Distillation drying tower for treating desulfurized waste water in thermal power plant

Abstract

The invention relates to a distillation drying tower for treating desulfurized waste water in a thermal power plant. The distillation drying tower comprises a distillation drying tower barrel which is communicated with an outlet flue on the top, wherein the distillation drying tower barrel is further communicated with an inlet flue; the center line of the inlet flue is externally tangent with an imaginary circle in the distillation drying tower barrel; the circular center of the imaginary circle is positioned on the center line of the distillation drying tower barrel; a circle of atomizing nozzles are at least formed in the inner wall of the distillation drying tower barrel and above the inlet flue along the height direction; a circle of tuyeres are formed below the inlet flue; the center lines of outlets of multiple atomizing nozzles among the circle of atomizing nozzles are externally tangent with the imaginary circle; the center lines of outlets of multiple tuyeres among the circle of tuyeres point to the imaginary circle in an inclined way. The distillation drying tower can treat waste water with high salt content, is simple in structure, can increase the humidity of inlet flue gas of an electric precipitator, can improve efficiency of the electric precipitator, achieves zero emission of the waste water in a real sense and reduces atmospheric pollution caused by dust particles.

Description

technical field [0001] The invention relates to the field of waste water treatment, in particular to the field of desulfurization waste water from thermal power plants and the field of waste water with high salinity that is difficult to treat in other industries, and in particular to an evaporation tower for treating desulfurization waste water from thermal power plants. Background technique [0002] The shortage of water resources and the environmental pollution of discharged wastewater have become a worldwide problem. Thermal power plants, as large water users, are very important to save water and reduce discharged wastewater in terms of economy and environmental protection. Therefore, the research and development of devices suitable for the production of thermal power plants and domestic sewage treatment and reuse, reducing the investment and operating costs of sewage treatment, and achieving the goal of zero discharge of wastewater have very important practical significan...

AI Technical Summary

Problems solved by technology

[0004] At present, traditional chemical treatment methods of neutralization, precipitation, flocculation, concentration and clarification are often used for desulfurization wastewater in thermal power plants. However, the cost of chemical treatment is high, and chemicals need to be added continuously, which is labor-intensive and cannot be recycled. Another chemical treatment method is required. Chloride ions still cannot be removed from wastewater

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