Thermal power plant denitration catalyst service life on-line evaluation method
A denitration catalyst and catalyst technology, applied in the direction of chemical analysis using catalysis, can solve problems such as insufficient operating experience and lack of catalyst life evaluation.
Inactive Publication Date: 2017-05-31
STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +1
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Problems solved by technology
At present, flue gas denitrification is still an emerging environmental protection field in China, and the operation experience is insufficient, and the power plant lacks corresponding experience and theoretical basis for catalyst life evaluation
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[0029] In this embodiment, an online monitoring device for the service life of a denitrification catalyst in a thermal power plant is as follows: figure 1 As shown, the device includes a flue gas analysis system 3 at the inlet of the denitrification device, an ammonia escape detection system 4 , a flue gas analysis system 5 at the outlet of the denitrification device, a data collector 6 and an industrial computer 7 .
[0030] First, establish some layer of catalyst for monitoring. The device of the evaluation method is used to detect the catalyst activity and denitrification potential indicators of the catalyst layer when it is newly installed, and calculate the total P value. Then, in the daily operation of the denitrification device, the activity of the catalyst in this layer and the change of the denitrification potential index value are collected in real time, and the P value that changes with the system running time is calculated; finally, by tracking the changes of these...
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The invention relates to a thermal power plant denitration catalyst service life on-line evaluation method. The method comprises the following steps: installing a flue gas flow rate / flue gas temperature measuring apparatus at the inlet of the denitration device, installing an ammonia escape measuring apparatus at the outlet, installing NO and O2 measuring apparatuses respectively before and after each layer of catalyst of the denitration device, transmitting on-line measurement data to an industrial personal computer, computing the activity and denitration potential index of the current denitration catalyst by using special software, and judging the residual life of the catalyst according to the change condition of the catalyst denitration potential index value. The invention also relates to a thermal power plant denitration catalyst service life on-line monitoring device which comprises a denitration device inlet flue gas analysis system (3), an ammonia escape detection system (4), a denitration device outlet flue gas analysis system (5), a data acquisition unit (6) and an industrial personal computer (7). The thermal power plant denitration catalyst service life on-line monitoring device can be utilized to implement on-line evaluation on the thermal power plant denitration catalyst service life.
Description
technical field [0001] The invention relates to an online evaluation method for the service life of a denitrification catalyst in a thermal power plant, and belongs to the technical field of flue gas denitrification in a thermal power plant. Background technique [0002] Nitrogen oxides (NOx), as one of the main pollutants emitted by coal-fired power plants, have brought serious adverse effects on the environment and human health. Selective catalytic reduction (SCR) denitrification technology is currently the mainstream technology for controlling flue gas NOx emissions in thermal power plants due to its high efficiency and reliability. Since the "Twelfth Five-Year Plan", with the country's increasing environmental protection requirements for thermal power plants, new requirements have been put forward for NOx emission standards for power plants, and SCR denitrification technology has been widely used in domestic coal-fired power plants. The performance of the SCR denitratio...
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IPC IPC(8): G01N31/10
CPCG01N31/10
Inventor 邓永强徐锐梅重民林福海
Owner STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST