Integrated control method and system for wet desulphurization absorption tower system

Abstract

The invention discloses an integrated control method for a wet desulphurization absorption tower system. The integrated control method comprises the following steps: step S01, selecting working condition classification parameters; S02, establishing a classification model; S03, establishing a working condition classification knowledge base; S04, collecting real-time working condition operation parameters of the desulfurization system; S05, comparing the real-time working condition operation parameters acquired in the step S04 with optimal operation parameter data in the working condition classification knowledge base established in the step S03, identifying and classifying the working condition category of the current desulfurization system, and determining the category of the working condition of the current desulfurization system; and S06, matching optimal working condition operation parameter data suitable for the working condition category of the current desulfurization system determined in the step S05. The invention further discloses an integrated control system of the wet desulphurization absorption tower system. According to the method and the system, the energy consumption of a desulfurizing absorption tower system is greatly reduced, and the pH value and the outlet sulfur value are more intelligently controlled, so that the production requirements are better met and adapted.

Description

technical field [0001] The invention relates to a wet desulfurization absorption tower system integrated control method and system, belonging to the technical field of power plant desulfurization systems. Background technique [0002] At present, the absorption tower of the power plant desulfurization system consumes a lot of energy, it is difficult to choose the optimal combination of the slurry circulation pump, and it is difficult to control the outlet sulfur emission and the pH value of the absorption tower; the fuel of the power plant changes frequently, resulting in the generation of pollutants far exceeding the system design value. [0003] Absorption in the desulfurization absorption tower is the core system of the entire desulfurization system, and the energy consumption of its key equipment, the slurry circulation pump, accounts for about 60% of the entire desulfurization system. Generally, the energy consumption is reduced by changing the liquid-gas ratio of the a...

AI Technical Summary

Problems solved by technology

When the pH value is between 5.2 and 5.5, the change of the limestone slurry will lead to a large change in the pH value; when the pH value is between 6.0 and 6.2, even if the limestone slurry supply rate is greatly increased, the pH value amplitude is very small, and the absorption tower When the slurry is running in this area, a small deviation of the pH value may cause a lot of waste of limestone

[0010] Although these control methods are the current mainstream control strategies, they are not well adapted to production needs.

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