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What are the performance characteristics of electrostatic precipitators in industrial dust collectors?
Release time:2018-02-25
1. The optimal wide electrode spacing and specially configured electrode plates ensure a more uniform electric field strength and plate current distribution, increasing the drift velocity by up to 1.3 times. This expands the range of specific resistivity of dust that can be effectively collected to between 10¹ and 10¹⁴ Ω·cm, making it particularly suitable for capturing high-specific-resistivity dust from flue gases generated by fluidized-bed boilers, new-type dry-process cement rotary kilns, grate coolers, sintering machines, and similar sources. It also helps to mitigate or eliminate the back-corona phenomenon. 2. The domestically pioneered all-new RS corona wire boasts a maximum length of up to 15 meters. It features a low corona inception voltage, high corona current density, exceptional mechanical strength, and is virtually indestructible. It exhibits excellent resistance to high temperatures and thermal deformation, and when combined with a top-mounted rapping mechanism, provides highly effective ash removal.
1. Optimal wide spacing and specially configured electrodes
This results in a more uniform electric field strength and plate current distribution, enabling an increase in the driving velocity by a factor of 1.3. As a result, the specific resistivity range for dust collection is expanded to 10¹–10¹⁴ Ω-cm, making it particularly suitable for recovering high-specific-resistivity dust from flue gases generated by fluidized-bed boilers, new-type dry-process rotary kilns for cement production, grate coolers, sintering machines, and other similar sources. Moreover, it can effectively mitigate or eliminate the back-corona phenomenon.
2. The world’s first all-new RS corona wire developed domestically.
With a maximum length of up to 15 meters, this device features a low corona inception voltage, high corona current density, exceptional mechanical strength, and is virtually indestructible. It exhibits excellent resistance to high temperatures and thermal deformation, and its top-mounted rapping mechanism ensures outstanding dust-cleaning performance. The corona wire density can be adjusted according to the dust concentration level, enabling it to effectively handle high-dust-concentration applications. The maximum allowable inlet dust concentration can reach as high as 1000 g/Nm³.
3. Powerful rapping at the top of the corona electrode
The top discharge electrode, designed based on ash-cleaning theory, features a powerful rapping mechanism that can be implemented either mechanically or electromagnetically—either option is available.
4. Free suspension of the yin and yang poles
Both the dust collection system and the corona electrode system of the HHD electrostatic precipitator adopt a three-dimensional suspension structure. When the flue gas temperature is excessively high, the dust collection electrodes and corona electrodes will expand and deform freely in all three dimensions. Moreover, the dust collection electrode system features a specially designed constraint structure made of heat-resistant steel belts, which significantly enhances the HHD electrostatic precipitator’s resistance to thermal deformation. Commercial operation has demonstrated that the HHD electrostatic precipitator can withstand temperatures up to 390℃.
5. Increase the rapping acceleration.
Improving Dust-Cleaning Performance: The effectiveness of dust-cleaning in the collecting electrode system directly affects the dust-collection efficiency. After a period of operation, most electrostatic precipitators show a decline in efficiency. The root cause of this decline is primarily poor dust-cleaning performance of the collecting electrodes. The HHD electrostatic precipitator leverages the latest impact theory and practical findings to transform the traditional flat-steel impact rod structure into an integral steel structure. Additionally, it simplifies and streamlines the side-mounted rapping hammer mechanism on the collecting electrodes, reducing the number of dropping hammers by two-thirds. Experimental results demonstrate that the minimum acceleration on the surface of the collecting electrode plates has increased from 220G to 356G.
6. Small footprint and lightweight
Thanks to the top-rapping design of the discharge electrode system and the innovative, unconventional use of an asymmetric suspension for each electric field, the overall length of the electrostatic precipitator is reduced by 3 to 5 meters, and its weight is reduced by 15%, all while maintaining the same total dust collection area.
7. High-reliability insulation system: To prevent condensation and tracking on the high-voltage insulating materials of the electrostatic precipitator, the casing features a heat-storage, double-layer, inflatable roof design. The electric heating elements utilize the latest PTC and PTS materials. The bottom of the insulating bushing incorporates a hyperbolic reverse-blow cleaning design, effectively eliminating the common failure of condensation-induced tracking in porcelain bushings and making maintenance, upkeep, and replacement exceptionally convenient.
8. Matching L-C High-System: The high-voltage control can be implemented using a DSC system with host-computer operation, while the low-voltage control is managed by a PLC and operated via a Chinese-language touch screen. The high-voltage power supply features constant-current and high-impedance DC power, perfectly matched to the HHD electrostatic precipitator body. This system delivers superior performance in achieving high dust removal efficiency, overcoming high specific resistivity, and handling high-concentration dust loads.
For more information on industrial vacuum cleaners, please visit: http://www.meitengqi.com/
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