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

A technology for desulfurization wastewater and thermal power plants. It is applied in water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. It can solve the problems of high cost of chemical treatment, inability to remove chloride ions, and inability to recycle. , to reduce processing costs and equipment maintenance costs, improve dust removal effect, and save processing costs

Inactive Publication Date: 2014-11-19
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

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Experimental program
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Effect test

Embodiment 1

[0024] Embodiment 1: Treatment of thermal power plant desulfurization waste water evaporation tower, such as figure 1 As shown, it includes an outlet flue 1, a mechanical filter 2, an evaporation tower cylinder body 3, an atomizing nozzle 4, an air nozzle 5, a scraper slag remover 6, and an inlet flue 7. The waste water evaporation tower uses evaporation to dry Tower effect, for desulfurization wastewater or other wastewater with high salt content that is difficult to recycle, it is first atomized through the atomization nozzle, and then evaporated and solidified in the evaporation tower.

[0025] There is a flue gas outlet on the top of the evaporation tower body 3, the flue gas outlet shown is connected with an outlet flue 1, the bottom of the outlet flue 1 is located at the upper part of the evaporation tower body 3, and the bottom of the outlet flue 1 A mechanical filter 2 is arranged on the top, and the mechanical filter 2 can be types such as shutters, filter screens or ...

Embodiment 2

[0037] Embodiment 2: Considering the actual situation of flue arrangement in industries such as iron and steel, papermaking and coal gasification, it is possible to consider using the attached Figure 4 The desulfurization waste water evaporation tower structure shown in , the desulfurization waste water evaporation tower structure and the treatment thermal power plant desulfurization waste water evaporation tower structure in embodiment 1 have only the following differences:

[0038] 1. The bottom of the outlet flue 1 extends all the way to the cylinder body 3 of the evaporation tower, specifically the part between the atomizing nozzle 4 and the tuyere 5 in the cylinder body 3 of the evaporation tower. Under the action of gravity, the high-temperature flue gas entering the evaporation tower body 3 from the inlet flue 7 forces the airflow to descend, and because the bottom of the outlet flue 1 is located at the lower part of the evaporation tower body, under its draft and high ...

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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...

Claims

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Application Information

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IPC IPC(8): C02F1/12C02F1/16
Inventor 唐强杨菊山杨仲卿张力冉景煜邵冰
Owner CHONGQING UNIV
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