KR101102525B1 - 전기화학적 수화학 기술을 이용한 고온 냉각수의 화학상태 감지방법 - Google Patents
전기화학적 수화학 기술을 이용한 고온 냉각수의 화학상태 감지방법 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000000498 cooling water Substances 0.000 title claims abstract description 27
- 239000000126 substance Substances 0.000 title abstract description 18
- 238000005516 engineering process Methods 0.000 title description 7
- 239000001257 hydrogen Substances 0.000 claims abstract description 43
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 43
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 28
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 25
- 230000003647 oxidation Effects 0.000 claims abstract description 24
- 239000010970 precious metal Substances 0.000 claims abstract description 14
- 239000000460 chlorine Substances 0.000 claims abstract description 13
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 12
- -1 chlorine ions Chemical class 0.000 claims abstract description 11
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 11
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 150000004706 metal oxides Chemical class 0.000 claims description 7
- 229910000510 noble metal Inorganic materials 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 6
- 239000010931 gold Substances 0.000 claims description 4
- 238000006479 redox reaction Methods 0.000 claims description 4
- 239000010948 rhodium Substances 0.000 claims description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910001882 dioxygen Inorganic materials 0.000 claims description 3
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 229910052741 iridium Inorganic materials 0.000 claims description 2
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052755 nonmetal Inorganic materials 0.000 claims description 2
- 229910052763 palladium Inorganic materials 0.000 claims description 2
- 229910052702 rhenium Inorganic materials 0.000 claims description 2
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 claims description 2
- 229910052703 rhodium Inorganic materials 0.000 claims description 2
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 2
- 229910052707 ruthenium Inorganic materials 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 abstract description 14
- 150000002431 hydrogen Chemical class 0.000 abstract description 6
- 238000003487 electrochemical reaction Methods 0.000 abstract description 3
- 230000005764 inhibitory process Effects 0.000 abstract description 2
- 230000005518 electrochemistry Effects 0.000 abstract 1
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 24
- 230000007797 corrosion Effects 0.000 description 16
- 238000005260 corrosion Methods 0.000 description 16
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- MUMZUERVLWJKNR-UHFFFAOYSA-N oxoplatinum Chemical compound [Pt]=O MUMZUERVLWJKNR-UHFFFAOYSA-N 0.000 description 4
- 229910003446 platinum oxide Inorganic materials 0.000 description 4
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 3
- 239000004327 boric acid Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910001092 metal group alloy Inorganic materials 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229910021607 Silver chloride Inorganic materials 0.000 description 1
- RVWKVYGFLYAWBZ-UHFFFAOYSA-M [Li+].[OH-].OB(O)O Chemical compound [Li+].[OH-].OB(O)O RVWKVYGFLYAWBZ-UHFFFAOYSA-M 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000013626 chemical specie Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000027756 respiratory electron transport chain Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000011540 sensing material Substances 0.000 description 1
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/02—Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/4166—Systems measuring a particular property of an electrolyte
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
- G01N33/1806—Biological oxygen demand [BOD] or chemical oxygen demand [COD]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
- G01N33/182—Specific anions in water
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Food Science & Technology (AREA)
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- Biodiversity & Conservation Biology (AREA)
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- Environmental & Geological Engineering (AREA)
- Environmental Sciences (AREA)
- Biomedical Technology (AREA)
- Emergency Medicine (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
Description
수화학상태 | 종래방법 (Redox전위) |
본 발명의 감지방법 | ||
H2 확산지배 산화전류 | PtO2 안정영역 전류 및 redox 전위 | |||
기준전위 | redox 전위 | |||
적용 온도조건 |
고온, 저온 | 고온 | 고온 | 고온, 저온 |
정상상태 | 기준 (Redox 전위) |
영향없음 | 기준전류 (50∼500㎂㎝-2 ) |
기준 PtO2 안정전위 |
염소이온유입 | 변화없음 | 영향미미 | 전류증가 (확산지배전류) |
변화없음 |
pH 증가 | 전위이동 (cathodic) |
영향미미 | 전류 미소감소 | 전위이동 (cathodic) |
pH 감소 | 전위이동 (anodic) |
영향미미 | 전류 미소증가 | 전위이동 (anodic) |
용존수소 증가 | 전위이동 (cathodic) |
증가 | 전류 미소증가 | 전위이동 (cathodic) |
용존수소 감소 | 전위이동 (anodic) |
감소 | 전류 미소감소 | 전위이동 (anodic) |
Claims (10)
- 귀금속 전극과;대응전극; 및전위 인가와 전류 측정장치;를 포함하는 전기화학적 수화학 기술을 이용하여 고온 냉각수 내의 염소이온 유무, pH 변화 및 용존수소량 변화를 감지하는 방법.
- 제1항에 있어서, 상기 귀금속 전극은 백금(Pt), 금(Au), 레늄(Re), 루테늄(Ru), 로듐(Rh), 팔라듐(Pd), 은(Ag) 및 이리듐(Ir)으로 이루어지는 군으로부터 선택되는 1종 또는 이들의 합금인 것을 특징으로 하는 고온 냉각수 내의 염소이온 유무, pH 변화 및 용존수소량 변화를 감지하는 방법.
- 제2항에 있어서, 상기 귀금속 전극은 백금(Pt)을 포함하는 것을 특징으로 하는 고온 냉각수 내의 염소이온 유무, pH 변화 및 용존수소량 변화를 감지하는 방법.
- 제1항에 있어서, 상기 대응전극은 금속 또는 전도성 비금속인 것을 특징으로 하는 고온 냉각수 내의 염소이온 유무, pH 변화 및 용존수소량 변화를 감지하는 방법.
- 제1항에 있어서, 상기 대응전극은 고온 냉각수가 흐르는 배관자체인 것을 특징으로 하는 고온 냉각수 내의 염소이온 유무, pH 변화 및 용존수소량 변화를 감지하는 방법.
- 제1항에 있어서, 상기 귀금속 전극에 인가되는 산화전위는 물이 산소기체로 산화되는 전위를 기준으로, 산화환원 전위방향으로 각각 ± 700 mV 전위영역인 것을 특징으로 하는 고온 냉각수 내의 염소이온 유무, pH 변화 및 용존수소량 변화를 감지하는 방법.
- 삭제
- 제1항에 있어서, 상기 고온 냉각수 내의 염소이온 유무는 염소이온이 센서표면의 귀금속 산화물의 치밀도에 미치는 정도를 산화전류의 변화로 감지하여 측정하는 것을 특징으로 하는 고온 냉각수 내의 염소이온 유무, pH 변화 및 용존수소량 변화를 감지하는 방법.
- 제1항에 있어서, 상기 pH의 변화는 pH가 센서표면의 귀금속 산화물의 치밀도와 산화환원 반응에 미치는 정도를 산화전류의 변화로 감지하여 측정하는 것을 특징으로 하는 고온 냉각수 내의 염소이온 유무, pH 변화 및 용존수소량 변화를 감지하는 방법.
- 제1항에 있어서, 상기 용존수소량 변화는 용존수소가 센서표면의 귀금속 산화물의 치밀도 변화로부터 받는 영향을 산화전류의 변화로 감지하여 측정하는 것을 특징으로 하는 고온 냉각수 내의 염소이온 유무, pH 변화 및 용존수소량 변화를 감지하는 방법.
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KR101239884B1 (ko) * | 2010-09-30 | 2013-03-06 | 한국원자력연구원 | 고온 수용액 내 불순물 감지방법 및 이를 위한 불순물 감지 장치 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10142219A (ja) * | 1996-11-15 | 1998-05-29 | Mitsubishi Chem Corp | 循環冷却水の水質管理方法 |
KR19990067672A (ko) * | 1995-11-16 | 1999-08-25 | 브라이언 디어 | 전기화학적 방법 |
KR19990083948A (ko) * | 1999-09-01 | 1999-12-06 | 최돈수 | 유기 전기발광물질의 전기 화학적 분석법 |
KR20030053256A (ko) * | 2001-12-22 | 2003-06-28 | 재단법인 포항산업과학연구원 | 전기전도도 미터를 이용한 개방순환형 냉각수계의염소이온 농도 관리방법 |
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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KR19990067672A (ko) * | 1995-11-16 | 1999-08-25 | 브라이언 디어 | 전기화학적 방법 |
JPH10142219A (ja) * | 1996-11-15 | 1998-05-29 | Mitsubishi Chem Corp | 循環冷却水の水質管理方法 |
KR19990083948A (ko) * | 1999-09-01 | 1999-12-06 | 최돈수 | 유기 전기발광물질의 전기 화학적 분석법 |
KR20030053256A (ko) * | 2001-12-22 | 2003-06-28 | 재단법인 포항산업과학연구원 | 전기전도도 미터를 이용한 개방순환형 냉각수계의염소이온 농도 관리방법 |
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