JP5208883B2 - 煙道ガス中の三酸化硫黄および他の凝縮性物質の検出、測定および制御のための方法および装置 - Google Patents
煙道ガス中の三酸化硫黄および他の凝縮性物質の検出、測定および制御のための方法および装置 Download PDFInfo
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- 239000003546 flue gas Substances 0.000 title claims description 63
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- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 title claims description 52
- 238000000034 method Methods 0.000 title claims description 51
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- 238000010438 heat treatment Methods 0.000 claims description 42
- 239000007789 gas Substances 0.000 claims description 41
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- 238000009833 condensation Methods 0.000 claims description 28
- 230000005494 condensation Effects 0.000 claims description 28
- BIGPRXCJEDHCLP-UHFFFAOYSA-N ammonium bisulfate Chemical compound [NH4+].OS([O-])(=O)=O BIGPRXCJEDHCLP-UHFFFAOYSA-N 0.000 claims description 18
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- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 2
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- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 2
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- 239000004215 Carbon black (E152) Substances 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 1
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- 239000002253 acid Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
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- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 239000001257 hydrogen Substances 0.000 description 1
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- QAOWNCQODCNURD-UHFFFAOYSA-M hydrogensulfate Chemical compound OS([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-M 0.000 description 1
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- 230000000977 initiatory effect Effects 0.000 description 1
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- 230000002452 interceptive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 229910000623 nickel–chromium alloy Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910017464 nitrogen compound Inorganic materials 0.000 description 1
- 150000002830 nitrogen compounds Chemical class 0.000 description 1
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- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
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- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
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Classifications
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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
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/14—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/56—Investigating or analyzing materials by the use of thermal means by investigating moisture content
- G01N25/66—Investigating or analyzing materials by the use of thermal means by investigating moisture content by investigating dew-point
- G01N25/68—Investigating or analyzing materials by the use of thermal means by investigating moisture content by investigating dew-point by varying the temperature of a condensing surface
-
- 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
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0042—SO2 or SO3
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- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Treating Waste Gases (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Description
本出願人は、2008年8月14日に出願された係属中の米国仮特許出願第61/088,923号の35U.S.C.119条(e)に基づく利益を請求する。
従来技術試料採取方式で使用されるプローブには、温度検知器がしばしば設けられている。
三酸化硫黄を含有しているかもしれない気体の試料を得;
該試料を500°F(260℃)より上の温度に加熱して、該試料中に存在するすべての微粒硫酸および煙霧質硫酸を分解蒸発させ;
すべての三酸化硫黄を硫酸に変換するために、該試料を400°F(204℃)より下の温度に冷却し;
非導電性外部表面上に複数の相隔たる接点を有するプローブを該試料中に置き;
選択された時間にわたって、該非導電性外部表面を選択された加熱速度で加熱しその後該非導電性外部表面を選択された冷却速度で冷却し;
該選択された時間にわたって、該接点間の電流の流れを監視し;
該プローブの該非導電性外部表面の温度を監視し;
該電流の流れのプロットにおいてピークが存在するかどうかを判定し;
各ピークに対応する温度を識別し;及び
識別された温度が硫酸の動力学的露点に相当するかどうかを判定する、
工程を備える。
Claims (19)
- 凝縮性物質を含有する気体中に存在する凝縮性物質の量を測定する方法であって、
非導電性外部表面上に複数の相隔たる接点を有するプローブを、凝縮性物質を含有する気体中に置き;
選択された時間にわたって、該非導電性外部表面を選択された加熱速度で加熱しその後に該非導電性外部表面を選択された冷却速度で冷却し;
該選択された時間にわたって、該接点間の電流の流れを監視し;
該選択された時間にわたって、該プローブの該非導電性外部表面の温度を監視し;
該選択された時間にわたる該電流の流れのプロットにおけるピークを識別し;
各ピークに対応する時刻に対する温度を識別し;及び
各々の識別された温度で、どの凝縮性物質が動力学的露点を有するかを相関させ;及び
各々の識別された凝縮性物質に対して、その物質に対する識別された温度を、その物質に対する露点温度と濃度との所定の相関関係と比較して、該気体中に存在するその凝縮性物質の量を測定する、
ことを含む、前記の方法。 - 該プローブを1/2〜30分の時間加熱する、請求項1の方法。
- 該プローブを1/2〜30分の時間冷却する、請求項1の方法。
- 該気体が煙道ガスである、請求項1の方法。
- 該凝縮性物質が重硫酸アンモニウム、重硫酸ナトリウム、三酸化硫黄、および水の少なくとも1種である、請求項4の方法。
- アンモニア、アンモニア化合物、カルシウム、カルシウム化合物、ナトリウム、ナトリウム化合物、マグネシウム、およびマグネシウム化合物から成る群から選択される添加剤を該煙道ガス流中に注入することを更に含む、請求項4の方法。
- 識別される凝縮性化合物に基づいて該添加剤を選択する、請求項6の方法。
- 請求項4の方法であって、
アンモニアが該煙道ガス中に注入されており及び重硫酸アンモニウムが該凝縮性化合物として識別されており、
該煙道ガスから重硫酸アンモニウムを最小にする又は除去するように、該アンモニアの注入を調整することを更に含む、前記の方法。 - 請求項8の方法であって、
該アンモニアが種々のノズルを通して注入されており、
それらノズルのすべてを通るアンモニアの流れを変化させるようにそれらノズルの少なくとも一つを調整することを更に含む、前記の方法。 - 該選択された時間の間、該選択された加熱速度を調整することを更に含む、請求項1の方法。
- 該選択された時間の間、該選択された冷却速度を調整することを更に含む、請求項1の方法。
- 請求項1の方法であって、
該気体が煙道ガスであり、及び、少なくとも1種の添加剤が少なくとも一つの注入器を通して該煙道ガス中に注入されており、
該煙道ガス中で検出されている少なくとも1種の凝縮性物質の濃度に応じて該少なくとも一つの注入器を調整することを含む、前記の方法。 - 該気体が発電所(power generation plant)の煙道ガスである請求項1の方法であって、
所定のプラント装置の操作温度を、存在が検出された凝縮性物質の凝縮を避ける最小温度より上にあるように制御することを更に含む、前記の方法。 - 該プラント装置が少なくとも一つの空気加熱器である、請求項13の方法。
- 該空気加熱器の操作温度が熱回収を最大にするように制御される、請求項14の方法。
- 該プローブが挿入される気体の温度より高い温度に該プローブを加熱することを更に含む、請求項1の方法。
- 請求項1の方法であって、ナトリウムが該気体中に選択された速度で注入されており、
該気体中に存在することが検出されたナトリウム化合物凝縮性物質の濃度を測定した後でナトリウム注入速度を調整することを更に含む、前記の方法。 - 三酸化硫黄が気体中に存在しているかどうかを判定する方法であって、
三酸化硫黄を含有しているかもしれない気体の試料を得;
該試料を500°F(260℃)より上の温度に加熱して、該試料中に存在するすべての微粒硫酸および煙霧質硫酸を分解蒸発させ;
すべての三酸化硫黄を硫酸に変換するために、該試料を400°F(204℃)より下の温度に冷却し;
非導電性外部表面上に複数の相隔たる接点を有するプローブを該試料中に置き;
選択された時間にわたって、該非導電性外部表面を選択された加熱速度で加熱しその後該非導電性外部表面を選択された冷却速度で冷却し;
該選択された時間にわたって、該接点間の電流の流れを監視し;
該プローブの該非導電性外部表面の温度を監視し;
該電流の流れのプロットにおいてピークが存在するかどうかを判定し;
各ピークに対応する温度を識別し;及び
識別された温度が硫酸の動力学的露点に相当するかどうかを判定する、
ことを特徴とする、前記の方法。 - 該試料が加熱された後で冷却前に、灰微粒子を除去する慣性力濾過器に該試料を通過させ;及び
次に、600〜900°F(316〜482℃)の範囲の温度で操作されている触媒性脱窒触媒に該試料を通過させる、
ことを更に含む、請求項18の方法。
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EP (1) | EP2154530B1 (ja) |
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US20140202233A1 (en) * | 2011-09-08 | 2014-07-24 | Horiba, Ltd. | Gas analysis device and contamination detection method used in same |
WO2013035657A1 (ja) * | 2011-09-08 | 2013-03-14 | 株式会社堀場製作所 | 吸着性ガス分析装置及び吸着性ガス分析方法 |
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WO2016074178A1 (zh) * | 2014-11-12 | 2016-05-19 | 德梅斯特科技有限公司 | 一种用于净化火力发电厂尾气的装置 |
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WO2016146959A1 (en) | 2015-03-17 | 2016-09-22 | Statoil Petroleum As | Dew point and carry-over monitoring |
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CN105606683A (zh) * | 2016-01-29 | 2016-05-25 | 华电电力科学研究院 | So3在线连续监测装置及方法 |
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CN108459134B (zh) * | 2018-03-22 | 2024-03-12 | 西安交通大学 | 烟气冷凝除湿脱污环境活性离子取样监测探针、系统及方法 |
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WO2021150752A1 (en) * | 2020-01-21 | 2021-07-29 | Breen Energy Solutions | Systems and methods for detecting moisture leaks or moisture ingress |
CN111693559B (zh) * | 2020-06-22 | 2022-04-01 | 中国核动力研究设计院 | 气相混合物的蒸汽液滴质量流量分离测量装置及测量方法 |
CN112834562B (zh) * | 2021-01-04 | 2022-04-12 | 吉林大学 | 一种热导式混合气体中氦气浓度检测的装置及其方法 |
CN113731047A (zh) * | 2021-08-16 | 2021-12-03 | 中科三清科技有限公司 | 一种烟气脱硫脱硝除尘一体化装置及其处理工艺 |
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