Signal amplification type PLC flue gas desulfurization control system

Abstract

The invention discloses a signal amplification type PLC flue gas desulfurization control system. The signal amplification type PLC flue gas desulfurization control system mainly comprises a desulfurization device (1), and is characterized by further comprising a starting and shutdown circuit (7), a PLC (2), an industrial control upper computer (3), a signal processing module (4), a signal acquiring device (5), a displayer (6), a warning circuit (8), a power circuit (9) and a UPS module (10), wherein the starting and shutdown circuit (7) is connected with the desulfurization device (1), the PLC (2) is connected with the starting and shutdown circuit (7), the industrial control upper computer (3) and the signal processing module (4) are connected with the PLC (2), the signal acquiring device (5) is connected with the signal processing module (4), the displayer (6), the warning circuit (8) and the power circuit (9) are connected with the PLC (2), and the UPS module (10) is connected with the power circuit (9). According to the signal amplification type PLC flue gas desulfurization control system, acquired sulfur dioxide concentration signals can be processed, and signals received by the PLC can be more real, so that the PLC conveniently conducts accurate control over the desulfurization device.

Description

technical field [0001] The invention relates to the field of flue gas desulfurization, in particular to a signal amplification PLC flue gas desulfurization control system. Background technique [0002] As an important primary energy source in my country, coal accounts for more than 70% of my country's energy consumption. However, due to the large amount of sulfur contained in coal, sulfur dioxide will be generated during combustion and discharged into the air, forming a large area of ​​acid rain. Acid rain can make forests Withering, soil acidification, crop yield reduction, the disappearance of many aquatic organisms, and erosion of buildings have caused great harm to human production and life. Therefore, controlling the content of sulfur dioxide discharged into the air during coal combustion is the most fundamental and direct way to solve acid rain pollution. As early as the 1970s, my country began to conduct research on flue gas desulfurization technology. However, with t...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the inaccurate detection of sulfur dioxide concentration in the currently used desulfurization control system, and to provide a signal amplification PLC flue gas desulfurization control system

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