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Power plant desulfurization wastewater bypass treatment system and method and flue gas treatment system and method

A technology for desulfurization wastewater and power plants, applied in chemical instruments and methods, separation methods, heating water/sewage treatment, etc., can solve the problems of high treatment costs, non-recyclable products, secondary pollution, etc., to avoid secondary pollution, Reduction of processing costs and energy saving effects

Inactive Publication Date: 2016-08-24
SHANGHAI LONGKING ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the processing cost of this treatment method is relatively high, and the obtained product cannot be recycled, and may cause secondary pollution

Method used

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  • Power plant desulfurization wastewater bypass treatment system and method and flue gas treatment system and method
  • Power plant desulfurization wastewater bypass treatment system and method and flue gas treatment system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] figure 1 Disclosed is the first embodiment of the system for treating desulfurization wastewater in a power plant bypass of the present invention, including: a main flue 11; a spray water tank 12 for storing desulfurization wastewater; a water pump 13 for extracting desulfurization wastewater in the spray water tank ; An air compressor 14 for atomizing and spraying desulfurization wastewater by compressing air; an atomization spray device 15 for spraying atomized desulfurization wastewater; an induced draft fan 16 for drawing flue gas from the main flue; An evaporator 17 for evaporating atomized desulfurization wastewater; an inlet baffle 18 for controlling the flue gas flux; and an outlet baffle 19 for controlling the flue gas flux.

[0051] The water outlet of the spray water tank 12 is communicated with the water inlet of the water pump 13; the water outlet of the water pump 13 is communicated with the atomizing spray device 15; the outlet of the air compressor 14 is...

Embodiment 2

[0056] Compared with the first embodiment, the improvement of the second embodiment is that the power plant bypass treatment system for desulfurization wastewater disclosed in the second embodiment also includes: a desulfurization wastewater pretreatment device for pretreating the desulfurization wastewater, the desulfurization wastewater pretreatment The treatment device communicates with the spray water tank.

[0057] After the desulfurization wastewater is pretreated by the desulfurization wastewater pretreatment device (such as softening treatment and concentration treatment, etc.), it is convenient for the atomization, spraying and evaporation of the desulfurization wastewater in the subsequent process.

Embodiment 3

[0059] Compared with Embodiment 1, the improvement of Embodiment 3 is that in the system for treating desulfurization wastewater by the power plant disclosed in Embodiment 3, the atomization spraying device is arranged on the top of the evaporator, and the atomized desulfurization wastewater Small droplets are sprayed in the evaporator from top to bottom; the atomization spray device adopts a high-pressure gas-liquid two-phase flow alloy nozzle; and the evaporator is a cylindrical evaporator, and the cylindrical evaporator is arranged horizontally. CFD flow field simulation is the basic setting.

[0060] In this embodiment, the uniformity of the flow field in the evaporator is effectively improved, which further facilitates the complete evaporation of the desulfurization wastewater in the evaporator.

[0061] Of course, in other embodiments, the position of the atomizing spray device in the evaporator can also be adjusted according to needs, such as being arranged on the side ...

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Abstract

The invention discloses a power plant bypass treatment system and method for desulfurization wastewater, and a flue gas treatment system and method. The power plant bypass system for desulfurization wastewater treatment includes: main flue, spray water tank, water pump, air compressor, atomization spray device, induced draft fan, evaporator, inlet baffle and outlet baffle; water pump and spray water tank respectively , The atomizing spray device is connected; the air compressor is connected with the atomizing spray device; the atomizing spray device is set in the evaporator; the first end of the main flue is connected with the induced draft fan; between the duct and the induced fan; the induced fan communicates with the evaporator; the evaporator communicates with the second end of the main flue; the outlet baffle is set between the evaporator and the main flue; end flows to its second end. The power plant bypass treatment system and method for desulfurization wastewater and the flue gas treatment system and method of the present invention realize zero discharge of desulfurization wastewater in the process of power plant flue gas treatment and avoid secondary pollution caused by desulfurization wastewater.

Description

technical field [0001] The invention relates to the technical field of desulfurization wastewater treatment, in particular to a power plant bypass treatment system and method for desulfurization wastewater, and a flue gas treatment system and method. Background technique [0002] my country is a country dominated by thermal power generation, and the harmful gases produced by coal combustion in thermal power plants seriously endanger the natural environment and human health. To reduce SO 2 At present, most thermal power plants in China have installed flue gas desulfurization devices, among which limestone-gypsum wet flue gas desulfurization devices are the most widely used, accounting for about 90% of the capacity of installed desulfurization units. [0003] The limestone-gypsum wet desulfurization process uses limestone as the desulfurization absorbent, crushes the limestone and mixes it with water, grinds it into a powder, and makes an absorption slurry. The absorption sl...

Claims

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Application Information

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IPC IPC(8): B01D50/00C02F1/04
CPCB01D50/00C02F1/04
Inventor 何永胜吴文辉陈泽民任世中吴景辉张朦
Owner SHANGHAI LONGKING ENVIRONMENTAL PROTECTION
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