Method and device for spray of agglomerator solution by electric dust collector to promote PM2.5 removal
A technology of electrostatic precipitator and agglomeration agent, which is applied in the direction of chemical instruments and methods, electrostatic effect separation, solid separation, etc. It can solve the problems that cannot effectively target PM2.5 in flue gas, and achieve the effect of increasing the growth of reunion, enhancing efficiency, The effect of increasing dwell time
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[0041] Example 1:
[0042] The flue gas is produced by a fully automatic coal-fired boiler, and the flue gas volume is 300Nm 3 / h, using wire-plate electric precipitator; the mass percentage composition of the agglomerating agent solution is: 0.05% pectin, 0.005% sodium dioctyl succinate sulfonate, and the remaining industrial water with a temperature of about 45°C. Agglomerating agent solution droplets with a temperature of 45°C and a particle size of about 20-30μm are sprayed into the final electric field of the electrostatic precipitator through a two-fluid atomizing nozzle, and the spraying amount is 0.1kg / Nm 3 In the flue gas, the agglomerating agent solution accounts for about 0.2% of the mass of the dust. The temperature of the flue gas at the spraying point is about 135°C, and the residence time is about 0.5s. Under the action of high-temperature flue gas, the droplets of the agglomerating agent solution evaporate rapidly and interact with fine particles to promote their a...
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[0043] Example 2:
[0044] The composition of the agglomerating agent solution is: 0.1% guar gum, 0.01% aqueous silicone wetting agent, and the rest is industrial water; the spraying amount of the agglomerating agent solution is 0.07kg / Nm 3 The flue gas, in which the agglomerating agent solution accounts for about 0.23% of the mass of the dust, and the flue temperature at the spraying point is about 126°C; the rest is the same as in Example 1. Measured by Vaisala-HMT337 temperature and humidity transmitter, the moisture content of the flue gas at the outlet of the electrostatic precipitator increased from 6.45% to 10.35%, the flue gas temperature dropped to 106°C, and the atomized agglomeration agent solution droplets could be completely evaporated. Use the electric scale low-voltage impactor ELPI real-time online measurement, after adding the agglomerating agent solution, the PM outlet of the electrostatic precipitator 2.5 Mass concentration from 10mg / m 3 To 6.5 mg / m 3 , Reduced ...
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