WO2012172636A1 - Dispositif de mesure automatique de concentration de métal lourd dans des cendres - Google Patents

Dispositif de mesure automatique de concentration de métal lourd dans des cendres Download PDF

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Publication number
WO2012172636A1
WO2012172636A1 PCT/JP2011/063544 JP2011063544W WO2012172636A1 WO 2012172636 A1 WO2012172636 A1 WO 2012172636A1 JP 2011063544 W JP2011063544 W JP 2011063544W WO 2012172636 A1 WO2012172636 A1 WO 2012172636A1
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WO
WIPO (PCT)
Prior art keywords
ash
ash collection
collection container
heavy metal
container
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.)
Ceased
Application number
PCT/JP2011/063544
Other languages
English (en)
Japanese (ja)
Inventor
浩希 原田
栄輔 森脇
通孝 古林
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.)
Kanadevia Corp
Original Assignee
Hitachi Zosen Corp
Hitachi Shipbuilding and Engineering Co 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 Hitachi Zosen Corp, Hitachi Shipbuilding and Engineering Co Ltd filed Critical Hitachi Zosen Corp
Priority to JP2013520347A priority Critical patent/JP5657112B2/ja
Priority to PCT/JP2011/063544 priority patent/WO2012172636A1/fr
Priority to KR1020137023508A priority patent/KR20130124557A/ko
Priority to CN201180069773.XA priority patent/CN103460013B/zh
Publication of WO2012172636A1 publication Critical patent/WO2012172636A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
    • G01N23/223—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material by irradiating the sample with X-rays or gamma-rays and by measuring X-ray fluorescence
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/07—Investigating materials by wave or particle radiation secondary emission
    • G01N2223/076—X-ray fluorescence

Definitions

  • the present invention relates to an automatic measuring device for heavy metal concentration in ash discharged from, for example, a dust collector provided in an incinerator.
  • the exhaust gas discharged from an incinerator contains ash such as fly ash, and this ash contains heavy metals that are harmful substances such as lead, cadmium, and chromium.
  • ash such as fly ash
  • this ash contains heavy metals that are harmful substances such as lead, cadmium, and chromium.
  • chemicals are used to suppress the elution of heavy metals contained in ash into the environment.
  • Patent Document 1 there is a system that uses X-rays as a system for measuring heavy metal concentration (see, for example, Patent Document 1).
  • This system for example, guides ash from a bag filter onto a belt conveyor, places a fluorescent X-ray analyzer at an upper position in the middle of the belt conveyor, and irradiates X-rays onto the belt conveyor to measure heavy metal concentrations.
  • a fluorescent X-ray analyzer at an upper position in the middle of the belt conveyor, and irradiates X-rays onto the belt conveyor to measure heavy metal concentrations.
  • an appropriate amount of the drug for preventing elution has been demanded depending on this concentration.
  • the ash captured by the bag filter is guided onto the belt conveyor and the heavy metal concentration is measured, but it can be used for the ash movement path provided in the vertical direction. There wasn't.
  • an object of the present invention is to provide an automatic measuring device capable of automatically measuring the heavy metal concentration in the ash falling in the ash movement path provided in the vertical direction.
  • the present invention is an automatic measuring device that collects ash moving in an ash moving path provided in a vertical direction and measures the concentration of heavy metals in the ash,
  • the ash collection passage connected to the opening provided in the side wall of the ash movement path, the ash collection means provided in the ash collection passage, and X-rays are irradiated to the ash to detect the intensity of the fluorescent X-ray.
  • the ash collection passage is formed by an extraction passage portion whose one end side is connected to the opening portion in the horizontal direction and a discharge passage portion connected in the vertical direction to the other end side of the extraction passage portion,
  • the ash collecting means is arranged so as to be movable in the take-out passage section and has an open upper surface, and is arranged so as to be movable in the take-out passage section and swings one end side of the ash collection container.
  • a smoothing member having at least a lower surface made semicircular for cutting off the ash stored in the ash collection container is provided, Further, the radius of the lower surface of the smoothing member is set in the range of 5 to 15 mm, and the moving speed of the ash collection container is set in the range of 0.1 to 0.5 m / sec.
  • the ash collection container in the automatic measuring device is provided with a vibration applicator that applies vibration by ultrasonic waves.
  • the present invention provides the automatic measuring apparatus according to the above, wherein when the ash collection container is moved to the ash collection position by the moving means, the other end side of the ash collection container bottom is supported by the bottom wall surface of the extraction passage section.
  • the support surface that supports the other end of the bottom of the ash collection container when the ash collection container is moved to the ash discharge position is lower than the bottom wall surface of the extraction passage section. So that it ’s tilted,
  • the ash collection container is formed so that at least the side wall surface on the other end side is inclined outward and the inclination angle is equal to or greater than the repose angle of ash.
  • the ash collection path is connected to the ash movement path provided in the vertical direction in the horizontal direction, and the ash collection container that can be moved into and out of the ash movement path is connected to the ash collection path.
  • a smoothing member having a semicircular shape at least on the bottom surface for cutting off the ash stored in the ash collection container, and a radius of the bottom surface of the smoothing member in the range of 5 to 15 mm. Since the moving speed of the ash collection container is in the range of 0.1 to 0.5 m / sec, the ash falling in the ash movement path provided in the vertical direction can be used as a simple measurement sample. With the configuration, it is possible to easily and surely capture a predetermined bag.
  • the vibration applicator since the vibration applicator is attached to the ash collection container, it can be densely taken into the container during ash collection, so that X-ray measurement can be performed with high accuracy.
  • the ash collection container can be tilted into the discharge passage part by its own weight by moving the ash collection container to the other end side by the moving means.
  • the ash stored inside can be discharged.
  • the ash can be reliably discharged by applying vibration to the ash collection container with the vibration applicator.
  • This automatic measuring device for heavy metal concentration is an ash from a ash storage tank that temporarily stores ash collected by a dust collector (for example, a bag filter) in an incinerator to a heavy metal fixing processing device. It is provided in a chute for guiding and collects ash that falls in the chute as a sample, and measures the heavy metal concentration contained in the ash as the collected sample.
  • a dust collector for example, a bag filter
  • a rectangular shape is provided at a predetermined position on the side wall portion of a chute (an example of an ash movement path) provided in the vertical direction for guiding ash from the ash storage tank to the heavy metal fixing treatment device.
  • An opening 1a is formed, and an ash collection passage 2 for collecting ash as a sample is connected to the opening 1a.
  • the ash collection passage 2 has one end side in communication with the extraction passage portion 3 connected in the horizontal direction to the opening 1 a of the chute 1 and the other end side of the extraction passage portion 3 and the extraction passage portion 3.
  • the rear bottom wall 3d which is a connecting portion between the bottom wall 3c of the take-out passage 3 and the side wall 4a of the discharge passage 4, is composed of a discharge passage 4 that hangs downward. It is made into the downward inclined surface (it may be the circular arc surface swelled to the upper side).
  • one end side on the chute 1 side of the extraction passage portion 3 is referred to as a front side
  • the other end side on the discharge passage portion 4 side is referred to as a rear side.
  • an ash collection device (an example of ash collection means) 5 for collecting ash and an X-ray measurement for measuring heavy metal concentration in the ash as a sample collected by the ash collection device 5
  • An apparatus (an example of X-ray measuring means, also referred to as an X-ray analyzer) 6 is provided.
  • the ash collection device 5 is provided on the other end side of the take-out passage portion 3 and the support member 11 for connecting U-shaped in a plan view, which is movably disposed in the take-out passage portion 3 and the support member.
  • 11 is connected to the rod portion 12a and moves the support member 11 in the take-out passage portion 3 in the front-rear direction, and a moving cylinder device 12 (an example of a moving means), and a horizontal position near the opening end of the support member 11
  • the ash collection container 14 whose front end side is swingably supported via the support pins 13 and the upper surface of the ash collection container 14 attached to the upper edge side of the opening 1a of the chute 1 (in particular, a container to be described later) It comprises a round bar-shaped scraping member (an example of a smoothing member) 15 for flattening the upper surface of the main body.
  • the support member 11 is slidably disposed on the bottom wall portion (bottom wall surface) 3c of the take-out passage portion 3, and in some cases, the support member 11 can be transferred to the support member 11 on the bottom wall portion 3c. May be provided.
  • the ash collection container 14 is supported on the front end side by the support pin 13 so as to be swingable, and is disposed on the front side of the frame-shaped portion 16 and the frame-shaped portion 16 having a rectangular plan view.
  • the container body portion 17 has an open upper surface, and the front and rear side wall surfaces 17a and 17b of the container body portion 17 are inclined outward, and at least the vertical of the rear side wall surface 17b is vertical.
  • the inclination angle ⁇ with respect to the line is made larger than the repose angle of ash.
  • the ash collection container 14 can reciprocate between the ash collection position (A) in the chute 1 and the ash discharge position (B) corresponding to the discharge passage portion 4 by the moving cylinder device 12. Has been.
  • the front end portion of the frame-like portion 16 of the ash collection container 14 is swingably supported on the front end side of the support member 11, and the rear end side is the bottom wall portion of the extraction passage portion 3. Therefore, when the container main body portion 17 of the ash collection container 14 is moved to the ash collection position (A) in the chute 1, the rear end side of the frame-shaped portion 16 is the bottom of the extraction passage portion 3.
  • the rear end side of the frame-like portion 16 is the take-out passage. Since the container body part 17 falls into the discharge passage part 4 through the rear bottom wall part 3d of the part 3, the container body part 17 assumes a vertical posture through a tilting posture.
  • the moving speed of the ash collection container 14, especially the pull-in speed is too slow, the measurement time becomes long, and if it is too fast, a cracked depression occurs on the scraped surface.
  • the range is from 1 to 0.5 m / sec.
  • the time for moving the ash collection container 14 to the chute 1 (time for protruding to the chute) is short, sufficient ash cannot be collected, which affects measurement accuracy, and if it is too long, the measurement time becomes long. Therefore, an appropriate time is selected because the measurement frequency decreases.
  • a desirable time for collecting a sufficient amount of ash necessary for measurement is, for example, 30 to 120 seconds when the inner diameter of the chute 1 is 0.3 m and 700 kg of ash falls per hour. It is said. In addition, when the inner diameter of the chute 1 and the amount of fall of ash are different, the time is also different.
  • the size of the ash collection container 14 is made suitable for the area where X-ray irradiation is performed during measurement.
  • a vibration applicator (ultrasonic vibrator) 18 for applying vibration by ultrasonic waves is attached to the side surface of the container main body 17.
  • the ash when collecting ash, by applying ultrasonic vibration to the container body 17, the ash becomes denser and uniform, leading to improved measurement accuracy.
  • the ash in the container main body portion 17 can be reliably discharged by applying vibration.
  • vibration applicator 18 may be attached to a place other than the container main body 17 in the ash collection container 14, for example, the frame-shaped part 16.
  • the appropriate range is 10 to 30 mm.
  • the opening 3b is provided in the middle of the upper wall 3a of the extraction passage portion 3, that is, between the ash collection position (A) and the ash discharge position (B).
  • the X-ray measuring device 6 is arranged at 3b. This position is referred to as an ash measurement position (C).
  • the X-ray irradiation window 6a of the X-ray measurement apparatus 6 is inserted into the opening 3b, and the X-ray measurement apparatus 6 is fixed.
  • the X-ray measuring apparatus 6 will be briefly described.
  • the X-ray is irradiated from the irradiation window 6a to the container main body 17 in the ash collection container 14, that is, the measurement object stored in the container main body 17.
  • a certain amount of ash is irradiated, fluorescent X-rays excited from a substance constituting the ash are made incident, the amount of the substance is detected from the intensity (count amount), and the heavy metal concentration in the ash is measured.
  • the X-ray measurement apparatus 6 includes at least an X-ray generation unit that generates X-rays and emits the X-rays, and an X-ray incident unit that enters fluorescent X-rays excited by the measurement target; An intensity detector that detects the intensity of fluorescent X-rays incident at the X-ray incident part, and detects the amount of heavy metal contained in the ash based on the intensity detected by the intensity detector, A concentration calculation unit to be obtained, and the total intensity (total count amount) of the fluorescent X-rays detected by the intensity detection unit is obtained, and the surface state of the measurement object having the total intensity value a is good.
  • the surface state detection unit when the obtained ratio c is lower than a preset threshold value, it is determined that the surface state is not smoothed and an error occurs in the measurement value. Of course, when it is determined that the surface state is not smoothed, the heavy metal concentration measured at this time is ignored.
  • this threshold value the total intensity and measurement error at that time are obtained according to various surface conditions by experiments, and the total intensity corresponding to the allowable measurement error is set as the threshold value. For example, a specific example is shown in the graph of FIG.
  • the threshold value in this case is set to 900 cps. Is done.
  • the container body 17 is moved from the chute 1 cut off from the outside to the discharge passage 4 side through the extraction passage 3 cut off from the outside. That is, the entire ash collection passage 2 has a sealed structure separated from the outside (outside the system).
  • the rod portion 12 a of the moving cylinder device 12 is protruded to remove the container main body portion 17 of the ash collection container 14 from the extraction passage portion 3.
  • the ash is moved to the ash collection position (A) in the chute 1 and the ash is stored in a pile shape in the container main body portion 17.
  • the container body portion 17 is drawn into the take-out passage portion 3 side by the moving cylinder device 12 and moved to the ash measurement position (C).
  • vibration is applied to the container body 17 by the vibration applicator 18 to make the ash dense, and the container body 17 is provided by the sliding member 15 provided in the opening 1a of the chute 1.
  • the pile of ash that has been piled up is removed and the surface is flattened.
  • the X-ray measuring device 6 irradiates the container main body portion 17 with X-rays to measure the heavy metal concentration in the ash.
  • the ratio is lower than the threshold value, the surface state in the container main body 17 is bad (for example, the sample is insufficient or the surface is cracked, depressed, etc.), and the measurement result has an error. Therefore, the measured heavy metal concentration is invalidated.
  • the container main body 17 is moved backward again by the moving cylinder device 12 and finally moved to the ash discharge position (B).
  • the rear end side of the frame-like part 16 is supported by the bottom wall part 3c of the extraction passage part 3 at the ash collection position (A) and the ash measurement position (C).
  • the rear bottom wall portion 3d as the support surface of the extraction passage portion 3 corresponding to the discharge passage portion 4 is inclined, so that it is indicated by a virtual line in FIG.
  • the rear end side of the frame-shaped portion 16 starts to descend, and finally, the entire frame-shaped portion 16 tilts rearward and becomes a vertical posture through a tilting posture.
  • the ash stored in the container body 17 is dropped into the discharge passage 4.
  • vibration is applied to the container main body 17 by the vibration applicator 18, and the inclination angle ⁇ of the rear side wall surface 17b of the container main body 17 is larger than the repose angle of the ash. Therefore, all the ash in the container main body 17 is discharged.
  • the heavy metal concentration measured by the X-ray measuring device 6 is sent to a heavy metal fixing processing device (not shown) arranged in a post-process, where an optimum amount for the ash discharged from the chute 1 is obtained.
  • the fixed drug will be supplied.
  • the container main body portion 17 is changed from the tilting posture to the vertical posture so that ash is discharged.However, as long as the inclination angle of the rear side wall surface 17b is an angle at which the ash falls naturally, It does not have to be a vertical posture. That is, it may be tilted.
  • the container main body portion 17, that is, the frame-shaped portion 16 has been described as tilting to the rear side by its own weight, but by forcing a weight on the rear end side of the frame-shaped portion 16, The rear side may be tilted.
  • the ash in the chute 1 can enter the ash collection passage 2 when measurement is not performed. It can be prevented from entering.
  • the chute has been described as the ash movement path, a bypass is provided in the chute, and the heavy metal concentration in the ash falling (passing) through the bypass may be measured.
  • the ash collection passage is connected to the chute provided in the vertical direction in the horizontal direction, and an ash collection container that can be moved into and out of the chute is provided in the ash collection passage.
  • a smoothing member having at least a lower surface formed in a semicircular shape for cutting off the ash stored in the ash collection container is provided, and the lower surface has a radius of 5 to 15 mm. Since the moving speed of the ash collection container is in the range of 0.1 to 0.5 m / sec, the ash falling in the chute provided in the vertical direction can be easily used as a measurement sample with a simple configuration. In addition, a predetermined amount can be taken in reliably.
  • the vibration applicator since the vibration applicator is attached to the ash collection container, it can be densely taken into the container during ash collection, so that X-ray measurement can be performed with high accuracy.
  • the ash collection container can be moved to the other end side by the moving cylinder device, so that it can be tilted into the discharge passage by its own weight.
  • the ash stored in the container can be discharged.
  • the ash can be reliably discharged by applying vibration to the ash collection container with the vibration applicator.
  • the container body portion of the ash collection container is withdrawn / retracted from the opening in the chute (ash movement path), and the container body portion is moved to the container body portion by a round bar-shaped sliding member (smoothing member) provided in the opening portion. Since the stored ash is made dense and the surface is smoothed, the ash that falls in the vertical direction is taken into the container main body, and then directly as it is by an X-ray measuring device (X-ray measuring means). The concentration of X-rays can be measured. Therefore, for example, after a sample is formed using a hydraulic briquette press, the configuration is much higher than when the sample is taken out from the hydraulic briquette press and subjected to fluorescent X-ray inspection. It can be simplified, and it is possible to reduce the labor required for the X-ray examination and the cost of the apparatus.

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  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Hydrology & Water Resources (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

Un passage de collecte de cendres (2) est relié horizontalement à une goulotte verticale (1), un récipient de collecte de cendres (14) pouvant entrer et sortir de la goulotte (1) est disposé dans ledit passage de collecte de cendres (2), et un élément de nivellement (15) en forme de barre ronde pour niveler les cendres stockées dans le récipient de collecte de cendres (14) est utilisé. Le rayon de l'élément de nivellement (15) est réglé dans la plage comprise entre 5 et 15 mm, et la vitesse de déplacement du récipient de collecte de cendres (14) est établie à 0,1-0,5 m/sec.
PCT/JP2011/063544 2011-06-14 2011-06-14 Dispositif de mesure automatique de concentration de métal lourd dans des cendres Ceased WO2012172636A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2013520347A JP5657112B2 (ja) 2011-06-14 2011-06-14 灰中の重金属濃度の自動計測装置
PCT/JP2011/063544 WO2012172636A1 (fr) 2011-06-14 2011-06-14 Dispositif de mesure automatique de concentration de métal lourd dans des cendres
KR1020137023508A KR20130124557A (ko) 2011-06-14 2011-06-14 재 속의 중금속농도의 자동계측장치
CN201180069773.XA CN103460013B (zh) 2011-06-14 2011-06-14 灰中的重金属浓度自动测量装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2011/063544 WO2012172636A1 (fr) 2011-06-14 2011-06-14 Dispositif de mesure automatique de concentration de métal lourd dans des cendres

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WO2012172636A1 true WO2012172636A1 (fr) 2012-12-20

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JP (1) JP5657112B2 (fr)
KR (1) KR20130124557A (fr)
CN (1) CN103460013B (fr)
WO (1) WO2012172636A1 (fr)

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JP2024018074A (ja) * 2022-07-29 2024-02-08 株式会社日水コン 焼却灰採取機器およびそれを含む焼却灰採取システム

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CN104535452A (zh) * 2014-12-31 2015-04-22 长沙开元仪器股份有限公司 一种自动水分检测方法及自动水分检测装置
CN104483232A (zh) * 2014-12-31 2015-04-01 长沙开元仪器股份有限公司 一种自动水分检测装置
CN104535451A (zh) * 2014-12-31 2015-04-22 长沙开元仪器股份有限公司 一种自动水分检测仪
CN108535301A (zh) * 2018-01-21 2018-09-14 上海环境卫生工程设计院有限公司 一种采用xrf仪器定量测定飞灰中多种重金属含量的方法

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JPS5087675A (fr) * 1973-11-29 1975-07-14
JPS5842659U (ja) * 1981-09-11 1983-03-22 住友金属工業株式会社 水分測定装置
JPS60140751U (ja) * 1984-02-27 1985-09-18 日本鋼管株式会社 高炉内装入物サンプリングランス
JPH06174607A (ja) * 1992-10-09 1994-06-24 Nikkiso Co Ltd 擦り切り装置
JPH0741447U (ja) * 1993-12-27 1995-07-21 理学電機工業株式会社 蛍光ｘ線分析用の粉体試料調製装置
JPH07280710A (ja) * 1994-04-08 1995-10-27 Chubu Electric Power Co Inc 粉体自動採取装置
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JP2002022132A (ja) * 2000-07-06 2002-01-23 Fuji Rozai Kk 燃焼装置修繕方法
JP2005118733A (ja) * 2003-10-20 2005-05-12 Takuma Co Ltd 灰類中の重金属類溶出防止方法と重金属類溶出防止システム
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* Cited by examiner, † Cited by third party
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JP7830258B2 (ja) 2022-07-29 2026-03-16 株式会社日水コン 焼却灰採取機器およびそれを含む焼却灰採取システム

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