JP6770176B2 - 排煙脱硝方法 - Google Patents
排煙脱硝方法 Download PDFInfo
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- JP6770176B2 JP6770176B2 JP2019511754A JP2019511754A JP6770176B2 JP 6770176 B2 JP6770176 B2 JP 6770176B2 JP 2019511754 A JP2019511754 A JP 2019511754A JP 2019511754 A JP2019511754 A JP 2019511754A JP 6770176 B2 JP6770176 B2 JP 6770176B2
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 156
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 96
- 239000003546 flue gas Substances 0.000 claims description 96
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Description
3 新しく追加された触媒粒子 4 脱硝済みの触媒粒子
5 浄化ガス 6 アンモニア噴射グリル
7 触媒添加管 8 触媒担持部材
9 コンベア駆動輪 10 触媒排出管
11 触媒ホッパー 12 反応器内筒
13 反応器外殻
Claims (11)
- 排煙が脱硝反応器の底部から入り、アンモニア含有混合ガスがアンモニア噴射グリルにより排煙に注入され、気流が下から上へ水平に互い違いに配列された多層の触媒床を通して、脱硝反応を発生させてNOXを除去し、それと同時に排煙における粉塵が触媒床により濾過されて除塵され、脱硝と除塵後の排煙が反応器の頂部から排出され、さらに次の脱硫処理を行うステップを含む排煙脱硝方法であって、
触媒床は、上下複数層の網状コンベアとコンベアに堆積された粒子状脱硝触媒から構成され、隣接する2つの触媒床の間の垂直距離が1200〜2000mmであり、前記粒子状脱硝触媒は、粒子径が3〜6mm、かさ密度が0.2〜0.8g/cm 3 、比表面積が80〜120m 2 /gであり、上下複数層のコンベアの移動方向の両端は反応器外側の密閉チャンバ内に配置され、隣接する上下の二層のコンベアの移動方向が反対し、上層の粒子状脱硝触媒がコンベアに伴ってコンベアの末端まで移動して、重力を利用して下層のコンベアの移動方向の前記密閉チャンバ内の開始端に自由落下し、粒子状脱硝触媒が最後層のコンベアの前記密閉チャンバ内の末端で触媒回収装置に落下して回収される排煙脱硝方法。 - 前記網状コンベアのメッシュサイズが0.1〜3mmである請求項1に記載の方法。
- 前記触媒床の数が3〜10である請求項1または2に記載の方法。
- 前記脱硝反応器に入る排煙の温度が300〜420℃である請求項1〜3のいずれか1項に記載の方法。
- アンモニアは、アンモニアと空気とを含有する混合ガスとして導入され、且つ前記混合ガス中のアンモニアの体積濃度が0.5〜10%である請求項1〜4のいずれか1項に記載の方法。
- 前記混合ガスは前記触媒床の下方から注入される請求項5に記載の方法。
- アンモニアと、排煙における窒素原子換算の窒素酸化物とのモル比が0.9〜1.15:1である請求項1〜6のいずれか1項に記載の方法。
- 前記排煙の流速は2〜15m/s、反応滞在時間は0.5〜20sである請求項1〜7のいずれか1項に記載の方法。
- 前記触媒担持部材での前記粒子状脱硝触媒のスタック高さが50〜500mmである請求項1〜8のいずれか1項に記載の方法。
- 前記網状コンベアの搬送速度が0.1〜10mm/sである請求項1〜9のいずれか1項に記載の方法。
- 前記アンモニア噴射グリルを用いてアンモニアを噴射するとき、アンモニアの濃度分布の偏差範囲が5%〜30%であることが要求される請求項1に記載の方法。
Applications Claiming Priority (3)
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CN201610767731.8 | 2016-08-31 | ||
CN201610767731.8A CN107789983A (zh) | 2016-08-31 | 2016-08-31 | 一种烟气脱硝方法及脱硝反应器 |
PCT/CN2017/099794 WO2018041171A1 (zh) | 2016-08-31 | 2017-08-31 | 烟气脱硝方法 |
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JP2019531881A JP2019531881A (ja) | 2019-11-07 |
JP6770176B2 true JP6770176B2 (ja) | 2020-10-14 |
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US (1) | US11213788B2 (ja) |
EP (1) | EP3498360A4 (ja) |
JP (1) | JP6770176B2 (ja) |
CN (1) | CN107789983A (ja) |
WO (1) | WO2018041171A1 (ja) |
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CN110052157A (zh) * | 2019-04-01 | 2019-07-26 | 浙江菲达环保科技股份有限公司 | 一种基于改性赤泥的Hg、SO3协同脱除装置 |
CN110052162A (zh) * | 2019-05-15 | 2019-07-26 | 北京国电龙源环保工程有限公司 | Scr脱硝反应器中的脱硝催化剂系统及其脱硝方法 |
GB2593207B (en) * | 2020-03-19 | 2022-06-01 | Narasimhamurthy Prakashkumar | A continuous type process method to increase the rate of reaction between solids, liquids, and gasses per area of the land occupied by two reactors |
CN112370964B (zh) * | 2020-10-28 | 2023-03-10 | 国网山东省电力公司电力科学研究院 | 一种改善燃煤电站锅炉scr系统综合性能的方法及系统 |
CN113617218A (zh) * | 2021-09-03 | 2021-11-09 | 唐山鑫联环保科技有限公司 | 一种脱硝药剂胶囊及其制备方法与用途 |
CN114887477B (zh) * | 2022-05-17 | 2023-08-22 | 广东国鑫实业股份有限公司 | 一种烧结机脱硝系统 |
CN115475508A (zh) * | 2022-09-28 | 2022-12-16 | 天津中材工程研究中心有限公司 | Sncr旋风筒喷枪的插入位置判断方法及自动调整系统 |
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CN2350119Y (zh) * | 1998-10-30 | 1999-11-24 | 中国科学院化工冶金研究所 | 多层流化移动床反应器 |
CN1911491A (zh) * | 2006-08-03 | 2007-02-14 | 长春惠工净化工业有限公司 | 移动床烟气脱硫脱硝除尘工艺 |
CN101613101B (zh) * | 2008-03-06 | 2012-02-01 | 项瑞芳 | 具有净化自身尾气功能的化学法制活性炭方法 |
EP2789677A1 (en) * | 2013-04-12 | 2014-10-15 | Kymi Baltic Consulting Oü | Torrefaction plant, its operation and maintenance |
CN105859097A (zh) * | 2016-05-24 | 2016-08-17 | 华南理工大学 | 一种结合热电厂余热利用污泥干燥方法及其装置 |
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JP2019531881A (ja) | 2019-11-07 |
US11213788B2 (en) | 2022-01-04 |
US20190224621A1 (en) | 2019-07-25 |
EP3498360A4 (en) | 2020-04-01 |
WO2018041171A1 (zh) | 2018-03-08 |
CN107789983A (zh) | 2018-03-13 |
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