Flue gas desulfurization and denitration integrated equipment controlled through multiple variables and control method thereof

Abstract

Provided is flue gas desulfurization and denitration integrated equipment controlled through multiple variables. The equipment comprises process parameter detection devices, process parameter adjustment devices and a computer control system, the computer control system is connected with all the parameter detection devices and parameter adjustment devices, process parameter signals of all the detection devices are received, a desulfurization and denitration process multivariable control algorithm is run, and a control signal is output to all the adjustment devices. The invention provides a control method of the equipment. According to the control method, the desulfurization and denitration control precision can be improved, the running cost is reduced, the defects that in the desulfurization and denitration process, large time delay, great inertia and desulfurization and denitration index fluctuation, caused by various internal disturbance, of discharged flue gas are overcome, and environmental protection index bounder control is achieved.

Description

technical field [0001] The invention relates to the field of combustion flue gas desulfurization and denitrification, and more particularly relates to a multi-variable control flue gas desulfurization and denitrification integrated equipment and a control method thereof. Background technique [0002] Combustion process is the main means of providing heat energy and widely exists in industrial production. However, the flue gas produced by combustion often contains SO 2 and nitrogen oxides NO x , These components are important air pollutants that can cause acid rain, smog, and chemical smog, and have long-term damage to humans, animals, plants, buildings, and facilities. [0003] Desulfurization and denitrification are combustion flue gas treatment and reduction of SO 2 and nitrogen oxides NO x An important technical means of emission. There are many desulfurization and denitrification processes, and the integrated process of wet ammonia forced turbulent desulfurization a...

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Problems solved by technology

[0008] However, when using this device to treat emissions, often due to changes in the composition and flow of flue gas or various disturbances in the internal system, the corresponding process parameters still maintain the original set values, resulting in too many reactants added and increased costs or Too little and not enough desulfurization and denitrification, so that the SO in the treated flue gas 2 and nitrogen oxides NO x The content cannot meet the emission indicators required by the national environmental protection standards

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