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Dust collector based on acoustic agglomeration and application thereof

A dust removal device, sound wave technology, applied in the direction of combination device, auxiliary pretreatment, gas treatment, etc., can solve the problems of difficulty in ensuring uniformity and poor versatility

Inactive Publication Date: 2017-08-11
HUADIAN QINGDAO POWER GENERATION COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to ensure uniform mixing of seed particles and smoke in this device
Two sound sources are installed in pairs, and can only be used at one or several (octave) frequencies. The versatility is poor, and it cannot be directly used on the flue of the power plant.

Method used

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  • Dust collector based on acoustic agglomeration and application thereof
  • Dust collector based on acoustic agglomeration and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as figure 1 As shown, the schematic diagram of the dust removal device based on acoustic agglomeration provided in this embodiment includes a device inlet 1, a device body 2 with gas flow performance and a device outlet 3, wherein the device body 2 between the device inlet 1 and the device outlet 3 A seed particle device 4 capable of generating atomized liquid droplets, a high-frequency sound wave generator 5 and a low-frequency sound wave generator 6 are arranged in sequence. When carrying out the dedusting process, the airflow to be dedusted is first introduced from the device inlet 1, and a large amount of dust particles carried in the airflow and the atomized liquid droplets sent by the seed particle device 4 are mixed with each other. Under the action of sound waves, due to the difference in mass, volume and state between atomized liquid droplets and dust particles, the vibration amplitude under the action of high-frequency sound waves is greatly different, re...

Embodiment 2

[0036] This embodiment is an improvement on the basis of Embodiment 1, wherein a multi-phase separation device 7 is also arranged between the low-frequency sound wave generator 6 and the device outlet 3, and a multi-phase separation device 7 is also arranged between the multi-phase separation device 7 and the low-frequency sound wave generator 6 Frequency adjustable sound wave generator8. The device provided by this embodiment is applied in the desulfurization tower of a power plant. It can be seen that the device inlet 1 is connected with the gas outlet of the desulfurization tower 9, and the device outlet 3 is connected with the chimney 10, so that the flue gas discharged from the desulfurization tower passes through the gas outlet provided by this embodiment. The device realizes the dust removal effect. In actual use, the number of high-frequency sound wave generator 5, low-frequency sound wave generator 6 and frequency-tunable sound wave generator 8 can be greater than 1, ...

Embodiment 3

[0039] Taking the installation of the dust removal device based on acoustic wave agglomeration provided by the present invention at a 300MW unit in a certain power plant as an example, the following steps are included:

[0040] 1. The flow velocity in the flue of the power plant is 15.6m / s, and the size of the inner wall of the flue where the demister is installed is 5.7m*4.6m;

[0041] 2. The particle size of PM2.5 soot at the outlet of the desulfurization tower at the test site is mainly distributed at 0.02 μm, and a sound source of 3kHz-12kHz is selected to promote the agglomeration of PM2.5 soot;

[0042] 3. According to the humidity of the flue gas, as long as the humidity of the flue gas does not exceed 5%, a set of seed particle devices is arranged in the flue. The device consists of a plunger pump, a water tank, a water source control system, and a It consists of water source pipeline and 560 nozzles. The spray volume of each nozzle is 2.66kg / h, the total spray volume...

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Abstract

The invention discloses a dust removal device based on sound wave agglomeration and its application, comprising a device inlet, a device body with gas circulation performance and a device outlet, wherein a high-frequency sound wave generator is arranged in the device body between the device inlet and the device outlet generator and low frequency sound wave generator. The above devices are installed on the flue at the outlet of the desulfurization tower, and the dedusting effect on the dust of various particle sizes is very good, especially the removal efficiency of PM2.5 and PM10 exceeds 85%. The equipment for SO in the flue gas 2 and SO 3 The removal efficiency is more than 20%.

Description

technical field [0001] The present invention relates to a dedusting device based on acoustic agglomeration and its application, in particular to a sonic dedusting device installed on the outlet flue of a desulfurization tower for thermal power, iron and steel, coal chemical industry, building materials and other related fields. Background technique [0002] With the progress of the society and the development of the economy, the pollutant discharge in the flue gas of coal-fired boilers in thermal power plants, iron and steel, coal chemical industry, building materials and other related fields, and the pollution of the atmospheric environment have been widely concerned by people, so the pollution can be effectively reduced It is a severe challenge for the sustainable development of my country's energy sector to improve its impact on the environment. [0003] At present, the dust removal equipment commonly used in industry mainly includes cyclone separator, electrostatic precip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D51/08B01D51/04B01D50/00B01D53/78B01D53/50
CPCB01D51/08B01D50/00B01D51/04B01D53/507B01D53/78B01D2257/80B01D2258/0283
Inventor 苏振勇刘斌谢召祥夏瑞芳王敬福解建坤杨庆宇邹怡然
Owner HUADIAN QINGDAO POWER GENERATION COMPANY
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