JPS57196013A - Denitrating device for waste heat recovery boiler - Google Patents

Denitrating device for waste heat recovery boiler

Info

Publication number
JPS57196013A
JPS57196013A JP7927181A JP7927181A JPS57196013A JP S57196013 A JPS57196013 A JP S57196013A JP 7927181 A JP7927181 A JP 7927181A JP 7927181 A JP7927181 A JP 7927181A JP S57196013 A JPS57196013 A JP S57196013A
Authority
JP
Japan
Prior art keywords
waste gas
duct
bypassing
denitrating device
upstream
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.)
Pending
Application number
JP7927181A
Other languages
Japanese (ja)
Inventor
Iwao Kusaka
Shunji Emoto
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.)
Mitsubishi Power Ltd
Original Assignee
Babcock Hitachi KK
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 Babcock Hitachi KK filed Critical Babcock Hitachi KK
Priority to JP7927181A priority Critical patent/JPS57196013A/en
Publication of JPS57196013A publication Critical patent/JPS57196013A/en
Pending 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
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/008—Adaptations for flue gas purification in steam generators

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chimneys And Flues (AREA)

Abstract

PURPOSE:To enable keeping of the temperature of waste gas at a preferable catalyst temperature at the starting time of the titled device by a method wherein ducts bypassing a group of heat transmitting pipes positioned at an upstream of the denitrating device are arranged and the waste gas is passed through the bypass ducts at the time of starting. CONSTITUTION:There are arranged a first bypassing duct 6 having a flow inlet port at the upstream of an over-heater unit 2 and also having an outlet port at the arranging part of the denitrating device, and a second bypassing duct 8 having a flow inlet port at the waste gas duct 1 opposing to the duct 6. When the boiler is started to operate, dampers 4 and 9 are closed and dampers 7 and 11 are opened, the waste gas G is flowed into the first bypassing duct 6 at the upstream of the over-heater unit 2, then bypasses the over-heater unit 2 and an evaporater unit 3, and directly flowed into the denitrating device 5. Therefore, the waste gas G is flowed into the denitrating device 5 without being removed of any heat, and thus it is possible to keep the catalyst at preferable temperature from the starting time.
JP7927181A 1981-05-27 1981-05-27 Denitrating device for waste heat recovery boiler Pending JPS57196013A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7927181A JPS57196013A (en) 1981-05-27 1981-05-27 Denitrating device for waste heat recovery boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7927181A JPS57196013A (en) 1981-05-27 1981-05-27 Denitrating device for waste heat recovery boiler

Publications (1)

Publication Number Publication Date
JPS57196013A true JPS57196013A (en) 1982-12-01

Family

ID=13685194

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7927181A Pending JPS57196013A (en) 1981-05-27 1981-05-27 Denitrating device for waste heat recovery boiler

Country Status (1)

Country Link
JP (1) JPS57196013A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62206316A (en) * 1986-02-28 1987-09-10 ドイツチエ　バブコツク　ヴエルケ　アクチエンゲゼルシヤフト Device for adjusting temperature of flue gas
US4912928A (en) * 1987-09-11 1990-04-03 Mitsubishi Jukogyo Kabushiki Kaisha Exhaust heat exchanger system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62206316A (en) * 1986-02-28 1987-09-10 ドイツチエ　バブコツク　ヴエルケ　アクチエンゲゼルシヤフト Device for adjusting temperature of flue gas
US4912928A (en) * 1987-09-11 1990-04-03 Mitsubishi Jukogyo Kabushiki Kaisha Exhaust heat exchanger system

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