JP6857388B2 - 水銀測定装置 - Google Patents
水銀測定装置 Download PDFInfo
- Publication number
- JP6857388B2 JP6857388B2 JP2017014567A JP2017014567A JP6857388B2 JP 6857388 B2 JP6857388 B2 JP 6857388B2 JP 2017014567 A JP2017014567 A JP 2017014567A JP 2017014567 A JP2017014567 A JP 2017014567A JP 6857388 B2 JP6857388 B2 JP 6857388B2
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- Prior art keywords
- gas
- calibration
- mercury
- dilution
- sample gas
- 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.)
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- 229910052753 mercury Inorganic materials 0.000 title claims description 46
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 title claims description 45
- 239000000523 sample Substances 0.000 claims description 62
- 239000000428 dust Substances 0.000 claims description 34
- 239000003054 catalyst Substances 0.000 claims description 25
- 238000010790 dilution Methods 0.000 claims description 22
- 239000012895 dilution Substances 0.000 claims description 22
- 238000001514 detection method Methods 0.000 claims description 13
- 238000005070 sampling Methods 0.000 claims description 13
- 230000035945 sensitivity Effects 0.000 claims description 7
- 239000004071 soot Substances 0.000 claims description 7
- 230000006866 deterioration Effects 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 118
- 230000000052 comparative effect Effects 0.000 description 6
- 238000007865 diluting Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 239000002699 waste material Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012717 electrostatic precipitator Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 229910001200 Ferrotitanium Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000002795 fluorescence method Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- -1 mercury ions Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Images
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- Sampling And Sample Adjustment (AREA)
Description
3 導入管
3a 導入口
4 ダストフィルター
5 試料ガス導入部
6 乾式触媒
8 プローブユニット
9 検出部
10 希釈ガス発生部
11 希釈ガス流路
12 校正ガス発生部
13 校正ガス流路
S 試料ガスの流れ方向
Claims (1)
- 煙道内を流れる試料ガス中の水銀濃度を連続測定する水銀測定装置であって、
前記煙道内に挿入されて少なくとも先端側の部分が試料ガスの流れ方向に平行に延び、先端の導入口を試料ガスの流れ方向下流側に向けられた導入管、および、前記導入口に設けられたダストフィルターを有する試料ガス導入部と、
乾式触媒を有して前記試料ガス導入部からの試料ガスに前処理を行ってサンプリングガスとするプローブユニットと、
ポンプおよびマスフローコントローラーを有し、前記プローブユニットからのサンプリングガスを所定の流量で吸引して水銀濃度を連続測定する検出部と、
ポンプおよびマスフローコントローラーを有し、希釈ガスを所定の流量で発生する希釈ガス発生部と、
前記希釈ガス発生部からの希釈ガスを前記ダストフィルターと前記乾式触媒との間の試料ガスの流路に導入する希釈ガス流路と、
所定の基準となる濃度で水銀を含んだ空気である校正ガスを所定の流量で発生する校正ガス発生部と、
前記校正ガス発生部からの校正ガスを前記希釈ガス流路に導入する校正ガス流路とを備え、
前記検出部が、前記希釈ガス発生部からの希釈ガスにより前記乾式触媒の前で希釈される試料ガスについて、測定したサンプリングガスの濃度に希釈倍率を乗じて、求めるべき試料ガスの濃度とし、
前記希釈ガス発生部が停止される校正作業の際に、前記検出部に吸引された校正ガスにより、連続使用による前記乾式触媒の機能低下分も含めて当該水銀測定装置の感度が校正されると同時に、前記煙道側へ逆流した校正ガスにより、前記ダストフィルターに付着した煤塵が内側から吹き飛ばされる水銀測定装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2017014567A JP6857388B2 (ja) | 2017-01-30 | 2017-01-30 | 水銀測定装置 |
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JP2017014567A JP6857388B2 (ja) | 2017-01-30 | 2017-01-30 | 水銀測定装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2018124089A JP2018124089A (ja) | 2018-08-09 |
JP6857388B2 true JP6857388B2 (ja) | 2021-04-14 |
Family
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Family Applications (1)
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JP2017014567A Active JP6857388B2 (ja) | 2017-01-30 | 2017-01-30 | 水銀測定装置 |
Country Status (1)
Country | Link |
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JP (1) | JP6857388B2 (ja) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63191943A (ja) * | 1987-02-04 | 1988-08-09 | Toshiba Eng & Constr Co Ltd | 可搬式ダストサンプラ− |
JP2564402Y2 (ja) * | 1991-12-02 | 1998-03-09 | 日本石油精製株式会社 | 含煤塵ガスサンプラ |
JP4054140B2 (ja) * | 1999-07-21 | 2008-02-27 | 日本インスツルメンツ株式会社 | ガス中の水銀分析方法および装置 |
EP1664726A4 (en) * | 2003-09-22 | 2012-05-09 | Tekran Instr Corp | CONDITIONING SYSTEM AND METHOD FOR USE IN MEASURING MERCURY IN GASEOUS EMISSIONS |
JP5192652B2 (ja) * | 2006-03-31 | 2013-05-08 | 日本インスツルメンツ株式会社 | 水銀還元用触媒、水銀変換ユニットおよびこれを用いた排気ガス中の全水銀測定装置 |
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2017
- 2017-01-30 JP JP2017014567A patent/JP6857388B2/ja active Active
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