Ultrasonic-assisted spraying drainage and atomization dust removal device

Abstract

The invention relates to an ultrasonic-assisted spraying drainage and atomization dust removal device which is applied to the dust removal field of small- and medium-size coal-fired boilers or brick kilns. The ultrasonic-assisted spraying drainage and atomization dust removal device mainly comprises a smoke elbow, a flange plate group, a spraying drainage instrument, an ultrasonic generator, a sampling analyzer, a timing cleaner, a conical filter net, a condensation and separation chamber, a sewage drainage pipe and a bracket, wherein during working, the spraying drainage instrument sucks smoke into a cleaning solution for fully mixing and washing the smoke, so that most smoke dust can be cleaned away; meanwhile, an alkaline solution and acidic gas are subjected to neutral reaction to remove harmful gas; residual fine particles are condensed to be enlarged under the action of ultrasonics and then are washed and filtered again; finally qualified smoke is discharged; the sampling analyzer can send a signal according to the measured smoke concentration to control pressure of spraying liquid and the sound intensity and the frequency of the ultrasonics, so that the optimal cleaning effect can be achieved. The dust removal device disclosed by the invention is particularly good in effect in removing the harmful gas and the fine particles from the smoke.

Description

Technical field: [0001] The invention relates to an ultrasonic-assisted jet drainage atomization dedusting device, which is used in the dust removal field of small and medium-sized coal-fired boilers or brick kilns. flow, and adjust the sound intensity and frequency of the ultrasonic generator to achieve the best dust removal effect. Background technique: [0002] At present, small and medium-sized boilers or brick kilns still use coal as the main energy source, and coal is mainly composed of elements such as carbon, hydrogen, oxygen, nitrogen, sulfur and phosphorus. Nitrogen and sulfur are common harmful components in coal. The sulfide and nitrogen oxides produced by the coal combustion of small and medium-sized boilers without dust removal equipment are discharged into the atmosphere, increasing the acidity of the air, and at the same time emitting a large amount of black smoke, which seriously pollutes the air. [0003] At present, the dust removal methods commonly used...

AI Technical Summary

Problems solved by technology

[0004] The resistance of bag-type dust removal is relatively large, and it is impossible to rely on the chimney for natural exhaust, so a separate exhaust fan is required. In addition, it costs tens of thousands of yuan to replace the filter bag each time, and if the temperature is too high, it is easy to burn the bag, and if the temperature is too low, it is easy to burn the bag

[0005] Cyclone centrifugal dust collection uses the centrifugal force of high-speed rotation to gather and collect particles. The structure is complex, and the effect of removing small and slight particles is not ideal.

[0006] The electrostatic precipitator method is not as demanding as the bag filter, and the thermal pressure difference of the chimney can be used to exhaust the air naturally. However, the problem of over-temperature deformation and corrosion of the electrode plate has always been difficult to solve, and the one-time investment is relatively large

Due to the inhomogeneity of the injection, more flue gas escapes and cannot effectively remove dust. In addition, research on the matching of the nozzle atomization principle, dust-containing flue gas discharge, atomization jet velocity, and droplet diameter has been relatively intensive. Less, resulting in unsatisfactory dust removal efficiency

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