Energy-saving and environment-friendly limestone-gypsum wet flue gas desulfurizing tower

Abstract

The invention relates to the field of flue gas desulfurizing, in particular to a limestone-gypsum wet flue gas desulfurizing tower. A first liquid extracting pump and a liquid extracting pipe are utilized; limestone slurry is conveyed into a flowing cavity through a liquid conveying pipe. Finally, an atomizing nozzle is used for spraying; the area of the desulfurizing tower at the lower part of apartition plate is filled with atomized limestone slurry; flue gas entering the desulfurizing tower through a flue gas pipe and an air blower can be in more uniform and complete contact with the slurry; the reaction degree of the slurry and the flue gas is improved; the sulfur removal efficiency is improved; by continuously reacting the flue gas with the slurry, generated new liquid beads are gathered at the conical cylinder part of the desulfurizing tower, and enter an oxidation treatment box through a conveying pipe, oxygen is supplied through an oxygen supply fan, substances entering the oxidation treatment box are subjected to oxidation treatment in the oxidation treatment box to generate gypsum, redundant liquid can be conveyed into a limestone slurry cylinder through a second liquidsuction pump to be recycled, energy is saved, and the environment is protected.

Description

technical field [0001] The invention relates to the field of flue gas desulfurization, in particular to an energy-saving and environment-friendly limestone-gypsum wet flue gas desulfurization tower. Background technique [0002] In recent years, clean combustion technologies for coal-fired thermal power, chemical industry, and heating have developed rapidly, and desulfurization and denitrification devices have become necessary equipment. So far, almost all thermal power plants are equipped with desulfurization and denitrification equipment. Limestone-gypsum wet flue gas desulfurization The process is a commonly used flue gas desulfurization method. The limestone-gypsum flue gas desulfurization system is installed at the end of the flue of the combustion boiler and after the dust removal system. The limestone (CaCO3) slurry is used as a detergent to wash the flue gas in the desulfurization tower. , so as to remove SO2 in the flue gas. [0003] The invention with application ...

AI Technical Summary

Problems solved by technology

Therefore, an object of the present invention is to provide an energy-saving and environment-friendly limestone-gypsum wet flue gas desulfurization tower, which can solve the problem that the water flow from the spray pipe needs to pass through the limestone reaction when the desulfurization tower is used for limestone gypsum wet desulfurization. The reflux of waste water is not convenient for the reflux of waste water, and the reactants are constantly consumed during the treatment process, which is not convenient for the addition of limestone reactants.

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