wet electrostatic precipitatorWidely used in industrial fields such as oil fired boiler plants and thermal power plants. wetElectrostatic precipitatorIt is possible to remove particles and dust from boiler exhaust gas, thereby significantly reducing the amount of smoke and dust emitted into the atmosphere to meet national emission standards.

Insulation boxIt's wet electricitydust collectorAn important component in the system, its main function is to separate the housing, cathode system, and anode system from each other. The insulation box heating device adopts an electric heater. The technical solution includes a wet electrostatic precipitator insulation box and a heating device. Composed of components such as battery packs and relays. The wet electrostatic precipitator insulation box is equipped with heating devices on the left and right inner walls.

The function of the wet electrostatic precipitator insulation box is to ensure that the high-voltage DC insulation of the shell is maintained. According to the scale, each wet electrostatic precipitator has 2-4 insulation boxes, and the high-voltage power supply is insulated through insulation bottles and shells. Therefore, in addition to heating, oil seals, sand seals, or gas seals are also used to reduce contact with the porcelain bottle.

The insulation box of wet electrostatic precipitators mostly adopts the insulation type of hot air blowing. The original insulation box must use sealed hot air, and the source of hot air is provided by a fan for blowing, and another box type heater for heating and sealing. The power of the fan itself is relatively high, and heating the flowing air to 70 ℃~80 ℃ by the heater will consume a lot of electricity, resulting in significant energy waste. The insulation box for wet electrostatic precipitator requires an external insulation layer to reduce heat loss. The insulation installation needs to be carried out on-site, which wastes operation time and cannot guarantee quality.

The junction box of the wet electrostatic precipitator can isolate the high voltage direct current of 50KV~80KV from the outside, providing insulation protection function. Each wet electrostatic precipitator insulation box is equipped with 3 electric heating tubes, with specifications of 220V, 1.0KW, and star connection method; Configure one thermistor with a specification of PT100. Absolute air sealing is achieved through the enclosed inner cavity of the inner cylinder, which can block the flow of smoke inside the tubular wet electrostatic precipitator and the insulation box without the need for hot air blowing. The built-in electric heating tube and thermal resistor form a closed control circuit to heat the static air inside to 120 ± 20 ℃, and use hot air for insulation to avoid spark discharge caused by condensation inside the insulation box. Using insulator porcelain sleeves for insulation boxes andPipe type wet electrostatic precipitatorThe high voltage isolation effect of the internal flue gas is achieved by using hot air at 120 ± 20 ℃ outside the insulator porcelain sleeve. The hot air radiates heat inward through the peripheral wall of the insulator porcelain sleeve, causing the gas inside the insulator porcelain sleeve to reach a high temperature, thereby avoiding the condensation of flue gas on the inner wall of the insulator porcelain sleeve and causing discharge.

The increasingly severe forms of heavy metal pollution such as haze, aerosols, and PM2.5 in our country encourage enterprises to achieve ultra-low emissions. In response to the national call, more and more coal-fired power plants are installing large tubular wet electrostatic precipitators to remove acid mist and fine particulate dust from flue gas, but meet the national emission standards.