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 PDFInfo
- 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- Withdrawn
Links
- 239000002245 particle Substances 0.000 title claims abstract description 32
- 238000000926 separation method Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000007600 charging Methods 0.000 title description 10
- 239000007789 gas Substances 0.000 claims abstract description 10
- 230000008021 deposition Effects 0.000 claims description 30
- 238000000151 deposition Methods 0.000 claims description 28
- 239000007921 spray Substances 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 238000007786 electrostatic charging Methods 0.000 claims description 3
- 238000004924 electrostatic deposition Methods 0.000 claims description 3
- 239000002440 industrial waste Substances 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract 1
- 239000012717 electrostatic precipitator Substances 0.000 description 16
- 238000010586 diagram Methods 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 230000005684 electric field Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005108 dry cleaning Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
-
- 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 or 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.
Landscapes
- Electrostatic Separation (AREA)
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 |
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 |
PCT/EP2006/000106 WO2006074888A1 (fr) | 2005-01-11 | 2006-01-09 | Procede et dispositif pour charger electrostatiquement et separer des particules difficiles a separer |
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 |
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 |
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8625253B2 (en) * | 2007-01-25 | 2014-01-07 | Goudy Research, Llc | Fluid cooled electrical capacitor and methods of making and using |
WO2010048223A2 (fr) * | 2008-10-20 | 2010-04-29 | Carrier Corporation | Système de filtration de l'air électriquement renforcé par une charge des fibres par l'arrière |
KR101610854B1 (ko) * | 2008-12-11 | 2016-04-21 | 삼성전자 주식회사 | 전기집진장치 및 그 고전압 전극 |
US9089849B2 (en) * | 2010-10-29 | 2015-07-28 | Nanjing Normal University | Single-region-board type high-temperature electrostatic dust collector |
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 |
US10399091B2 (en) | 2016-01-08 | 2019-09-03 | Korea Institute Of Machinery & Materials | Electrostatic precipitation device for removing particles in explosive gases |
KR101973018B1 (ko) * | 2016-11-29 | 2019-04-26 | 한국기계연구원 | 폭발성 배기가스 입자의 정전 제거 장치 |
Citations (3)
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 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
DE3888785T2 (de) * | 1987-05-21 | 1994-11-24 | Matsushita Electric Ind Co Ltd | Staubsammelelektrode. |
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 |
-
2005
- 2005-01-11 EP EP05000380A patent/EP1679123A1/fr not_active Withdrawn
-
2006
- 2006-01-09 US US11/794,960 patent/US8002876B2/en not_active Expired - Fee Related
- 2006-01-09 CN CNA2006800078495A patent/CN101137442A/zh active Pending
- 2006-01-09 WO PCT/EP2006/000106 patent/WO2006074888A1/fr active Application Filing
- 2006-01-09 JP JP2007550738A patent/JP2008526499A/ja active Pending
- 2006-01-09 KR KR1020077018468A patent/KR101238619B1/ko active IP Right Grant
-
2007
- 2007-07-25 ZA ZA200706171A patent/ZA200706171B/en unknown
Patent Citations (3)
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)
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 |
---|---|
JP2008526499A (ja) | 2008-07-24 |
CN101137442A (zh) | 2008-03-05 |
WO2006074888A1 (fr) | 2006-07-20 |
US20090165648A1 (en) | 2009-07-02 |
US8002876B2 (en) | 2011-08-23 |
KR20070095405A (ko) | 2007-09-28 |
KR101238619B1 (ko) | 2013-02-28 |
ZA200706171B (en) | 2008-04-30 |
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Effective date: 20120814 |