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Denitration apparatus control device, denitration apparatus provided with the device, boiler installation provided with the device and control method of the denitration apparatus
Denitration apparatus control device, denitration apparatus provided with the device, boiler installation provided with the device and control method of the denitration apparatus
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机译：脱硝装置控制装置，具有该装置的脱硝装置，具有该装置的锅炉设备以及该脱硝装置的控制方法
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摘要
A control system (20) for a NOx elimination device (3) comprising a plurality of nozzles (13) for introducing a reagent into an exhaust gas flowing in a conduit (12), the control system comprising ( 20): a temperature measuring device (21, 22) for measuring a temperature distribution of the exhaust gas in which the nozzles (13) have introduced the reagent, where the temperature measuring device (21, 22) comprises optical fibers (26) arranged on adjacent wall surfaces (12a, 12b) that form the conduit (12); an analysis portion configured to obtain a function of the signal strength with respect to a predetermined wavelength from an emission spectrum (RS) actually measured by the temperature measuring device (21, 22), wherein the portion The analysis is configured to obtain the function of the signal strength with respect to a predetermined wavelength for a theoretical steam absorption spectrum contained in the exhaust gas flowing in the conduit (12); a reagent concentration distribution calculation device (23) configured to calculate the reagent concentration distribution introduced in the exhaust gas based on the exhaust gas temperature distribution calculated in the temperature measuring device (21, 22 ); a reagent spray level adjustment device (24) configured to determine a reagent flow rate that the nozzles (13) must enter according to the concentration distribution calculated in the reagent concentration distribution calculation device (23) ; and a valve control device (25) for controlling a degree of opening of the flow control valves (15) so that the nozzles (13) introduce the reagent into the exhaust gas with the flow determined in the flow device reagent spray level adjustment (24).
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