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CA2036018A1 - Method and system for handling exhaust gas in a boiler - Google Patents

Method and system for handling exhaust gas in a boiler

Info

Publication number
CA2036018A1
CA2036018A1 CA 2036018 CA2036018A CA2036018A1 CA 2036018 A1 CA2036018 A1 CA 2036018A1 CA 2036018 CA2036018 CA 2036018 CA 2036018 A CA2036018 A CA 2036018A CA 2036018 A1 CA2036018 A1 CA 2036018A1
Authority
CA
Canada
Prior art keywords
electrostatic precipitator
dry electrostatic
exhaust gas
dry
dust
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
CA 2036018
Other languages
French (fr)
Other versions
CA2036018C (en
Inventor
Masami Kato
Tadashi Tanaka
Yasuki Nishimura
Katsutoshi Yata
Masahiko Nakao
Takeshi Sakai
Tsuyoshi Ohishi
Tsuneo Higashi
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.)
Chubu Electric Power Co Inc
Mitsubishi Heavy Industries Ltd
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 CA2036018A1 publication Critical patent/CA2036018A1/en
Application granted granted Critical
Publication of CA2036018C publication Critical patent/CA2036018C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/006—Layout of treatment plant
    • 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
    • B03C3/01—Pretreatment of the gases prior to electrostatic precipitation
    • 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
    • B03C3/01—Pretreatment of the gases prior to electrostatic precipitation
    • B03C3/014—Addition of water; Heat exchange, e.g. by condensation
    • 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
    • B03C3/019—Post-treatment of gases
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2215/00—Preventing emissions
    • F23J2215/20—Sulfur; Compounds thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2217/00—Intercepting solids
    • F23J2217/10—Intercepting solids by filters
    • F23J2217/102—Intercepting solids by filters electrostatic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2219/00—Treatment devices
    • F23J2219/60—Sorption with dry devices, e.g. beds

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrostatic Separation (AREA)
  • Treating Waste Gases (AREA)
  • Chimneys And Flues (AREA)

Abstract

In a coal-fired boiler, a heat recovery unit is located upstream of a dry electrostatic precipitator so as to reduce the temperature of exhaust gas at the inlet of the dry electrostatic precipitator and thus, prevent reverse ionization in the electrostatic precipitator.
The heat recovery unit located upstream of the dry electrostatic precipitator will in no way by corroded even if the concentration of dust is reduced in the dry electrostatic precipitator. A desulfurization unit does not require a cooling/dust removing section and eliminates the need for a wet electrostatic precipitator. The dry electrostatic precipitator includes a gas passage divided into a plurality of parallel passages and dampers operable to close the passages. This arrangement prevents dust from being dispersed as a result of hammering without charge.
CA 2036018 1989-08-09 1991-02-08 Method and system for handling exhaust gas in a boiler Expired - Lifetime CA2036018C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1204591A JPH0756377B2 (en) 1989-08-09 1989-08-09 Method and apparatus for treating boiler exhaust gas

Publications (2)

Publication Number Publication Date
CA2036018A1 true CA2036018A1 (en) 1992-08-09
CA2036018C CA2036018C (en) 1998-06-30

Family

ID=16493004

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2036018 Expired - Lifetime CA2036018C (en) 1989-08-09 1991-02-08 Method and system for handling exhaust gas in a boiler

Country Status (5)

Country Link
EP (1) EP0498020B1 (en)
JP (1) JPH0756377B2 (en)
CA (1) CA2036018C (en)
DE (1) DE69120927T2 (en)
DK (1) DK0498020T3 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4306228A1 (en) * 1993-02-27 1994-09-01 Abb Patent Gmbh Flue gas filter arrangement for dusts and gaseous pollutants
JP3216743B2 (en) * 1993-04-22 2001-10-09 富士電機株式会社 Protection diode for transistor
JP2826560B2 (en) * 1996-06-03 1998-11-18 バブコック日立株式会社 Exhaust gas treatment method
JP3611272B2 (en) 1997-12-19 2005-01-19 三菱重工業株式会社 Rotating regenerative heat exchanger
JP3546132B2 (en) * 1997-12-22 2004-07-21 三菱重工業株式会社 Exhaust gas treatment method
US6710295B1 (en) 2000-06-15 2004-03-23 Hitachi Global Storage Technologies Netherlands, B.V. Slider curvature modification by substrate melting effect produced with a pulsed laser beam
JP2011094962A (en) * 2004-11-29 2011-05-12 Mitsubishi Heavy Ind Ltd Heat recovery equipment
JP2006295062A (en) 2005-04-14 2006-10-26 Rohm Co Ltd Semiconductor device
JP5209952B2 (en) * 2007-12-19 2013-06-12 三菱重工メカトロシステムズ株式会社 High dust exhaust gas heat recovery treatment equipment
JP5281858B2 (en) * 2008-09-22 2013-09-04 バブコック日立株式会社 Exhaust gas treatment equipment
PL2354651T3 (en) 2010-01-18 2014-11-28 General Electric Technology Gmbh System for combined flue heat recovery and dust precipitation improvement as retrofit solution for existing coal-fired power stations
JP5900604B2 (en) * 2012-03-14 2016-04-06 株式会社Ihi Oxy-combustion boiler system

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS521144B2 (en) * 1974-05-15 1977-01-12
US3988127A (en) * 1975-05-07 1976-10-26 John Louis Schumann Electrostatic precipitator apparatus and method
DE2520957C3 (en) * 1975-05-10 1978-08-31 Metallgesellschaft Ag, 6000 Frankfurt Process for removing dusty and gaseous pollutants from starter exhaust gas
JPS521144A (en) * 1975-06-20 1977-01-06 Toshiba Machine Co Ltd Cut wire detector for wire twister
DE2724372C2 (en) * 1977-05-28 1986-02-13 Klöckner-Humboldt-Deutz AG, 5000 Köln Process for conditioning bypass gases
AU500466B2 (en) * 1977-08-01 1979-05-24 Metallgesellschaft Ag Cleaning gases from sintering plants
JPS5792614A (en) * 1980-12-02 1982-06-09 Mitsui Eng & Shipbuild Co Ltd Equipment for disposal of waste gas
JPS58120020A (en) * 1982-01-13 1983-07-16 Mitsubishi Heavy Ind Ltd Disposal of exhaust smoke
US4559211A (en) * 1983-08-05 1985-12-17 Research-Cottrell, Inc. Method for reduced temperature operation of flue gas collectors
US4582122A (en) * 1983-08-10 1986-04-15 Linde Aktiengesellschaft Efficient waste heat recovery process from sulfur containing flue gas
JPS60227844A (en) * 1984-04-27 1985-11-13 Mitsubishi Heavy Ind Ltd Treating equipment of stack gas
JPS61111125A (en) * 1984-11-02 1986-05-29 Mitsubishi Heavy Ind Ltd Treatment of stack gas
FR2572952B1 (en) * 1984-11-14 1987-02-06 Kaiser Victor PROCESS AND INSTALLATION FOR PURIFYING SMOKE
DE3604946C2 (en) * 1986-02-17 1987-04-09 Mehdi Haji Dr.-Ing. 7259 Friolzheim Javad Method and device for cleaning flue gases
DE3608690A1 (en) * 1986-03-15 1987-09-17 Rennebeck Klaus Process for material separation or exhaust gas purification
JP2573589B2 (en) * 1987-01-09 1997-01-22 バブコツク日立株式会社 Flue gas treatment equipment

Also Published As

Publication number Publication date
DK0498020T3 (en) 1996-12-16
DE69120927D1 (en) 1996-08-22
CA2036018C (en) 1998-06-30
JPH0756377B2 (en) 1995-06-14
EP0498020B1 (en) 1996-07-17
JPH0370907A (en) 1991-03-26
DE69120927T2 (en) 1996-12-05
EP0498020A1 (en) 1992-08-12

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry