High-voltage electrostatic dust separator for industrial furnace

Abstract

The invention provides a high-voltage electrostatic dust separator for industrial furnace. The dust separator is equipped with an air inlet and an air outlet. The dust-separation electric field is formed by multiple vertical tubes, of which inner walls are used as duct-collecting pole plates, a corona wire arranged in the centre of the vertical tube, a high-voltage insulating ceramic bottle and a corona wire group suspension bracket arranged above the vertical tubes. The lower portion of the vertical tube is connected with an air-distributing barrel, one end of the air inlet is connected with a smoke dust discharge tube of the industrial furnace and the other end is connected with the air-distributing barrel. The lower portion of the air-distributing barrel is connected with a dust hopper of the dust separator, and a whirling guide plate extending into the air-distributing barrel is arranged at the air inlet connected with the air-distributing barrel. The other side of the air-distributing barrel corresponding to the extension line of the whirling guide plate is equipped with an air-distributing plate. The air-distributing barrel of the dust separator in the invention makes the dust-containing air be distributed more uniformly before entering a dust-separation unit. The two-dimensional herringbone air-distributing plate in the air-distributing barrel guides and accelerates the air such that the air flow move in the middle of the air-distributing barrel, which is in favour of uniform distribution of air flow in the air-distributing barrel. The invention has obvious dust collection effect, and the dust-separation rate can be more than 99%. The dust separator can capture sub-micrometre-sized particles of 0.1mm at high temperature, and is conveniently operated and managed, and simply maintained.

Description

technical field [0001] The invention relates to a high-voltage electrostatic precipitator for industrial kilns, which is mainly used for environmental treatment of industrial kilns and belongs to the technical field of industrial flue gas dust removal. Background technique [0002] Industrial kilns use coal as the main fuel, and are heat source equipment for firing and heat preservation of products. This kind of kiln consumes a lot of energy, emits serious dust and smoke, and pollutes the environment very seriously. At present, the environmental treatment of industrial kilns mainly adopts high-voltage electrostatic precipitators. On the premise of not changing the basic structure of the kiln, it is possible to install only smoke and dust collectors at the end of the industrial kiln, or install the chimney on the settling chamber. The hot gas in the chimney and the outside air form a thermal pressure difference, so that the airflow has a bottom-up flow trend. In the field of...

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Problems solved by technology

Due to the relatively large volume of this type of dust collector, the main problem is that the distribution of smoke and dust in the standpipe is uneven and the dust removal efficiency is low when the amount of smoke and dust discharge is relatively large.

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