Method for preventing bubbling of calcium-based wet desulphurization absorption tower

Abstract

The invention relates to a method for preventing bubbling of a calcium-based wet desulphurization absorption tower. The calcium-based wet desulphurization absorption tower comprises a calcium-based wet desulphurization absorption tower body, an accident slurry box, an ultraviolet lamp, a carbon dioxide or nitrogen cylinder, a sodium hypochlorite storage tank, a newly-built slurry storage tank anda dosing and slurry turning bypass. The invention has the beneficial effects that during unit maintenance, bacterial reproduction can be effectively inhibited, enrichment of protein generated after microorganism death during normal operation of the unit in the tower is greatly reduced, foam is broken as soon as possible, the irregular foam overflow phenomenon of the absorption tower can be prevented. The output of a recirculation pump of the calcium-based wet desulphurization absorption tower is ensured, so that the liquid-gas ratio in the calcium-based wet desulphurization absorption tower isensured, the desulphurization efficiency is ensured, and finally, the emission of the unit is ensured to be within a limit value, and the output of the unit has positive significance for improving the reliability and the operation stability of the unit and ensuring the normal operation of environmental protection facilities.

Description

technical field [0001] The invention belongs to the technical field of desulfurization, and in particular relates to a method for preventing bubbling of a calcium-based wet desulfurization absorption tower by adjusting catalyst usage, bactericide, light and gas filling devices to inhibit bacterial growth. Background technique [0002] In the wet flue gas desulfurization process, the absorption tower will contain the acidic substances (SO 2 and HCl) contact with alkaline slurry, react and absorb. where SO 2 The mass transfer may be affected by gas film resistance and liquid film resistance, which depends on the SO in the flue gas 2 concentration, liquid-to-gas ratio, and reactants used. SO in flue gas 2 When the concentration of is the independent variable, when limestone is used as the desulfurization reactant, increasing the liquid-gas ratio is an effective means to improve the desulfurization efficiency. However, the bubbling phenomenon that occurs irregularly in the ...

AI Technical Summary

Problems solved by technology

At present, experiments have proved that the protein concentration sufficient to foam has accumulated in the overflow foam, so it can be judged that the reason for the overflow of the slurry is that after a large number of bacteria in the absorption tower multiply, a protein source is provided for the generation of foam, thereby increasing the foam Persistence, resulting in slurry foam overflow

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