Device and method realizing synergic effects of waste heat utilization, desulfurization wastewater zero-emission and smoke plume removal

A technology of desulfurization wastewater and zero discharge, applied in chemical instruments and methods, separation methods, heating water/sewage treatment, etc., can solve the problems of easy blockage of pipelines, high operating costs, high operating costs, etc., and achieve high operating costs. Low, the effect of investment cost reduction

Pending Publication Date: 2018-07-17
NANJING CHANGRONG ACOUSTIC INC +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] One of the purposes of the present invention is to realize zero discharge of desulfurization wastewater by making full use of the waste heat of the flue gas, which solves the problems of high operating costs and complicated routes of the existing process
[0009] The second object of the prese

Method used

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  • Device and method realizing synergic effects of waste heat utilization, desulfurization wastewater zero-emission and smoke plume removal
  • Device and method realizing synergic effects of waste heat utilization, desulfurization wastewater zero-emission and smoke plume removal
  • Device and method realizing synergic effects of waste heat utilization, desulfurization wastewater zero-emission and smoke plume removal

Examples

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Example Embodiment

[0046] Example 1

[0047] The specific implementation of the present invention based on a waste heat utilization collaborative desulfurization wastewater zero discharge and smoke plume removal method will be described in detail below with reference to the accompanying drawings.

[0048] like figure 1 As shown in the figure, it is a schematic diagram of the waste heat utilization cooperative desulfurization waste water zero discharge and smoke plume removal device provided in this embodiment. The device includes a boiler 1, an air preheater 2, a dust collector 3, a desulfurization tower 4 and a chimney connected by pipelines in sequence 7. The desulfurization wastewater outlet of the desulfurization tower 4 is connected to the wastewater sedimentation tank 8, and the wastewater outlet of the wastewater sedimentation tank 8 is connected to the wastewater concentration tower 13 through a pipeline, and the concentrated wastewater outlet of the wastewater concentration tower 13 is ...

Example Embodiment

[0051] Example 2

[0052] This embodiment is a further improvement on the basis of Embodiment 1, as figure 2 As shown, in the connecting pipe between the desulfurization tower 4 and the chimney 7, a sonic agglomeration device 5 and a demister 6 are arranged in sequence along the direction from the desulfurization tower 4 to the chimney 7, and the sound waves emitted by the sonic agglomeration device are used to stimulate the small liquid in the flue gas flow. The droplets undergo acoustic wave reunion to form a large liquid, which is then removed by the demister 6, thereby achieving a good plume reduction effect.

[0053] A circulation pump 11 is arranged on the pipeline between the wastewater sedimentation tank 8 and the wastewater concentration tower 13, and the circulation pump 11 is connected to the water supply pump 9 through the pipeline, and the circulation pump 11 transports the wastewater provided by the water supply pump 9 to the ultrasonic atomizing nozzle 12 for f...

Example Embodiment

[0055] Example 3

[0056] Utilize the device provided by the invention to carry out the method for zero discharge of desulfurization wastewater and smoke plume removal, comprising the following steps:

[0057] Step 1, the desulfurization wastewater generated after desulfurization of the flue gas in the desulfurization tower is first transported to the wastewater sedimentation tank, and the suspended matter sedimentation process is completed in the sedimentation tank;

[0058] Step 2: The waste water supernatant after preliminary precipitation enters the waste water concentration tower at night and is atomized through the ultrasonic atomizing nozzle. The atomized solid-liquid mixed droplets are mixed with the low-temperature flue gas after the dust collector to exchange heat and complete part of the waste water. evaporative concentration;

[0059] Step 3: The wastewater concentrate at the outlet of the wastewater concentration tower enters the wastewater flash tower and is ato...

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Abstract

The invention discloses a device and a method realizing synergic effects of waste heat utilization, desulfurization wastewater zero-emission and smoke plume removal, the device comprises a boiler, anair preheater, a dust remover, a desulfurization tower and a chimney which are sequentially connected through a pipeline, a wastewater sedimentation tank, a wastewater concentration tower and a wastewater flashing tower simultaneously are connected to corresponding equipment in the device, a high-temperature gas required in the working process of the wastewater flashing tower and the wastewater concentration tower is taken from high-temperature flue gas during the operation of the device; and generated gases are sent into the dust remover for dust removal circulation. An acoustic wave agglomeration device and a demister are disposed in a connecting pipe between the desulfurization tower and the chimney. The method comprises the steps of concentrating and flashing the high temperature fluegas in the process of operation of the desulfurization wastewater utilization device, and finally feeding the concentrated and flashed gas to the device for circulation, thereby achieving zero emission, discharged smoke plume can be reduced by use of synergic effects of the reduced flue gas temperature, the acoustic wave agglomeration device and the demister, and the goal of energy saving and environmental protection, wastewater zero-emission and exhaust emission reduction can be comprehensively realized.

Description

technical field [0001] The invention belongs to the technical field of realizing zero discharge of desulfurization wastewater and removing plume by using waste heat of flue gas, and in particular relates to a device and method for utilizing waste heat in cooperation with zero discharge of desulfurization wastewater and removing plume. Background technique [0002] Under the background of zero discharge of wastewater from coal-fired power plants, in order to improve the comprehensive utilization of water, power plant wastewater such as circulating water, sewage, and reverse osmosis concentrated water are all collected into the desulfurization system. Therefore, the quality of desulfurization wastewater is extremely poor, with high salt content, Properties such as easy corrosion have a serious impact on the environment. At present, power plants use the three-box method to precipitate and separate pollutants, but it is difficult to remove salt and Cl in wastewater. — , organi...

Claims

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Application Information

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IPC IPC(8): C02F1/16C02F1/12C02F1/06B01D51/08B01D45/12C02F103/18
CPCB01D45/12B01D51/08C02F1/048C02F1/06C02F1/12C02F1/16C02F2001/007C02F2103/18
Inventor 顾承真闻小明周德伟张玲丽邹怡然张荣初
Owner NANJING CHANGRONG ACOUSTIC INC
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