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GB1183432A - Improvements in and relating to Electric Precipitators and the Removal of Particle Accumulations therefrom - Google Patents

Improvements in and relating to Electric Precipitators and the Removal of Particle Accumulations therefrom

Info

Publication number
GB1183432A
GB1183432A GB05774/68A GB1577468A GB1183432A GB 1183432 A GB1183432 A GB 1183432A GB 05774/68 A GB05774/68 A GB 05774/68A GB 1577468 A GB1577468 A GB 1577468A GB 1183432 A GB1183432 A GB 1183432A
Authority
GB
United Kingdom
Prior art keywords
precipitator
intensity
emitter
vibration
windings
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.)
Expired
Application number
GB05774/68A
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.)
Gold Fields Mining & Ind Ltd
Original Assignee
Gold Fields Mining & Ind Ltd
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 Gold Fields Mining & Ind Ltd filed Critical Gold Fields Mining & Ind Ltd
Publication of GB1183432A publication Critical patent/GB1183432A/en
Expired legal-status Critical Current

Links

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
    • B03C3/76—Cleaning the electrodes by using a mechanical vibrator, e.g. rapping gear ; by using impact
    • B03C3/763—Electricity supply or control systems therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Electrostatic Separation (AREA)

Abstract

1,183,432. Control systems for electrostatic precipitators. GOLD FIELDS MINING & INDUSTRIAL Ltd. 2 April, 1968 [2 May, 1967], No. 15774/68. Heading H2H. In order to maintain the operation of an electrostatic precipitator in an optimum condition the electrodes thereof are periodically vibrated to remove the accumulations of particles thereon, the intensity of vibration being made responsive to the power input to the precipitator. An electrostatic precipitator 14, provided with emitter and collector electrodes 16, 18 respectively, is supplied from an A.C. supply 10 by way of a transformerrectifier unit 12. To remove the particles, the emitter and collector are provided with vibrators 20, 24 respectively, the operations of which are controlled by thyristor devices 60E, 60C, each of which is energized from power sources 58E, 58C for predetermined time intervals by means of timers 62E, 62C. A signal representing the input power to the precipitator is derived by means of a current transformer 32, rectified and filtered by units 34. 36 respectively. The signal thus obtained is amplified by amplifiers 40E, 40C, and provides energization for windings 52E, 52C of magnetic amplifiers 50E, 50C, these amplifiers further being provided with bias windings 54E, 54C. The outputs of the magnetic amplifiers are used to gate the thyristor devices and so control the intensity of vibration of the emitter and collector electrodes. The windings 52E and 54E are arranged to oppose one another whilst the windings 52C and 54C assist each other. Thus the intensity of vibration of the emitter is inversely proportional to the input power to the precipitator whilst that of the collector is directly proportional thereto. The control systems are each provided with limit and gain controls whereby to limit the intensity of vibration of the electrodes and to control the rate of change of such intensity with given changes in input power to the precipitator.
GB05774/68A 1967-05-02 1968-04-02 Improvements in and relating to Electric Precipitators and the Removal of Particle Accumulations therefrom Expired GB1183432A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US63560167A 1967-05-02 1967-05-02

Publications (1)

Publication Number Publication Date
GB1183432A true GB1183432A (en) 1970-03-04

Family

ID=24548425

Family Applications (1)

Application Number Title Priority Date Filing Date
GB05774/68A Expired GB1183432A (en) 1967-05-02 1968-04-02 Improvements in and relating to Electric Precipitators and the Removal of Particle Accumulations therefrom

Country Status (2)

Country Link
US (1) US3469371A (en)
GB (1) GB1183432A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3837439A1 (en) * 1988-11-04 1990-05-10 Sms Schwingungs Messung System Process and apparatus for loosening dust and dirt particles in filter units

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3599399A (en) * 1968-03-08 1971-08-17 Thomas J Gallen Apparatus for filtering pollutants
US3653185A (en) * 1968-10-08 1972-04-04 Resource Control Airborne contaminant removal by electro-photoionization
US3893828A (en) * 1973-06-11 1975-07-08 Wahlco Inc Electrostatic precipitator central monitor and control system
US4008057A (en) * 1974-11-25 1977-02-15 Envirotech Corporation Electrostatic precipitator electrode cleaning system
US4111669A (en) * 1975-01-28 1978-09-05 Koppers Company, Inc. Magnetic impulse rapper control system
IN158842B (en) * 1981-11-13 1987-01-31 Blue Circle Ind Plc
DE3326040A1 (en) * 1983-07-20 1985-01-31 Siemens AG, 1000 Berlin und 8000 München METHOD FOR OPERATINGLY DETERMINING THE PRESENCE OF A KNOCKING CLOCK OPTIMUM FOR THE ELECTRODE KNOCKING OF AN ELECTROFILTER
SE506423C2 (en) * 1996-05-09 1997-12-15 Flaekt Ab Method for controlling the length of the stroke intervals and other stroke parameters at an electrostatic dust separator
US20050210902A1 (en) * 2004-02-18 2005-09-29 Sharper Image Corporation Electro-kinetic air transporter and/or conditioner devices with features for cleaning emitter electrodes
US6540812B2 (en) * 2001-07-06 2003-04-01 Bha Group Holdings, Inc. Method and system for improved rapper control
US7357828B2 (en) * 2006-07-17 2008-04-15 Oreck Holdings Llc Air cleaner including constant current power supply
US7625424B2 (en) * 2006-08-08 2009-12-01 Oreck Holdings, Llc Air cleaner and shut-down method

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA591169A (en) * 1960-01-19 Guldemond John Variable frequency vibration system for electrical precipitators
US2925142A (en) * 1953-12-07 1960-02-16 Koppers Co Inc Electrical precipitator
US3039252A (en) * 1956-01-12 1962-06-19 Research Corp Electrical precipitator power system
US2978065A (en) * 1957-07-03 1961-04-04 Svenska Flaektfabriken Ab Regulating electric precipitators
US2922085A (en) * 1958-09-05 1960-01-19 Koppers Co Inc Electrical precipitator
US2985840A (en) * 1958-10-23 1961-05-23 Ling Temco Electronics Inc Gain control amplifier
US3059394A (en) * 1959-09-08 1962-10-23 Koppers Co Inc Electrostatic precipitator
NL284981A (en) * 1961-11-02
US3262045A (en) * 1962-07-19 1966-07-19 Basic Products Corp Regulated d.c. power supply
US3312908A (en) * 1964-05-15 1967-04-04 Karl G Porges Device for superregulation of an amplifier-discriminator circuit
US3363402A (en) * 1964-08-07 1968-01-16 Detroit Edison Co Control system for electrical precipitators
US3360902A (en) * 1965-04-20 1968-01-02 Koppers Co Inc Electrode rapping control for an electrostatic precipitator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3837439A1 (en) * 1988-11-04 1990-05-10 Sms Schwingungs Messung System Process and apparatus for loosening dust and dirt particles in filter units

Also Published As

Publication number Publication date
US3469371A (en) 1969-09-30

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee