Optimal control method and system for scr denitrification system

A technology of system optimization and control method, applied in the field of SCR denitration system, can solve problems such as affecting the control efficiency and rationality of SCR denitration system, and unable to optimize control of system real-time parameters.
CN103425103BActive Publication Date: 2016-06-08ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
Publication Date
2016-06-08

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Abstract

The invention provides a selective catalytic reduction (SCR) denitration system optimizing control method and a system thereof. The SCR denitration system optimizing control method comprises the steps of obtaining reflecting parameters of NO of an SCR denitration system under a preset temperature by measurement respectively when the nitrogen-ammonia ratio is larger than 1 and smaller than 1; calculating apparent reaction rate constant KNO of NO under various obtained temperatures, activation energy of adsorption rate constants of NH3 under various temperatures and pre-exponential factors according to the obtained reflecting parameters, establishing a control model of an infinitesimal volume of a reactor of the SCR denitration system, and performing power optimizing control on the SCR denitration system. Accordingly, Optimizing control can be performed on the SCR denitration system on the basis of SCR denitration system real-time kinetic parameters, and control efficiency and rationality on the SCR denitration system can be improved.
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Description

technical field

[0001] The invention relates to the technical field of SCR denitrification systems, in particular to an optimal control method for an SCR denitrification system and an optimal control system for an SCR denitrification 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 NH3 reduces NO and NO2 to N2 at 290-400 ° C, and almost no oxidation reaction of NH3 occurs, thereby improving the selection of N2 Sex, reducing the consumption of NH3.

[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 optimal scheduling of the SCR denitrification system is related to the normal operation of the SCR denitrification system, and also related to cost control.

[0004] Ho...

Claims

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