JP2011069296A - 脱硝触媒の劣化予測方法、劣化対策方法、劣化対策システム及び排ガス処理システムの設計方法 - Google Patents
脱硝触媒の劣化予測方法、劣化対策方法、劣化対策システム及び排ガス処理システムの設計方法 Download PDFInfo
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Abstract
【解決手段】燃焼機器102からの排ガスにアンモニア系物質を添加して脱硝触媒104で窒化酸化物の分解を行う排ガス処理において、硫黄酸化物による脱硝触媒104の劣化を少なくとも温度と硫黄酸化物の酸化率との関係に基づいて予測する。
【選択図】図1
Description
Claims (10)
- 燃焼機器からの排ガスにアンモニア系物質を添加して脱硝触媒で窒化酸化物の分解を行う排ガス処理において、硫黄酸化物による前記脱硝触媒の劣化を少なくとも温度と硫黄酸化物の酸化率との関係に基づいて予測することを特徴とする脱硝触媒の劣化予測方法。
- 前記温度と硫黄酸化物の酸化率との関係は、温度が上がるほどSO2酸化率が下がる関係であることを特徴とする請求項1記載の脱硝触媒の劣化予測方法。
- 前記脱硝触媒の劣化の予測値が予め定められた閾値を超えるときに前記排ガスの温度を上げることを特徴とする請求項1又は2記載の脱硝触媒の劣化予測方法を用いた脱硝触媒の劣化対策方法。
- 燃焼機器と、
前記燃焼機器からの排ガスを排出する排ガス通路と、
前記排ガス通路に設けられた脱硝触媒と、
前記排ガス通路における前記脱硝触媒と前記燃焼機器との間に設けられた前記排ガスにアンモニア系物質を添加するアンモニア系物質添加手段と、
硫黄酸化物による前記脱硝触媒の劣化を少なくとも温度と硫黄酸化物の酸化率との関係に基づいて予測結果を導出する劣化予測手段と、
を備えること特徴とする脱硝触媒の劣化対策システム。 - 前記温度と硫黄酸化物の酸化率との関係は、温度が上がるほどSO2酸化率が下がる関係であることを特徴とする請求項4記載の脱硝触媒の劣化対策システム。
- 前記劣化予測手段は、前記予測結果として前記脱硝触媒の下限活性にまで至る予測時間を導出することを特徴とする請求項4又は5記載の脱硝触媒の劣化対策システム。
- 前記劣化予測手段は、前記予測結果が予め定められた閾値を超えるときに警告を行う警告手段をさらに備えることを特徴とする請求項4から6のいずれか1項記載の脱硝触媒の劣化対策システム。
- 前記排ガスの温度を上昇させる排ガス加熱手段をさらに備え、
前記劣化予測手段による前記予測結果が予め定められた閾値を超えるときに、前記排ガス加熱手段を作動させて前記排ガスの温度を上昇させることを特徴とする請求項4から7のいずれか1項記載の脱硝触媒の劣化対策システム。 - 前記排ガス加熱手段は、前記燃焼機器の負荷を変更する負荷調節手段であることを特徴とする請求項8記載の脱硝触媒の劣化対策システム。
- 燃焼機器からの排ガスにアンモニア系物質を添加して脱硝触媒で窒化酸化物の分解を行う排ガス処理において、少なくとも温度と硫黄酸化物の酸化率との関係に応じた予測された硫黄酸化物による劣化に基づいて前記脱硝触媒を含む排ガス処理システムの設計を行う排ガス処理システムの設計方法。
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Cited By (6)
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JP2013015028A (ja) * | 2011-06-30 | 2013-01-24 | National Maritime Research Institute | 脱硝触媒の劣化再生予測プログラム及びそれを用いた脱硝システム |
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CN114460221A (zh) * | 2022-03-17 | 2022-05-10 | 触媒净化技术(南京)有限公司 | 一种脱硝工艺管控方法和系统 |
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CN114460221A (zh) * | 2022-03-17 | 2022-05-10 | 触媒净化技术(南京)有限公司 | 一种脱硝工艺管控方法和系统 |
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