PH12020500387A1 - Boiler air preheating device, and boiler operation method - Google Patents

Boiler air preheating device, and boiler operation method

Info

Publication number
PH12020500387A1
PH12020500387A1 PH12020500387A PH12020500387A PH12020500387A1 PH 12020500387 A1 PH12020500387 A1 PH 12020500387A1 PH 12020500387 A PH12020500387 A PH 12020500387A PH 12020500387 A PH12020500387 A PH 12020500387A PH 12020500387 A1 PH12020500387 A1 PH 12020500387A1
Authority
PH
Philippines
Prior art keywords
boiler
air
stages
operation method
preheating device
Prior art date
Application number
PH12020500387A
Inventor
Hirotada Fujii
Original Assignee
Sumitomo Heavy Industries
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 Sumitomo Heavy Industries filed Critical Sumitomo Heavy Industries
Publication of PH12020500387A1 publication Critical patent/PH12020500387A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L15/00—Heating of air supplied for combustion
    • F23L15/04—Arrangements of recuperators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L15/00—Heating of air supplied for combustion
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Supply (AREA)

Abstract

Provided are an air preheating device for a boiler and a boiler operation method with which acid dew-point corrosion of an air preheater can be reduced without causing a large reduction in boiler efficiency and a significant increase in the cost of parts. The boiler air preheating device comprises: a plurality of stages of air preheaters (151, 152, 153) aligned along the direction of flow of exhaust gas; and a bypass passage (158d) that diverts a portion of combustion air upstream from an air passage of any one of the stages of air preheaters among the plurality of stages of air preheaters, said combustion air being diverted to a position upstream from the air passage of another of the stages of air preheaters. Furthermore, with regard to a boiler equipped with a flow rate adjustment unit (159) capable of changing the degree of opening of a bypass passage, this boiler operation method is a method for changing the degree of opening used by the flow rate adjustment unit, in accordance with the utilization rate of the boiler.
PH12020500387A 2017-09-12 2020-02-27 Boiler air preheating device, and boiler operation method PH12020500387A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017174445 2017-09-12
PCT/JP2018/030323 WO2019054117A1 (en) 2017-09-12 2018-08-15 Boiler air preheating device, and boiler operation method

Publications (1)

Publication Number Publication Date
PH12020500387A1 true PH12020500387A1 (en) 2021-01-04

Family

ID=65722689

Family Applications (1)

Application Number Title Priority Date Filing Date
PH12020500387A PH12020500387A1 (en) 2017-09-12 2020-02-27 Boiler air preheating device, and boiler operation method

Country Status (4)

Country Link
JP (1) JP7101180B2 (en)
KR (1) KR102483777B1 (en)
PH (1) PH12020500387A1 (en)
WO (1) WO2019054117A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111895442A (en) * 2019-05-06 2020-11-06 重庆市商顺换热设备有限公司 Flue gas treatment system of power plant
CN113008042B (en) * 2021-04-15 2023-04-18 新余钢铁股份有限公司 Preheater protection structure for heating furnace and use method thereof

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4305455A (en) * 1979-02-28 1981-12-15 Lipets Adolf U Multipass corrosion proof air heater
GB2046425B (en) 1979-04-06 1983-06-15 Lipets A U Multipass corrosion proof air heater
GB2139746B (en) 1983-04-22 1986-07-23 Lipets Adolf U Multipass corrosion-proof air preheater
JPS60162110A (en) 1984-02-02 1985-08-23 Mitsubishi Heavy Ind Ltd Temperature controller for fluidized-bed
JPH0194748A (en) 1987-10-07 1989-04-13 Casio Comput Co Ltd Calling device
JPH01234713A (en) * 1988-03-16 1989-09-20 Ngk Insulators Ltd Temperature control of incinerator

Also Published As

Publication number Publication date
KR20200052873A (en) 2020-05-15
JPWO2019054117A1 (en) 2020-10-22
JP7101180B2 (en) 2022-07-14
KR102483777B1 (en) 2022-12-30
WO2019054117A1 (en) 2019-03-21

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