JPS57175902A - Device for detecting height of fluidized layer - Google Patents

Device for detecting height of fluidized layer

Info

Publication number
JPS57175902A
JPS57175902A JP6130381A JP6130381A JPS57175902A JP S57175902 A JPS57175902 A JP S57175902A JP 6130381 A JP6130381 A JP 6130381A JP 6130381 A JP6130381 A JP 6130381A JP S57175902 A JPS57175902 A JP S57175902A
Authority
JP
Japan
Prior art keywords
fluidized layer
pressure difference
porous plate
layer
air
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
JP6130381A
Other languages
Japanese (ja)
Inventor
Yasuisa Yamamoto
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 JP6130381A priority Critical patent/JPS57175902A/en
Publication of JPS57175902A publication Critical patent/JPS57175902A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
    • B01J8/1809—Controlling processes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/0061—Controlling the level

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Arrangements Characterized By The Use Of Fluids (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)

Abstract

PURPOSE:To make it possible to ensure highly accurate monitoring at all times, in the detection of the height of the fluidized layer, by using an actually measured pressure difference between an upper tower cavity part and a lower wind box part with respect to a porous plate and the pressure difference computed from the amount of air supplied to the wind box. CONSTITUTION:The fluidized layer 2 in a boiler 1 is supported by the air which is blown in by a blower 4 through the porous plate 3. Pressure taking out ports 7 and 8 are provided in the tower cavity part on the fluid layer and a wind hopper 5 directly below the porous plate, respectively. The pressure difference Dx1 is detected by the pressure difference detector 9. A flow rate Q of the air for fluidization is measured by a flow meter 10. Since the pressure difference Dx2 between the upper and lower sides of the porous plate 3 can be expressed by second power function of the flow rate Q, Dx2 can be computed by using Q. The difference between these pressure differences, Dx1-Dx2, supports the weight per unit area of the fluidized layer. Therefore the height of the fluidized layer DELTAH can be obtained by the Formula DELTAH=(Dx1-Dx2)/K.gamma, where gamma is the weight per unit area of the fluidized layer and K is a constant.
JP6130381A 1981-04-24 1981-04-24 Device for detecting height of fluidized layer Pending JPS57175902A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6130381A JPS57175902A (en) 1981-04-24 1981-04-24 Device for detecting height of fluidized layer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6130381A JPS57175902A (en) 1981-04-24 1981-04-24 Device for detecting height of fluidized layer

Publications (1)

Publication Number Publication Date
JPS57175902A true JPS57175902A (en) 1982-10-29

Family

ID=13167275

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6130381A Pending JPS57175902A (en) 1981-04-24 1981-04-24 Device for detecting height of fluidized layer

Country Status (1)

Country Link
JP (1) JPS57175902A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61122406A (en) * 1984-11-16 1986-06-10 アセア　スタル　アクチーボラグ Boiler plant and control method thereof
JPS6446508A (en) * 1987-08-11 1989-02-21 Ube Industries Controlling method for fluidized bed boiler
JP2012058213A (en) * 2010-09-13 2012-03-22 Tokai Kiyouhan Kk Air micrometer
WO2016153419A1 (en) * 2015-03-25 2016-09-29 Vattenfall Ab Bubbling fluidized bed combustion device and method for monitoring the fluidized bed in such a combustion device
JP2017187199A (en) * 2016-04-04 2017-10-12 川崎重工業株式会社 Wet biomass incineration system and operational method of wet biomass combustion furnace

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4942719A (en) * 1972-08-31 1974-04-22

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4942719A (en) * 1972-08-31 1974-04-22

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61122406A (en) * 1984-11-16 1986-06-10 アセア　スタル　アクチーボラグ Boiler plant and control method thereof
JPS6446508A (en) * 1987-08-11 1989-02-21 Ube Industries Controlling method for fluidized bed boiler
JP2012058213A (en) * 2010-09-13 2012-03-22 Tokai Kiyouhan Kk Air micrometer
WO2016153419A1 (en) * 2015-03-25 2016-09-29 Vattenfall Ab Bubbling fluidized bed combustion device and method for monitoring the fluidized bed in such a combustion device
US10801719B2 (en) 2015-03-25 2020-10-13 Vattenfall Ab Bubbling fluidized bed combustion device and method for monitoring the fluidized bed in such a combustion device
JP2017187199A (en) * 2016-04-04 2017-10-12 川崎重工業株式会社 Wet biomass incineration system and operational method of wet biomass combustion furnace

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