Design method of electrostatic dust removal reactor and indoor dust removal equipment

A technology of electrostatic dust removal and design method, which is applied in the field of air purification, can solve problems such as ineffective removal, and achieve the effect of improving removal efficiency

Active Publication Date: 2019-04-12
倪圣洁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the dust removal technology in the prior art is mainly aimed at PM2.5. Some high-efficiency equipment can effectively remove inhalable particulate matter with a particle size above 1.0 μm, but cannot effectively remove PM0.3 with a smaller particle size.

Method used

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  • Design method of electrostatic dust removal reactor and indoor dust removal equipment
  • Design method of electrostatic dust removal reactor and indoor dust removal equipment
  • Design method of electrostatic dust removal reactor and indoor dust removal equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] An electrostatic dust removal reactor has a wire-plate electric field structure and adopts positive corona discharge. The electric field structure design method is as follows: figure 1 shown, including the following steps:

[0049] S100: Estimate the indoor gas flow Q and the electric field wind speed V, and calculate the cross-sectional area F of the high voltage plate according to the gas flow Q and the electric field wind speed V,

[0050] S200: Design the electric field strength E and the power supply voltage U, calculate the high-voltage plate spacing b,

[0051] S300: Determine the dust particle driving speed ω and the design dust collection efficiency η', and calculate the length L of the high-voltage plate according to the efficiency formula, the efficiency formula is:

[0052]

[0053]Among them, η' is the design dust collection efficiency, ω is the driving speed of dust particles, V is the wind speed of the electric field, b is the distance between the...

Embodiment 2

[0063] Design an electrostatic precipitator reactor, including the following steps:

[0064] S100: Estimate the indoor gas flow Q, set the room area S, height H, air circulation times N per hour, and substitute into the formula Q=S×H×N to obtain the required gas flow Q.

[0065] The wind speed V of the electric field of the electrostatic precipitator is taken as 1-1.5m / s. If the wind speed of the dust collector is too high, the length of the electric field and the volume of the purifier will be increased, causing the dust to fly again; if the wind speed is too low, the cross-sectional area of ​​the electric field will increase. Thereby the volume of equipment increases, and the cost rises.

[0066] Calculate the cross-sectional area F of the high-voltage plate according to the gas flow Q and the wind speed V of the electric field, and substitute it into the formula

[0067] S200: The design electric field strength E is 3-8kV / cm, the power supply voltage U is 5-7kV, and the ...

Embodiment 3

[0081] Design an electrostatic precipitator reactor, including the following steps:

[0082] S100: Estimate the indoor gas flow Q, and set the room area S to 10m 2 , the height H is 3m, the number of air circulation per hour N is 3 times, and the formula Q=S×H×N is substituted into the required gas flow Q to be 90m 3 / h. Set the electric field wind speed V of the electrostatic precipitator to 1m / s.

[0083] Calculate the cross-sectional area F of the high-voltage plate according to the gas flow Q and the wind speed V of the electric field, and substitute it into the formula The cross-sectional area F of the high-voltage plate is 0.025m 2 .

[0084] S200: The design electric field strength E is 5kV / cm, the power supply voltage U is 7kV, and the distance between the high voltage plates is calculated The obtained high-voltage plate spacing b is 14mm.

[0085] S300: According to empirical values, determine that the driving speed w is 0.09m / s, set the design dust collection...

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Abstract

The invention discloses a design method of an electrostatic dust removal reactor. The design method comprises the following steps that S100, indoor gas flow Q and electric field wind speed v are estimated, and the cross section area F of a dust collecting plate is calculated; S200, the electric field intensity E and the power supply voltage U are designed, and the distance b of polar plates is calculated; S300, the dust particle driving speed omega is determined, and the dust collecting efficiency eta' is designed, and next, the length L of the dust collecting plate is calculated; S400, the dust collecting area S is calculated; S500, the number n of channels of the dust collecting plate is calculated; S600, the width W of the dust collecting plate is calculated; and S700, the design parameters are corrected. The invention further discloses indoor dust removal equipment designed by the method. According to indoor conditions needing to be purified, the parameters of the electrostatic dust removal reactor are designed, then the charge mechanism and the migration rule of the particles with different particle sizes and different morphologies in the system are inspected, and the size, the distance and the electric field intensity of the dust collecting plate are adjusted based on the efficiency formula, next, the electric field structure capable of effectively removing the particleswith multiple particle sizes can be designed, and the removal efficiency of the submicron particles can be improved.

Description

technical field [0001] The invention relates to the technical field of air purification, in particular to an electrostatic dust removal reactor design method and indoor dust removal equipment. Background technique [0002] Since 2013, smog has occurred frequently in my country, and the concentration of PM2.5 in the atmosphere has seriously exceeded the standard, and many cities have suffered greatly. In response to indoor environmental problems, various indoor purification technologies have been developed, and various types of air purifiers have appeared on the market to remove inhalable particulate matter, smoke and dust, and volatile organic compounds represented by formaldehyde in the indoor air, effectively improving the environment. Indoor air quality. [0003] The current mainstream air dust removal technology includes air filtration technology and electrostatic adsorption technology. Air filtration technology allows air to pass through fiber filter materials to capt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03C3/08B03C3/34B03C3/41G06F17/50
CPCB03C3/08B03C3/34B03C3/41B03C2201/04G06F30/17
Inventor 屠黎丽冯雅琴
Owner 倪圣洁
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