JP2014238412A - 沈積スラッジの物理化学的洗浄方法 - Google Patents
沈積スラッジの物理化学的洗浄方法 Download PDFInfo
- Publication number
- JP2014238412A JP2014238412A JP2014152760A JP2014152760A JP2014238412A JP 2014238412 A JP2014238412 A JP 2014238412A JP 2014152760 A JP2014152760 A JP 2014152760A JP 2014152760 A JP2014152760 A JP 2014152760A JP 2014238412 A JP2014238412 A JP 2014238412A
- Authority
- JP
- Japan
- Prior art keywords
- cleaning
- sludge
- cleaning liquid
- physicochemical
- temperature
- 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.)
- Granted
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- 238000004140 cleaning Methods 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 39
- 239000010802 sludge Substances 0.000 title claims abstract description 39
- 230000008021 deposition Effects 0.000 title abstract 2
- 239000000126 substance Substances 0.000 title description 6
- 239000007788 liquid Substances 0.000 claims abstract description 45
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims abstract description 13
- 230000001737 promoting effect Effects 0.000 claims abstract description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 48
- 229910052757 nitrogen Inorganic materials 0.000 claims description 26
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 12
- 235000011089 carbon dioxide Nutrition 0.000 claims description 12
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 claims 3
- 239000013049 sediment Substances 0.000 claims 2
- 238000004062 sedimentation Methods 0.000 claims 1
- 239000013077 target material Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000002791 soaking Methods 0.000 description 3
- 229910021642 ultra pure water Inorganic materials 0.000 description 3
- 239000012498 ultrapure water Substances 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000003621 irrigation water Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 239000013626 chemical specie Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001983 electron spin resonance imaging Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
- F22B37/483—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers specially adapted for nuclear steam generators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/143—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- High Energy & Nuclear Physics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Hydrology & Water Resources (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Cleaning In General (AREA)
- Cleaning Or Drying Semiconductors (AREA)
Abstract
【解決手段】N2H4と、ETA(モノエタノールアミン)及びNH3から選択される少なくとも一種とを含む洗浄液に、処理対象物を浸漬させる。次いで、洗浄液の温度と圧力を変化させ、洗浄液に気泡を発生させる。さらに、洗浄液の温度を上昇させ、スラッジの除去を促進する。洗浄液のETA又はNH3の量は、洗浄液のpHを7.5〜9.5とするように調整され、洗浄液のN2H4の濃度は、20ppb〜0.1%である。
【選択図】図1
Description
スラッジを除去しようとする部位を洗浄液にて浸漬させるソーキング(soaking)工程(第1のステップ)と、
洗浄液に気体窒素と、液体窒素、及びドライアイスからなる群より選択される少なくとも一種を注入して温度と圧力を変化させ、気泡を発生させる温度及び圧力の変化と気泡発生工程(第2のステップ)、及び
洗浄部位の温度を上昇させ、スラッジの除去を促進する加温工程(第3のステップ)と、を含む。また、状況に応じては、上記工程を全て実行したり、一部の工程だけを繰り返し実行したりしてもよい。
2:洗浄液貯蔵タンク
3:気体窒素または液体窒素(または、ドライアイス)タンク
4:スラッジ
5:ステンレス内部配管
6:供給ポンプ(Injection Pump)
7:逃がし弁
8:ソレノイド弁
Claims (9)
- スラッジを除去しようとする対象を洗浄液にて浸漬させる第1のステップと、
前記洗浄液の温度と圧力を変化させ、洗浄液に気泡を発生させる第2のステップ、及び
温度を上昇させ、スラッジの除去を促進する第3のステップと、
を含む沈積スラッジの物理化学的洗浄方法。 - スラッジは、原子力発電所において生成されるスラッジであることを特徴とする請求項1に記載の沈積スラッジの物理化学的洗浄方法。
- 洗浄液は、水、ETA(monoethanolamine)、NH3、EDTA(ethylenediaminetetraacetic acid)、DTPA(Diethylene triamine pentaacetic acid)、及びN2H2からなる群より選択される少なくとも一種を含むことを特徴とする請求項1に記載の沈積スラッジの物理化学的洗浄方法。
- 第2のステップは、洗浄液に気体窒素、液体窒素、及びドライアイスからなる群より選択される少なくとも一種を注入して温度と圧力を変化させ、気泡を発生させることを特徴とする請求項1に記載の沈積スラッジの物理化学的洗浄方法。
- 第1のステップは、洗浄しようとする対象を洗浄液にて浸漬した後、6〜48時間にかけて50〜95℃に保持することを特徴とする請求項1に記載の沈積スラッジの物理化学的洗浄方法。
- 第2のステップは、6〜24時間にかけて実行され、変化される温度の範囲は25〜95℃、変化される圧力の範囲は2〜20気圧であることを特徴とする請求項1に記載の沈積スラッジの物理化学的洗浄方法。
- 第3のステップの温度は、50〜95℃であることを特徴とする請求項1に記載の沈積スラッジの物理化学的洗浄方法。
- 前記洗浄液は、pH8〜10.5に調節される量のETAまたはNH3;及び20ppb〜0.1%のN2H4を含む請求項1に記載の沈積スラッジの物理化学的洗浄方法。
- 前記洗浄液は、pH7.5〜9.5に調節される量のETAまたはNH3;1ppm〜2%のEDTA、DTPA、またはEDTAとDTPAとの混合物;及び20ppb〜0.1%のN2H4を含む請求項1に記載の沈積スラッジの物理化学的洗浄方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020100093524A KR101181584B1 (ko) | 2010-09-28 | 2010-09-28 | 침적 슬러지의 물리화학적 세정방법 |
KR10-2010-0093524 | 2010-09-28 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2011203492A Division JP2012073247A (ja) | 2010-09-28 | 2011-09-16 | 沈積スラッジの物理化学的洗浄方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2014238412A true JP2014238412A (ja) | 2014-12-18 |
JP5806766B2 JP5806766B2 (ja) | 2015-11-10 |
Family
ID=45869373
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2011203492A Pending JP2012073247A (ja) | 2010-09-28 | 2011-09-16 | 沈積スラッジの物理化学的洗浄方法 |
JP2014152760A Active JP5806766B2 (ja) | 2010-09-28 | 2014-07-28 | 沈積スラッジの物理化学的洗浄方法 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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JP2011203492A Pending JP2012073247A (ja) | 2010-09-28 | 2011-09-16 | 沈積スラッジの物理化学的洗浄方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20120073597A1 (ja) |
JP (2) | JP2012073247A (ja) |
KR (1) | KR101181584B1 (ja) |
CN (1) | CN102553857B (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105091661A (zh) * | 2015-08-06 | 2015-11-25 | 中国石油化工股份有限公司 | 污水换热器的清洗方法及污水换热系统 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10293299B2 (en) * | 2013-10-30 | 2019-05-21 | Dow Global Technologies Llc | Hybrid solvent formulations for total organic sulfur removal and total acidic gas removal |
JP6304629B2 (ja) * | 2014-05-20 | 2018-04-04 | 国立研究開発法人日本原子力研究開発機構 | 水管ボイラ内の堆積物除去方法及び装置 |
CN110469839B (zh) * | 2019-08-28 | 2020-10-02 | 南京市晨枭软件技术有限公司 | 一种用于工业锅炉给水控制回路软件的节能装置 |
Citations (12)
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US514197A (en) * | 1894-02-06 | Digester | ||
JPS57117379A (en) * | 1981-01-09 | 1982-07-21 | Tokyo Shibaura Electric Co | Method of washing piping with water |
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2010
- 2010-09-28 KR KR1020100093524A patent/KR101181584B1/ko active IP Right Grant
-
2011
- 2011-04-05 US US13/080,092 patent/US20120073597A1/en not_active Abandoned
- 2011-09-16 JP JP2011203492A patent/JP2012073247A/ja active Pending
- 2011-09-26 CN CN201110293645.5A patent/CN102553857B/zh active Active
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2014
- 2014-07-28 JP JP2014152760A patent/JP5806766B2/ja active Active
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CN105091661A (zh) * | 2015-08-06 | 2015-11-25 | 中国石油化工股份有限公司 | 污水换热器的清洗方法及污水换热系统 |
Also Published As
Publication number | Publication date |
---|---|
JP5806766B2 (ja) | 2015-11-10 |
JP2012073247A (ja) | 2012-04-12 |
CN102553857A (zh) | 2012-07-11 |
KR20120032089A (ko) | 2012-04-05 |
CN102553857B (zh) | 2015-04-08 |
KR101181584B1 (ko) | 2012-09-10 |
US20120073597A1 (en) | 2012-03-29 |
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