Boiler flue gas wet electrostatic precipitator

Abstract

The invention discloses a wet electrostatic precipitator for boiler smoke. An insulation chamber is arranged on the top of a shell, an electrode fixing device is arranged in the insulation chamber, a charge device is arranged on one side of the insulation chamber, an inlet reducer pipe is arranged on the left of a dust chamber, and an outlet reducer pipe is arranged on the right of the dust chamber. The inlet reducer pipe is provided with air flow distribution plates which are connected with a distribution plate rapping device, the air flow distribution plates comprise the first air flow distribution plate, the second air flow distribution plate and the third air flow distribution plate, flow guide plates are arranged on the lower portion of the second air flow distribution plate, and flow guide plates are arranged on the third air flow distribution plate. Discharging cathodes and dust collection anodes are arranged in the dust chamber, the upper portions of the discharging cathodes are connected with the charge device through the electrode fixing device, a spraying device is arranged at the top of the dust chamber, and the lower portion of the dust chamber is connected with ash buckets. When the wet electrostatic precipitator is adopted for boiler smoke dust removal, boiler smoke evenly enters the dust chamber, dust is adsorbed by the dust collection anodes under the action of charges of the discharging cathodes, the dust adsorption effect is good, and the dust removal efficiency is high.

Description

technical field [0001] The invention relates to the field of dust removal, in particular to a boiler flue gas wet electrostatic precipitator. Background technique [0002] Wet electrostatic precipitator, usually referred to as WESP, is used to deal with new dust removal equipment containing tiny amounts of dust and particles. It is mainly used to remove dust, acid mist, water droplets, aerosols, odor, PM2.5 and other harmful substances in wet gas. , is an ideal equipment for controlling air dust pollution. WESP has high dust removal efficiency, small pressure loss, simple operation, low energy consumption, no moving parts, no secondary dust, low maintenance cost, short production downtime, can work below the flue gas dew point temperature, and can be used with The combination of other flue gas treatment equipment and the diversification of design forms have advantages. [0003] After wet desulfurization of boiler flue gas in power plants and steel mills, the dusty flue gas...

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Problems solved by technology

[0004] When the flue gas enters the wet electrostatic precipitator from the flue, due to the unreasonable structure of the air inlet and the precipitator itself, the air flow of the flue gas is unevenly distributed in the precipitator

The impact of uneven air distribution on the electrostatic precipitator includes the following aspects: 1. The amount of dust accumulated in the dust collector is uneven. When spraying with water, the place with a large amount of dust will not be cleaned completely; 2. Local air flow Secondary dust generation; 3. The cathode electrode in the area with slow air flow has too much ash accumulation, which inhibits the corona generation of the cathode electrode; 4. Due to the low temperature in the area with low air flow, it is easy to cause local shell corrosion

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