Welding dust prevention of secondary dust float in the sky

Measures to prevent secondary dust float in the sky of welding welding filter dust collector with air leakage or air flow without the electric field, but through the bypass phenomenon in a hopper, and causes of secondary float in the sky. To prevent loss of secondary dust float in the sky, the following measures can be a. Keeping the interior of the electrical precipitator in good condition and make the air flow uniform distribution; b。 Make the design of dust collecting electrode has good aerodynamic shielding performance; c。 Grouping by a sufficient number of high voltage electric field, and will be a few group electric series, balanced by turns shaking grouping of high voltage electric field; d。 Strictly prevent the circulation of ash hopper air has the phenomenon and the air leakage. Corona line hypertrophy corona line more fine, generate electricity scene, the more intense, but because of the corona polar ion around the area has a small dust particles to obtain a positive charge, negative polarity to corona polar motion and deposition on the corona line, if the dust adhesion sex very strong vibration is not easy to down, then corona line dust is piling up, the electric line became thicker, the scene is greatly reduce the effect of corona discharge, the formation of corona wire hypertrophy. Eliminate the phenomenon of corona wire hypertrophy, can be appropriately increase electrode shaking force, or on a regular basis to cleaning of electrodes, electrode kept clean. Corona wire mast for the following reasons: a. Static charges, welding filter dust produced by static charges with adhesion, the maximum is 280 n/m2; b。 Process production equipment or stop running under low load, the temperature of the electrostatic precipitator is lower than the dew point, water or acid condensation between dust particles and dust particles and between electrodes, to dissolve the surface, when the normal operation of equipment again, dissolved matter solidified into agglomerate, produce great adhesion; C。 Due to the nature of the dust, such as large bondability, hydrolysis and adhesion or due to intermolecular force and adhesion; d。 Between dust and dust particles and the electrode with water or acid condensation, due to the liquid surface tension and adhesion.

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