EP0925838A1 - Méthode de nettoyage d'un séparateur électrostatique et dispositif pour celui-ci - Google Patents

Méthode de nettoyage d'un séparateur électrostatique et dispositif pour celui-ci Download PDF

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Publication number
EP0925838A1
EP0925838A1 EP98123933A EP98123933A EP0925838A1 EP 0925838 A1 EP0925838 A1 EP 0925838A1 EP 98123933 A EP98123933 A EP 98123933A EP 98123933 A EP98123933 A EP 98123933A EP 0925838 A1 EP0925838 A1 EP 0925838A1
Authority
EP
European Patent Office
Prior art keywords
oil
collecting sink
collecting
disposed
static
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.)
Granted
Application number
EP98123933A
Other languages
German (de)
English (en)
Other versions
EP0925838B1 (fr
Inventor
designation of the inventor has not yet been filed The
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.)
HUANG MEI LING
Original Assignee
HUANG MEI LING
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Filing date
Publication date
Application filed by HUANG MEI LING filed Critical HUANG MEI LING
Publication of EP0925838A1 publication Critical patent/EP0925838A1/fr
Application granted granted Critical
Publication of EP0925838B1 publication Critical patent/EP0925838B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/74—Cleaning the electrodes
    • B03C3/80—Cleaning the electrodes by gas or solid particle blasting
    • 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
    • B03C3/74—Cleaning the electrodes
    • B03C3/78—Cleaning the electrodes by washing

Definitions

  • the present invention relates to a method for cleaning static precipitator and a device thereof, in which hot air and steam are used to heat and melt the oil dirt attaching to the static panels, making the oil dirt drop down into a collecting section. Accordingly, the static panels are effectively and harmlessly cleaned up.
  • the oil dirt accumulating on the static precipitator is cleared in such a manner that the static panels are detached and immerged in a detergent.
  • a detergent is sprayed onto the static panels which are then washed and flushed by clean water. After totally dried, the static panels are installed back into the oil-collecting sink of the static precipitator.
  • An improved measure has been developed, which employs a sprinkler in the oil-collecting sink to directly sprinkle a detergent and water onto the static panels and wash the same. Accordingly, it is no more necessary to detach the static panels and much labor and time are saved. However, still a great amount of waste water is produced. Moreover, it will be more difficult and time-consuming to dry the static panels in the oil-collecting sink.
  • Another improved measure has been developed to remove the oil dirt in such a manner that the static panels are circularly moved and in the moving path, a scraper is used to scrape off the oil dirt.
  • the static panels tend to deflect during moving.
  • the static panels are subject to scraping of the scraper for a long time and are likely to damage. Also, such measure has complicated structure.
  • the filtering screen serves to filter the coarse pollutant particles entrained by the air.
  • the filtering screen also serves to make the air evenly flow through the static panels to enhance the oil-cleaning effect.
  • An activated carbon filter device is installed in the rear end of the oil-collecting sink. The air flow which is free from the oil drops can further pass through the activated carbon filter device to be filtered from the odor and gas pollutant and then exhausted so as to ensure the quality of the exhausted air.
  • thermosensor of the fire device serves to detect the temperature and in the case of abnormal temperature, the thermosensor is able to activate the fire device and the sealing device at the same time to isolate the air and inject a fire-extinguishing material into the oil-collecting sink to extinguish the fire.
  • the sealing device can be a movable door. During the cleaning operation or maintenance of the static precipitator, the movable door is turned to close the air passage of the static precipitator. At this time, the air is guided and exhausted by a bypass. Therefore, the static precipitator can continuously exhaust the oil drop at the same time when maintaining the internal equipments in the oil-collecting sink without interruption of the operation of the static precipitator.
  • the oil dirt cleaning procedure of the present invention includes the following steps: In step 11 " if it is necessary to seal the oil-collecting sink ", according to the peripheral equipments and actual requirements, it is judged whether it is necessary to seal the oil-collecting sink. If so, step 12 " sealing oil-collecting sink " is performed. If no, then step 13 " filling in hot air " is performed. The hot air is filled in to heat the static panels to make the oil dirt attaching to the surfaces thereof thermally melt and separate therefrom and drop down so as to achieve a preliminary cleaning effect. Then, in step 14 " filling in steam ", steam is used to further heat and melt the oil dirt remaining on the static panels so as to achieve a further cleaning effect.
  • step 15 if it is necessary to repeat cleaning ", it is judged whether it is necessary to repeat the cleaning operation. If so, the steps 13, 14 are repeated. Otherwise, step 16 " filling in hot air to dry static panels " is performed so as to shorten the drying time. According to the above procedure, the cleaning operation of the static panels is completed. Alternatively, in the procedure, the filling of hot air and steam can be performed simultaneously to shorten cleaning time and enhance the cleaning effect.
  • Fig. 2 shows the entire structure of the present invention, which includes an oil-collecting sink 2, static panels 3, hot air filling pipe 4 and steam filling pipe 5.
  • Two ends of the oil-collecting sink 2 are respectively disposed with an air inlet 211 and an air outlet 212.
  • a middle section of the oil-collecting sink 2 is disposed with a recessed collecting section 22.
  • the bottom of the collecting section 22 is disposed with an oil draining pipe 211 communicating with outer side.
  • the static panels 3 are parallelly arranged in the oil-collecting sink 2.
  • the hot air filling pipe 4 and the steam-filling pipe 5 are disposed on one side of the oil-collecting sink 2 adjacent to the air inlet 211.
  • a fire device 6 is additionally mounted outside the oil-collecting sink 2 with a nozzle 61 extending into the oil-collecting sink 2.
  • the hot air is filled in through the hot air filling pipe 4 to heat the static panels 3 and melt the oil dirt on the surfaces thereof.
  • the molten oil dirt then gradually drops down into the collecting section 22 of the oil-collecting sink 2 and drained out from the draining pipe 221.
  • the steam is filled in through the steam-filling pipe 4 to more quickly clean up the oil dirt remaining on the static panels 3 and achieve a further cleaning effect.
  • the hot air and steam are repeatedly filled into the oil-collecting sink 2 so as to quickly and harmlessly clean up the static panels 3.
  • the hot air and steam can be simultaneously filled into the oil-collecting sink to enhance the cleaning effect.
  • thermosensor of the fire device 6 can detect the temperature to in time activate the fire device 6, making the nozzle 61 inject in fire-extinguishing material for avoiding fire.
  • Two sealing devices 23 can be disposed on two sides of the oil-collecting sink 2 adjacent to the air inlet and air outlet 211, 212.
  • the sealing devices 23 serve to seal the air inlet and outlet 211, 212 to enhance the cleaning or fire-extinguishing effect and protect other relevant equipments from being damaged and ensure safety of personnel and properties.
  • the inner side of the front end of the oil-collecting sink is disposed with a flow-guiding filtering screen 7 near the air inlet 211.
  • the filtering screen 7 serves to preliminarily filter the coarse pollutant particles in the air so as to prevent the internal static panels 3 from being contaminated such pollutant particles.
  • the filtering screen 7 also serves to even the airflow so as to even and enhance the filtering effect.
  • an activated carbon filter device 8 is installed in the rear end of the oil-collecting sink 2 near the air outlet 212. The air flow which is free from the oil drops can further pass through the activated carbon filter device 8 to be filtered from the odor and gas pollutant so as to purify the exhausted air.
  • At least one side of the oil-collecting sink 2 is formed with an openable door which can be opened for taking out or maintaining the above filtering screen 7, static panels 3, activated carbon filter device 8 and other relevant equipments disposed in the oil-collecting sink 2.
  • the sealing device 23 can be a movable door 24 which can be turned from a lateral side to inner side.
  • the outer side of the movable door 24 is disposed with a bypass 9, whereby when the movable door 24 is turned inward, the air passage of the static precipitator is just closed.
  • the bypass 9 serves as an air passage. Therefore, the static precipitator can continuously exhaust the oil drop at the same time when taking, disassembling or maintaining the internal equipments in the oil-collecting sink 2.
  • the movable door 24 is restored to its home position, permitting the oil drops to pass through the air passage in which the static panels 2, filtering screen 7 and activated carbon filter device 8 are located. Therefore, the air exhaustion operation is not interrupted to meet the requirements of actual use.

Landscapes

  • Electrostatic Separation (AREA)
  • Prevention Of Fouling (AREA)
  • Ventilation (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Separating Particles In Gases By Inertia (AREA)
  • Separation Of Particles Using Liquids (AREA)
EP98123933A 1997-12-23 1998-12-16 Méthode de nettoyage d'un séparateur statique et dispositif pour celui-ci Expired - Lifetime EP0925838B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNB971067945A CN1137001C (zh) 1997-12-23 1997-12-23 静电集油尘器油尘清除方法
CN97106794 1997-12-23

Publications (2)

Publication Number Publication Date
EP0925838A1 true EP0925838A1 (fr) 1999-06-30
EP0925838B1 EP0925838B1 (fr) 2003-04-16

Family

ID=5169004

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98123933A Expired - Lifetime EP0925838B1 (fr) 1997-12-23 1998-12-16 Méthode de nettoyage d'un séparateur statique et dispositif pour celui-ci

Country Status (10)

Country Link
EP (1) EP0925838B1 (fr)
CN (1) CN1137001C (fr)
AT (1) ATE237405T1 (fr)
BR (1) BR9806384A (fr)
CA (1) CA2256220C (fr)
DE (1) DE69813485D1 (fr)
MY (1) MY132968A (fr)
NZ (1) NZ332848A (fr)
SG (1) SG73589A1 (fr)
ZA (1) ZA9811753B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021116484A1 (fr) * 2019-12-13 2021-06-17 Société des Produits Nestlé S.A. Procédé de séchage d'une unité de filtre à fumée

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107398350B (zh) * 2017-08-02 2019-02-05 内蒙古星光煤炭集团鄂托克旗华誉煤焦化有限公司 一种烟囱排放的烟气控制处理装置
CN112628599A (zh) * 2019-10-08 2021-04-09 中国石油化工股份有限公司 天然气集输系统及其防硫堵装置
CN117443583A (zh) * 2023-12-08 2024-01-26 济南环陶环保工程有限公司 一种脱硫用湿式电除尘装置及其控制系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE461829C (de) * 1920-05-26 1928-06-26 Arnold Luyken Verfahren zum Reinigen der Abscheideelektroden elektrischer Gasreiniger
US2163489A (en) * 1936-12-08 1939-06-20 Hahn Eugene Soot blower
FR1091078A (fr) * 1952-11-14 1955-04-06 Air Preheater Dispositif pour le nettoyage, par zones, des tubes collecteurs d'un appareil de précipitation électrostatique
DE2211877A1 (de) * 1972-03-11 1973-09-20 Alfred Kaercher Kg Einrichtung zur erhoehung des abscheidegrades in elektrofiltern
JPS57147458A (en) * 1981-03-06 1982-09-11 Hitachi Ltd Filter type dust collector

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE461829C (de) * 1920-05-26 1928-06-26 Arnold Luyken Verfahren zum Reinigen der Abscheideelektroden elektrischer Gasreiniger
US2163489A (en) * 1936-12-08 1939-06-20 Hahn Eugene Soot blower
FR1091078A (fr) * 1952-11-14 1955-04-06 Air Preheater Dispositif pour le nettoyage, par zones, des tubes collecteurs d'un appareil de précipitation électrostatique
DE2211877A1 (de) * 1972-03-11 1973-09-20 Alfred Kaercher Kg Einrichtung zur erhoehung des abscheidegrades in elektrofiltern
JPS57147458A (en) * 1981-03-06 1982-09-11 Hitachi Ltd Filter type dust collector

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 006, no. 250 (C - 139) 9 December 1982 (1982-12-09) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021116484A1 (fr) * 2019-12-13 2021-06-17 Société des Produits Nestlé S.A. Procédé de séchage d'une unité de filtre à fumée

Also Published As

Publication number Publication date
MY132968A (en) 2007-10-31
DE69813485D1 (de) 2003-05-22
SG73589A1 (en) 2000-06-20
CN1137001C (zh) 2004-02-04
CA2256220C (fr) 2002-08-13
CN1220918A (zh) 1999-06-30
NZ332848A (en) 1999-03-29
CA2256220A1 (fr) 1999-06-23
ATE237405T1 (de) 2003-05-15
ZA9811753B (en) 1999-06-28
EP0925838B1 (fr) 2003-04-16
BR9806384A (pt) 1999-12-21

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