JPS6410021A - Computing device for unburnt part in ash at coal-fired boiler - Google Patents

Computing device for unburnt part in ash at coal-fired boiler

Info

Publication number
JPS6410021A
JPS6410021A JP62162458A JP16245887A JPS6410021A JP S6410021 A JPS6410021 A JP S6410021A JP 62162458 A JP62162458 A JP 62162458A JP 16245887 A JP16245887 A JP 16245887A JP S6410021 A JPS6410021 A JP S6410021A
Authority
JP
Japan
Prior art keywords
ash
unburnt
amount
fuel
computing element
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
JP62162458A
Other languages
Japanese (ja)
Inventor
Tadahiro Kishikawa
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 Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP62162458A priority Critical patent/JPS6410021A/en
Publication of JPS6410021A publication Critical patent/JPS6410021A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/003—Systems for controlling combustion using detectors sensitive to combustion gas properties
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2241/00—Applications
    • F23N2241/10—Generating vapour

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)
  • Regulation And Control Of Combustion (AREA)

Abstract

PURPOSE:To improve efficiency in minimizing exhaust gas loss by a method wherein the amount of unburnt part in combustion ash is obtained by continuous computation in actual operation time and operation is carried out in reducing excess air as much as possible at all times. CONSTITUTION:Respective outputs of a computing element 6 for received heat amount of generated steam, a computing element 7 for fuel heat input, and a computing element 8 for boiler efficiency are fed into a computing element 9 for unburnt rate to obtain an unburnt rate. The output of the element 9, the changed amount of fuel 3, and an ash ratio 10 in fuel previously obtained are fed into a computing element 11 for the unburnt part in ash to obtain the unburnt part in combustion ash. The unburnt part in ash thus obtained becomes a bias 16 for setting a heat ratio suitably. The bias 16 is added to or subtracted from the valve of a setting device 17 for an air fuel ratio as the ratio of air to fuel in a bias from and fed into a device 20 for setting an air flow amount to keep the amount of the unburnt part in ash under a limited value. An excess air amount set by the device 20 is used to control the air flow amount 4.
JP62162458A 1987-07-01 1987-07-01 Computing device for unburnt part in ash at coal-fired boiler Pending JPS6410021A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62162458A JPS6410021A (en) 1987-07-01 1987-07-01 Computing device for unburnt part in ash at coal-fired boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62162458A JPS6410021A (en) 1987-07-01 1987-07-01 Computing device for unburnt part in ash at coal-fired boiler

Publications (1)

Publication Number Publication Date
JPS6410021A true JPS6410021A (en) 1989-01-13

Family

ID=15754997

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62162458A Pending JPS6410021A (en) 1987-07-01 1987-07-01 Computing device for unburnt part in ash at coal-fired boiler

Country Status (1)

Country Link
JP (1) JPS6410021A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003074833A (en) * 2001-09-04 2003-03-12 Mitsubishi Heavy Ind Ltd Coal combustion control system
CN102192495A (en) * 2011-04-20 2011-09-21 上海交通大学 Fouling monitoring system and method for superheater of coal-fired boiler
JP2012529052A (en) * 2009-06-04 2012-11-15 アルストム テクノロジー リミテッド How to determine carbon dioxide emissions from a steam generation system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003074833A (en) * 2001-09-04 2003-03-12 Mitsubishi Heavy Ind Ltd Coal combustion control system
JP2012529052A (en) * 2009-06-04 2012-11-15 アルストム テクノロジー リミテッド How to determine carbon dioxide emissions from a steam generation system
CN102192495A (en) * 2011-04-20 2011-09-21 上海交通大学 Fouling monitoring system and method for superheater of coal-fired boiler

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