System for synergistically removing flue gas fine particles and sulfur trioxide from desulfurization wastewater

Abstract

The invention relates to the technical field of thermal power desulfurization wastewater resource utilization. The invention discloses a system for synergistically removing flue gas fine particles and sulfur trioxide from desulfurization wastewater. In the system, 80-150 DEG C flue gas between a dust remover and a wet desulfurization device is in contact with desulfurization wastewater fog drops treated by a triple box and a solid-liquid separation device, and the formed high-humidity low-temperature flue gas increases the volume percentage content of the flue gas water vapor of the wet desulphurization device to 10-15% and reduces the temperature to below 80 DEG C. Meanwhile, the wet desulphurization process is employed for optimization, so the flue gas is supersaturated in the wet desulphurization process, the supersaturated water vapor is nucleated and condensed on the surfaces of fine particles and SO3, and the fine particles / SO3 is condensed, grown and efficiently removed, and the safe discharge of desulfurization wastewater is realized. In addition, the system for synergistically removing flue gas fine particles and sulfur trioxide from desulfurization wastewater provided by the invention is simple in equipment and smaller in influence on unit operation.

Description

Technical field[0001]The present invention relates to the field of thermal electrical deinterleasculfur wastewater resource utilization, in particular, to a system of desulfurization wastewater associations de-use tobacco gas fine particles and trioxide.Background technique[0002]At present, my country is mainly based on the main fuel of fire power generation, and SO will be produced during combustion.3, Pollutants such as particulate matter cause huge pressure on the environment. In order to control the emissions of coal-fired contaminants, my country has enacted "Air Power Plant Atmospheric Pollutant Emission Standard" (GB13223-2011) in 2011 (GB13223-2011). Limestone - gypsum - Degrelation Process is widely used due to its wide range of applicability, ripening, and high reliability. However, a large amount of wastewater is generated during the wet desulfurization process, and since the desulfurization wastewater has the characteristics of high corrosion resistance, high turbidity, ...

AI Technical Summary

Problems solved by technology

However, in the process of wet desulfurization, a large amount of wastewater will be generated, and because the desulfurization wastewater has the characteristics of strong corrosion, high turbidity, excessive heavy metal content, high salt content, large fluctuations in water quality, and unstable water volume, it is difficult to treat

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