EP2637762A1 - Dispositif d'épuration d'effluents gazeux - Google Patents

Dispositif d'épuration d'effluents gazeux

Info

Publication number
EP2637762A1
EP2637762A1 EP11790725.3A EP11790725A EP2637762A1 EP 2637762 A1 EP2637762 A1 EP 2637762A1 EP 11790725 A EP11790725 A EP 11790725A EP 2637762 A1 EP2637762 A1 EP 2637762A1
Authority
EP
European Patent Office
Prior art keywords
exhaust air
liquid
collecting surface
porous structure
flow channel
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.)
Withdrawn
Application number
EP11790725.3A
Other languages
German (de)
English (en)
Inventor
Thomas Pollmeier
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.)
Big Dutchman International GmbH
Original Assignee
Big Dutchman International 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 Big Dutchman International GmbH filed Critical Big Dutchman International GmbH
Publication of EP2637762A1 publication Critical patent/EP2637762A1/fr
Withdrawn legal-status Critical Current

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
    • B01D45/10—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators which are wetted
    • 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
    • B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
    • 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
    • B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
    • B01D47/028—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath by directing the gas through a wetted wire mesh or a perforated plate
    • 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
    • B01D47/06—Spray cleaning
    • 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

Definitions

  • the present invention relates to a device for cleaning exhaust air with a flow channel through which an exhaust air stream to be cleaned can be passed, a liquid spray device arranged in the flow channel, with which a liquid can be sprayed into the exhaust air stream, a particle separator with an obliquely arranged collection surface for catching the liquid dropping as drops and / or aerosols from the exhaust air stream and a liquid removal device associated with the collecting surface.
  • an exhaust air scrubber which serves to purify exhaust air from stable installations before they are discharged to the outside air.
  • a copesstechniksssprühvorraum is arranged with nozzles that spray a liquid in the exhaust air flow during operation of the exhaust air scrubber.
  • the spray drops and aerosols mix and combine with the gases, liquids or solids that are carried in the exhaust air stream.
  • the drops and aerosols then tend to precipitate out of the exhaust air stream.
  • the failure tendency can be assisted by liquid mist separators arranged downstream of the liquid spraying device, from which the liquid collected there drips off.
  • a particle separator is arranged in the known exhaust air scrubber.
  • the particle separator has
  • CONFIRMATION COPY via a spiral-shaped coiled sheet metal as an inclined collecting surface for catching drops and aerosols, on which the drops and aerosols initially impinge and then, following the gravitational force, run down over the surface of the coiled sheet.
  • the oblique arrangement of the collecting surface thus serves the purpose of ensuring the drainage of the collected drops.
  • a remplisstechniksab 2010vorraum At the lower end of the collecting surface is a sosstiksab 2010voriques, with which the liquid collected by the collecting surface can be collected and removed from the scrubber and fed to a treatment.
  • the collecting surface is designed as a helical spiral droplet separator with a flat impact surface, but it is also possible to design the collecting surface as a plastic or metal grid or as a cyclone. It is important that on the one hand sufficient surfaces are available on which the drops or aerosols can impinge, on the other hand, but also to design the collection surface so that enough exhaust air can flow through the flow channel.
  • the object is achieved for a generic device by the surface of the collecting surface is wholly or partially provided with a material having a porous structure.
  • the solution of the problem is based on the finding that, depending on how large and heavy the drops are and on which impact the droplets have, the droplets of the collecting surface without the inventive design does not necessarily adhere completely to their first contact, but burst and splashing can form new droplets that detach from the collection surface and move, following gravity, to the bottom of the particle separator. If the particle separator is too short, or if a renewed contact of the smaller droplets with the collecting surface remains due to the flow conditions in the particle separator, these droplets are not detected by the liquid discharge device. Due to the inventive design of the collecting surface, the tendency to spatter is reduced.
  • a material having a porous structure is meant a closed-pored or open-pored material having a number of cavities distributed over its cross-section.
  • the cavities may at least partially communicate with each other and with the environment.
  • drops or aerosols meet the porous structures, they no longer bounce off the smooth surface from the smooth surface into the exhaust air stream, but they initially spread on and / or in the cavities of the porous structure. This reduces spattering.
  • the liquid forming the impacting droplet can be pressed into adjacent cavities by the impact energy. The impact energy will be at least partially degraded, and the impinging liquid is divided into subsets, which can be absorbed by the cavities.
  • the material with the porous structure is elastic.
  • the term "elastic” as used herein means that the material is designed to already deform due to the energy contained in the impacting droplets, thereby absorbing some of the kinetic energy contained in a droplet and thereby mitigating the hardness of the impact of a droplet .
  • an elastomeric plastic material is particularly suitable here.
  • Particularly advantageous is a material whose compressive strength at 40% compression in a range of 1.5 - 10 kPa is (DIN EN ISO 3386-1) Due to the elasticity of the material, the impact of a drop is additionally attenuated, the tendency to spill of the impinging drop additionally reduced.
  • assembly is also simplified since elastic material can also be adapted very well to uneven surfaces. sen, as it is required, for example, in trained as worm collecting surfaces.
  • the material with the porous structure is applied as a mat on the collecting surface.
  • the mat material makes installation easy, the mat only has to be cut to the desired shape and can then be connected to the collecting surface, for example by means of an adhesive bond that can be produced quickly and inexpensively.
  • cavities in the porous material have a pore count of 7 to 14 pores per inch. This pore size results in a particularly good absorption of the drops and aerosols by the porous material.
  • the material with the porous structure has a thickness of 5 mm to 10 mm. Due to this thickness, the available space is only slightly claimed for the porous material, but the thickness is already enough to initiate impinging drops in the cavities and zuzu meetings the accumulating in the cavities liquid of remplisstechniksab technologicalvorraum.
  • the material with the porous structure is formed as a foam structure.
  • the cavities are limited by very thin membrane-like walls, whereby the void content of the space occupied by the material is very high.
  • the material with the porous structure is made of a plastic.
  • the collecting surface in the flow channel in the flow direction of the exhaust air stream is arranged in front of the liquid sprayer.
  • a device 2 for cleaning exhaust air is shown.
  • the device 2 has a flow channel 4 through which an exhaust air stream 6 flows in the direction of flow.
  • a diesstechniksssprühvorraum 8 with which a liquid can be sprayed into the exhaust air stream 6.
  • the flow channel 4 takes in the embodiment, a substantially vertical profile, wherein the exhaust air stream 6 flows through the flow channel 4 from bottom to top.
  • the drops of the liquid sprayed by the diesstiksssprühvorraum 8 are not necessarily entrained in the flow direction of the exhaust air stream 4, but the drops fall downwards, following gravity, upstream of the flow direction of the exhaust air stream 4. They thus reach the area of the particle separator 10.
  • the particle separator 10 can also be arranged downstream of the liquid spraying device 8, which makes sense in particular for larger flow velocities of the exhaust air stream 6 when the droplets of the discharged liquid are entrained by the exhaust air stream 6.
  • the collecting surface 12 can be seen, with which in the exemplary embodiment at least approximately covers the entire cross-section of the flow channel 4 over a portion thereof. Due to the helical design of the collecting surface 12, the exhaust air flow must indeed take a helical course in order to be able to flow past the collecting surface 12, but the passage is possible in any case.
  • the coiled collecting surface 12 leaves no part of the cross section of the flow channel 4, through which the drops could pass through the portion of the Péroabscheiders 10 without contact with the collecting surface 12. This ensures that the drops of the liquid in each case must come into contact with the collecting surface 12.
  • the helix is in the embodiment but only as long as it is necessary to cover the cross section of the flow channel 4. As a result, the pressure losses and the structural complexity are reduced to an absolutely necessary level.
  • the collecting surface 12 In the exemplary embodiment, only a single coil is shown as the collecting surface 12, but deviating from but also several coils or other pitches and / or shapes of the collecting surface 12 may be provided.
  • a material 14 is indicated with a porous structure.
  • the material 14 covers only a partial surface of the surface of the collecting surface 12, but in deviation from the exemplary embodiment, the material 14 may also cover the entire surface.
  • a mat made of a porous material 14 is placed on a plate coil and connected thereto, but it is also possible, the webs of the helix directly from a porous material, preferably an elastic plastic, or produce different materials, one of which is a porous Has structure to connect by means of a coextrusion to a component.
  • the porous structure material 14 Since the collecting surface 12 is coiled down, the droplets that have hit the material 14 and penetrated into the cavities therein can, according to gravity, run downwards until they reach the liquid discharge device 16 and are discharged from the flow channel 4 .
  • the liquid discharge device 16 consists of a channel which extends transversely across the width of the flow channel 4 below the collecting surface 12.
  • the invention is not limited to the embodiment described above. It is not difficult for a person skilled in the art to modify the invention in a manner which appears to be suitable using his specialist knowledge and to adapt it to a specific task, without this thereby avoiding the use of the object of the invention.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Of Particles Using Liquids (AREA)
  • Treating Waste Gases (AREA)
  • Gas Separation By Absorption (AREA)

Abstract

La présente invention concerne un dispositif (2) d'épuration d'effluents gazeux, muni d'un canal d'écoulement (4), à travers duquel un flux d'effluents gazeux (6) à épurer peut être guidé, d'un dispositif de pulvérisation (8) de liquide disposé dans le canal d'écoulement (4), qui permet de pulvériser un liquide dans le flux d'effluents gazeux (6), d'un séparateur de particules (10) présentant une surface de réception (12) disposée en biais, destinée à recevoir le liquide se séparant sous forme de gouttes et/ou d'aérosol du flux d'effluents gazeux (6) et d'un dispositif d'évacuation du liquide (8) associé à la surface de réception (12). Afin d'améliorer le dispositif déjà connu pour l'épuration des effluents gazeux en ce qu'il présente une tendance inférieure à évacuer de l'eau vers le bas du dispositif, selon l'invention, la surface de réception (12) est revêtue en surface, totalement ou partiellement, d'un matériau (14) doté d'une structure poreuse.
EP11790725.3A 2010-11-11 2011-11-09 Dispositif d'épuration d'effluents gazeux Withdrawn EP2637762A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202010015267U DE202010015267U1 (de) 2010-11-11 2010-11-11 Vorrichtung zur Reinigung von Abluft
PCT/EP2011/005632 WO2012062465A1 (fr) 2010-11-11 2011-11-09 Dispositif d'épuration d'effluents gazeux

Publications (1)

Publication Number Publication Date
EP2637762A1 true EP2637762A1 (fr) 2013-09-18

Family

ID=43706007

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11790725.3A Withdrawn EP2637762A1 (fr) 2010-11-11 2011-11-09 Dispositif d'épuration d'effluents gazeux

Country Status (6)

Country Link
EP (1) EP2637762A1 (fr)
JP (1) JP2014500790A (fr)
KR (1) KR20130110188A (fr)
CN (1) CN103328070A (fr)
DE (1) DE202010015267U1 (fr)
WO (1) WO2012062465A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103566720B (zh) * 2012-07-20 2015-06-10 中国石油化工股份有限公司 一种氨法烟气脱硫装置
CN104083977B (zh) * 2014-07-01 2016-06-15 安徽清溪环保科技有限公司 一种环保节能喷淋除尘降解设备
CN110318849A (zh) * 2019-06-21 2019-10-11 东莞理工学院城市学院 一种螺旋管内喷水式吸附柴油机尾气的颗粒分离器
EP4066920A4 (fr) * 2020-07-21 2023-05-31 Fuji Electric Co., Ltd. Dispositif de traitement de gaz d'échappement

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3522692A (en) * 1968-01-23 1970-08-04 Dustex Corp Gas scrubber
DE202004017287U1 (de) * 2004-11-05 2005-01-20 Big Dutchman International Gmbh Vorrichtung zum Behandeln wenigstens eines durch einen Strömungskanal geführten gasförmigen Mediums

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3444670A (en) * 1965-06-21 1969-05-20 Ernest C Hungate Apparatus for treating gas
WO2003011429A1 (fr) * 2001-07-27 2003-02-13 Arben Vrapi Filtrage des fumees industrielles
JP2008168262A (ja) * 2007-01-15 2008-07-24 Anemosu:Kk 気液接触装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3522692A (en) * 1968-01-23 1970-08-04 Dustex Corp Gas scrubber
DE202004017287U1 (de) * 2004-11-05 2005-01-20 Big Dutchman International Gmbh Vorrichtung zum Behandeln wenigstens eines durch einen Strömungskanal geführten gasförmigen Mediums

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2012062465A1 *

Also Published As

Publication number Publication date
JP2014500790A (ja) 2014-01-16
DE202010015267U1 (de) 2011-03-03
CN103328070A (zh) 2013-09-25
WO2012062465A1 (fr) 2012-05-18
KR20130110188A (ko) 2013-10-08

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