Method for detecting activity of catalyst of selective catalytic reduction (SCR) denitration system, and system thereof

Abstract

The invention provides a method for detecting the activity of a catalyst of a selective catalytic reduction (SCR) denitration system, and a system thereof. The method comprises the following steps: sampling the catalyst of the SCR denitration system to obtain a catalyst sample, and detecting the activity of the catalyst sample to obtain the apparent activity of the catalyst; performing an on-site performance test on the SCR denitration system to obtain on-site performance test data; and substituting the apparent activity, which serves as the relative proportion of the activity of each layer of catalyst, of the catalyst into a reactor performance calculation model of the SCR denitration system and performing on-site performance test data regression to obtain the actual activity of the catalyst. Through the method, the activity of the catalyst on the operation site of the SCR denitration system can be measured accurately, and the operation control accuracy of the SCR denitration system is improved.

Description

technical field [0001] The invention relates to the technical field of SCR denitrification systems, in particular to a catalyst activity detection method for an SCR denitration system and a catalyst activity detection system for an SCR denitration system. Background technique [0002] The principle of SCR (Selective Catalytic Reduction, selective catalytic reduction method) is that under the action of a catalyst, the reducing agent NH 3 At 290-400°C, NO and NO 2 reduced to N 2 , while NH hardly occurs 3 oxidation reaction, thereby increasing the N 2 selectivity, reducing the NH 3 consumption. [0003] With the wide application of SCR denitrification system in thermal power plants in my country, the problems of operation and management of SCR catalyst and denitrification system have become increasingly prominent. The catalyst activity of the SCR denitrification system is an important indicator of the operation of the SCR denitrification system, which is related to the o...

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Problems solved by technology

[0005] In view of the problem that the catalyst activity detection method of the SCR denitrification system existing in the above background technology cannot accurately measure the catalyst activity at the operation site of the SCR denitration system, the purpose of the present invention is to provide a catalyst activity detection method of the SCR denitration system, which can accurately Measure the catalyst activity at the operation site of the SCR denitrification system to improve the accuracy of the operation scheduling of the SCR denitrification system

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