Water internally-distributed type flexible dust collecting electrode device

Abstract

The invention discloses a water internally-distributed type flexible dust collecting electrode device, comprising a driving shaft, a driven shaft and flexible dust collecting electrodes, wherein the flexible dust collecting electrode is wound on the driving shaft and the driven shaft; a plurality of water distributing devices are arranged between the flexible dust collecting electrodes between the driving shaft and the driven shaft; the driving shaft is connected with a power device; and electrodes are arranged on at least one side outside the flexible dust collecting electrodes. According to the water internally-distributed type flexible dust collecting electrode device disclosed by the invention, the dust collecting electrodes employ two arrangement modes of motion and fixation; the water distributing devices are steel pipes with pores or grooves at a certain degree and are disposed between the flexible dust collecting electrodes so as to distribute water from the center of the dust collecting electrodes, and the water distributing devices are also used as support structures of the flexible dust collecting electrodes. The water internally-distributed type flexible dust collecting electrode device can realize uniform distribution and automatic and efficient ash removal of water films, and can avoid corrosion problem of metallic dust collecting electrodes, thus guaranteeing a wet type static dust collector to run steadily, economically, safely and reliably, and realizing efficient capturing of micro-fine particulate matters.

Description

technical field [0001] The invention relates to a flue gas pollution treatment technology, in particular to a water-distributed flexible dust collecting electrode device applied to a wet electrostatic precipitator. Background technique [0002] At present, with the official implementation of the "Pollutant Emission Standards for Thermal Power Plants" (GB132232011) and the official release of the "Ambient Air Quality Standards" (GB30952012), the emission control of ultrafine particles is officially launched. As an important emission source of particulate matter in the atmosphere, coal-fired power plants are all equipped with dust collectors, but dry electrostatic precipitators (ESP) are commonly used. The dust collectors of this kind of dust collectors operate in a dry state. The collection efficiency of dust particles with high specific resistance that is easy to form back corona is low, and for fine particles below 10 μm (especially 2.5 μm), it is difficult to charge the fi...

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Problems solved by technology

Since this kind of process device only installs the water distribution device on the upper end of the dust collecting pole, the water film can only extend downward from the upper end. The problem of insufficient thickness affects the dust collection efficiency of the dust collector; in addition, in the above-mentioned patents, the dust removal of the dust collector is only achieved by the difference in the surface tension and shrinkage ratio between the dust cake layer and the dust collector, which may easily lead to incomplete dust removal. Affect the follow-up dust removal efficiency

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