Performance detection apparatus for denitration catalyst

Abstract

The invention provides a performance detection apparatus for a denitration catalyst. The performance detection apparatus comprises a gas preparation system, a heating system and a detection system, wherein the gas preparation system comprises a gas preparation tank and a gas inlet pipeline, the gas preparation tank is used for mixing gaseous raw materials so as to simulate flue gas in a power plant and connected with the heating system through the gas inlet pipeline, the heating system comprises a preheating furnace and a reaction furnace, the preheating furnace is connected with the gas inlet pipeline, and the reaction furnace is matched with the detection system. When mixed gas passes through the denitration catalyst, heat is supplied to the denitration catalyst so as to ensure complete reaction of the denitration catalyst. According to the invention, a catalyst fixing rack is designed, so the problem of mismatching between the shape of the catalyst and the shape of a reactor is overcome, the catalyst is better fixed, complete reaction of the catalyst can be ensured, and detection results are more accurate.

Description

technical field [0001] The invention relates to the technical field of detection of process characteristic indexes of denitrification catalysts. Background technique [0002] The principle of using the SCR denitrification catalyst selected by the coal-fired power plant is that the NO and NH in the flue gas 3 In the presence of a denitrification catalyst, the reaction occurs at a certain temperature to generate non-polluting N 2 and H 2 O, the reaction principle is: [0003] 4NO+4NH 3 +O 2 →4N 2 +6H 2 O, [0004] 6NO+4NH 3 →5N 2 +6H 2 O. [0005] However, the denitration efficiency in the reaction process is related to many factors, such as the influence of reaction temperature on denitration rate, the influence of flue gas flow on denitration rate, the influence of NO concentration on denitration rate, the influence of water content on denitration rate, etc. In particular, the flue gas temperature has a great influence on the activity of the denitrification catal...

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Problems solved by technology

[0005] However, the denitration efficiency in the reaction process is related to many factors, such as the influence of reaction temperature on denitration rate, the influence of flue gas flow on denitration rate, the influence of NO concentration on denitration rate, the influence of water content on denitration rate, etc. In particular, the flue gas temperature has a great influence on the activity of the denitrification catalyst. The general performance detection device cannot accurately control the temperature of the flue gas flowing through the catalyst pores when detecting the catalyst activity. At the same time, it is difficult to ensure that the catalyst The uniformity of the reaction temperature in the reactor, there is another defect that the seal of the reactor is not good enough, it is easy to leak gas, resulting in inaccurate detection data, and the leakage of toxic gas into the air will cause harm to the human body

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