CA2072129A1 - Multiple Rapper Control for Electrostatic Precipitator - Google Patents

Multiple Rapper Control for Electrostatic Precipitator

Info

Publication number
CA2072129A1
CA2072129A1 CA2072129A CA2072129A CA2072129A1 CA 2072129 A1 CA2072129 A1 CA 2072129A1 CA 2072129 A CA2072129 A CA 2072129A CA 2072129 A CA2072129 A CA 2072129A CA 2072129 A1 CA2072129 A1 CA 2072129A1
Authority
CA
Canada
Prior art keywords
rapper
computer
power
electrostatic precipitator
energization
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
CA2072129A
Other languages
French (fr)
Other versions
CA2072129C (en
Inventor
David F. Johnston
Michael M. Mahler
Verne Johnson Pickren
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.)
BHA Group Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2072129A1 publication Critical patent/CA2072129A1/en
Application granted granted Critical
Publication of CA2072129C publication Critical patent/CA2072129C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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)
  • Ac-Ac Conversion (AREA)
  • Rectifiers (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

A multiple rapper control (10) for an electrostatic precipitator for monitoring and individually controlling each of a plural-ity of rappers based on computer (12) stored rapper characteristics including the voltage type, the voltage level, the pre-set electri-cal input current, the minimum increment between energization cycles, and the maximum duration of energization. Each rapper is connected to a TRIAC switch device (20) linked to a computer (14) and a power control means (16) to vary the input power to each rapper supplied from a power source (18). Current detecting means (22) is bi-directionally connected to the computer (14) and is connected to the power control means (16) to sense and measure the peak electrical input current to each rapper. A prese-lected logic sequence stored in the computer (12) controls power to each rapper. Optional polarity reversal means (37) eliminate undesirable magnetization of rapper components.
CA002072129A 1989-10-30 1990-06-29 Multiple rapper control for electrostatic precipitator Expired - Lifetime CA2072129C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
USPCT/US89/04850 1989-10-30
PCT/US1989/004850 WO1991006371A1 (en) 1989-10-30 1989-10-30 Multiple rapper control for electrostatic precipitator

Publications (2)

Publication Number Publication Date
CA2072129A1 true CA2072129A1 (en) 1991-05-01
CA2072129C CA2072129C (en) 1995-06-13

Family

ID=22215333

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002072129A Expired - Lifetime CA2072129C (en) 1989-10-30 1990-06-29 Multiple rapper control for electrostatic precipitator

Country Status (2)

Country Link
CA (1) CA2072129C (en)
WO (2) WO1991006371A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8404020B2 (en) * 2008-09-03 2013-03-26 Babcock & Wilcox Power Generation Group, Inc. Systems and methods for monitoring a rapping process

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4035165A (en) * 1974-10-02 1977-07-12 Wahlco, Inc. Rapper monitor
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
US4086646A (en) * 1976-12-30 1978-04-25 Belco Pollution Control Corporation System for the control of rappers in an electrostatic precipitator
US4290003A (en) * 1979-04-26 1981-09-15 Belco Pollution Control Corporation High voltage control of an electrostatic precipitator system
US4255775A (en) * 1979-05-29 1981-03-10 Research Cottrell, Inc. Electrostatic precipitator rapper control system with enhanced accuracy
US4928456A (en) * 1988-06-16 1990-05-29 Nwl Transformers Process for rapping of electrostatic precipitator surfaces

Also Published As

Publication number Publication date
WO1991006372A1 (en) 1991-05-16
CA2072129C (en) 1995-06-13
WO1991006371A1 (en) 1991-05-16

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