EP1679123A1 - Procédé et appareil pour le chargement électrique et la séparation de particules difficilement remouvables - Google Patents

Procédé et appareil pour le chargement électrique et la séparation de particules difficilement remouvables Download PDF

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Publication number
EP1679123A1
EP1679123A1 EP05000380A EP05000380A EP1679123A1 EP 1679123 A1 EP1679123 A1 EP 1679123A1 EP 05000380 A EP05000380 A EP 05000380A EP 05000380 A EP05000380 A EP 05000380A EP 1679123 A1 EP1679123 A1 EP 1679123A1
Authority
EP
European Patent Office
Prior art keywords
ionization
deposition
particles
high voltage
region
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Withdrawn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
EP05000380A
Other languages
German (de)
English (en)
Inventor
Werner Jakob Frank
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.)
Balcke Duerr GmbH
Original Assignee
Balcke Duerr 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 Balcke Duerr GmbH filed Critical Balcke Duerr GmbH
Priority to EP05000380A priority Critical patent/EP1679123A1/fr
Priority to US11/794,960 priority patent/US8002876B2/en
Priority to KR1020077018468A priority patent/KR101238619B1/ko
Priority to CNA2006800078495A priority patent/CN101137442A/zh
Priority to JP2007550738A priority patent/JP2008526499A/ja
Priority to PCT/EP2006/000106 priority patent/WO2006074888A1/fr
Publication of EP1679123A1 publication Critical patent/EP1679123A1/fr
Priority to ZA200706171A priority patent/ZA200706171B/en
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02—Plant or installations having external electricity supply
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/45—Collecting-electrodes
    • B03C3/455—Collecting-electrodes specially adapted for heat exchange with the gas stream
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02—Plant or installations having external electricity supply
    • B03C3/025—Combinations of electrostatic separators, e.g. in parallel or in series, stacked separators, dry-wet separator combinations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/45—Collecting-electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/45—Collecting-electrodes
    • B03C3/51—Catch- space electrodes, e.g. slotted-box form

Definitions

  • the invention relates to a method and apparatus for electrostatic charging and deposition of difficult to be separated particles of a gas fluid according to the preambles of independent claims 1 and 5. It is in other words an electrostatic precipitator and an electrostatic precipitator.
  • the reason that some particles are difficult to separate may be due to the electrical properties of the particles, which due to their chemical-physical nature at the collecting electrodes result in an insulating layer.
  • the physically effective charging mechanisms namely the so-called shock or field charging and the diffusion charging, a more or less pronounced minimum of the particle fraction separation efficiency occurs.
  • the Applicant has already developed electrostatic precipitators for dedusting industrial waste gases which operate with a negative spray system.
  • it has proposed a method in which particles which are difficult to deposit are removed from a gas fluid with the aid of electrostatic charging and deposition by means of only one high voltage source for a high voltage zone, wherein the particles within the high voltage zone successively and not simultaneously, in contrast to the so-called Cottrell electrostatic precipitators be ionized and separated.
  • a larger geometric gap is set than in the deposition region, as a result of which the field strength of the ionization region is smaller than the field strength of the deposition region.
  • Air filters and industrial filters are not comparable because air filters must meet completely different requirements than the large industrial electrostatic precipitators involved, and therefore they can not be used to clean industrial gases.
  • Air filters are also known, each working with a positive spray system and two high voltages. These air filters have a rectifier with two outputs for ionization and separation.
  • the field strengths in the known air filters are the same in the ionization and deposition area, but provided with different voltage potentials. Both areas must be carried out electrically isolated from each other.
  • positive discharge electrodes are provided, which cause a moderate ionization.
  • the invention has the object to avoid the disadvantages of the above-described electrostatic precipitator and electrostatic precipitator method and to reduce the energy consumption in the filtering of industrial emissions.
  • the separator according to the invention and the deposition method according to the invention thus work with a negative spray system in which a just sufficient charge of the particles is carried out with the aid of only one high-voltage source in each high-voltage zone. Accordingly, the transport of the charged particles and their deposition takes place with the least additional energy expenditure on the oppositely poled precipitation electrodes, the individual passages known from the conventional filters having a negative spray system being left unchanged.
  • the efficient and as complete as possible charging of the particles is carried out at an applied high voltage in the ionization region, which in turn generates a field strength in the subsequent deposition area with the lowest current flow, which is sufficient for transport and deposition of the particles.
  • multiple ionization and deposition sections within an electrostatic filter field may be sequentially arranged if the single particle charge is insufficient.
  • Fig. 1 shows the particle separation behavior in an electrostatic precipitator.
  • FIG. 2 shows how far the individual characteristics of the negative electrode geometries in question must differ so that the objective according to the invention can occur.
  • the characteristics in the left-hand part of the diagram correspond to the strongly current-collecting electrode forms (A, B and C type) for the ionization region, while the characteristics shown in the right-hand part of the diagram correspond to the current-poor electrode shapes (D, E and F type) for the deposition region correspond.
  • Fig. 3 shows the overview of a single Abscheidegasse with the working sections ionizing and deposition. Neighboring analogue streets are not shown.
  • a high voltage power source 1 a high voltage system 2 is connected, which is provided with power-intensive discharge electrodes 6 and voltage-intensive or low-current negative electrodes 7.
  • the spray electrodes 6 are located in an ionization region 4, which is formed by the grounded collecting electrodes 3.
  • the negative electrodes 7 are located in a deposition region 5, which is likewise formed by the precipitation electrodes 3. 11 marks the entire high-voltage zone.
  • ionization region 4 also referred to as ionization region, there is sufficient charge of the particles achieved, which are then optimally deposited in the following separation area 5 with greatly reduced turbulence or almost missing electrical wind.
  • a further ionization region 4a can be connected downstream of the ionization region 4 and the deposition region 5 with a deposition region 5a according to FIG.
  • Fig. 5 shows a schematic representation of a horizontally arranged electrostatic precipitator, a so-called horizontal field.
  • a plurality of rows of collecting electrodes 3 are provided within a filter housing 8 with the ground 12, which form several Abscheidegassen 13, which in turn have a lonisations Suite4 with the power-intensive discharge electrodes 6 and a deposition area with low-current negative electrodes 7.
  • the embodiment shown here has two Abscheidegassen 13, but more Abscheidegassen 13 can follow, as indicated by the dashed lines 14.
  • FIG. 6 shows a further exemplary embodiment of the electrostatic precipitator according to the invention, wherein two ionization regions 4 or 4a and two deposition regions 5 and 5a are arranged within the three separation trays 13 shown. Moreover, the negative electrodes 7 having an elliptic shape shown in Fig. 6 have another candidate geometry.
  • FIG. 7 shows a third exemplary embodiment with an ionization region 4 in which the precipitation electrodes 9 which are earthed with 12 are designed as hollow bodies (cooling chamber 10) through which a coolant 9 flows.
  • a back ionization also referred to as back-spraying, due to an extreme electrical resistance of deposited particles in the ionization region 4 is avoided.

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  • Electrostatic Separation (AREA)
EP05000380A 2005-01-11 2005-01-11 Procédé et appareil pour le chargement électrique et la séparation de particules difficilement remouvables Withdrawn EP1679123A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP05000380A EP1679123A1 (fr) 2005-01-11 2005-01-11 Procédé et appareil pour le chargement électrique et la séparation de particules difficilement remouvables
US11/794,960 US8002876B2 (en) 2005-01-11 2006-01-09 Method and apparatus for electrostatically charging and separating particles that are difficult to separate
KR1020077018468A KR101238619B1 (ko) 2005-01-11 2006-01-09 분리되기 어려운 파티클을 정전기적으로 하전하여 분리하는방법 및 장치
CNA2006800078495A CN101137442A (zh) 2005-01-11 2006-01-09 用于静电充电和分离难以分离的颗粒的方法和装置
JP2007550738A JP2008526499A (ja) 2005-01-11 2006-01-09 分離困難な粒子を静電的に帯電させて分離する方法および装置
PCT/EP2006/000106 WO2006074888A1 (fr) 2005-01-11 2006-01-09 Procede et dispositif pour charger electrostatiquement et separer des particules difficiles a separer
ZA200706171A ZA200706171B (en) 2005-01-11 2007-07-25 Method and device for electrostatically charging and separating particles that are difficult to separate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05000380A EP1679123A1 (fr) 2005-01-11 2005-01-11 Procédé et appareil pour le chargement électrique et la séparation de particules difficilement remouvables

Publications (1)

Publication Number Publication Date
EP1679123A1 true EP1679123A1 (fr) 2006-07-12

Family

ID=34933241

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05000380A Withdrawn EP1679123A1 (fr) 2005-01-11 2005-01-11 Procédé et appareil pour le chargement électrique et la séparation de particules difficilement remouvables

Country Status (7)

Country Link
US (1) US8002876B2 (fr)
EP (1) EP1679123A1 (fr)
JP (1) JP2008526499A (fr)
KR (1) KR101238619B1 (fr)
CN (1) CN101137442A (fr)
WO (1) WO2006074888A1 (fr)
ZA (1) ZA200706171B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210331006A1 (en) * 2020-04-22 2021-10-28 Mukundakumar Rajukumar Head-mounted Air Purifier

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008092073A2 (fr) * 2007-01-25 2008-07-31 Ion A-Z, Llc Condensateur refroidi par fluide et procédés de fabrication et d'utilisation
US8961659B2 (en) * 2008-10-20 2015-02-24 Carrier Corporation Electrically enhanced air filtration system using rear fiber charging
KR101610854B1 (ko) * 2008-12-11 2016-04-21 삼성전자 주식회사 전기집진장치 및 그 고전압 전극
WO2012055110A1 (fr) * 2010-10-29 2012-05-03 南京师范大学 Dépoussiéreur électrostatique à haute température de type à panneaux et à une seule zone
US20120192713A1 (en) * 2011-01-31 2012-08-02 Bruce Edward Scherer Electrostatic Precipitator Charging Enhancement
US9682384B2 (en) * 2014-09-11 2017-06-20 University Of Washington Electrostatic precipitator
US9595884B2 (en) 2014-12-18 2017-03-14 General Electric Company Sub-sea power supply and method of use
KR101973018B1 (ko) * 2016-11-29 2019-04-26 한국기계연구원 폭발성 배기가스 입자의 정전 제거 장치
US10399091B2 (en) 2016-01-08 2019-09-03 Korea Institute Of Machinery & Materials Electrostatic precipitation device for removing particles in explosive gases

Citations (3)

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Publication number Priority date Publication date Assignee Title
US1343285A (en) * 1913-03-05 1920-06-15 Int Precipitation Co Means for separating suspended matter from gases
US4264343A (en) * 1979-05-18 1981-04-28 Monsanto Company Electrostatic particle collecting apparatus
US6004376A (en) * 1996-12-06 1999-12-21 Apparatebau Rothemuhle Brandt & Kritzler Gmbh Method for the electrical charging and separation of particles that are difficult to separate from a gas flow

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US3518462A (en) * 1967-08-21 1970-06-30 Guidance Technology Inc Fluid flow control system
US3907520A (en) * 1972-05-01 1975-09-23 A Ben Huang Electrostatic precipitating method
JPS5929302B2 (ja) * 1976-07-05 1984-07-19 メタルゲゼルシヤフト・アクチエンゲゼルシヤフト 高抵抗ダスト集塵方法
DK141541B (da) * 1977-08-04 1980-04-14 Niels Brundbjerg Luftrenser af regenerationstypen omfattende en ozonlampe.
US4225323A (en) * 1979-05-31 1980-09-30 General Electric Company Ionization effected removal of alkali composition from a hot gas
WO1988009213A1 (fr) * 1987-05-21 1988-12-01 Matsushita Electric Industrial Co., Ltd. Electrode collectrice de poussiere
JP3155775B2 (ja) * 1991-07-19 2001-04-16 東芝キヤリア株式会社 電気集塵機
US5302190A (en) * 1992-06-08 1994-04-12 Trion, Inc. Electrostatic air cleaner with negative polarity power and method of using same
US6524369B1 (en) * 2001-09-10 2003-02-25 Henry V. Krigmont Multi-stage particulate matter collector

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1343285A (en) * 1913-03-05 1920-06-15 Int Precipitation Co Means for separating suspended matter from gases
US4264343A (en) * 1979-05-18 1981-04-28 Monsanto Company Electrostatic particle collecting apparatus
US6004376A (en) * 1996-12-06 1999-12-21 Apparatebau Rothemuhle Brandt & Kritzler Gmbh Method for the electrical charging and separation of particles that are difficult to separate from a gas flow

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210331006A1 (en) * 2020-04-22 2021-10-28 Mukundakumar Rajukumar Head-mounted Air Purifier

Also Published As

Publication number Publication date
US8002876B2 (en) 2011-08-23
JP2008526499A (ja) 2008-07-24
KR20070095405A (ko) 2007-09-28
KR101238619B1 (ko) 2013-02-28
WO2006074888A1 (fr) 2006-07-20
CN101137442A (zh) 2008-03-05
US20090165648A1 (en) 2009-07-02
ZA200706171B (en) 2008-04-30

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