JP7472622B2 - ボイラの化学洗浄方法 - Google Patents
ボイラの化学洗浄方法 Download PDFInfo
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- JP7472622B2 JP7472622B2 JP2020075529A JP2020075529A JP7472622B2 JP 7472622 B2 JP7472622 B2 JP 7472622B2 JP 2020075529 A JP2020075529 A JP 2020075529A JP 2020075529 A JP2020075529 A JP 2020075529A JP 7472622 B2 JP7472622 B2 JP 7472622B2
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- water
- boiler
- pipe
- chemical cleaning
- steam
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- 238000004140 cleaning Methods 0.000 title claims description 49
- 239000000126 substance Substances 0.000 title claims description 32
- 238000000034 method Methods 0.000 title claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 76
- 238000007664 blowing Methods 0.000 claims description 7
- 238000007689 inspection Methods 0.000 claims description 6
- 239000003245 coal Substances 0.000 claims description 4
- 238000004904 shortening Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 17
- 238000003466 welding Methods 0.000 description 8
- 230000002093 peripheral effect Effects 0.000 description 7
- 238000011144 upstream manufacturing Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Images
Landscapes
- Cleaning By Liquid Or Steam (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Description
2 節炭器
9 火炉
20 気水分離器
21 ドレンタンク
22 循環配管
24 再循環ポンプ
26 仮設配管
26A,26B 耐圧バルブ
26W 溶接
27 仮設再循環ポンプ
40,50,60 過熱器
61 主蒸気管
62 主塞止弁
Claims (2)
- 給水管によって給水が導入される節炭器と、該節炭器からの水が導入される壁管を有する火炉と、該壁管が連なる気水分離器と、気水分離器からの蒸気を過熱する過熱器と、気水分離器からの水を前記給水管に循環させる循環配管とを有するボイラを化学洗浄する方法であって、該気水分離器及びそれよりも火炉側を化学洗浄する方法において、
該循環配管及び前記給水管にそれぞれ耐圧バルブを設置しておき、
化学洗浄時に該耐圧バルブ同士を循環ポンプを備えた仮設配管で接続し、
缶水の温度が運転中温度から放冷されて低下する過程で、化学洗浄に適した温度まで低下した時点で化学洗浄工程に移行し、
ボイラ運転時の缶水を化学洗浄に利用し、全ブロー及び水張りに要する時間を削減し、工程短縮させることを特徴とするボイラの化学洗浄方法。 - 前記耐圧バルブを、化学洗浄前の定期検査時に設置することを特徴とする請求項1のボイラの化学洗浄方法。
Priority Applications (1)
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JP2020075529A JP7472622B2 (ja) | 2020-04-21 | 2020-04-21 | ボイラの化学洗浄方法 |
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JP2020075529A JP7472622B2 (ja) | 2020-04-21 | 2020-04-21 | ボイラの化学洗浄方法 |
Publications (2)
Publication Number | Publication Date |
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JP2021173440A JP2021173440A (ja) | 2021-11-01 |
JP7472622B2 true JP7472622B2 (ja) | 2024-04-23 |
Family
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JP2020075529A Active JP7472622B2 (ja) | 2020-04-21 | 2020-04-21 | ボイラの化学洗浄方法 |
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JP (1) | JP7472622B2 (ja) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004028195A (ja) | 2002-06-25 | 2004-01-29 | Toshiba Corp | 蒸気弁 |
JP2015230150A (ja) | 2014-06-06 | 2015-12-21 | 栗田エンジニアリング株式会社 | ボイラの化学洗浄方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5546350A (en) * | 1978-09-29 | 1980-04-01 | Mitsubishi Heavy Ind Ltd | Method of circulating chemical washing liquid through forced circulation boiler |
JPS63180001A (ja) * | 1987-01-22 | 1988-07-25 | 三菱重工業株式会社 | ボイラの洗浄方法 |
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2020
- 2020-04-21 JP JP2020075529A patent/JP7472622B2/ja active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004028195A (ja) | 2002-06-25 | 2004-01-29 | Toshiba Corp | 蒸気弁 |
JP2015230150A (ja) | 2014-06-06 | 2015-12-21 | 栗田エンジニアリング株式会社 | ボイラの化学洗浄方法 |
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