Method for predicting residual life of in-service denitration catalyst based on actual operating conditions

Abstract

The invention provides a method for predicting the residual life of an in-service denitration catalyst based on actual operating conditions. The method includes sampling and detecting the in-service denitration catalyst to measure the current activity K1 of the in-service denitration catalyst; collecting data such as average flue gas flow rate V, average coal consumption mass M, initial activity K0 of the denitration catalyst, the current in-service time T1 of the denitration catalyst and the like of the unit in a coal-fired power plant, substituting the collected and detected data into a formula to calculate a correction coefficient lambda to obtain an in-service denitration catalyst deactivation graph; and predicting the residual life ts of the in-service denitration catalyst according to the catalyst activity threshold Ky provided by a manufacturer when the denitration catalyst is initially mounted, and calculating the residual life ts of the in-service catalyst. The method realizesthe prediction of the residual life of the in-service denitration catalyst, provides a guarantee for the power plant to replace the deactivated catalyst in time at a catalyst failure point, so that the waste of catalyst potential is avoided, and the generation of solid hazardous waste is reduced.

Description

technical field [0001] The invention belongs to the technical field of life management of denitrification catalysts, and in particular relates to a method for predicting the remaining life of denitrification catalysts in service based on actual operating conditions. Background technique [0002] SCR flue gas denitrification technology is the most widely used and mature flue gas denitrification technology in coal-fired power plants at home and abroad. In the actual production process of the power plant, with the increase of time, the harsh operating environment will gradually cause the abrasion of the SCR denitrification catalyst, microscopic pore blockage, arsenic poisoning, alkali metal poisoning, etc., so that the active sites on the surface of the catalyst will continue to decrease. The life cannot be used up to standard. [0003] At present, whether the denitrification catalyst has reached its service life and whether the power plant needs to replace the catalyst layer ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of the existing traditional methods, such as untimely judgment of catalyst failure point and inability to predict the remaining life of denitrification catalysts in service, the present invention proposes a method for predicting the remaining life of denitrification catalysts in service based on actual operating conditions

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