SCR denitration ammonia spraying control method, device, equipment and medium

Abstract

The invention discloses an SCR denitration ammonia spraying control method, device and equipment and a medium. The SCR denitration ammonia spraying control method comprises the following steps: acquiring first nitrogen oxide content data at an outlet of a waste gas pipeline of an SCR denitration ammonia spraying system at the end moment of a current detection period; generating a first control signal when the first nitrogen oxide content data exceeds a maximum preset concentration threshold value, wherein the first control signal is used for controlling a valve of an ammonia water flow regulating valve of the SCR denitration ammonia spraying system to be increased by a first preset opening degree at the end moment of the current detection period; when the first nitrogen oxide content data does not exceed the minimum preset concentration threshold value, generating a second control signal, wherein the second control signal is used for controlling a valve of the ammonia water flow regulating valve to be reduced by a second preset opening degree at the end moment of the current detection period, and the highest preset concentration threshold value is higher than the lowest preset concentration threshold value. The technical effect of high-efficiency and high-accuracy ammonia gas consumption adjustment is achieved.

Description

Technical field[0001]The present invention relates to the field of industrial flue gas treatment, and more particularly to a SCR denitration spray ammonia control method, apparatus, apparatus, and medium.Background technique[0002]SCR (selective catalytic reduction technology) denitrifination is widely used in the industrial waste gas treatment link of the steel industry sintering production line and the ball. SCR denitrifination spray has advantages to simple structure, high degreasing efficiency, no by-products and reliable operation. In the prior art, the SCR denitration hammer is mainly to deliver ammonia water from the ammonia water tank to the ammonia water evaporator, and the resulting ammonia gas is mixed with high temperature air (also referred to as an exhaust pipe), in the catalyst Reaction with nitrogen oxides in industrial exhaust gas.[0003]Ammonia is a major reactant of the SCR denitration method. In practical applications, the operator manually controls the ammonia wat...

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Problems solved by technology

[0005] The embodiment of this application solves the slow adjustment speed and accuracy of ammonia injection in the prior art by providing a method, device, equipment and medium for SCR denitrification and ammonia injection control Poor technical problems, achieved the technical effect of improving the adjustment speed and accuracy of ammonia injection

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