Multifield promotion-based coagulation and aggregation strengthening device and method for particulate matters
A technology for strengthening devices and particulate matter, applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve problems such as unsatisfactory effects, improve the probability of particle collision and agglomeration, increase the average particle size, and reduce the emission concentration. Effect
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Embodiment 1
[0032] refer to figure 1 , figure 2, a particle coagulation and agglomeration strengthening device based on multi-field promotion, the device includes a coalescer 1, along the direction from the coalescer inlet 8 to the coalescer outlet 6, and the heat exchange cooling condenser 13 is arranged in sequence in the coalescer , a spray humidifier, an orifice electrocoagulation system assisted by ion wind, and a coagulation mixer 5, and the outlet 6 of the coagulation unit is connected with the inlet of the electrostatic precipitator 7. The orifice electrocoagulation system assisted by the ion wind includes an anode 3, an orifice plate 4 and a cathode 9, and the anode 3, the orifice plate 4 and the cathode 9 are all arranged parallel to the flue gas flow direction, and the anode 3 and the cathode 9 are respectively arranged between two adjacent orifice-type pole plates, and along the direction perpendicular to the flow direction of the flue gas, the anode 3, the orifice-type pole...
Embodiment 2
[0039] refer to figure 1 , figure 2 , a method for strengthening the coagulation and agglomeration of particulate matter based on multi-field promotion, using the device of embodiment 1, comprising the following steps:
[0040] (1) The flue gas enters the condenser 1 from the inlet 8 of the condenser, and first passes through the heat exchange cooling condenser 13 to cool down and condense, and the moisture and SO in the flue gas 3 Condensation and aggregation on the surface of the particles increases the size of the particles, increases the dielectric constant, and enhances the charging capacity;
[0041] The heat exchange cooling condenser 13 reduces the temperature of the flue gas to between 100°C and 80°C, and the heat exchange cooling condenser is used to recover the heat in the flue gas, so that the moisture and SO in the flue gas 3 and other components condense on the surface of the particles, improving the polarization ability and dielectric constant of the particle...
Embodiment 3
[0048] refer to image 3 , Set the spray humidifier 5 behind the orifice electrocoagulation system assisted by ion wind, and refer to Example 1 for others.
[0049] This device is tested in the laboratory (test conditions such as embodiment 1), test result shows, flue gas passes through this device, PM 1.0 The number concentration of the particles is reduced by 42%, the median particle size of the particles is increased by 35%, and the emission concentration is reduced to 8mg / m when combined with dust removal equipment 3 the following.
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