JPS60259941A - Measurement for concentration of suspension - Google Patents

Measurement for concentration of suspension

Info

Publication number
JPS60259941A
JPS60259941A JP11630284A JP11630284A JPS60259941A JP S60259941 A JPS60259941 A JP S60259941A JP 11630284 A JP11630284 A JP 11630284A JP 11630284 A JP11630284 A JP 11630284A JP S60259941 A JPS60259941 A JP S60259941A
Authority
JP
Japan
Prior art keywords
suspension
concentration
absorbing liquid
continuously
measure
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
JP11630284A
Other languages
Japanese (ja)
Inventor
Tsunehiro Yamazaki
山崎 恒博
Takashi Haruki
隆 春木
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 JP11630284A priority Critical patent/JPS60259941A/en
Publication of JPS60259941A publication Critical patent/JPS60259941A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/06Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid
    • G01N27/07Construction of measuring vessels; Electrodes therefor

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

PURPOSE:To continuously measure the concentration of solid components in an aqueous solution or a slurry liquid containing a high concentration of suspension by passing the aqueous solution containing the suspension continuously through a passage cell to measure the electric conductivity thereof continuously. CONSTITUTION:In an absorbing liquid of a lime process wet type exhaust gas desulfurizer, changes in the concentration of solid components during the circulation thereof are detected to perform a process control. A part of the absorbing liquid is introduced into a passage type cell 3 through a valve 1 and a pump 2 and passed between platinum electrodes 4 arranged in parallel to measure the specific resistance (electric conductivity) of the absorbing liquid with a vibration capacity potential difference meter 6. An ultrasonic wave generation terminal is provided at a cell inlet 7 and gives the absorbing liquid an ultrasonic wave to agitate. This helps uniform dispersion of slurry to reduce the scatter in the measured value of the electric conductivity even when the passage rate of the absorbing liquid is relatively slow. Thus, the concentration of a suspension can be measured continuously even in the case of the suspension with a high concentration.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は高濃度の@澗物を含む水溶液やスラリ液中の固
形分濃度を連続的に測定する方法に関する。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for continuously measuring the solid content concentration in an aqueous solution or slurry containing a high concentration of solids.

〔従来の技術〕[Conventional technology]

化学プラント、環境装置などでは高濃度の懸濁物を含む
水溶液やスラリ液を取扱い、その濃度を測定しプロセス
制御を行うことが必要になる場合がある。従来このよう
な場合には手分析にて水分や固形分中の個々の成分の分
析を行いプロセス制御していた。また懸濁液や浮濁液の
連続測定方法として光学的手法が用いられ、透過した光
の透過度を測定していた。
In chemical plants, environmental equipment, etc., it is sometimes necessary to handle aqueous solutions and slurry liquids containing highly concentrated suspended substances, and to measure their concentrations and perform process control. Conventionally, in such cases, the process was controlled by manually analyzing the individual components in the water and solid content. Optical methods were also used as a continuous measurement method for suspensions and suspensions, measuring the transmittance of transmitted light.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかしながら、プロセス制御において手分析で水分や固
形分中の個々の成分の分析を行なう方法においては1分
析に長時間を要し、迅速で高精度の対応は困難であり、
なおかつ連続的に測定することは困難であった。丑だ光
の透過度を測定してその濃度をめる方法は、懸濁物の濃
度が高い場合には光が全く透過しないため適用し難い。
However, in the method of manually analyzing individual components in water and solids in process control, it takes a long time for one analysis, making it difficult to respond quickly and with high precision.
Furthermore, it was difficult to measure continuously. The method of determining the concentration by measuring the transmittance of light is difficult to apply when the concentration of suspended matter is high because no light is transmitted.

〔問題点を解決するだめの手段〕[Failure to solve the problem]

すなわち1本発明は懸濁液を含んだ水溶液を連続的に流
通式セルに通し、その電気伝導度を連続的に測定するこ
とを特徴とする懸濁液の濃度測定方法を提供するもので
ある。
Specifically, the present invention provides a method for measuring the concentration of a suspension, which is characterized by continuously passing an aqueous solution containing the suspension through a flow cell and continuously measuring its electrical conductivity. .

本発明は懸濁液を流通式の試料セルに導き。In the present invention, a suspension is introduced into a flow-type sample cell.

その内部に適宜に設置した電極により、流通する懸濁液
の電気伝導度を連続的に測定することによって、a度を
めるものである。
The degree of a is increased by continuously measuring the electrical conductivity of the flowing suspension using electrodes appropriately installed inside the suspension.

〔作 用〕[For production]

この場合、懸濁物の比抵抗値1分散状態及び液中の電解
質の濃度等がその測定値に影響するが、測定系が一定の
場合、懸濁物の比抵抗値及び液中の電解質の濃度は、略
一定と見做すことができるので、その影響は補正するこ
とが可能である。寸だ懸濁物の分散状態はセル中を流通
させることにより、略一定に保持でき固形分の粒径が比
較的大きく流通速度が遅く、均一分散し難い場合には、
更に超音波を通すなどにより攪拌することにより、その
沈降を防ぎ均質に保持できる。
In this case, the specific resistance value of the suspension 1 The dispersion state and the concentration of the electrolyte in the solution will affect the measured value, but if the measurement system is constant, the specific resistance value of the suspension and the electrolyte concentration in the solution will affect the measured value. Since the concentration can be considered to be approximately constant, its influence can be corrected. The dispersion state of the solid suspension can be kept approximately constant by flowing it through the cell.If the particle size of the solid content is relatively large and the flow rate is slow, and uniform dispersion is difficult,
Further, by stirring by passing ultrasonic waves or the like, sedimentation can be prevented and the mixture can be kept homogeneous.

〔実 施 例〕〔Example〕

次に実施例により1本発明による効果を更に詳細に説明
する。石灰法理式排煙脱硫装置の吸収液では循環使用中
の固形分濃度変化を検知し。
Next, the effects of the present invention will be explained in more detail with reference to Examples. The absorption liquid of the lime method flue gas desulfurization equipment detects changes in solid content concentration during circulation.

プロセス制御しているが、そのだめスラリ液中のCa、
、 Soa、 Co3などの濃度を手分析にてめていた
。この吸収液の一部を第1図に示すようにバルブ1及び
ポンプ2を通じて流通式セル3に導き、平行に設置した
白金電極4間を通過させ。
Although the process is controlled, Ca in the slurry liquid,
, Soa, Co3, etc. were determined by manual analysis. As shown in FIG. 1, a part of this absorption liquid was introduced into a flow cell 3 through a valve 1 and a pump 2, and passed between platinum electrodes 4 installed in parallel.

吸収液の比抵抗(電気伝導受)を振動容量電位差計6を
用いて測定した。その結果を第2図に示す。上記実施例
において、セル入ロアの部分に超音波発生端子を設け、
19.5RHz ’lたは27.5 RHz300Wの
超音波を吸収液に与えて攪拌することにより、スラリの
均一分散を助け、吸収液の流通速度が比較的遅い場合で
も、電気伝導度の測度値のばらつきを少くすることがで
きた。
The specific resistance (electrical conduction resistance) of the absorption liquid was measured using a vibrating capacitance potentiometer 6. The results are shown in FIG. In the above embodiment, an ultrasonic generation terminal is provided in the cell-entering lower part,
By applying ultrasonic waves of 19.5 RHZ'l or 27.5 RHZ and 300 W to the absorption liquid and stirring it, it helps uniform dispersion of the slurry, and even when the flow rate of the absorption liquid is relatively slow, the measured value of electrical conductivity can be improved. We were able to reduce the variation in

〔発明の効果〕〔Effect of the invention〕

本発明により、光が全く透過しないような濃度の高い懸
濁液の場合でも懸濁物濃度を連続的に測定でき、吸収液
の管理及びプロセス制御を自動的に高精度で行うことが
可能になった。
The present invention makes it possible to continuously measure the concentration of suspended matter even in the case of highly concentrated suspensions that do not allow any light to pass through, making it possible to automatically manage absorbing liquid and control the process with high precision. became.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の一実施例の例示図、第2図は本発明の
吸収液の固形分濃度と吸収液の電気伝導度の関係を示す
グラフである。 1・・バルブ、2・・ポンプ、3・・流通式セル。 4・・・白金電極、5・・電極支持体、6・・・振動容
量を位xi、7 ・セル入口、8 ・セル出口。 第1図 ↓
FIG. 1 is an illustration of an embodiment of the present invention, and FIG. 2 is a graph showing the relationship between the solid content concentration of the absorbent and the electrical conductivity of the absorbent according to the present invention. 1. Valve, 2. Pump, 3. Flow cell. 4... Platinum electrode, 5... Electrode support, 6... Vibration capacity xi, 7 - Cell inlet, 8 - Cell outlet. Figure 1↓

Claims (1)

【特許請求の範囲】[Claims] 懸濁液を含んだ水溶液を連続的に流通式セルに通し、そ
の電気伝導度を連続的に測定することを特徴とする懸濁
液の濃度測定方法。
A method for measuring the concentration of a suspension, characterized by continuously passing an aqueous solution containing the suspension through a flow cell and continuously measuring its electrical conductivity.
JP11630284A 1984-06-06 1984-06-06 Measurement for concentration of suspension Pending JPS60259941A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11630284A JPS60259941A (en) 1984-06-06 1984-06-06 Measurement for concentration of suspension

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11630284A JPS60259941A (en) 1984-06-06 1984-06-06 Measurement for concentration of suspension

Publications (1)

Publication Number Publication Date
JPS60259941A true JPS60259941A (en) 1985-12-23

Family

ID=14683648

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11630284A Pending JPS60259941A (en) 1984-06-06 1984-06-06 Measurement for concentration of suspension

Country Status (1)

Country Link
JP (1) JPS60259941A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005098969A (en) * 2003-08-26 2005-04-14 Kochi Univ Of Technology Method and instrument for measuring iron sulfide content in solid component
JP2006023148A (en) * 2004-07-07 2006-01-26 Dkk Toa Corp Chlorine demand amount measuring instrument, water quality control system, chlorine demand amount measuring method and water quality control method
JP2014002069A (en) * 2012-06-19 2014-01-09 Horiba Advanced Techno Co Ltd Device for measuring activated carbon concentration related parameter
EP2564922A3 (en) * 2011-08-29 2014-12-03 Telsonic Holding AG Device and sonotrode for process technology
CN114487027A (en) * 2021-12-27 2022-05-13 无锡赞匠生物科技有限公司 Method for measuring total solid shape in grain thick slurry through conductivity

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005098969A (en) * 2003-08-26 2005-04-14 Kochi Univ Of Technology Method and instrument for measuring iron sulfide content in solid component
JP4608612B2 (en) * 2003-08-26 2011-01-12 公立大学法人高知工科大学 Method and apparatus for measuring iron sulfide content in solid components
JP2006023148A (en) * 2004-07-07 2006-01-26 Dkk Toa Corp Chlorine demand amount measuring instrument, water quality control system, chlorine demand amount measuring method and water quality control method
JP4516364B2 (en) * 2004-07-07 2010-08-04 東亜ディーケーケー株式会社 Chlorine demand measuring device, water quality management system, chlorine demand measuring method, and water quality management method
EP2564922A3 (en) * 2011-08-29 2014-12-03 Telsonic Holding AG Device and sonotrode for process technology
JP2014002069A (en) * 2012-06-19 2014-01-09 Horiba Advanced Techno Co Ltd Device for measuring activated carbon concentration related parameter
CN114487027A (en) * 2021-12-27 2022-05-13 无锡赞匠生物科技有限公司 Method for measuring total solid shape in grain thick slurry through conductivity

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