Monitoring and automatic control system for wet method flue gas desulfurization technology

Abstract

The invention relates to a kind of wet-form stack-gas desulfurizing industrial art monitoring and auto-control system, which can be used in desulfurizing industrial art by spraying lime powder or size mixture of lime to stack gases in order to forming high purity gypsum. The hardware of the invention contains industrial cybertron, PLC, group of server, router, Internet system and remote terminal. And the feature of it is that it contains the subsystems as follows: the monitoring and data acquisition subsystem, which includes the intelligence instrument; the simulated instrument and the observation system of the air pollutant that is CEMS; the data processing and electrical control system, which controls the on-the-spot actuating mechanism by PLC; the network and data communication subsystem and the safety control subsystem, which include the safety emergency power supply and the control cabinet on the spot of the subject equipment. The industrial cybertron works for data processing and central control, which uses PLC to control spot actuating mechanism, and it can manifest the data of equipment state at the right moment and can type all kinds of report form, in order to realize auto-control and remote control at the right moment.

Description

technical field [0001] The invention belongs to the technical field of automatic control, in particular to a wet flue gas desulfurization process monitoring and automatic control system. Background technique [0002] The flue gas of coal-fired boilers in thermal power plants contains harmful gases such as sulfur dioxide and nitrogen oxides. In order to protect the environment, the flue gas should be desulfurized and purified to meet the emission standards and control the total emission. At present, the lime (stone)-gypsum wet flue gas desulfurization process is widely used, which is relatively mature. This technology has been applied to the flue gas purification project of coal-fired boilers. Corresponding monitoring and control equipment are also partially used in wet flue gas desulfurization systems, but a complete monitoring and automatic control technology has not yet been formed, and comprehensive monitoring and automatic control of wet flue gas desulfurization systems ...

AI Technical Summary

Problems solved by technology

Corresponding monitoring and control equipment are also partially used in wet flue gas desulfurization systems, but a complete monitoring and automatic control technology has not yet been formed, and comprehensive monitoring and automatic control of wet flue gas desulfurization systems cannot be implemented, resulting in wet flue gas desulfurization. The operation of the gas desulfurization system is unstable, and the desulfurization efficiency is difficult to guarantee

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