Exhaust gas treatment device and exhaust gas treatment method

In an exhaust gas treatment device (4), an adsorbent supply unit (41) supplies a mercury adsorbent to exhaust gas in an exhaust gas path through which the exhaust gas generated by a combustion chamber (21) flows, and a bag filter (42) collects the mercury adsorbent. The heat exchange unit (49) is di...

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Bibliographische Detailangaben
Hauptverfasser:	USUTANI AKIHIRO, FURUBAYASHI MICHITAKA
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING HEAT EXCHANGE IN GENERAL HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT HEATING LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	In an exhaust gas treatment device (4), an adsorbent supply unit (41) supplies a mercury adsorbent to exhaust gas in an exhaust gas path through which the exhaust gas generated by a combustion chamber (21) flows, and a bag filter (42) collects the mercury adsorbent. The heat exchange unit (49) is disposed between the combustion chamber (21) and the bag filter (42) in the exhaust passage, and exchanges heat between the exhaust gas and a predetermined fluid. An upstream mercury concentration meter (45) measures the mercury concentration of the exhaust gas between the combustion chamber (21) and the bag filter (42) in the exhaust gas path as an upstream mercury concentration. The fly ash removal unit (48) is capable of removing fly ash deposited on the heat exchange unit (49) by a cleaning operation such as pressure wave cleaning, and performing the cleaning operation on the basis of the upstream mercury concentration. In the exhaust gas treatment device (4), the mercury concentration of the exhaust gas can be a