A method for evaluating the denitrification capacity of scr reactor

An SCR reactor and denitrification technology, applied in instruments, data processing applications, special data processing applications, etc., can solve the problems of time-consuming and labor-intensive, unable to reflect the flue gas flow field, etc., and achieve the effect of avoiding prediction errors
CN109493250BActive Publication Date: 2021-09-07DATANG NANJING ENVIRONMENTAL PROTECTION TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DATANG NANJING ENVIRONMENTAL PROTECTION TECH
Publication Date
2021-09-07

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Abstract

The invention discloses a method for evaluating the denitrification ability of an SCR reactor, which comprises the following steps: obtaining historical data of each measuring point of the unit from a data source, performing data preprocessing, correcting the oxygen amount at the outlet and inlet NOx concentrations, and calculating the denitration capacity. In addition to the amount of ammonia consumed per unit of NOx, the working conditions of temperature and outlet NOx concentration are divided and typical working conditions are selected, and the ammonia consumption curve of removing unit NOx is fitted and converted accordingly. The upper limit is determined by the relationship between the amount of ammonia and the slip rate of ammonia, and the denitrification capability of the SCR reactor is evaluated in combination with the slope of the trend line and the upper limit. The method for evaluating the denitrification capability of the SCR reactor provided by the invention can realize steady-state tracking and self-adaptive correction calculation.
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Description

technical field

[0001] The invention belongs to the technical field of coal-fired denitrification, and in particular relates to a method for evaluating the denitrification ability of an SCR reactor, which macroscopically evaluates the denitrification ability and catalyst life of the SCR reactor based on unit operation data. Background technique:

[0002] In the coal-fired boiler SCR system, catalyst deactivation is inevitable. Harmful elements such as alkali metals and arsenic in flue gas can cause catalyst poisoning, and catalyst sintering, pore blockage and wear will affect catalyst life. The denitrification catalyst can be used for a long time under ideal conditions, but in the actual use of power plants, the actual performance of the catalyst is often limited by the operating conditions, and its service life is ever-changing. Recently, the country has become more and more stringent on the NOx emission control of coal-fired power plants. To achieve "ultra-low emissions",...

Claims

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