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JPS5655843A - Denitrifying device - Google Patents

Denitrifying device

Info

Publication number
JPS5655843A
JPS5655843A JP13181979A JP13181979A JPS5655843A JP S5655843 A JPS5655843 A JP S5655843A JP 13181979 A JP13181979 A JP 13181979A JP 13181979 A JP13181979 A JP 13181979A JP S5655843 A JPS5655843 A JP S5655843A
Authority
JP
Japan
Prior art keywords
point
produced
heating
color
brightness meter
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
JP13181979A
Other languages
Japanese (ja)
Inventor
Koichi Matsumoto
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP13181979A priority Critical patent/JPS5655843A/en
Publication of JPS5655843A publication Critical patent/JPS5655843A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
    • G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Plasma & Fusion (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)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

PURPOSE:To perform appropriate thermal control and obtain the aimed denitrified substance of excellent purity by providinga color brightness meter classifying the change in form of a chemical material by color in a device wherein the chemical material is denitrified by heating. CONSTITUTION:The color brightness meter 21 is provided in a container 11 wherein a vessel 12 filled with uranyl nitrate solution 13 is heated by a heater 22 to dissolve nitric acid as as to remove NOx then produced and produce UO3. For heating on said occasion, the microwave heating by a microwave waveguide 23 may also be applied. The temperature of the solution 13 first rises up to a point A, evaporation continues up to a point B, and the condensate is yellow from the point B to C. In the sphere from the point C to D, NOx is produced through dissolution of the nitric acid and then the aimed material UO3 is produced. After the point D, however, black U3O8 is produced. Therefore, so as to reduce U3O8 and increase UO3 in the solution as much as possible, the color change after the point B is monitored 32 by the color brightness meter 21, and, when the black part is detected in the brown, the thermal control 31 and then the control by heating 33 are applied immediately by a controller 30 provided.
JP13181979A 1979-10-15 1979-10-15 Denitrifying device Pending JPS5655843A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13181979A JPS5655843A (en) 1979-10-15 1979-10-15 Denitrifying device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13181979A JPS5655843A (en) 1979-10-15 1979-10-15 Denitrifying device

Publications (1)

Publication Number Publication Date
JPS5655843A true JPS5655843A (en) 1981-05-16

Family

ID=15066834

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13181979A Pending JPS5655843A (en) 1979-10-15 1979-10-15 Denitrifying device

Country Status (1)

Country Link
JP (1) JPS5655843A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6279394A (en) * 1985-10-01 1987-04-11 動力炉・核燃料開発事業団 Microwave heating denitrating method and device
KR100502191B1 (en) * 1998-12-24 2005-10-19 재단법인 포항산업과학연구원 Simultaneous Measurement of Nitrogen Consumption and Gas Emissions in Denitrification by Microorganisms
JP2011088766A (en) * 2009-10-20 2011-05-06 Japan Atomic Energy Agency Method for producing metal oxide particle by hybrid heating method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6279394A (en) * 1985-10-01 1987-04-11 動力炉・核燃料開発事業団 Microwave heating denitrating method and device
KR100502191B1 (en) * 1998-12-24 2005-10-19 재단법인 포항산업과학연구원 Simultaneous Measurement of Nitrogen Consumption and Gas Emissions in Denitrification by Microorganisms
JP2011088766A (en) * 2009-10-20 2011-05-06 Japan Atomic Energy Agency Method for producing metal oxide particle by hybrid heating method

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