Waste water evaporating device and method using same

Abstract

The invention relates to a waste water evaporating device and a method using the same. The device comprises a waste water pot, a waste water metering pump connected with the waste water pot, a waste water conveying pipeline led out from the waste water metering pump, an atomizing nozzle communicated with the waste water conveying pipeline, an electric dust remover accommodating the atomizing nozzle, a raw gas channel which is connected with one end of the electric dust remover and used for inputting raw flue gas, a desulfurizing and absorbing tower connected with the other end of the electric dust remover and a separated solid conveying pipeline connected with the electric dust remover, wherein the raw flue gas is provided by a boiler. The waste water evaporating device needs less equipment, does not need dosing, saves investment and realizes the zero discharge of waste water, and the process needs a small occupation area, which can save space. Through the comprehensive regulation matching with the gas load and the desulfurization waste water flow, the time and the flow of the desulfurization waste water sprayed into polar plates of the electric dust remover are controlled, which has the wetting effect on electric dust removal, improves the electric dust removal efficiency and also prevents oversize instantaneous waste water volume from influencing the operation of the electric dust remover.

Description

technical field [0001] The invention belongs to the technical field of flue gas desulfurization equipment manufacturing, and relates to a waste water evaporation treatment device for wet flue gas desulfurization. Background technique [0002] Wet flue gas desulfurization technology is the most commonly used flue gas desulfurization technology in my country at present. A certain amount of wastewater will be generated during the desulfurization process using this technology. The discharge will cause great harm to the environment, and must be discharged after being treated up to the standard. The currently known wet flue gas desulfurization wastewater treatment adopts the process of dosing treatment, which includes five process steps: neutralization of wastewater, removal of heavy metal ions and fluoride ions, flocculation, precipitation, and clean water discharge. The process requires a lot of equipment, the process is complicated, and a large amount of chemicals needs to be a...

AI Technical Summary

Problems solved by technology

The process requires a lot of equipment, the process is complicated, and a large amount of chemical agents need to be added, so the cost is high

At the same time, the wastewater treatment process has a high concentration of chloride ions (Cl - ) does almost no removal, which is not conducive to the reuse of desulfurization wastewater, and excessive Cl - have an adverse impact on the environment

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