KR102360529B1 - 부식산화막의 제염방법 - Google Patents
부식산화막의 제염방법 Download PDFInfo
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- KR102360529B1 KR102360529B1 KR1020200036610A KR20200036610A KR102360529B1 KR 102360529 B1 KR102360529 B1 KR 102360529B1 KR 1020200036610 A KR1020200036610 A KR 1020200036610A KR 20200036610 A KR20200036610 A KR 20200036610A KR 102360529 B1 KR102360529 B1 KR 102360529B1
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- Prior art keywords
- decontamination
- process water
- oxide film
- decontamination process
- corrosive
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/001—Decontamination of contaminated objects, apparatus, clothes, food; Preventing contamination thereof
- G21F9/002—Decontamination of the surface of objects with chemical or electrochemical processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D1/00—Details of nuclear power plant
- G21D1/003—Nuclear facilities decommissioning arrangements
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/28—Treating solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
- C02F1/004—Processes for the treatment of water whereby the filtration technique is of importance using large scale industrial sized filters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
- C02F2103/023—Water in cooling circuits
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plasma & Fusion (AREA)
- Food Science & Technology (AREA)
- Inorganic Chemistry (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
- Detergent Compositions (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
Description
구분 | 몰비 (Ba(OH)2/SO4 2-) | pH | 농도(ppm) | |||
하이드라진 | 황산이온 | 철이온 | 구리이온 | |||
비교예 1 | 0 | 2.61 | 1,010 | 2,600 | 300 | 31 |
비교예 2 | 0.45 | 8.17 | 1,000 | 1,460 | 1.843 | 0.282 |
실시예 1 | 0.5 | 8.27 | 1,020 | 1,310 | 0.714 | 0.322 |
실시예 2 | 0.55 | 8.36 | 1,000 | 1,180 | 0.536 | 0.216 |
실시예 3 | 0.6 | 8.63 | 1,030 | 1,020 | 0.332 | 0.150 |
실시예 4 | 0.7 | 9.31 | 1,010 | 790 | 0.150 | 0.046 |
비교예 3 | 0.75 | 9.62 | 1,010 | 640 | 0.121 | 0.038 |
구분 | 몰비 (Ba(OH)2/SO4 2-) |
주입농도(ppm) | ||
하이드라진 | 황산이온 | 구리이온 | ||
실시예 1 | 0.5 | 600 | 1,290 | 31 |
실시예 2 | 0.55 | 600 | 1,420 | 31 |
실시예 3 | 0.6 | 600 | 1,580 | 31 |
실시예 4 | 0.7 | 600 | 1,810 | 31 |
Claims (10)
- (a) 황산(H2SO4), 하이드라진(N2H4), 및 황산구리(CuSO4)를 포함하는 제염공정수를 공정 계통(pipe line system)에 적용하여 부식산화막을 제염하는 단계;
(b) 부식산화막을 제염한 제염공정수에 Ba(OH)2를 혼합하여 pH를 8.2 내지 9.4로 조절하여 침전 반응을 수행하는 단계;
(c) 침전 반응을 수행한 제염공정수를 여과하여 불용성 물질을 제거하는 단계; 및
(d) 불용성 물질이 제거된 제염공정수를 (a) 단계의 제염공정수로 재사용하는 단계를 포함하는, 부식산화막의 제염방법.
- 제1항에 있어서,
상기 공정 계통은 탄소강 재질의 계통인, 부식산화막의 제염방법.
- 제1항에 있어서,
상기 공정 계통은 중수로 냉각 계통인, 부식산화막의 제염방법.
- 제1항에 있어서,
상기 부식산화막은 철산화물을 포함하는, 부식산화막의 제염방법.
- 제1항에 있어서,
상기 부식산화막은 50-75㎛의 두께인, 부식산화막의 제염방법.
- 제1항에 있어서,
상기 (a) 단계의 제염공정수는 황산(H2SO4)을 25-32mM, 하이드라진(N2H4)을 30-70mM, 및 황산구리(CuSO4)를 0.4-0.6mM의 농도로 포함하는, 부식산화막의 제염방법.
- 제1항에 있어서,
상기 (a) 단계는 93-97℃의 온도에서, 6 내지 10시간 동안 수행되는, 부식 산화막의 제염방법.
- 제1항에 있어서,
상기 (b) 단계의 Ba(OH)2는 상기 제염공정수 내의 황산 이온의 50 내지 70%의 몰 수가 되도록 혼합하는 것인, 부식 산화막의 제염방법.
- 제1항에 있어서,
상기 (d) 단계는 불용성 물질이 제거된 제염공정수에 황산(H2SO4), 하이드라진(N2H4), 및 황산구리(CuSO4)를 혼합하여 제염공정수를 재생하여 수행되는, 부식 산화막의 제염방법.
- 제1항에 있어서,
상기 (a) 단계 내지 (d) 단계를 공정수의 배출 없이 2 내지 20회 반복하여 수행하는, 부식산화막의 제염방법.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020200036610A KR102360529B1 (ko) | 2020-03-26 | 2020-03-26 | 부식산화막의 제염방법 |
CA3099352A CA3099352C (en) | 2020-03-26 | 2020-11-16 | Method for decontaminating oxide layer |
FR2013303A FR3108771B1 (fr) | 2020-03-26 | 2020-12-15 | Procédé de décontamination de couche d'oxyde |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020200036610A KR102360529B1 (ko) | 2020-03-26 | 2020-03-26 | 부식산화막의 제염방법 |
Publications (2)
Publication Number | Publication Date |
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KR20210120210A KR20210120210A (ko) | 2021-10-07 |
KR102360529B1 true KR102360529B1 (ko) | 2022-02-11 |
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Application Number | Title | Priority Date | Filing Date |
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KR1020200036610A Active KR102360529B1 (ko) | 2020-03-26 | 2020-03-26 | 부식산화막의 제염방법 |
Country Status (3)
Country | Link |
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KR (1) | KR102360529B1 (ko) |
CA (1) | CA3099352C (ko) |
FR (1) | FR3108771B1 (ko) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014001963A (ja) * | 2012-06-15 | 2014-01-09 | Subaru Enterprise Co Ltd | 除染水処理用凝集沈殿剤及びそれを用いた除染方法並びに除染システム |
JP2018063246A (ja) | 2016-10-12 | 2018-04-19 | コリア アトミック エナジー リサーチ インスティテュート | 放射性廃棄物を大幅に削減することができる除染方法およびそのためのキット |
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2020
- 2020-03-26 KR KR1020200036610A patent/KR102360529B1/ko active Active
- 2020-11-16 CA CA3099352A patent/CA3099352C/en active Active
- 2020-12-15 FR FR2013303A patent/FR3108771B1/fr active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014001963A (ja) * | 2012-06-15 | 2014-01-09 | Subaru Enterprise Co Ltd | 除染水処理用凝集沈殿剤及びそれを用いた除染方法並びに除染システム |
JP2018063246A (ja) | 2016-10-12 | 2018-04-19 | コリア アトミック エナジー リサーチ インスティテュート | 放射性廃棄物を大幅に削減することができる除染方法およびそのためのキット |
Also Published As
Publication number | Publication date |
---|---|
KR20210120210A (ko) | 2021-10-07 |
FR3108771A1 (fr) | 2021-10-01 |
CA3099352C (en) | 2023-01-10 |
FR3108771B1 (fr) | 2023-04-14 |
CA3099352A1 (en) | 2021-09-26 |
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