A Spiral Nozzle Applicable to Wet Electrostatic Precipitator and Its Arrangement

Abstract

The invention provides a spiral spray nozzle applicable to a wet electric precipitator and an arrangement way of the spiral spray nozzle, aims to solve the technical problems of ultrafine atomization effect achievement, optimal arrangement of the spray nozzle and improvement on the dust-removing efficiency, and belongs to the technical field of smoke gas treatment. The spiral spray nozzle is characterized by comprising a spiral spray head and a spraying shell, wherein the spiral spray head is arranged in the inner cavity of the spraying shell; the bottom of the spraying shell is a spraying surface which adopts an outwards-convex symmetric double-spherical surface structure; a plurality of spray holes which are perpendicular to the spherical surfaces of the spraying surface in the radial direction are uniformly formed; the spraying angle beta is less than or equal to 180 degrees. The spiral spray nozzle provided by the invention is applicable to the wet electric precipitator; spraying particles are tiny and uniform and the spraying angle and the spraying range are large, so that the flushing effect of the dust collecting electrode of the wet electrostatic precipitator can be effectively improved, the number of the spray nozzles can be reduced, the water consumption can be effectively reduced, wear of the spray nozzle can be avoided, the dust-removing efficiency is improved, and the equipment investment and the running cost are reduced.

Description

technical field [0001] The invention relates to a structural improvement of a spiral nozzle suitable for a wet electrostatic precipitator, and an improvement of the optimal arrangement of the spiral nozzle in the wet electrostatic precipitator, belonging to the technical field of flue gas treatment. Background technique [0002] The wet electrostatic precipitator is developed on the basis of overcoming the disadvantages of the water spray precipitator and the electrostatic precipitator. Its working principle is the same as that of the ordinary precipitator, mainly involving the charging of suspended particles, the migration and capture of charged particles in the electric field. The three basic processes are collection and removal of the entrapment from the surface of the dust collector. The difference between wet electrostatic precipitator and dry electrostatic precipitator is that the wet electrostatic precipitator is equipped with a nozzle flushing device in the electric ...

AI Technical Summary

Problems solved by technology

The arrangement position of the nozzles in the prior art also often has the following problems: the distance between the nozzles is too large (twice or more than twice the dust collection channel), which will easily cause the surface of some dust collection poles to not be completely covered by the spray liquid, resulting in Spray "dead angle", unable to form a complete smooth water film (see figure 2 , the nozzle spacing is too large); if the number of nozzles increases, the nozzle spacing is less than twice the dust collection channel, although it can avoid the appearance of "dead angles" in spraying, but it is easy to overlap the spraying range and spray unevenly (see image 3 , the nozzle spacing is too small), resulting in increased water consumption and increased operating costs

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