube separator and at least one downstream laminated-plate precipitator.
  • the downstream droplet and the tube / Stababscheider can be formed V-shaped or roof-shaped with opposite slope to achieve an improved flushing of the separator through a purge / Bedüsungssystem provided.
  • the rod / tube separator may comprise a plurality of successively arranged rod / tube layers.
  • the multiple rod / tube layers may be formed substantially identical.
  • the rods / tubes of one layer can also be arranged offset to those of another layer. This results in no straight gas passage areas, but serpentine curved. Of course, these gas passage areas are formed by several rod / pipe layers according to the invention, d. H. different sized.
  • Droplet separator unit in addition to the features described above, at a distance from the outlet side of the unit, behind it, a means for reducing the flow velocity of the gas flow over a portion of the surface of the unit at that surface portion of the droplet separators.
  • the solution according to the invention and the solution known from the aforementioned publication are combined with one another, so that a regulation of the flow velocity of the gas stream can be carried out both in the front region of the droplet separator unit and downstream thereof.
  • gas passage regions of the downstream device for reducing the flow velocity are also preferably of different sizes and adapted to the flow velocity distribution at the droplet separator.
  • the device for reducing the flow velocity itself can also be formed as a plurality of passages exhibiting fabric or by a plurality of mutually parallel or intersecting rods, plates, tubes u. like. be formed.
  • the droplet separator unit designed according to the invention can have all the features listed in the aforementioned publication with regard to the downstream device for reducing the flow velocity.
  • the disclosure of this publication is therefore incorporated by reference into the present disclosure, without any specific reference being made to each feature.
  • the invention further relates to a flue gas scrubber having a droplet separator unit of the type described above.
  • a flue gas scrubber having a droplet separator unit of the type described above.
  • Figure 1 shows a schematic vertical section through the gas flow channel of a flue gas scrubber
  • Figure 2 is a graph showing the flow velocity distribution over the cross-section of the gas flow channel before and after the equalization
  • Figure 3 is a schematic vertical section in a rotated by 90 ° with respect to Figure 1 view of the gas flow channel of Figure 1;
  • Figure 4 is a schematic perspective view of the rod / tube separator of Figures 1 and 3;
  • FIG. 5 shows a vertical section through a tube of the rod / raw precipitator of FIG. 4 designed as a shell.
  • FIG. 1 shows, in a schematic vertical section, the gas flow channel 1 of a flue gas scrubber, which has a vertical section 10 and a lower horizontal section 11 and an upper horizontal section 12.
  • the deflection between the vertical portion 10 and the upper horizontal portion 12 is designated 8
  • the Deflection between the vertical portion 10 and the lower horizontal portion 11 is denoted by 9.
  • the gas flow direction is indicated by corresponding arrows.
  • a mist eliminator which is designed as a rod / tube separator 2.
  • the separator 2 has a plurality of tubes 7 which extend perpendicular to the image plane in FIG. Over the cross-section of the gas flow channel 1, the rod / tube separator 2 is subdivided into three regions, namely an inner region 4 (on the inner side of the deflections 8, 9), a central region 5 and an outer region 6.
  • the tubes have in the respective regions 7 with the same pipe diameter different distances from each other, so that there are different gas passage areas for each area.
  • the tubes 7 are arranged at a small distance from each other, while the distance in the central region 5 is greater. The largest is the distance in the outer region. 6
  • the gas flow channel 1 may be formed in this embodiment in horizontal section round or square or rectangular.
  • FIG. 2 shows in FIG. 2 a the flow velocity distribution over the cross section of the vertical section 10 of the gas flow channel 1. It can be seen that due to the lower deflection at 9, the flow velocity in the inner region of the vertical section 10 of the gas flow channel is greatest and decreases towards the outside , This is undesirable because one desires a uniform flow velocity distribution across the cross-section of the gas flow channel.
  • the droplet separator designed as a rod / tube separator 2 with different tube spacings, a homogenization of the flow velocity over the flow channel cross section is achieved, as shown in FIG. 2b.
  • the separator region 3 on the inside with the small tube intervals, the flow velocity peak present in this region is reduced. All three regions 4, 5 and 6 together produce the uniform flow velocity distribution shown schematically in FIG. 2b.
  • a lamellar separator 3 Downstream of the rod / tube separator 2 is a lamellar separator 3, which is flowed through the gas flow velocity uniformity over the cross section of the gas flow channel relatively uniformly, so that the second drop separator 3 (lamella separator) can operate optimally.
  • the flow conditions in the separator 3 can be influenced so that desirable optimum conditions can be achieved.
  • FIG. 3 shows a vertical section through the gas flow channel 1 of FIG. 1 in a view rotated by 90 ° with respect to FIG. It can be seen that the rod / pipe separator 2 is V-shaped, wherein the individual tubes 7 are arranged inclined and meet at the lowest point in the middle of the channel.
  • the second droplet separator 3 (lamellar separator) arranged downstream of the rod / tube separator 2 has a roof-shaped design, with entangled
  • the rinsing water of a rinsing system can therefore run outwards along the lamellae of the separator 3 and reaches the tubes 7 of the rod / tube separator 2, from where it is discharged centrally.
  • FIG. 4 shows a schematic three-dimensional view of the rod / tube separator 2 of FIGS. 1 and 3.
  • the three regions 4, 5 and 6 shown in FIG. 1 can be seen, in which the tubes 7 are arranged at different distances.
  • the individual tubes 7 are not formed in the embodiment shown in the figures as solid tubes, but as open top shells, as shown in Figure 5 in cross-section.
  • the flowing along the tubes 7 of the rod / pipe separator 2 from outside to inside water therefore runs in the shells to the center and is discharged from there via a suitable gutter system.
  • the gas flow entrains already deposited liquid particles or rinsing liquid and thus again acts on the downstream second droplet 3.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separating Particles In Gases By Inertia (AREA)
  • Gas Separation By Absorption (AREA)

Abstract

L'invention concerne une unité de séparation de gouttes destinée à séparer des particules de liquide contenues dans un flux de gaz pour des épurateurs de gaz de fumées et similaires, comportant au moins un séparateur de gouttes disposé dans un canal d'écoulement de gaz, conçu en tant que séparateur en forme de tige ou de tube. Pour uniformiser la vitesse d'écoulement de gaz sur la section transversale du canal d'écoulement de gaz, les zones de passage de gaz présentent des tailles variables entre les tiges/tubes du séparateur en forme de tige ou de tube et sont adaptées à la distribution des vitesses d'écoulement de gaz dans le canal d'écoulement de gaz.
PCT/DE2009/000139 2008-02-01 2009-01-30 Unité de séparation de gouttes WO2009095008A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008007099.8A DE102008007099B4 (de) 2008-02-01 2008-02-01 Tropfenabscheidereinheit
DE102008007099.8 2008-02-01

Publications (2)

Publication Number Publication Date
WO2009095008A2 true WO2009095008A2 (fr) 2009-08-06
WO2009095008A3 WO2009095008A3 (fr) 2009-12-03

Family

ID=40823546

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2009/000139 WO2009095008A2 (fr) 2008-02-01 2009-01-30 Unité de séparation de gouttes

Country Status (2)

Country Link
DE (1) DE102008007099B4 (fr)
WO (1) WO2009095008A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9409124B2 (en) 2012-05-22 2016-08-09 Alstom Technology Ltd Flow control grid

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015107856B4 (de) * 2015-05-19 2020-11-12 Mafac Ernst Schwarz Gmbh & Co. Kg Entfeuchtungsvorrichtung und Entfeuchtungsverfahren

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB598928A (en) * 1943-01-20 1948-03-01 Purification Ind Des Gaz Soc D Improvement in installations for the treatment of gaseous fluids containing particles in suspension
DE2236396A1 (de) * 1972-04-12 1973-10-25 Evans Dewey M Luftreinigungseinrichtung
US4695297A (en) * 1985-03-26 1987-09-22 Hein Arthur G Electrostatic precipitator
DE19703420A1 (de) * 1996-01-31 1997-08-07 Ngk Insulators Ltd Gasstromdurchgang
EP0864345A1 (fr) * 1997-03-12 1998-09-16 Munters Euroform Séparateur de gouttelettes
DE10308666A1 (de) * 2003-02-28 2004-09-09 Munters Euroform Gmbh Tropfenabscheidereinheit und hiermit versehener Rauchgaswäscher

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1772023A (en) * 1925-10-20 1930-08-05 Blaw Knox Co Fluid separator
DE19521178C2 (de) * 1995-06-10 1998-08-06 Munters Euroform Gmbh Carl Tropfenabscheideranordnung für Gaswäscher
DE19815976A1 (de) * 1998-04-09 1999-10-14 Munters Euroform Gmbh Carl Abscheideeinrichtung
DE202005002677U1 (de) * 2005-02-19 2005-04-21 Ahrens, Matthias, Dipl.-Ing. Vorrichtung zum Abscheiden von Flüssigkeitstropfen aus Gasströmen
DE102006011185A1 (de) 2006-03-10 2007-09-13 Munters Euroform Gmbh Tropfenabscheideranordnung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB598928A (en) * 1943-01-20 1948-03-01 Purification Ind Des Gaz Soc D Improvement in installations for the treatment of gaseous fluids containing particles in suspension
DE2236396A1 (de) * 1972-04-12 1973-10-25 Evans Dewey M Luftreinigungseinrichtung
US4695297A (en) * 1985-03-26 1987-09-22 Hein Arthur G Electrostatic precipitator
DE19703420A1 (de) * 1996-01-31 1997-08-07 Ngk Insulators Ltd Gasstromdurchgang
EP0864345A1 (fr) * 1997-03-12 1998-09-16 Munters Euroform Séparateur de gouttelettes
DE10308666A1 (de) * 2003-02-28 2004-09-09 Munters Euroform Gmbh Tropfenabscheidereinheit und hiermit versehener Rauchgaswäscher

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9409124B2 (en) 2012-05-22 2016-08-09 Alstom Technology Ltd Flow control grid

Also Published As

Publication number Publication date
DE102008007099A1 (de) 2009-09-24
WO2009095008A3 (fr) 2009-12-03
DE102008007099B4 (de) 2014-03-13

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